1 #include "../pico_int.h"
2 #include "../sound/ym2612.h"
4 struct Pico32x Pico32x;
6 static void sh2_irq_cb(int id, int level)
9 elprintf(EL_32X, "%csh2 ack %d @ %08x", id ? 's' : 'm', level, sh2_pc(id));
12 void p32x_update_irls(void)
14 int irqs, mlvl = 0, slvl = 0;
17 irqs = (Pico32x.sh2irqs | Pico32x.sh2irqi[0]) & ((Pico32x.sh2irq_mask[0] << 3) | P32XI_VRES);
23 irqs = (Pico32x.sh2irqs | Pico32x.sh2irqi[1]) & ((Pico32x.sh2irq_mask[1] << 3) | P32XI_VRES);
28 elprintf(EL_32X, "update_irls: m %d, s %d", mlvl, slvl);
29 sh2_irl_irq(&msh2, mlvl);
32 sh2_irl_irq(&ssh2, slvl);
35 void Pico32xStartup(void)
37 elprintf(EL_STATUS|EL_32X, "32X startup");
43 msh2.irq_callback = sh2_irq_cb;
47 ssh2.irq_callback = sh2_irq_cb;
51 Pico32x.vdp_regs[0] |= P32XV_nPAL;
56 void Pico32xInit(void)
60 void PicoPower32x(void)
62 memset(&Pico32x, 0, sizeof(Pico32x));
64 Pico32x.regs[0] = 0x0082; // SH2 reset?
65 Pico32x.vdp_regs[0x0a/2] = P32XV_VBLK|P32XV_HBLK|P32XV_PEN;
68 void PicoUnload32x(void)
70 if (Pico32xMem != NULL)
77 void PicoReset32x(void)
79 extern int p32x_csum_faked;
80 p32x_csum_faked = 0; // tmp
83 static void p32x_start_blank(void)
86 Pico32x.vdp_regs[0x0a/2] |= P32XV_VBLK|P32XV_PEN;
88 // FB swap waits until vblank
89 if ((Pico32x.vdp_regs[0x0a/2] ^ Pico32x.pending_fb) & P32XV_FS) {
90 Pico32x.vdp_regs[0x0a/2] &= ~P32XV_FS;
91 Pico32x.vdp_regs[0x0a/2] |= Pico32x.pending_fb;
92 Pico32xSwapDRAM(Pico32x.pending_fb ^ 1);
99 static __inline void SekRunM68k(int cyc)
103 if (Pico32x.emu_flags & P32XF_68KPOLL) {
104 SekCycleCnt = SekCycleAim;
107 if ((cyc_do = SekCycleAim - SekCycleCnt) <= 0)
109 #if defined(EMU_CORE_DEBUG)
110 // this means we do run-compare
111 SekCycleCnt+=CM_compareRun(cyc_do, 0);
112 #elif defined(EMU_C68K)
113 PicoCpuCM68k.cycles=cyc_do;
114 CycloneRun(&PicoCpuCM68k);
115 SekCycleCnt+=cyc_do-PicoCpuCM68k.cycles;
116 #elif defined(EMU_M68K)
117 SekCycleCnt+=m68k_execute(cyc_do);
118 #elif defined(EMU_F68K)
119 SekCycleCnt+=fm68k_emulate(cyc_do+1, 0, 0);
123 // ~1463.8, but due to cache misses and slow mem
124 // it's much lower than that
125 #define SH2_LINE_CYCLES 700
129 if (!(Pico32x.emu_flags & (P32XF_MSH2POLL|P32XF_MSH2VPOLL))) \
130 sh2_execute(&msh2, SH2_LINE_CYCLES); \
131 if (!(Pico32x.emu_flags & (P32XF_SSH2POLL|P32XF_SSH2VPOLL))) \
132 sh2_execute(&ssh2, SH2_LINE_CYCLES);
134 #include "../pico_cmn.c"
136 void PicoFrame32x(void)
138 pwm_frame_smp_cnt = 0;
140 Pico32x.vdp_regs[0x0a/2] &= ~P32XV_VBLK; // get out of vblank
141 if ((Pico32x.vdp_regs[0] & P32XV_Mx) != 0) // no forced blanking
142 Pico32x.vdp_regs[0x0a/2] &= ~P32XV_PEN; // no palette access