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32x: packed pixel mode (works over 68k)

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git-svn-id: file:///home/notaz/opt/svn/PicoDrive@773 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz 2009-09-12 21:54:46 +00:00
parent be2c420828
commit 974fdb5bfd
15 changed files with 330 additions and 91 deletions
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62
pico/32x/32x.c
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@ -1,4 +1,5 @@
#include "../pico_int.h"
#include "../sound/ym2612.h"
struct Pico32x Pico32x;
@ -9,23 +10,68 @@ void Pico32xStartup(void)
PicoAHW |= PAHW_32X;
PicoMemSetup32x();
// probably should only done on power
// memset(&Pico32x, 0, sizeof(Pico32x));
if (!Pico.m.pal)
Pico32x.vdp_regs[0] |= 0x8000;
Pico32x.vdp_regs[0] |= P32XV_nPAL;
// prefill checksum
Pico32x.regs[0x28/2] = *(unsigned short *)(Pico.rom + 0x18e);
emu_32x_startup();
}
void Pico32xInit(void)
{
// XXX: mv
Pico32x.regs[0] = 0x0082;
}
void PicoPower32x(void)
{
memset(&Pico32x, 0, sizeof(Pico32x));
Pico32x.regs[0] = 0x0082; // SH2 reset?
Pico32x.vdp_regs[0x0a/2] = P32XV_VBLK|P32XV_HBLK|P32XV_PEN;
}
void PicoReset32x(void)
{
}
static void p32x_start_blank(void)
{
// enter vblank
Pico32x.vdp_regs[0x0a/2] |= P32XV_VBLK|P32XV_PEN;
// swap waits until vblank
if ((Pico32x.vdp_regs[0x0a/2] ^ Pico32x.pending_fb) & P32XV_FS) {
Pico32x.vdp_regs[0x0a/2] &= ~P32XV_FS;
Pico32x.vdp_regs[0x0a/2] |= Pico32x.pending_fb;
Pico32xSwapDRAM(Pico32x.pending_fb ^ 1);
}
}
// FIXME..
static __inline void SekRunM68k(int cyc)
{
int cyc_do;
SekCycleAim+=cyc;
if ((cyc_do=SekCycleAim-SekCycleCnt) <= 0) return;
#if defined(EMU_CORE_DEBUG)
// this means we do run-compare
SekCycleCnt+=CM_compareRun(cyc_do, 0);
#elif defined(EMU_C68K)
PicoCpuCM68k.cycles=cyc_do;
CycloneRun(&PicoCpuCM68k);
SekCycleCnt+=cyc_do-PicoCpuCM68k.cycles;
#elif defined(EMU_M68K)
SekCycleCnt+=m68k_execute(cyc_do);
#elif defined(EMU_F68K)
SekCycleCnt+=fm68k_emulate(cyc_do+1, 0, 0);
#endif
}
#define PICO_32X
#include "../pico_cmn.c"
void PicoFrame32x(void)
{
if ((Pico32x.vdp_regs[0] & 3 ) != 0) // no forced blanking
Pico32x.vdp_regs[0x0a/2] &= ~(P32XV_VBLK|P32XV_PEN); // get out of vblank
PicoFrameStart();
PicoFrameHints();
}