case OBJECT_TYPE_BRANCH:
{
uint16_t ypos = (p0 >> 3) & 0x7FF;
-// NOTE: The JTRM sez there are only 2 bits used for the CC, but lists *five*
-// conditions! Need at least one more bit for that! :-P
-// Also, the ASIC nets imply that it uses bits 14-16 (height in BM & SBM objects)
-#warning "!!! Possibly bad CC handling in OP (missing 1 bit) !!!"
- uint8_t cc = (p0 >> 14) & 0x03;
+ // JTRM is wrong: CC is bits 14-16 (3 bits, *not* 2)
+ uint8_t cc = (p0 >> 14) & 0x07;
uint32_t link = (p0 >> 21) & 0x3FFFF8;
-// if ((ypos!=507)&&(ypos!=25))
-// WriteLog("\t%i%s%i link=0x%.8x\n",halfline,condition_to_str[cc],ypos>>1,link);
switch (cc)
{
case CONDITION_EQUAL:
- if (TOMReadWord(0xF00006, OP) == ypos || ypos == 0x7FF)
+ if (halfline == ypos || ypos == 0x7FF)
op_pointer = link;
break;
case CONDITION_LESS_THAN:
- if (TOMReadWord(0xF00006, OP) < ypos)
+ if (halfline < ypos)
op_pointer = link;
break;
case CONDITION_GREATER_THAN:
- if (TOMReadWord(0xF00006, OP) > ypos)
+ if (halfline > ypos)
op_pointer = link;
break;
case CONDITION_OP_FLAG_SET:
op_pointer = link;
break;
case CONDITION_SECOND_HALF_LINE:
-//Here's the ASIC code:
-// ND4(cctrue5, newheight[2], heightl[1], heightl[0], hcb[10]);
-//which means, do the link if bit 10 of HC is set...
-
- // This basically means branch if bit 10 of HC is set
-#warning "Unhandled condition code causes emulator to crash... !!! FIX !!!"
- WriteLog("OP: Unexpected CONDITION_SECOND_HALF_LINE in BRANCH object\nOP: shutting down!\n");
- LogDone();
- exit(0);
+ // Branch if bit 10 of HC is set...
+ if (TOMGetHC() & 0x0400)
+ op_pointer = link;
break;
default:
// Basically, if you do this, the OP does nothing. :-)
}
case OBJECT_TYPE_STOP:
{
-//op_start_log = 0;
- // unsure
-//WriteLog("OP: --> STOP\n");
-// op_set_status_register(((p0>>3) & 0xFFFFFFFF));
-//This seems more likely...
OPSetCurrentObject(p0);
- if (p0 & 0x08)
+ if ((p0 & 0x08) && TOMIRQEnabled(IRQ_OPFLAG))
{
- // We need to check whether these interrupts are enabled or
- // not, THEN set an IRQ + pending flag if necessary...
- if (TOMIRQEnabled(IRQ_OPFLAG))
- {
- TOMSetPendingObjectInt();
- m68k_set_irq(2); // Cause a 68K IPL 2 to occur...
- }
+ TOMSetPendingObjectInt();
+ m68k_set_irq(2); // Cause a 68K IPL 2 to occur...
}
+ // Bail out, we're done...
return;
-// break;
}
default:
-// WriteLog("op: unknown object type %i\n", ((uint8_t)p0 & 0x07));
-// return;
- ;
+ WriteLog("OP: Unknown object type %i\n", (uint8_t)p0 & 0x07);
}
// Here is a little sanity check to keep the OP from locking up the
{
// Need to make sure that when writing that it stays within the line buffer...
// LBUF ($F01800 - $F01D9E) 360 x 32-bit RAM
- uint8_t depth = (p1 >> 12) & 0x07; // Color depth of image
+ uint8_t depth = (p1 >> 12) & 0x07; // Color depth of image
int32_t xpos = ((int16_t)((p1 << 4) & 0xFFFF)) >> 4;// Image xpos in LBUF
- uint32_t iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
- uint32_t data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
-//#ifdef OP_DEBUG_BMP
+ uint32_t iwidth = (p1 >> 28) & 0x3FF; // Image width in *phrases*
+ uint32_t data = (p0 >> 40) & 0xFFFFF8; // Pixel data address
uint32_t firstPix = (p1 >> 49) & 0x3F;
// "The LSB is significant only for scaled objects..." -JTRM
- // "In 1 BPP mode, all five bits are significant. In 2 BPP mode, the top four are significant..."
+ // "In 1 BPP mode, all five bits are significant. In 2 BPP mode, the top
+ // four are significant..."
firstPix &= 0x3E;
-//#endif
+
// We can ignore the RELEASE (high order) bit for now--probably forever...!
// uint8_t flags = (p1 >> 45) & 0x0F; // REFLECT, RMW, TRANS, RELEASE
//Optimize: break these out to their own BOOL values
- uint8_t flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
+ uint8_t flags = (p1 >> 45) & 0x07; // REFLECT (0), RMW (1), TRANS (2)
bool flagREFLECT = (flags & OPFLAG_REFLECT ? true : false),
flagRMW = (flags & OPFLAG_RMW ? true : false),
flagTRANS = (flags & OPFLAG_TRANS ? true : false);
// "For images with 1 to 4 bits/pixel the top 7 to 4 bits of the index
// provide the most significant bits of the palette address."
- uint8_t index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
- uint32_t pitch = (p1 >> 15) & 0x07; // Phrase pitch
- pitch <<= 3; // Optimization: Multiply pitch by 8
+ uint8_t index = (p1 >> 37) & 0xFE; // CLUT index offset (upper pix, 1-4 bpp)
+ uint32_t pitch = (p1 >> 15) & 0x07; // Phrase pitch
+ pitch <<= 3; // Optimization: Multiply pitch by 8
// int16_t scanlineWidth = tom_getVideoModeWidth();
uint8_t * tomRam8 = TOMGetRamPointer();
uint8_t * paletteRAM = &tomRam8[0x400];
- // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct copies--NOT
- // for use when using endian-corrected data (i.e., any of the *_word_read functions!)
+ // This is OK as long as it's used correctly: For 16-bit RAM to RAM direct
+ // copies--NOT for use when using endian-corrected data (i.e., any of the
+ // *_word_read functions!)
uint16_t * paletteRAM16 = (uint16_t *)paletteRAM;
// WriteLog("bitmap %ix? %ibpp at %i,? firstpix=? data=0x%.8x pitch %i hflipped=%s dwidth=? (linked to ?) RMW=%s Tranparent=%s\n",
// iwidth, op_bitmap_bit_depth[bitdepth], xpos, ptr, pitch, (flags&OPFLAG_REFLECT ? "yes" : "no"), (flags&OPFLAG_RMW ? "yes" : "no"), (flags&OPFLAG_TRANS ? "yes" : "no"));
// Is it OK to have a 0 for the data width??? (i.e., undocumented?)
-// Seems to be... Seems that dwidth *can* be zero (i.e., reuse same line) as well.
+// Seems to be... Seems that dwidth *can* be zero (i.e., reuse same line) as
+// well.
// Pitch == 0 is OK too...
-//kludge: Seems that the OP treats iwidth == 0 as iwidth == 1... Need to investigate
-// on real hardware...
+//kludge: Seems that the OP treats iwidth == 0 as iwidth == 1... Need to
+// investigate on real hardware...
#warning "!!! Need to investigate iwidth == 0 behavior on real hardware !!!"
if (iwidth == 0)
iwidth = 1;
// if (!render || op_pointer == 0 || ptr == 0 || pitch == 0)
-//I'm not convinced that we need to concern ourselves with data & op_pointer here either!
+//I'm not convinced that we need to concern ourselves with data & op_pointer
+//here either!
if (!render || iwidth == 0)
return;
-//OK, so we know the position in the line buffer is correct. It's the clipping in
-//24bpp mode that's wrong!
+//OK, so we know the position in the line buffer is correct. It's the clipping
+//in 24bpp mode that's wrong!
#if 0
//This is a total kludge, based upon the fact that 24BPP mode puts *4* bytes
//into the line buffer for each pixel.
: -((phraseWidthToPixels[depth] * iwidth) + 1));
uint32_t clippedWidth = 0, phraseClippedWidth = 0, dataClippedWidth = 0;//, phrasePixel = 0;
bool in24BPPMode = (((GET16(tomRam8, 0x0028) >> 1) & 0x03) == 1 ? true : false); // VMODE
- // Not sure if this is Jaguar Two only location or what...
- // From the docs, it is... If we want to limit here we should think of something else.
-// int32_t limit = GET16(tom_ram_8, 0x0008); // LIMIT
-// int32_t limit = 720;
-// int32_t lbufWidth = (!in24BPPMode ? limit - 1 : (limit / 2) - 1); // Zero based limit...
-//printf("[OP:xpos=%i,spos=%i,epos=%i>", xpos, startPos, endPos);
// This is correct, the OP line buffer is a constant size...
int32_t limit = 720;
int32_t lbufWidth = 719;
- // If the image is completely to the left or right of the line buffer, then bail.
+ // If the image is completely to the left or right of the line buffer, then
+ // bail.
//If in REFLECT mode, then these values are swapped! !!! FIX !!! [DONE]
//There are four possibilities:
// 1. image sits on left edge and no REFLECT; starts out of bounds but ends in bounds.
if (depth > 5)
WriteLog("OP: We're about to encounter a divide by zero error!\n");
// NOTE: We're just using endPos to figure out how much, if any, to clip by.
- // ALSO: There may be another case where we start out of bounds and end out of bounds...!
+ // ALSO: There may be another case where we start out of bounds and end out
+ // of bounds...!
// !!! FIX !!!
if (startPos < 0) // Case #1: Begin out, end in, L to R
clippedWidth = 0 - startPos,
for(int i=0; i<4; i++)
{
uint8_t bitsHi = pixels >> 56, bitsLo = pixels >> 48;
-// Seems to me that both of these are in the same endian, so we could cast it as
-// uint16_t * and do straight across copies (what about 24 bpp? Treat it differently...)
-// This only works for the palettized modes (1 - 8 BPP), since we actually have to
-// copy data from memory in 16 BPP mode (or does it? Isn't this the same as the CLUT case?)
-// No, it isn't because we read the memory in an endian safe way--it *won't* work...
+// Seems to me that both of these are in the same endian, so we could cast it
+// as uint16_t * and do straight across copies (what about 24 bpp? Treat it
+// differently...) This only works for the palettized modes (1 - 8 BPP), since
+// we actually have to copy data from memory in 16 BPP mode (or does it? Isn't
+// this the same as the CLUT case?) No, it isn't because we read the memory in
+// an endian safe way--it *won't* work...
//This doesn't seem right... Let's try the encoded black value ($8800):
//Apparently, CRY 0 maps to $8800...
if (flagTRANS && ((bitsLo | bitsHi) == 0))
projects / virtualjaguar / blobdiff