10 #define VIDEO_MODE_16BPP_CRY 0
11 #define VIDEO_MODE_24BPP_RGB 1
12 #define VIDEO_MODE_16BPP_DIRECT 2
13 #define VIDEO_MODE_16BPP_RGB 3
15 // Virtual screen size stuff
17 // NB: This virtual width is for PWIDTH = 4
18 //#define VIRTUAL_SCREEN_WIDTH 320
19 #define VIRTUAL_SCREEN_WIDTH 340
20 #define VIRTUAL_SCREEN_HEIGHT_NTSC 240
21 #define VIRTUAL_SCREEN_HEIGHT_PAL 256
23 // 68000 Interrupt bit positions (enabled at $F000E0)
25 enum { IRQ_VIDEO = 0, IRQ_GPU, IRQ_OPFLAG, IRQ_TIMER, IRQ_DSP };
31 uint8 TOMReadByte(uint32 offset, uint32 who = UNKNOWN);
32 uint16 TOMReadWord(uint32 offset, uint32 who = UNKNOWN);
33 void TOMWriteByte(uint32 offset, uint8 data, uint32 who = UNKNOWN);
34 void TOMWriteWord(uint32 offset, uint16 data, uint32 who = UNKNOWN);
36 void TOMExecHalfline(uint16 halfline, bool render);
37 uint32 TOMGetVideoModeWidth(void);
38 uint32 TOMGetVideoModeHeight(void);
39 uint8 TOMGetVideoMode(void);
40 uint8 * TOMGetRamPointer(void);
41 uint16 TOMGetHDB(void);
42 uint16 TOMGetVDB(void);
44 int TOMIRQEnabled(int irq);
45 uint16 TOMIRQControlReg(void);
46 void TOMSetIRQLatch(int irq, int enabled);
47 void TOMExecPIT(uint32 cycles);
48 void TOMSetPendingJERRYInt(void);
49 void TOMSetPendingTimerInt(void);
50 void TOMSetPendingObjectInt(void);
51 void TOMSetPendingGPUInt(void);
52 void TOMSetPendingVideoInt(void);
53 void TOMResetPIT(void);
57 extern uint32 tomWidth;
58 extern uint32 tomHeight;
59 extern uint8 tomRam8[];
60 extern uint32 tomTimerPrescaler;
61 extern uint32 tomTimerDivider;
62 extern int32 tomTimerCounter;
64 extern uint32 screenPitch;
65 extern uint32 * screenBuffer;