static inline int T_gens_do_MD_frame(void)
{
int *buf[2];
int HInt_Counter;
// Set the number of visible lines.
VDP_SET_VISIBLE_LINES();
YM_Buf[0] = PSG_Buf[0] = Seg_L;
YM_Buf[1] = PSG_Buf[1] = Seg_R;
YM_Len = PSG_Len = 0;
Cycles_M68K = Cycles_Z80 = 0;
Last_BUS_REQ_Cnt = -1000;
main68k_tripOdometer();
mdZ80_clear_odo(&M_Z80);
// Raise the MDP_EVENT_PRE_FRAME event.
EventMgr::RaiseEvent(MDP_EVENT_PRE_FRAME, NULL);
VRam_Flag = 1;
VDP_Status &= 0xFFF7; // Clear V Blank
if (VDP_Reg.Set4 & 0x2)
VDP_Status ^= 0x0010;
HInt_Counter = VDP_Reg.H_Int; // Hint_Counter = step H interrupt
for (VDP_Current_Line = 0;
VDP_Current_Line < VDP_Num_Vis_Lines;
VDP_Current_Line++)
{
buf[0] = Seg_L + Sound_Extrapol[VDP_Current_Line][0];
buf[1] = Seg_R + Sound_Extrapol[VDP_Current_Line][0];
YM2612_DacAndTimers_Update(buf, Sound_Extrapol[VDP_Current_Line][1]);
YM_Len += Sound_Extrapol[VDP_Current_Line][1];
PSG_Len += Sound_Extrapol[VDP_Current_Line][1];
Fix_Controllers();
Cycles_M68K += CPL_M68K;
Cycles_Z80 += CPL_Z80;
if (DMAT_Length)
main68k_addCycles(Update_DMA());
VDP_Status |= 0x0004; // HBlank = 1
main68k_exec (Cycles_M68K - 404);
VDP_Status &= 0xFFFB; // HBlank = 0
if (--HInt_Counter < 0)
{
HInt_Counter = VDP_Reg.H_Int;
VDP_Int |= 0x4;
VDP_Update_IRQ_Line();
}
if (VDP)
{
// VDP needs to be updated.
Render_Line();
}
main68k_exec(Cycles_M68K);
Z80_EXEC(0);
}
buf[0] = Seg_L + Sound_Extrapol[VDP_Current_Line][0];
buf[1] = Seg_R + Sound_Extrapol[VDP_Current_Line][0];
YM2612_DacAndTimers_Update (buf, Sound_Extrapol[VDP_Current_Line][1]);
YM_Len += Sound_Extrapol[VDP_Current_Line][1];
PSG_Len += Sound_Extrapol[VDP_Current_Line][1];
Fix_Controllers();
Cycles_M68K += CPL_M68K;
Cycles_Z80 += CPL_Z80;
if (DMAT_Length)
main68k_addCycles(Update_DMA());
if (--HInt_Counter < 0)
{
VDP_Int |= 0x4;
VDP_Update_IRQ_Line();
}
CONGRATULATIONS_PRECHECK;
VDP_Status |= 0x000C; // VBlank = 1 et HBlank = 1 (retour de balayage vertical en cours)
main68k_exec(Cycles_M68K - 360);
Z80_EXEC(168);
CONGRATULATIONS_POSTCHECK;
VDP_Status &= 0xFFFB; // HBlank = 0
VDP_Status |= 0x0080; // V Int happened
VDP_Int |= 0x8;
VDP_Update_IRQ_Line();
mdZ80_interrupt(&M_Z80, 0xFF);
main68k_exec(Cycles_M68K);
Z80_EXEC(0);
for (VDP_Current_Line++;
VDP_Current_Line < VDP_Num_Lines;
VDP_Current_Line++)
{
buf[0] = Seg_L + Sound_Extrapol[VDP_Current_Line][0];
buf[1] = Seg_R + Sound_Extrapol[VDP_Current_Line][0];
YM2612_DacAndTimers_Update (buf, Sound_Extrapol[VDP_Current_Line][1]);
YM_Len += Sound_Extrapol[VDP_Current_Line][1];
PSG_Len += Sound_Extrapol[VDP_Current_Line][1];
Fix_Controllers();
Cycles_M68K += CPL_M68K;
Cycles_Z80 += CPL_Z80;
if (DMAT_Length)
main68k_addCycles(Update_DMA());
VDP_Status |= 0x0004; // HBlank = 1
main68k_exec(Cycles_M68K - 404);
VDP_Status &= 0xFFFB; // HBlank = 0
main68k_exec(Cycles_M68K);
Z80_EXEC(0);
}
PSG_Special_Update();
YM2612_Special_Update();
// If WAV or GYM is being dumped, update the WAV or GYM.
// TODO: VGM dumping
if (WAV_Dumping)
wav_dump_update();
if (GYM_Dumping)
gym_dump_update(0, 0, 0);
// Raise the MDP_EVENT_POST_FRAME event.
mdp_event_post_frame_t post_frame;
if (bppMD == 32)
post_frame.md_screen = &MD_Screen32[8];
else
post_frame.md_screen = &MD_Screen[8];
post_frame.width = (vdp_isH40() ? 320 : 256);
post_frame.height = VDP_Num_Vis_Lines;
post_frame.pitch = 336;
post_frame.bpp = bppMD;
EventMgr::RaiseEvent(MDP_EVENT_POST_FRAME, &post_frame);
return 1;
}
/**
* Assert an interrupt. (IRQ)
* @param irq Interrupt request.
*/
inline void Z80::Interrupt(uint8_t irq)
{
mdZ80_interrupt(ms_Z80, irq);
}