4 // Originally by David Raingeard (cal2)
5 // GCC/SDL port by Niels Wagenaar (Linux/WIN32) and Caz (BeOS)
6 // Cleanups and endian wrongness amelioration by James L. Hammons
7 // Note: Endian wrongness probably stems from the MAME origins of this emu and
8 // the braindead way in which MAME handles memory. :-)
10 // Note: TOM has only a 16K memory space
12 // ------------------------------------------------------------
13 // TOM REGISTERS (Mapped by Aaron Giles)
14 // ------------------------------------------------------------
15 // F00000-F0FFFF R/W xxxxxxxx xxxxxxxx Internal Registers
16 // F00000 R/W -x-xx--- xxxxxxxx MEMCON1 - memory config reg 1
17 // -x------ -------- (CPU32 - is the CPU 32bits?)
18 // ---xx--- -------- (IOSPEED - external I/O clock cycles)
19 // -------- x------- (FASTROM - reduces ROM clock cycles)
20 // -------- -xx----- (DRAMSPEED - sets RAM clock cycles)
21 // -------- ---xx--- (ROMSPEED - sets ROM clock cycles)
22 // -------- -----xx- (ROMWIDTH - sets width of ROM: 8,16,32,64 bits)
23 // -------- -------x (ROMHI - controls ROM mapping)
24 // F00002 R/W --xxxxxx xxxxxxxx MEMCON2 - memory config reg 2
25 // --x----- -------- (HILO - image display bit order)
26 // ---x---- -------- (BIGEND - big endian addressing?)
27 // ----xxxx -------- (REFRATE - DRAM refresh rate)
28 // -------- xx------ (DWIDTH1 - DRAM1 width: 8,16,32,64 bits)
29 // -------- --xx---- (COLS1 - DRAM1 columns: 256,512,1024,2048)
30 // -------- ----xx-- (DWIDTH0 - DRAM0 width: 8,16,32,64 bits)
31 // -------- ------xx (COLS0 - DRAM0 columns: 256,512,1024,2048)
32 // F00004 R/W -----xxx xxxxxxxx HC - horizontal count
33 // -----x-- -------- (which half of the display)
34 // ------xx xxxxxxxx (10-bit counter)
35 // F00006 R/W ----xxxx xxxxxxxx VC - vertical count
36 // ----x--- -------- (which field is being generated)
37 // -----xxx xxxxxxxx (11-bit counter)
38 // F00008 R -----xxx xxxxxxxx LPH - light pen horizontal position
39 // F0000A R -----xxx xxxxxxxx LPV - light pen vertical position
40 // F00010-F00017 R xxxxxxxx xxxxxxxx OB - current object code from the graphics processor
41 // F00020-F00023 W xxxxxxxx xxxxxxxx OLP - start of the object list
42 // F00026 W -------- -------x OBF - object processor flag
43 // F00028 W ----xxxx xxxxxxxx VMODE - video mode
44 // W ----xxx- -------- (PWIDTH1-8 - width of pixel in video clock cycles)
45 // W -------x -------- (VARMOD - enable variable color resolution)
46 // W -------- x------- (BGEN - clear line buffer to BG color)
47 // W -------- -x------ (CSYNC - enable composite sync on VSYNC)
48 // W -------- --x----- (BINC - local border color if INCEN)
49 // W -------- ---x---- (INCEN - encrustation enable)
50 // W -------- ----x--- (GENLOCK - enable genlock)
51 // W -------- -----xx- (MODE - CRY16,RGB24,DIRECT16,RGB16)
52 // W -------- -------x (VIDEN - enables video)
53 // F0002A W xxxxxxxx xxxxxxxx BORD1 - border color (red/green)
54 // F0002C W -------- xxxxxxxx BORD2 - border color (blue)
55 // F0002E W ------xx xxxxxxxx HP - horizontal period
56 // F00030 W -----xxx xxxxxxxx HBB - horizontal blanking begin
57 // F00032 W -----xxx xxxxxxxx HBE - horizontal blanking end
58 // F00034 W -----xxx xxxxxxxx HSYNC - horizontal sync
59 // F00036 W ------xx xxxxxxxx HVS - horizontal vertical sync
60 // F00038 W -----xxx xxxxxxxx HDB1 - horizontal display begin 1
61 // F0003A W -----xxx xxxxxxxx HDB2 - horizontal display begin 2
62 // F0003C W -----xxx xxxxxxxx HDE - horizontal display end
63 // F0003E W -----xxx xxxxxxxx VP - vertical period
64 // F00040 W -----xxx xxxxxxxx VBB - vertical blanking begin
65 // F00042 W -----xxx xxxxxxxx VBE - vertical blanking end
66 // F00044 W -----xxx xxxxxxxx VS - vertical sync
67 // F00046 W -----xxx xxxxxxxx VDB - vertical display begin
68 // F00048 W -----xxx xxxxxxxx VDE - vertical display end
69 // F0004A W -----xxx xxxxxxxx VEB - vertical equalization begin
70 // F0004C W -----xxx xxxxxxxx VEE - vertical equalization end
71 // F0004E W -----xxx xxxxxxxx VI - vertical interrupt
72 // F00050 W xxxxxxxx xxxxxxxx PIT0 - programmable interrupt timer 0
73 // F00052 W xxxxxxxx xxxxxxxx PIT1 - programmable interrupt timer 1
74 // F00054 W ------xx xxxxxxxx HEQ - horizontal equalization end
75 // F00058 W xxxxxxxx xxxxxxxx BG - background color
76 // F000E0 R/W ---xxxxx ---xxxxx INT1 - CPU interrupt control register
77 // ---x---- -------- (C_JERCLR - clear pending Jerry ints)
78 // ----x--- -------- (C_PITCLR - clear pending PIT ints)
79 // -----x-- -------- (C_OPCLR - clear pending object processor ints)
80 // ------x- -------- (C_GPUCLR - clear pending graphics processor ints)
81 // -------x -------- (C_VIDCLR - clear pending video timebase ints)
82 // -------- ---x---- (C_JERENA - enable Jerry ints)
83 // -------- ----x--- (C_PITENA - enable PIT ints)
84 // -------- -----x-- (C_OPENA - enable object processor ints)
85 // -------- ------x- (C_GPUENA - enable graphics processor ints)
86 // -------- -------x (C_VIDENA - enable video timebase ints)
87 // F000E2 W -------- -------- INT2 - CPU interrupt resume register
88 // F00400-F005FF R/W xxxxxxxx xxxxxxxx CLUT - color lookup table A
89 // F00600-F007FF R/W xxxxxxxx xxxxxxxx CLUT - color lookup table B
90 // F00800-F00D9F R/W xxxxxxxx xxxxxxxx LBUF - line buffer A
91 // F01000-F0159F R/W xxxxxxxx xxxxxxxx LBUF - line buffer B
92 // F01800-F01D9F R/W xxxxxxxx xxxxxxxx LBUF - line buffer currently selected
93 // ------------------------------------------------------------
94 // F02000-F021FF R/W xxxxxxxx xxxxxxxx GPU control registers
95 // F02100 R/W xxxxxxxx xxxxxxxx G_FLAGS - GPU flags register
96 // R/W x------- -------- (DMAEN - DMA enable)
97 // R/W -x------ -------- (REGPAGE - register page)
98 // W --x----- -------- (G_BLITCLR - clear blitter interrupt)
99 // W ---x---- -------- (G_OPCLR - clear object processor int)
100 // W ----x--- -------- (G_PITCLR - clear PIT interrupt)
101 // W -----x-- -------- (G_JERCLR - clear Jerry interrupt)
102 // W ------x- -------- (G_CPUCLR - clear CPU interrupt)
103 // R/W -------x -------- (G_BLITENA - enable blitter interrupt)
104 // R/W -------- x------- (G_OPENA - enable object processor int)
105 // R/W -------- -x------ (G_PITENA - enable PIT interrupt)
106 // R/W -------- --x----- (G_JERENA - enable Jerry interrupt)
107 // R/W -------- ---x---- (G_CPUENA - enable CPU interrupt)
108 // R/W -------- ----x--- (IMASK - interrupt mask)
109 // R/W -------- -----x-- (NEGA_FLAG - ALU negative)
110 // R/W -------- ------x- (CARRY_FLAG - ALU carry)
111 // R/W -------- -------x (ZERO_FLAG - ALU zero)
112 // F02104 W -------- ----xxxx G_MTXC - matrix control register
113 // W -------- ----x--- (MATCOL - column/row major)
114 // W -------- -----xxx (MATRIX3-15 - matrix width)
115 // F02108 W ----xxxx xxxxxx-- G_MTXA - matrix address register
116 // F0210C W -------- -----xxx G_END - data organization register
117 // W -------- -----x-- (BIG_INST - big endian instruction fetch)
118 // W -------- ------x- (BIG_PIX - big endian pixels)
119 // W -------- -------x (BIG_IO - big endian I/O)
120 // F02110 R/W xxxxxxxx xxxxxxxx G_PC - GPU program counter
121 // F02114 R/W xxxxxxxx xx-xxxxx G_CTRL - GPU control/status register
122 // R xxxx---- -------- (VERSION - GPU version code)
123 // R/W ----x--- -------- (BUS_HOG - hog the bus!)
124 // R/W -----x-- -------- (G_BLITLAT - blitter interrupt latch)
125 // R/W ------x- -------- (G_OPLAT - object processor int latch)
126 // R/W -------x -------- (G_PITLAT - PIT interrupt latch)
127 // R/W -------- x------- (G_JERLAT - Jerry interrupt latch)
128 // R/W -------- -x------ (G_CPULAT - CPU interrupt latch)
129 // R/W -------- ---x---- (SINGLE_GO - single step one instruction)
130 // R/W -------- ----x--- (SINGLE_STEP - single step mode)
131 // R/W -------- -----x-- (FORCEINT0 - cause interrupt 0 on GPU)
132 // R/W -------- ------x- (CPUINT - send GPU interrupt to CPU)
133 // R/W -------- -------x (GPUGO - enable GPU execution)
134 // F02118-F0211B R/W xxxxxxxx xxxxxxxx G_HIDATA - high data register
135 // F0211C-F0211F R xxxxxxxx xxxxxxxx G_REMAIN - divide unit remainder
136 // F0211C W -------- -------x G_DIVCTRL - divide unit control
137 // W -------- -------x (DIV_OFFSET - 1=16.16 divide, 0=32-bit divide)
138 // ------------------------------------------------------------
140 // ------------------------------------------------------------
141 // F02200-F022FF R/W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx Blitter registers
142 // F02200 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_BASE - A1 base register
143 // F02204 W -------- ---xxxxx -xxxxxxx xxxxx-xx A1_FLAGS - A1 flags register
144 // W -------- ---x---- -------- -------- (YSIGNSUB - invert sign of Y delta)
145 // W -------- ----x--- -------- -------- (XSIGNSUB - invert sign of X delta)
146 // W -------- -----x-- -------- -------- (Y add control)
147 // W -------- ------xx -------- -------- (X add control)
148 // W -------- -------- -xxxxxx- -------- (width in 6-bit floating point)
149 // W -------- -------- -------x xx------ (ZOFFS1-6 - Z data offset)
150 // W -------- -------- -------- --xxx--- (PIXEL - pixel size)
151 // W -------- -------- -------- ------xx (PITCH1-4 - data phrase pitch)
152 // F02208 W -xxxxxxx xxxxxxxx -xxxxxxx xxxxxxxx A1_CLIP - A1 clipping size
153 // W -xxxxxxx xxxxxxxx -------- -------- (height)
154 // W -------- -------- -xxxxxxx xxxxxxxx (width)
155 // F0220C R/W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_PIXEL - A1 pixel pointer
156 // R/W xxxxxxxx xxxxxxxx -------- -------- (Y pixel value)
157 // R/W -------- -------- xxxxxxxx xxxxxxxx (X pixel value)
158 // F02210 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_STEP - A1 step value
159 // W xxxxxxxx xxxxxxxx -------- -------- (Y step value)
160 // W -------- -------- xxxxxxxx xxxxxxxx (X step value)
161 // F02214 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_FSTEP - A1 step fraction value
162 // W xxxxxxxx xxxxxxxx -------- -------- (Y step fraction value)
163 // W -------- -------- xxxxxxxx xxxxxxxx (X step fraction value)
164 // F02218 R/W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_FPIXEL - A1 pixel pointer fraction
165 // R/W xxxxxxxx xxxxxxxx -------- -------- (Y pixel fraction value)
166 // R/W -------- -------- xxxxxxxx xxxxxxxx (X pixel fraction value)
167 // F0221C W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_INC - A1 increment
168 // W xxxxxxxx xxxxxxxx -------- -------- (Y increment)
169 // W -------- -------- xxxxxxxx xxxxxxxx (X increment)
170 // F02220 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A1_FINC - A1 increment fraction
171 // W xxxxxxxx xxxxxxxx -------- -------- (Y increment fraction)
172 // W -------- -------- xxxxxxxx xxxxxxxx (X increment fraction)
173 // F02224 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A2_BASE - A2 base register
174 // F02228 W -------- ---xxxxx -xxxxxxx xxxxx-xx A2_FLAGS - A2 flags register
175 // W -------- ---x---- -------- -------- (YSIGNSUB - invert sign of Y delta)
176 // W -------- ----x--- -------- -------- (XSIGNSUB - invert sign of X delta)
177 // W -------- -----x-- -------- -------- (Y add control)
178 // W -------- ------xx -------- -------- (X add control)
179 // W -------- -------- -xxxxxx- -------- (width in 6-bit floating point)
180 // W -------- -------- -------x xx------ (ZOFFS1-6 - Z data offset)
181 // W -------- -------- -------- --xxx--- (PIXEL - pixel size)
182 // W -------- -------- -------- ------xx (PITCH1-4 - data phrase pitch)
183 // F0222C W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A2_MASK - A2 window mask
184 // F02230 R/W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A2_PIXEL - A2 pixel pointer
185 // R/W xxxxxxxx xxxxxxxx -------- -------- (Y pixel value)
186 // R/W -------- -------- xxxxxxxx xxxxxxxx (X pixel value)
187 // F02234 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx A2_STEP - A2 step value
188 // W xxxxxxxx xxxxxxxx -------- -------- (Y step value)
189 // W -------- -------- xxxxxxxx xxxxxxxx (X step value)
190 // F02238 W -xxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_CMD - command register
191 // W -x------ -------- -------- -------- (SRCSHADE - modify source intensity)
192 // W --x----- -------- -------- -------- (BUSHI - hi priority bus)
193 // W ---x---- -------- -------- -------- (BKGWREN - writeback destination)
194 // W ----x--- -------- -------- -------- (DCOMPEN - write inhibit from data comparator)
195 // W -----x-- -------- -------- -------- (BCOMPEN - write inhibit from bit coparator)
196 // W ------x- -------- -------- -------- (CMPDST - compare dest instead of src)
197 // W -------x xxx----- -------- -------- (logical operation)
198 // W -------- ---xxx-- -------- -------- (ZMODE - Z comparator mode)
199 // W -------- ------x- -------- -------- (ADDDSEL - select sum of src & dst)
200 // W -------- -------x -------- -------- (PATDSEL - select pattern data)
201 // W -------- -------- x------- -------- (TOPNEN - enable carry into top intensity nibble)
202 // W -------- -------- -x------ -------- (TOPBEN - enable carry into top intensity byte)
203 // W -------- -------- --x----- -------- (ZBUFF - enable Z updates in inner loop)
204 // W -------- -------- ---x---- -------- (GOURD - enable gouraud shading in inner loop)
205 // W -------- -------- ----x--- -------- (DSTA2 - reverses A2/A1 roles)
206 // W -------- -------- -----x-- -------- (UPDA2 - add A2 step to A2 in outer loop)
207 // W -------- -------- ------x- -------- (UPDA1 - add A1 step to A1 in outer loop)
208 // W -------- -------- -------x -------- (UPDA1F - add A1 fraction step to A1 in outer loop)
209 // W -------- -------- -------- x------- (diagnostic use)
210 // W -------- -------- -------- -x------ (CLIP_A1 - clip A1 to window)
211 // W -------- -------- -------- --x----- (DSTWRZ - enable dest Z write in inner loop)
212 // W -------- -------- -------- ---x---- (DSTENZ - enable dest Z read in inner loop)
213 // W -------- -------- -------- ----x--- (DSTEN - enables dest data read in inner loop)
214 // W -------- -------- -------- -----x-- (SRCENX - enable extra src read at start of inner)
215 // W -------- -------- -------- ------x- (SRCENZ - enables source Z read in inner loop)
216 // W -------- -------- -------- -------x (SRCEN - enables source data read in inner loop)
217 // F02238 R xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_CMD - status register
218 // R xxxxxxxx xxxxxxxx -------- -------- (inner count)
219 // R -------- -------- xxxxxxxx xxxxxx-- (diagnostics)
220 // R -------- -------- -------- ------x- (STOPPED - when stopped in collision detect)
221 // R -------- -------- -------- -------x (IDLE - when idle)
222 // F0223C W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_COUNT - counters register
223 // W xxxxxxxx xxxxxxxx -------- -------- (outer loop count)
224 // W -------- -------- xxxxxxxx xxxxxxxx (inner loop count)
225 // F02240-F02247 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_SRCD - source data register
226 // F02248-F0224F W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_DSTD - destination data register
227 // F02250-F02257 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_DSTZ - destination Z register
228 // F02258-F0225F W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_SRCZ1 - source Z register 1
229 // F02260-F02267 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_SRCZ2 - source Z register 2
230 // F02268-F0226F W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_PATD - pattern data register
231 // F02270 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_IINC - intensity increment
232 // F02274 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_ZINC - Z increment
233 // F02278 W -------- -------- -------- -----xxx B_STOP - collision control
234 // W -------- -------- -------- -----x-- (STOPEN - enable blitter collision stops)
235 // W -------- -------- -------- ------x- (ABORT - abort after stop)
236 // W -------- -------- -------- -------x (RESUME - resume after stop)
237 // F0227C W -------- xxxxxxxx xxxxxxxx xxxxxxxx B_I3 - intensity 3
238 // F02280 W -------- xxxxxxxx xxxxxxxx xxxxxxxx B_I2 - intensity 2
239 // F02284 W -------- xxxxxxxx xxxxxxxx xxxxxxxx B_I1 - intensity 1
240 // F02288 W -------- xxxxxxxx xxxxxxxx xxxxxxxx B_I0 - intensity 0
241 // F0228C W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z3 - Z3
242 // F02290 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z2 - Z2
243 // F02294 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z1 - Z1
244 // F02298 W xxxxxxxx xxxxxxxx xxxxxxxx xxxxxxxx B_Z0 - Z0
245 // ------------------------------------------------------------
249 #include <string.h> // For memset()
250 #include <stdlib.h> // For rand()
259 #include "settings.h"
262 #define NEW_TIMER_SYSTEM
264 // TOM registers (offset from $F00000)
271 #define MODE 0x0006 // Line buffer to video generator mode
272 #define BGEN 0x0080 // Background enable (CRY & RGB16 only)
273 #define VARMOD 0x0100 // Mixed CRY/RGB16 mode (only works in MODE 0!)
274 #define PWIDTH 0x0E00 // Pixel width in video clock cycles (value written + 1)
275 #define BORD1 0x2A // Border green/red values (8 BPP)
276 #define BORD2 0x2C // Border blue value (8 BPP)
277 #define HP 0x2E // Values range from 1 - 1024 (value written + 1)
280 #define HDB1 0x38 // Horizontal display begin 1
283 #define VP 0x3E // Value ranges from 1 - 2048 (value written + 1)
293 //NOTE: These arbitrary cutoffs are NOT taken into account for PAL jaguar screens. !!! FIX !!!
295 // Arbitrary video cutoff values (i.e., first/last visible spots on a TV, in HC ticks)
296 /*#define LEFT_VISIBLE_HC 208
297 #define RIGHT_VISIBLE_HC 1528//*/
298 #define LEFT_VISIBLE_HC 208
299 #define RIGHT_VISIBLE_HC 1488
300 //#define TOP_VISIBLE_VC 25
301 //#define BOTTOM_VISIBLE_VC 503
302 #define TOP_VISIBLE_VC 31
303 #define BOTTOM_VISIBLE_VC 511
305 //Are these PAL horizontals correct?
306 //They seem to be for the most part, but there are some games that seem to be
307 //shifted over to the right from this "window".
308 #define LEFT_VISIBLE_HC_PAL 208
309 #define RIGHT_VISIBLE_HC_PAL 1488
310 #define TOP_VISIBLE_VC_PAL 67
311 #define BOTTOM_VISIBLE_VC_PAL 579
313 //This can be defined in the makefile as well...
314 //(It's easier to do it here, though...)
317 extern uint8 objectp_running;
319 uint8 tomRam8[0x4000];
320 uint32 tomWidth, tomHeight;
321 static uint32 tom_timer_prescaler;
322 static uint32 tom_timer_divider;
323 static int32 tom_timer_counter;
324 //uint32 tom_scanline;
325 //uint32 hblankWidthInPixels = 0;
326 uint16 tom_jerry_int_pending, tom_timer_int_pending, tom_object_int_pending,
327 tom_gpu_int_pending, tom_video_int_pending;
328 //uint16 * tom_cry_rgb_mix_lut;
329 //int16 * TOMBackbuffer;
330 uint32 * TOMBackbuffer;
332 static const char * videoMode_to_str[8] =
333 { "16 BPP CRY", "24 BPP RGB", "16 BPP DIRECT", "16 BPP RGB",
334 "Mixed mode", "24 BPP RGB", "16 BPP DIRECT", "16 BPP RGB" };
336 typedef void (render_xxx_scanline_fn)(uint32 *);
338 // Private function prototypes
340 void tom_render_16bpp_cry_scanline(uint32 * backbuffer);
341 void tom_render_24bpp_scanline(uint32 * backbuffer);
342 void tom_render_16bpp_direct_scanline(uint32 * backbuffer);
343 void tom_render_16bpp_rgb_scanline(uint32 * backbuffer);
344 void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer);
346 void tom_render_16bpp_cry_stretch_scanline(uint32 * backbuffer);
347 void tom_render_24bpp_stretch_scanline(uint32 * backbuffer);
348 void tom_render_16bpp_direct_stretch_scanline(uint32 * backbuffer);
349 void tom_render_16bpp_rgb_stretch_scanline(uint32 * backbuffer);
350 void tom_render_16bpp_cry_rgb_mix_stretch_scanline(uint32 * backbuffer);
352 render_xxx_scanline_fn * scanline_render_normal[] =
354 tom_render_16bpp_cry_scanline,
355 tom_render_24bpp_scanline,
356 tom_render_16bpp_direct_scanline,
357 tom_render_16bpp_rgb_scanline,
358 tom_render_16bpp_cry_rgb_mix_scanline,
359 tom_render_24bpp_scanline,
360 tom_render_16bpp_direct_scanline,
361 tom_render_16bpp_rgb_scanline
364 render_xxx_scanline_fn * scanline_render_stretch[] =
366 tom_render_16bpp_cry_stretch_scanline,
367 tom_render_24bpp_stretch_scanline,
368 tom_render_16bpp_direct_stretch_scanline,
369 tom_render_16bpp_rgb_stretch_scanline,
370 tom_render_16bpp_cry_rgb_mix_stretch_scanline,
371 tom_render_24bpp_stretch_scanline,
372 tom_render_16bpp_direct_stretch_scanline,
373 tom_render_16bpp_rgb_stretch_scanline,
376 render_xxx_scanline_fn * scanline_render[8];
379 // Screen info for various games [PAL]...
382 TOM: Horizontal Period written by M68K: 850 (+1*2 = 1702)
383 TOM: Horizontal Blank Begin written by M68K: 1711
384 TOM: Horizontal Blank End written by M68K: 158
385 TOM: Horizontal Display End written by M68K: 1696
386 TOM: Horizontal Display Begin 1 written by M68K: 166
387 TOM: Vertical Period written by M68K: 623 (non-interlaced)
388 TOM: Vertical Blank End written by M68K: 34
389 TOM: Vertical Display Begin written by M68K: 46
390 TOM: Vertical Display End written by M68K: 526
391 TOM: Vertical Blank Begin written by M68K: 600
392 TOM: Vertical Sync written by M68K: 618
393 TOM: Horizontal Display End written by M68K: 1665
394 TOM: Horizontal Display Begin 1 written by M68K: 203
395 TOM: Vertical Display Begin written by M68K: 38
396 TOM: Vertical Display End written by M68K: 518
397 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 151)
398 TOM: Horizontal Display End written by M68K: 1713
399 TOM: Horizontal Display Begin 1 written by M68K: 157
400 TOM: Vertical Display Begin written by M68K: 35
401 TOM: Vertical Display End written by M68K: 2047
402 Horizontal range: 157 - 1713 (width: 1557 / 4 = 389.25, / 5 = 315.4)
405 TOM: Horizontal Period written by M68K: 845 (+1*2 = 1692)
406 TOM: Horizontal Blank Begin written by M68K: 1700
407 TOM: Horizontal Blank End written by M68K: 122
408 TOM: Horizontal Display End written by M68K: 1600
409 TOM: Horizontal Display Begin 1 written by M68K: 268
410 TOM: Vertical Period written by M68K: 523 (non-interlaced)
411 TOM: Vertical Blank End written by M68K: 40
412 TOM: Vertical Display Begin written by M68K: 44
413 TOM: Vertical Display End written by M68K: 492
414 TOM: Vertical Blank Begin written by M68K: 532
415 TOM: Vertical Sync written by M68K: 513
416 TOM: Video Mode written by M68K: 04C7. PWIDTH = 3, MODE = 16 BPP RGB, flags: BGEN (VC = 461)
419 TOM: Horizontal Display End written by M68K: 1713
420 TOM: Horizontal Display Begin 1 written by M68K: 157
421 TOM: Vertical Display Begin written by M68K: 35
422 TOM: Vertical Display End written by M68K: 2047
423 TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 89)
424 TOM: Horizontal Display Begin 1 written by M68K: 208
425 TOM: Horizontal Display End written by M68K: 1662
426 TOM: Vertical Display Begin written by M68K: 100
427 TOM: Vertical Display End written by M68K: 2047
428 TOM: Video Mode written by M68K: 07C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN VARMOD (VC = 205)
429 Horizontal range: 208 - 1662 (width: 1455 / 4 = 363.5)
432 TOM: Vertical Display Begin written by M68K: 96
433 TOM: Vertical Display End written by M68K: 2047
434 TOM: Horizontal Display Begin 1 written by M68K: 239
435 TOM: Horizontal Display End written by M68K: 1692
436 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 378)
437 TOM: Vertical Display Begin written by M68K: 44
438 TOM: Vertical Display End written by M68K: 2047
439 TOM: Horizontal Display Begin 1 written by M68K: 239
440 TOM: Horizontal Display End written by M68K: 1692
441 TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 559)
442 TOM: Vertical Display Begin written by M68K: 84
443 TOM: Vertical Display End written by M68K: 2047
444 TOM: Horizontal Display Begin 1 written by M68K: 239
445 TOM: Horizontal Display End written by M68K: 1692
446 TOM: Vertical Display Begin written by M68K: 44
447 TOM: Vertical Display End written by M68K: 2047
448 TOM: Horizontal Display Begin 1 written by M68K: 239
449 TOM: Horizontal Display End written by M68K: 1692
450 Horizontal range: 239 - 1692 (width: 1454 / 4 = 363.5)
454 // Screen info for various games [NTSC]...
457 TOM: Horizontal Display End written by M68K: 1727
458 TOM: Horizontal Display Begin 1 written by M68K: 123
459 TOM: Vertical Display Begin written by M68K: 25
460 TOM: Vertical Display End written by M68K: 2047
461 TOM: Video Mode written by M68K: 0EC1. PWIDTH = 8, MODE = 16 BPP CRY, flags: BGEN (VC = 5)
462 Also does PWIDTH = 4...
463 Vertical resolution: 238 lines
466 TOM: Horizontal Display End written by M68K: 1727
467 TOM: Horizontal Display Begin 1 written by M68K: 123
468 TOM: Vertical Display Begin written by M68K: 25
469 TOM: Vertical Display End written by M68K: 2047
470 TOM: Vertical Interrupt written by M68K: 507
471 TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 92)
472 TOM: Horizontal Display Begin 1 written by M68K: 208
473 TOM: Horizontal Display End written by M68K: 1670
474 Display starts at 31, then 52!
475 Vertical resolution: 238 lines
478 TOM: Horizontal Display End written by M68K: 1727
479 TOM: Horizontal Display Begin 1 written by M68K: 123
480 TOM: Vertical Display Begin written by M68K: 25
481 TOM: Vertical Display End written by M68K: 2047
482 TOM: Video Mode written by GPU: 08C7. PWIDTH = 5, MODE = 16 BPP RGB, flags: BGEN (VC = 4)
483 TOM: Video Mode written by GPU: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 508)
484 Display starts at 31 (PWIDTH = 4), 24 (PWIDTH = 5)
487 TOM: Vertical Interrupt written by M68K: 2047
488 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 0)
489 TOM: Horizontal Display End written by M68K: 1727
490 TOM: Horizontal Display Begin 1 written by M68K: 123
491 TOM: Vertical Display Begin written by M68K: 25
492 TOM: Vertical Display End written by M68K: 2047
493 TOM: Vertical Interrupt written by M68K: 507
494 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 369)
495 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 510)
496 TOM: Video Mode written by M68K: 06C3. PWIDTH = 4, MODE = 24 BPP RGB, flags: BGEN (VC = 510)
498 Vertical resolution: 238 lines
499 [Seems to be a problem between the horizontal positioning of the 16-bit CRY & 24-bit RGB]
502 TOM: Horizontal Period written by M68K: 844 (+1*2 = 1690)
503 TOM: Horizontal Blank Begin written by M68K: 1713
504 TOM: Horizontal Blank End written by M68K: 125
505 TOM: Horizontal Display End written by M68K: 1696
506 TOM: Horizontal Display Begin 1 written by M68K: 166
507 TOM: Vertical Period written by M68K: 523 (non-interlaced)
508 TOM: Vertical Blank End written by M68K: 24
509 TOM: Vertical Display Begin written by M68K: 46
510 TOM: Vertical Display End written by M68K: 496
511 TOM: Vertical Blank Begin written by M68K: 500
512 TOM: Vertical Sync written by M68K: 517
513 TOM: Vertical Interrupt written by M68K: 497
514 TOM: Video Mode written by M68K: 04C1. PWIDTH = 3, MODE = 16 BPP CRY, flags: BGEN (VC = 270)
518 TOM: Horizontal Display End written by M68K: 1727
519 TOM: Horizontal Display Begin 1 written by M68K: 123
520 TOM: Vertical Display Begin written by M68K: 25
521 TOM: Vertical Display End written by M68K: 2047
522 TOM: Vertical Interrupt written by M68K: 507
523 TOM: Video Mode written by M68K: 06C7. PWIDTH = 4, MODE = 16 BPP RGB, flags: BGEN (VC = 9)
526 TOM: Horizontal Display End written by M68K: 1823
527 TOM: Horizontal Display Begin 1 written by M68K: 45
528 TOM: Vertical Display Begin written by M68K: 40
529 TOM: Vertical Display End written by M68K: 2047
530 TOM: Vertical Interrupt written by M68K: 491
531 TOM: Video Mode written by M68K: 06C1. PWIDTH = 4, MODE = 16 BPP CRY, flags: BGEN (VC = 398)
532 Display starts at 11 (123 - 45 = 78, 78 / 4 = 19 pixels to skip)
533 Width is 417, so maybe width of 379 would be good (starting at 123, ending at 1639)
534 Vertical resolution: 238 lines
537 TOM: Horizontal Display End written by M68K: 1727
538 TOM: Horizontal Display Begin 1 written by M68K: 188
539 TOM: Vertical Display Begin written by M68K: 1
540 TOM: Vertical Display End written by M68K: 2047
541 TOM: Vertical Interrupt written by M68K: 483
542 TOM: Video Mode written by M68K: 08C7. PWIDTH = 5, MODE = 16 BPP RGB, flags: BGEN (VC = 99)
543 Width would be 303 with above scheme, but border width would be 13 pixels
546 Vertical resolution: 238 lines
549 uint32 RGB16ToRGB32[0x10000];
550 uint32 CRY16ToRGB32[0x10000];
551 uint32 MIX16ToRGB32[0x10000];
553 void TOMFillLookupTables(void)
555 for(uint32 i=0; i<0x10000; i++)
556 RGB16ToRGB32[i] = 0xFF000000
557 | ((i & 0xF100) >> 8) | ((i & 0xE000) >> 13)
558 | ((i & 0x07C0) << 13) | ((i & 0x0700) << 8)
559 | ((i & 0x003F) << 10) | ((i & 0x0030) << 4);
562 for(uint32 i=0; i<0x10000; i++)
564 uint32 chrm = (i & 0xF000) >> 12,
565 chrl = (i & 0x0F00) >> 8,
568 uint32 r = (((uint32)redcv[chrm][chrl]) * y) >> 8,
569 g = (((uint32)greencv[chrm][chrl]) * y) >> 8,
570 b = (((uint32)bluecv[chrm][chrl]) * y) >> 8;
572 CRY16ToRGB32[i] = 0xFF000000 | (b << 16) | (g << 8) | r;
573 MIX16ToRGB32[i] = CRY16ToRGB32[i];
576 for(uint32 i=0; i<0x10000; i++)
578 MIX16ToRGB32[i] = RGB16ToRGB32[i];
581 void TOMSetPendingJERRYInt(void)
583 tom_jerry_int_pending = 1;
586 void TOMSetPendingTimerInt(void)
588 tom_timer_int_pending = 1;
591 void TOMSetPendingObjectInt(void)
593 tom_object_int_pending = 1;
596 void TOMSetPendingGPUInt(void)
598 tom_gpu_int_pending = 1;
601 void TOMSetPendingVideoInt(void)
603 tom_video_int_pending = 1;
606 uint8 * TOMGetRamPointer(void)
611 uint8 TOMGetVideoMode(void)
613 uint16 vmode = GET16(tomRam8, VMODE);
614 return ((vmode & VARMOD) >> 6) | ((vmode & MODE) >> 1);
617 //Used in only one place (and for debug purposes): OBJECTP.CPP
618 uint16 TOMGetVDB(void)
620 // This in NOT VDB!!!
621 // return GET16(tomRam8, VBE);
622 return GET16(tomRam8, VDB);
626 // 16 BPP CRY/RGB mixed mode rendering
628 void tom_render_16bpp_cry_rgb_mix_scanline(uint32 * backbuffer)
630 //CHANGED TO 32BPP RENDERING
631 uint16 width = tomWidth;
632 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
634 //New stuff--restrict our drawing...
635 uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
636 //NOTE: May have to check HDB2 as well!
637 // Get start position in HC ticks
638 int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL);
641 current_line_buffer += 2 * -startPos;
643 //This case doesn't properly handle the "start on the right side of virtual screen" case
644 //Dunno why--looks Ok...
645 //What *is* for sure wrong is that it doesn't copy the linebuffer's BG pixels...
646 //This should likely be 4 instead of 2 (?--not sure)
647 backbuffer += 2 * startPos, width -= startPos;
651 uint16 color = (*current_line_buffer++) << 8;
652 color |= *current_line_buffer++;
653 *backbuffer++ = MIX16ToRGB32[color];
659 // 16 BPP CRY mode rendering
661 void tom_render_16bpp_cry_scanline(uint32 * backbuffer)
663 //CHANGED TO 32BPP RENDERING
664 uint16 width = tomWidth;
665 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
667 //New stuff--restrict our drawing...
668 uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
669 //NOTE: May have to check HDB2 as well!
670 int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL);// Get start position in HC ticks
673 current_line_buffer += 2 * -startPos;
675 //This should likely be 4 instead of 2 (?--not sure)
676 backbuffer += 2 * startPos, width -= startPos;
680 uint16 color = (*current_line_buffer++) << 8;
681 color |= *current_line_buffer++;
682 *backbuffer++ = CRY16ToRGB32[color];
688 // 24 BPP mode rendering
690 void tom_render_24bpp_scanline(uint32 * backbuffer)
692 //CHANGED TO 32BPP RENDERING
693 uint16 width = tomWidth;
694 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
696 //New stuff--restrict our drawing...
697 uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
698 //NOTE: May have to check HDB2 as well!
699 int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); // Get start position in HC ticks
702 current_line_buffer += 4 * -startPos;
704 //This should likely be 4 instead of 2 (?--not sure)
705 backbuffer += 2 * startPos, width -= startPos;
709 uint32 g = *current_line_buffer++;
710 uint32 r = *current_line_buffer++;
711 current_line_buffer++;
712 uint32 b = *current_line_buffer++;
713 *backbuffer++ = 0xFF000000 | (b << 16) | (g << 8) | r;
718 //Seems to me that this is NOT a valid mode--the JTRM seems to imply that you would need
719 //extra hardware outside of the Jaguar console to support this!
721 // 16 BPP direct mode rendering
723 void tom_render_16bpp_direct_scanline(uint32 * backbuffer)
725 uint16 width = tomWidth;
726 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
730 uint16 color = (*current_line_buffer++) << 8;
731 color |= *current_line_buffer++;
732 *backbuffer++ = color >> 1;
738 // 16 BPP RGB mode rendering
740 void tom_render_16bpp_rgb_scanline(uint32 * backbuffer)
742 //CHANGED TO 32BPP RENDERING
743 // 16 BPP RGB: 0-5 green, 6-10 blue, 11-15 red
745 uint16 width = tomWidth;
746 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
748 //New stuff--restrict our drawing...
749 uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
750 //NOTE: May have to check HDB2 as well!
751 int16 startPos = GET16(tomRam8, HDB1) - (vjs.hardwareTypeNTSC ? LEFT_VISIBLE_HC : LEFT_VISIBLE_HC_PAL); // Get start position in HC ticks
755 current_line_buffer += 2 * -startPos;
757 //This should likely be 4 instead of 2 (?--not sure)
758 backbuffer += 2 * startPos, width -= startPos;
762 uint32 color = (*current_line_buffer++) << 8;
763 color |= *current_line_buffer++;
764 *backbuffer++ = RGB16ToRGB32[color];
769 /////////////////////////////////////////////////////////////////////
770 // This stuff may just go away by itself, especially if we do some //
771 // good old OpenGL goodness... //
772 /////////////////////////////////////////////////////////////////////
774 void tom_render_16bpp_cry_rgb_mix_stretch_scanline(uint32 *backbuffer)
776 uint16 width=tomWidth;
777 uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
781 uint16 color = *current_line_buffer++;
783 color |= *current_line_buffer++;
784 *backbuffer++ = MIX16ToRGB32[color];
785 current_line_buffer += 2;
790 void tom_render_16bpp_cry_stretch_scanline(uint32 *backbuffer)
792 uint32 chrm, chrl, y;
794 uint16 width=tomWidth;
795 uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
800 color=*current_line_buffer++;
802 color|=*current_line_buffer++;
804 chrm = (color & 0xF000) >> 12;
805 chrl = (color & 0x0F00) >> 8;
806 y = (color & 0x00FF);
808 uint16 red = ((((uint32)redcv[chrm][chrl])*y)>>11);
809 uint16 green = ((((uint32)greencv[chrm][chrl])*y)>>11);
810 uint16 blue = ((((uint32)bluecv[chrm][chrl])*y)>>11);
813 color2=*current_line_buffer++;
815 color2|=*current_line_buffer++;
817 chrm = (color2 & 0xF000) >> 12;
818 chrl = (color2 & 0x0F00) >> 8;
819 y = (color2 & 0x00FF);
821 uint16 red2 = ((((uint32)redcv[chrm][chrl])*y)>>11);
822 uint16 green2 = ((((uint32)greencv[chrm][chrl])*y)>>11);
823 uint16 blue2 = ((((uint32)bluecv[chrm][chrl])*y)>>11);
826 green=(green+green2)>>1;
827 blue=(blue+blue2)>>1;
829 *backbuffer++=(red<<10)|(green<<5)|blue;
834 void tom_render_24bpp_stretch_scanline(uint32 *backbuffer)
836 uint16 width=tomWidth;
837 uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
841 uint16 green=*current_line_buffer++;
842 uint16 red=*current_line_buffer++;
843 /*uint16 nc=*/current_line_buffer++;
844 uint16 blue=*current_line_buffer++;
848 *backbuffer++=(red<<10)|(green<<5)|blue;
849 current_line_buffer+=4;
854 void tom_render_16bpp_direct_stretch_scanline(uint32 *backbuffer)
856 uint16 width=tomWidth;
857 uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
861 uint16 color=*current_line_buffer++;
863 color|=*current_line_buffer++;
866 current_line_buffer+=2;
871 void tom_render_16bpp_rgb_stretch_scanline(uint32 *backbuffer)
873 uint16 width=tomWidth;
874 uint8 *current_line_buffer=(uint8*)&tomRam8[0x1800];
878 uint16 color1=*current_line_buffer++;
880 color1|=*current_line_buffer++;
882 uint16 color2=*current_line_buffer++;
884 color2|=*current_line_buffer++;
886 uint16 red=(((color1&0x7c00)>>10)+((color2&0x7c00)>>10))>>1;
887 uint16 green=(((color1&0x00003e0)>>5)+((color2&0x00003e0)>>5))>>1;
888 uint16 blue=(((color1&0x0000001f))+((color2&0x0000001f)))>>1;
890 color1=(red<<10)|(blue<<5)|green;
891 *backbuffer++=color1;
896 void TOMResetBackbuffer(uint32 * backbuffer)
898 TOMBackbuffer = backbuffer;
902 // Process a single scanline
904 void TOMExecScanline(uint16 scanline, bool render)
906 bool inActiveDisplayArea = true;
908 //Interlacing is still not handled correctly here... !!! FIX !!!
909 if (scanline & 0x01) // Execute OP only on even lines (non-interlaced only!)
912 if (scanline >= (uint16)GET16(tomRam8, VDB) && scanline < (uint16)GET16(tomRam8, VDE))
916 uint8 * current_line_buffer = (uint8 *)&tomRam8[0x1800];
917 uint8 bgHI = tomRam8[BG], bgLO = tomRam8[BG + 1];
919 // Clear line buffer with BG
920 if (GET16(tomRam8, VMODE) & BGEN) // && (CRY or RGB16)...
921 for(uint32 i=0; i<720; i++)
922 *current_line_buffer++ = bgHI, *current_line_buffer++ = bgLO;
924 OPProcessList(scanline, render);
928 inActiveDisplayArea = false;
930 // Try to take PAL into account...
932 uint16 topVisible = (vjs.hardwareTypeNTSC ? TOP_VISIBLE_VC : TOP_VISIBLE_VC_PAL),
933 bottomVisible = (vjs.hardwareTypeNTSC ? BOTTOM_VISIBLE_VC : BOTTOM_VISIBLE_VC_PAL);
935 // Here's our virtualized scanline code...
937 if (scanline >= topVisible && scanline < bottomVisible)
939 if (inActiveDisplayArea)
941 //NOTE: The following doesn't put BORDER color on the sides... !!! FIX !!!
942 if (vjs.renderType == RT_NORMAL)
943 scanline_render[TOMGetVideoMode()](TOMBackbuffer);
947 tom_render_16bpp_cry_scanline,
948 tom_render_24bpp_scanline,
949 tom_render_16bpp_direct_scanline,
950 tom_render_16bpp_rgb_scanline,
951 tom_render_16bpp_cry_rgb_mix_scanline,
952 tom_render_24bpp_scanline,
953 tom_render_16bpp_direct_scanline,
954 tom_render_16bpp_rgb_scanline
956 #define MODE 0x0006 // Line buffer to video generator mode
957 #define VARMOD 0x0100 // Mixed CRY/RGB16 mode (only works in MODE 0!)
959 uint8 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
960 uint8 mode = ((GET16(tomRam8, VMODE) & MODE) >> 1);
961 bool varmod = GET16(tomRam8, VMODE) & VARMOD;
962 //The video texture line buffer ranges from 0 to 1279, with its left edge starting at LEFT_VISIBLE_HC.
963 //So, we need to start writing into the backbuffer at HDB1, using pwidth as our scaling factor. The
964 //way it generates its image on a real TV!
966 //So, for example, if HDB1 is less than LEFT_VISIBLE_HC, then we have to figure out where in the VTLB
967 //that we start writing pixels from the Jaguar line buffer (VTLB start=0, JLB=something).
973 // If outside of VDB & VDE, then display the border color
974 /* int16 * currentLineBuffer = TOMBackbuffer;
975 uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1];
976 uint16 pixel = ((r & 0xF8) << 7) | ((g & 0xF8) << 2) | (b >> 3);//*/
977 uint32 * currentLineBuffer = TOMBackbuffer;
978 uint8 g = tomRam8[BORD1], r = tomRam8[BORD1 + 1], b = tomRam8[BORD2 + 1];
979 uint32 pixel = 0xFF000000 | (b << 16) | (g << 8) | r;
981 for(uint32 i=0; i<tomWidth; i++)
982 *currentLineBuffer++ = pixel;
985 // TOMBackbuffer += GetSDLScreenPitch() / 2; // Returns bytes, but we need words
986 TOMBackbuffer += GetSDLScreenWidthInPixels();
991 // TOM initialization
998 // Setup the non-stretchy scanline rendering...
999 memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render));
1000 TOMFillLookupTables();
1007 WriteLog("TOM: Resolution %i x %i %s\n", TOMGetVideoModeWidth(), TOMGetVideoModeHeight(),
1008 videoMode_to_str[TOMGetVideoMode()]);
1009 // WriteLog("\ntom: object processor:\n");
1010 // WriteLog("tom: pointer to object list: 0x%.8x\n",op_get_list_pointer());
1011 // WriteLog("tom: INT1=0x%.2x%.2x\n",TOMReadByte(0xf000e0),TOMReadByte(0xf000e1));
1014 // memory_free(tomRam8);
1015 // memory_free(tom_cry_rgb_mix_lut);
1018 /*uint32 tom_getHBlankWidthInPixels(void)
1020 return hblankWidthInPixels;
1023 uint32 TOMGetVideoModeWidth(void)
1025 //These widths are pretty bogus. Should use HDB1/2 & HDE/HBB & PWIDTH to calc the width...
1026 // uint32 width[8] = { 1330, 665, 443, 332, 266, 222, 190, 166 };
1027 //Temporary, for testing Doom...
1028 // uint32 width[8] = { 1330, 665, 443, 332, 266, 222, 190, 332 };
1030 // Note that the following PWIDTH values have the following pixel aspect ratios:
1031 // PWIDTH = 1 -> 0.25:1 (1:4) pixels (X:Y ratio)
1032 // PWIDTH = 2 -> 0.50:1 (1:2) pixels
1033 // PWIDTH = 3 -> 0.75:1 (3:4) pixels
1034 // PWIDTH = 4 -> 1.00:1 (1:1) pixels
1035 // PWIDTH = 5 -> 1.25:1 (5:4) pixels
1036 // PWIDTH = 6 -> 1.50:1 (3:2) pixels
1037 // PWIDTH = 7 -> 1.75:1 (7:4) pixels
1038 // PWIDTH = 8 -> 2.00:1 (2:1) pixels
1040 // Also note that the JTRM says that PWIDTH of 4 gives pixels that are "about" square--
1041 // this implies that the other modes have pixels that are *not* square!
1042 // Also, I seriously doubt that you will see any games that use PWIDTH = 1!
1044 // NOTE: Even though the PWIDTH value is + 1, here we're using a zero-based index and
1045 // so we don't bother to add one...
1046 // return width[(GET16(tomRam8, VMODE) & PWIDTH) >> 9];
1048 // Now, we just calculate it...
1049 /* uint16 hdb1 = GET16(tomRam8, HDB1), hde = GET16(tomRam8, HDE),
1050 hbb = GET16(tomRam8, HBB), pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
1051 // return ((hbb < hde ? hbb : hde) - hdb1) / pwidth;
1052 //Temporary, for testing Doom...
1053 return ((hbb < hde ? hbb : hde) - hdb1) / (pwidth == 8 ? 4 : pwidth);*/
1055 // To make it easier to make a quasi-fixed display size, we restrict the viewing
1056 // area to an arbitrary range of the Horizontal Count.
1057 uint16 pwidth = ((GET16(tomRam8, VMODE) & PWIDTH) >> 9) + 1;
1058 return (vjs.hardwareTypeNTSC ? RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC : RIGHT_VISIBLE_HC_PAL - LEFT_VISIBLE_HC_PAL) / pwidth;
1059 //Temporary, for testing Doom...
1060 // return (RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC) / (pwidth == 8 ? 4 : pwidth);
1061 //// return (RIGHT_VISIBLE_HC - LEFT_VISIBLE_HC) / (pwidth == 4 ? 8 : pwidth);
1063 // More speculating...
1064 // According to the JTRM, the number of potential pixels across is given by the
1065 // Horizontal Period (HP - in NTSC this is 845). The Horizontal Count counts from
1066 // zero to this value twice per scanline (the high bit is set on the second count).
1067 // HBE and HBB define the absolute "black" limits of the screen, while HDB1/2 and
1068 // HDE determine the extent of the OP "on" time. I.e., when the OP is turned on by
1069 // HDB1, it starts fetching the line from position 0 in LBUF.
1071 // The trick, it would seem, is to figure out how long the typical visible scanline
1072 // of a TV is in HP ticks and limit the visible area to that (divided by PWIDTH, of
1073 // course). Using that length, we can establish an "absolute left display limit" with
1074 // which to measure HBB & HDB1/2 against when rendering LBUF (i.e., if HDB1 is 20 ticks
1075 // to the right of the ALDL and PWIDTH is 4, then start writing the LBUF starting at
1076 // backbuffer + 5 pixels).
1078 // That's basically what we're doing now...!
1081 // *** SPECULATION ***
1082 // It might work better to virtualize the height settings, i.e., set the vertical
1083 // height at 240 lines and clip using the VDB and VDE/VP registers...
1084 // Same with the width... [Width is pretty much virtualized now.]
1086 // Now that that the width is virtualized, let's virtualize the height. :-)
1087 uint32 TOMGetVideoModeHeight(void)
1089 // uint16 vmode = GET16(tomRam8, VMODE);
1090 // uint16 vbe = GET16(tomRam8, VBE);
1091 // uint16 vbb = GET16(tomRam8, VBB);
1092 // uint16 vdb = GET16(tomRam8, VDB);
1093 // uint16 vde = GET16(tomRam8, VDE);
1094 // uint16 vp = GET16(tomRam8, VP);
1096 /* if (vde == 0xFFFF)
1099 // return 227;//WAS:(vde/*-vdb*/) >> 1;
1100 // The video mode height probably works this way:
1101 // VC counts from 0 to VP. VDB starts the OP. Either when
1102 // VDE is reached or VP, the OP is stopped. Let's try it...
1103 // Also note that we're conveniently ignoring interlaced display modes...!
1104 // return ((vde > vp ? vp : vde) - vdb) >> 1;
1105 // return ((vde > vbb ? vbb : vde) - vdb) >> 1;
1106 //Let's try from the Vertical Blank interval...
1108 // return (vbb - vbe) >> 1; // Again, doesn't take interlacing into account...
1109 // This of course doesn't take interlacing into account. But I haven't seen any
1110 // Jaguar software that takes advantage of it either...
1111 //Also, doesn't reflect PAL Jaguar either... !!! FIX !!! [DONE]
1112 // return 240; // Set virtual screen height to 240 lines...
1113 return (vjs.hardwareTypeNTSC ? 240 : 256);
1118 // Now PAL friendly!
1124 memset(tomRam8, 0x00, 0x4000);
1126 if (vjs.hardwareTypeNTSC)
1128 SET16(tomRam8, MEMCON1, 0x1861);
1129 SET16(tomRam8, MEMCON2, 0x35CC);
1130 SET16(tomRam8, HP, 844); // Horizontal Period (1-based; HP=845)
1131 SET16(tomRam8, HBB, 1713); // Horizontal Blank Begin
1132 SET16(tomRam8, HBE, 125); // Horizontal Blank End
1133 SET16(tomRam8, HDE, 1665); // Horizontal Display End
1134 SET16(tomRam8, HDB1, 203); // Horizontal Display Begin 1
1135 SET16(tomRam8, VP, 523); // Vertical Period (1-based; in this case VP = 524)
1136 SET16(tomRam8, VBE, 24); // Vertical Blank End
1137 SET16(tomRam8, VDB, 38); // Vertical Display Begin
1138 SET16(tomRam8, VDE, 518); // Vertical Display End
1139 SET16(tomRam8, VBB, 500); // Vertical Blank Begin
1140 SET16(tomRam8, VS, 517); // Vertical Sync
1141 SET16(tomRam8, VMODE, 0x06C1);
1145 SET16(tomRam8, MEMCON1, 0x1861);
1146 SET16(tomRam8, MEMCON2, 0x35CC);
1147 SET16(tomRam8, HP, 850); // Horizontal Period
1148 SET16(tomRam8, HBB, 1711); // Horizontal Blank Begin
1149 SET16(tomRam8, HBE, 158); // Horizontal Blank End
1150 SET16(tomRam8, HDE, 1665); // Horizontal Display End
1151 SET16(tomRam8, HDB1, 203); // Horizontal Display Begin 1
1152 SET16(tomRam8, VP, 623); // Vertical Period (1-based; in this case VP = 624)
1153 SET16(tomRam8, VBE, 34); // Vertical Blank End
1154 SET16(tomRam8, VDB, 38); // Vertical Display Begin
1155 SET16(tomRam8, VDE, 518); // Vertical Display End
1156 SET16(tomRam8, VBB, 600); // Vertical Blank Begin
1157 SET16(tomRam8, VS, 618); // Vertical Sync
1158 SET16(tomRam8, VMODE, 0x06C1);
1164 tom_jerry_int_pending = 0;
1165 tom_timer_int_pending = 0;
1166 tom_object_int_pending = 0;
1167 tom_gpu_int_pending = 0;
1168 tom_video_int_pending = 0;
1170 tom_timer_prescaler = 0; // TOM PIT is disabled
1171 tom_timer_divider = 0;
1172 tom_timer_counter = 0;
1173 memcpy(scanline_render, scanline_render_normal, sizeof(scanline_render));
1177 // TOM byte access (read)
1179 uint8 TOMReadByte(uint32 offset, uint32 who/*=UNKNOWN*/)
1181 //???Is this needed???
1182 // It seems so. Perhaps it's the +$8000 offset being written to (32-bit interface)?
1183 // However, the 32-bit interface is WRITE ONLY, so that can't be it...
1184 // Also, the 68K CANNOT make use of the 32-bit interface, since its bus width is only 16-bits...
1185 // offset &= 0xFF3FFF;
1188 WriteLog("TOM: Reading byte at %06X\n", offset);
1191 if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20))
1192 return GPUReadByte(offset, who);
1193 else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000))
1194 return GPUReadByte(offset, who);
1195 /* else if ((offset >= 0xF00010) && (offset < 0xF00028))
1196 return OPReadByte(offset, who);*/
1197 else if ((offset >= 0xF02200) && (offset < 0xF022A0))
1198 return BlitterReadByte(offset, who);
1199 else if (offset == 0xF00050)
1200 return tom_timer_prescaler >> 8;
1201 else if (offset == 0xF00051)
1202 return tom_timer_prescaler & 0xFF;
1203 else if (offset == 0xF00052)
1204 return tom_timer_divider >> 8;
1205 else if (offset == 0xF00053)
1206 return tom_timer_divider & 0xFF;
1208 return tomRam8[offset & 0x3FFF];
1212 // TOM word access (read)
1214 uint16 TOMReadWord(uint32 offset, uint32 who/*=UNKNOWN*/)
1216 //???Is this needed???
1217 // offset &= 0xFF3FFF;
1219 WriteLog("TOM: Reading word at %06X\n", offset);
1221 if (offset >= 0xF02000 && offset <= 0xF020FF)
1222 WriteLog("TOM: Read attempted from GPU register file by %s (unimplemented)!\n", whoName[who]);
1224 if (offset == 0xF000E0)
1226 uint16 data = (tom_jerry_int_pending << 4) | (tom_timer_int_pending << 3)
1227 | (tom_object_int_pending << 2) | (tom_gpu_int_pending << 1)
1228 | (tom_video_int_pending << 0);
1229 //WriteLog("tom: interrupt status is 0x%.4x \n",data);
1232 //Shoud be handled by the jaguar main loop now... And it is! ;-)
1233 /* else if (offset == 0xF00006) // VC
1234 // What if we're in interlaced mode?
1235 // According to docs, in non-interlace mode VC is ALWAYS even...
1236 // return (tom_scanline << 1);// + 1;
1237 //But it's causing Rayman to be fucked up... Why???
1238 //Because VC is even in NI mode when calling the OP! That's why!
1239 return (tom_scanline << 1) + 1;//*/
1241 // F00004 R/W -----xxx xxxxxxxx HC - horizontal count
1242 // -----x-- -------- (which half of the display)
1243 // ------xx xxxxxxxx (10-bit counter)
1245 // This is a kludge to get the HC working somewhat... What we really should do here
1246 // is check what the global time is at the time of the read and calculate the correct HC...
1248 else if (offset == 0xF00004)
1249 return rand() & 0x03FF;
1250 else if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE + 0x20))
1251 return GPUReadWord(offset, who);
1252 else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE + 0x1000))
1253 return GPUReadWord(offset, who);
1254 /* else if ((offset >= 0xF00010) && (offset < 0xF00028))
1255 return OPReadWord(offset, who);*/
1256 else if ((offset >= 0xF02200) && (offset < 0xF022A0))
1257 return BlitterReadWord(offset, who);
1258 else if (offset == 0xF00050)
1259 return tom_timer_prescaler;
1260 else if (offset == 0xF00052)
1261 return tom_timer_divider;
1264 return (TOMReadByte(offset, who) << 8) | TOMReadByte(offset + 1, who);
1268 // TOM byte access (write)
1270 void TOMWriteByte(uint32 offset, uint8 data, uint32 who/*=UNKNOWN*/)
1272 //???Is this needed???
1273 // Perhaps on the writes--32-bit writes that is! And masked with FF7FFF...
1277 WriteLog("TOM: Writing byte %02X at %06X\n", data, offset);
1280 if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20))
1282 GPUWriteByte(offset, data, who);
1285 else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000))
1287 GPUWriteByte(offset, data, who);
1290 /* else if ((offset >= 0xF00010) && (offset < 0xF00028))
1292 OPWriteByte(offset, data, who);
1295 else if ((offset >= 0xF02200) && (offset < 0xF022A0))
1297 BlitterWriteByte(offset, data, who);
1300 else if (offset == 0xF00050)
1302 tom_timer_prescaler = (tom_timer_prescaler & 0x00FF) | (data << 8);
1306 else if (offset == 0xF00051)
1308 tom_timer_prescaler = (tom_timer_prescaler & 0xFF00) | data;
1312 else if (offset == 0xF00052)
1314 tom_timer_divider = (tom_timer_divider & 0x00FF) | (data << 8);
1318 else if (offset == 0xF00053)
1320 tom_timer_divider = (tom_timer_divider & 0xFF00) | data;
1324 else if (offset >= 0xF00400 && offset <= 0xF007FF) // CLUT (A & B)
1326 // Writing to one CLUT writes to the other
1327 offset &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF)
1328 tomRam8[offset] = data, tomRam8[offset + 0x200] = data;
1331 tomRam8[offset & 0x3FFF] = data;
1335 // TOM word access (write)
1337 void TOMWriteWord(uint32 offset, uint16 data, uint32 who/*=UNKNOWN*/)
1339 //???Is this needed???
1343 WriteLog("TOM: Writing word %04X at %06X\n", data, offset);
1345 if (offset == 0xF00000 + MEMCON1)
1346 WriteLog("TOM: Memory Configuration 1 written by %s: %04X\n", whoName[who], data);
1347 if (offset == 0xF00000 + MEMCON2)
1348 WriteLog("TOM: Memory Configuration 2 written by %s: %04X\n", whoName[who], data);
1349 if (offset >= 0xF02000 && offset <= 0xF020FF)
1350 WriteLog("TOM: Write attempted to GPU register file by %s (unimplemented)!\n", whoName[who]);
1352 if ((offset >= GPU_CONTROL_RAM_BASE) && (offset < GPU_CONTROL_RAM_BASE+0x20))
1354 GPUWriteWord(offset, data, who);
1357 else if ((offset >= GPU_WORK_RAM_BASE) && (offset < GPU_WORK_RAM_BASE+0x1000))
1359 GPUWriteWord(offset, data, who);
1362 //What's so special about this?
1363 /* else if ((offset >= 0xF00000) && (offset < 0xF00002))
1365 TOMWriteByte(offset, data >> 8);
1366 TOMWriteByte(offset+1, data & 0xFF);
1368 /* else if ((offset >= 0xF00010) && (offset < 0xF00028))
1370 OPWriteWord(offset, data, who);
1373 else if (offset == 0xF00050)
1375 tom_timer_prescaler = data;
1379 else if (offset == 0xF00052)
1381 tom_timer_divider = data;
1385 else if (offset == 0xF000E0)
1389 tom_video_int_pending = 0;
1391 tom_gpu_int_pending = 0;
1393 tom_object_int_pending = 0;
1395 tom_timer_int_pending = 0;
1397 tom_jerry_int_pending = 0;
1399 else if ((offset >= 0xF02200) && (offset <= 0xF0229F))
1401 BlitterWriteWord(offset, data, who);
1404 else if (offset >= 0xF00400 && offset <= 0xF007FE) // CLUT (A & B)
1406 // Writing to one CLUT writes to the other
1407 offset &= 0x5FF; // Mask out $F00600 (restrict to $F00400-5FF)
1408 // Watch out for unaligned writes here! (Not fixed yet)
1409 SET16(tomRam8, offset, data);
1410 SET16(tomRam8, offset + 0x200, data);
1414 if (offset == 0x28) // VMODE (Why? Why not OBF?)
1415 //Actually, we should check to see if the Enable bit of VMODE is set before doing this... !!! FIX !!!
1416 #warning Actually, we should check to see if the Enable bit of VMODE is set before doing this... !!! FIX !!!
1417 objectp_running = 1;
1419 if (offset >= 0x30 && offset <= 0x4E)
1420 data &= 0x07FF; // These are (mostly) 11-bit registers
1421 if (offset == 0x2E || offset == 0x36 || offset == 0x54)
1422 data &= 0x03FF; // These are all 10-bit registers
1424 TOMWriteByte(offset, data >> 8, who);
1425 TOMWriteByte(offset+1, data & 0xFF, who);
1428 WriteLog("TOM: Vertical Display Begin written by %s: %u\n", whoName[who], data);
1430 WriteLog("TOM: Vertical Display End written by %s: %u\n", whoName[who], data);
1432 WriteLog("TOM: Vertical Period written by %s: %u (%sinterlaced)\n", whoName[who], data, (data & 0x01 ? "non-" : ""));
1434 WriteLog("TOM: Horizontal Display Begin 1 written by %s: %u\n", whoName[who], data);
1436 WriteLog("TOM: Horizontal Display End written by %s: %u\n", whoName[who], data);
1438 WriteLog("TOM: Horizontal Period written by %s: %u (+1*2 = %u)\n", whoName[who], data, (data + 1) * 2);
1440 WriteLog("TOM: Vertical Blank Begin written by %s: %u\n", whoName[who], data);
1442 WriteLog("TOM: Vertical Blank End written by %s: %u\n", whoName[who], data);
1444 WriteLog("TOM: Vertical Sync written by %s: %u\n", whoName[who], data);
1446 WriteLog("TOM: Vertical Interrupt written by %s: %u\n", whoName[who], data);
1448 WriteLog("TOM: Horizontal Blank Begin written by %s: %u\n", whoName[who], data);
1450 WriteLog("TOM: Horizontal Blank End written by %s: %u\n", whoName[who], data);
1451 if (offset == VMODE)
1452 WriteLog("TOM: Video Mode written by %s: %04X. PWIDTH = %u, MODE = %s, flags:%s%s (VC = %u)\n", whoName[who], data, ((data >> 9) & 0x07) + 1, videoMode_to_str[(data & MODE) >> 1], (data & BGEN ? " BGEN" : ""), (data & VARMOD ? " VARMOD" : ""), GET16(tomRam8, VC));
1454 // detect screen resolution changes
1455 //This may go away in the future, if we do the virtualized screen thing...
1456 //This may go away soon!
1457 if ((offset >= 0x28) && (offset <= 0x4F))
1459 uint32 width = TOMGetVideoModeWidth(), height = TOMGetVideoModeHeight();
1461 if ((width != tomWidth) || (height != tomHeight))
1463 tomWidth = width, tomHeight = height;
1465 if (vjs.renderType == RT_NORMAL)
1466 ResizeScreen(tomWidth, tomHeight);
1471 int TOMIRQEnabled(int irq)
1473 // This is the correct byte in big endian... D'oh!
1474 // return jaguar_byte_read(0xF000E1) & (1 << irq);
1475 return tomRam8[INT1 + 1/*0xE1*/] & (1 << irq);
1479 /*void tom_set_irq_latch(int irq, int enabled)
1481 tomRam8[0xE0] = (tomRam8[0xE0] & (~(1<<irq))) | (enabled ? (1<<irq) : 0);
1485 /*uint16 tom_irq_control_reg(void)
1487 return (tomRam8[0xE0] << 8) | tomRam8[0xE1];
1491 // TOM Programmable Interrupt Timer handler
1492 // NOTE: TOM's PIT is only enabled if the prescaler is != 0
1493 // The PIT only generates an interrupt when it counts down to zero, not when loaded!
1495 void TOMPITCallback(void);
1497 void TOMResetPIT(void)
1499 #ifndef NEW_TIMER_SYSTEM
1500 //Probably should *add* this amount to the counter to retain cycle accuracy! !!! FIX !!! [DONE]
1501 //Also, why +1??? 'Cause that's what it says in the JTRM...!
1502 //There is a small problem with this approach: If both the prescaler and the divider are equal
1503 //to $FFFF then the counter won't be large enough to handle it. !!! FIX !!!
1504 if (tom_timer_prescaler)
1505 tom_timer_counter += (1 + tom_timer_prescaler) * (1 + tom_timer_divider);
1506 // WriteLog("tom: reseting timer to 0x%.8x (%i)\n",tom_timer_counter,tom_timer_counter);
1508 // Need to remove previous timer from the queue, if it exists...
1509 RemoveCallback(TOMPITCallback);
1511 if (tom_timer_prescaler)
1513 double usecs = (float)(tom_timer_prescaler + 1) * (float)(tom_timer_divider + 1) * RISC_CYCLE_IN_USEC;
1514 SetCallbackTime(TOMPITCallback, usecs);
1520 // TOM Programmable Interrupt Timer handler
1521 // NOTE: TOM's PIT is only enabled if the prescaler is != 0
1523 //NOTE: This is only used by the old execution code... Safe to remove
1524 // once the timer system is stable.
1525 void TOMExecPIT(uint32 cycles)
1527 if (tom_timer_prescaler)
1529 tom_timer_counter -= cycles;
1531 if (tom_timer_counter <= 0)
1533 TOMSetPendingTimerInt();
1534 GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // GPUSetIRQLine does the 'IRQ enabled' checking
1536 if (TOMIRQEnabled(IRQ_TIMER))
1537 m68k_set_irq(7); // Cause a 68000 NMI...
1545 void TOMPITCallback(void)
1547 // INT1_RREG |= 0x08; // Set TOM PIT interrupt pending
1548 TOMSetPendingTimerInt();
1549 GPUSetIRQLine(GPUIRQ_TIMER, ASSERT_LINE); // It does the 'IRQ enabled' checking
1551 // if (INT1_WREG & 0x08)
1552 if (TOMIRQEnabled(IRQ_TIMER))
1553 m68k_set_irq(7); // Generate 68K NMI