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32x, minor poll detection fix

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This commit is contained in:
kub 2022-10-14 18:46:49 +00:00
parent b074a2b5b6
commit c9d5f41b0a
2 changed files with 15 additions and 13 deletions
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11
pico/32x/32x.c
View file

@ -54,14 +54,14 @@ void p32x_update_irls(SH2 *active_sh2, unsigned int m68k_cycles)
mrun = sh2_irl_irq(&msh2, mlvl, msh2.state & SH2_STATE_RUN);
if (mrun) {
p32x_sh2_poll_event(&msh2, SH2_IDLE_STATES, m68k_cycles);
p32x_sh2_poll_event(&msh2, SH2_IDLE_STATES & ~SH2_STATE_SLEEP, m68k_cycles);
if (msh2.state & SH2_STATE_RUN)
sh2_end_run(&msh2, 0);
}
srun = sh2_irl_irq(&ssh2, slvl, ssh2.state & SH2_STATE_RUN);
if (srun) {
p32x_sh2_poll_event(&ssh2, SH2_IDLE_STATES, m68k_cycles);
p32x_sh2_poll_event(&ssh2, SH2_IDLE_STATES & ~SH2_STATE_SLEEP, m68k_cycles);
if (ssh2.state & SH2_STATE_RUN)
sh2_end_run(&ssh2, 0);
}
@ -268,6 +268,9 @@ static void p32x_end_blank(void)
Pico32x.vdp_regs[0x0a/2] &= ~P32XV_PEN; // no palette access
if (!(Pico32x.sh2_regs[0] & 0x80))
p32x_schedule_hint(NULL, SekCyclesDone());
p32x_sh2_poll_event(&msh2, SH2_STATE_VPOLL, SekCyclesDone());
p32x_sh2_poll_event(&ssh2, SH2_STATE_VPOLL, SekCyclesDone());
}
void p32x_schedule_hint(SH2 *sh2, unsigned int m68k_cycles)
@ -577,12 +580,10 @@ void sync_sh2s_lockstep(unsigned int m68k_target)
void PicoFrame32x(void)
{
// XXX this is somehow misplaced here
sh2_execute_prepare(&msh2, PicoIn.opt & POPT_EN_DRC);
sh2_execute_prepare(&ssh2, PicoIn.opt & POPT_EN_DRC);
p32x_sh2_poll_event(&msh2, SH2_STATE_VPOLL, SekCyclesDone());
p32x_sh2_poll_event(&ssh2, SH2_STATE_VPOLL, SekCyclesDone());
if (PicoIn.AHW & PAHW_MCD)
pcd_prepare_frame();

17
pico/pico_cmn.c
View file

@ -162,9 +162,6 @@ static int PicoFrameHints(void)
SyncCPUs(Pico.t.m68c_aim);
// === VBLANK, 1st line ===
pv->status &= ~PVS_ACTIVE;
if (!skip)
{
if (Pico.est.DrawScanline < y)
@ -177,6 +174,9 @@ static int PicoFrameHints(void)
p32x_render_frame();
#endif
// === VBLANK, 1st line ===
pv->status &= ~PVS_ACTIVE;
memcpy(PicoIn.padInt, PicoIn.pad, sizeof(PicoIn.padInt));
PAD_DELAY();
@ -188,6 +188,9 @@ static int PicoFrameHints(void)
}
pv->status |= SR_VB | PVS_VB2; // go into vblank
#ifdef PICO_32X
p32x_start_blank();
#endif
// the following SekRun is there for several reasons:
// there must be a delay after vblank bit is set and irq is asserted (Mazin Saga)
@ -198,8 +201,11 @@ static int PicoFrameHints(void)
do_timing_hacks_start(pv);
CPUS_RUN(CYCLES_M68K_VINT_LAG);
SyncCPUs(Pico.t.m68c_aim);
pv->status |= SR_F;
pv->pending_ints |= 0x20;
if (pv->reg[1] & 0x20) {
if (Pico.t.m68c_cnt - Pico.t.m68c_aim < 60) // CPU blocked?
SekExecM68k(11); // HACK
@ -208,15 +214,10 @@ static int PicoFrameHints(void)
}
if (Pico.m.z80Run && !Pico.m.z80_reset && (PicoIn.opt&POPT_EN_Z80)) {
PicoSyncZ80(Pico.t.m68c_aim);
elprintf(EL_INTS, "zint");
z80_int();
}
#ifdef PICO_32X
p32x_start_blank();
#endif
// Run scanline:
CPUS_RUN(CYCLES_M68K_LINE - CYCLES_M68K_VINT_LAG);
do_timing_hacks_end(pv);