X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2F32x%2Fmemory.c;h=d9f18db5636462ef8999348d124077c838ce1c58;hb=48c9e01be8ad93a7902e22f9ad07aba4527e6572;hp=2f3499ce740787d62d6ae34b335ecb93102aea18;hpb=c6b118c0ad6b51e36855601de0913437833ba63b;p=picodrive.git diff --git a/pico/32x/memory.c b/pico/32x/memory.c index 2f3499c..d9f18db 100644 --- a/pico/32x/memory.c +++ b/pico/32x/memory.c @@ -191,12 +191,10 @@ static u32 p32x_reg_read16(u32 a) int comreg = 1 << (a & 0x0f) / 2; if (cycles - msh2.m68krcycles_done > 244 - || (Pico32x.comm_dirty_68k & comreg)) + || (Pico32x.comm_dirty & comreg)) p32x_sync_sh2s(cycles); - if (Pico32x.comm_dirty_sh2 & comreg) - Pico32x.comm_dirty_sh2 &= ~comreg; - else if (m68k_poll_detect(a, cycles, P32XF_68KCPOLL)) { + if (m68k_poll_detect(a, cycles, P32XF_68KCPOLL)) { SekSetStop(1); SekEndRun(16); } @@ -388,14 +386,13 @@ static void p32x_reg_write8(u32 a, u32 d) if (REG8IN16(r, a) == d) return; - comreg = 1 << (a & 0x0f) / 2; - if (Pico32x.comm_dirty_68k & comreg) - p32x_sync_sh2s(cycles); + p32x_sync_sh2s(cycles); REG8IN16(r, a) = d; p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles); p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles); - Pico32x.comm_dirty_68k |= comreg; + comreg = 1 << (a & 0x0f) / 2; + Pico32x.comm_dirty |= comreg; if (cycles - (int)msh2.m68krcycles_done > 120) p32x_sync_sh2s(cycles); @@ -451,20 +448,13 @@ static void p32x_reg_write16(u32 a, u32 d) int cycles = SekCyclesDone(); int comreg; - if (r[a / 2] == d) - return; - - comreg = 1 << (a & 0x0f) / 2; - if (Pico32x.comm_dirty_68k & comreg) - p32x_sync_sh2s(cycles); + p32x_sync_sh2s(cycles); r[a / 2] = d; p32x_sh2_poll_event(&sh2s[0], SH2_STATE_CPOLL, cycles); p32x_sh2_poll_event(&sh2s[1], SH2_STATE_CPOLL, cycles); - Pico32x.comm_dirty_68k |= comreg; - - if (cycles - (int)msh2.m68krcycles_done > 120) - p32x_sync_sh2s(cycles); + comreg = 1 << (a & 0x0f) / 2; + Pico32x.comm_dirty |= comreg; return; } // PWM @@ -601,11 +591,7 @@ static u32 p32x_sh2reg_read16(u32 a, SH2 *sh2) // comm port if ((a & 0x30) == 0x20) { - int comreg = 1 << (a & 0x0f) / 2; - if (Pico32x.comm_dirty_68k & comreg) - Pico32x.comm_dirty_68k &= ~comreg; - else - sh2_poll_detect(sh2, a, SH2_STATE_CPOLL, 3); + sh2_poll_detect(sh2, a, SH2_STATE_CPOLL, 3); sh2s_sync_on_read(sh2); return r[a / 2]; } @@ -708,7 +694,7 @@ static void p32x_sh2reg_write8(u32 a, u32 d, SH2 *sh2) p32x_sh2_poll_event(sh2->other_sh2, SH2_STATE_CPOLL, sh2_cycles_done_m68k(sh2)); comreg = 1 << (a & 0x0f) / 2; - Pico32x.comm_dirty_sh2 |= comreg; + Pico32x.comm_dirty |= comreg; return; } @@ -733,7 +719,7 @@ static void p32x_sh2reg_write16(u32 a, u32 d, SH2 *sh2) p32x_sh2_poll_event(sh2->other_sh2, SH2_STATE_CPOLL, sh2_cycles_done_m68k(sh2)); comreg = 1 << (a & 0x0f) / 2; - Pico32x.comm_dirty_sh2 |= comreg; + Pico32x.comm_dirty |= comreg; return; } // PWM @@ -787,7 +773,7 @@ static u32 PicoRead8_32x_on(u32 a) } if ((a & 0xfc00) != 0x5000) { - if (PicoAHW & PAHW_MCD) + if (PicoIn.AHW & PAHW_MCD) return PicoRead8_mcd_io(a); else return PicoRead8_io(a); @@ -831,7 +817,7 @@ static u32 PicoRead16_32x_on(u32 a) } if ((a & 0xfc00) != 0x5000) { - if (PicoAHW & PAHW_MCD) + if (PicoIn.AHW & PAHW_MCD) return PicoRead16_mcd_io(a); else return PicoRead16_io(a); @@ -871,7 +857,7 @@ static void PicoWrite8_32x_on(u32 a, u32 d) } if ((a & 0xfc00) != 0x5000) { - if (PicoAHW & PAHW_MCD) + if (PicoIn.AHW & PAHW_MCD) PicoWrite8_mcd_io(a, d); else PicoWrite8_io(a, d); @@ -909,7 +895,7 @@ static void PicoWrite16_32x_on(u32 a, u32 d) } if ((a & 0xfc00) != 0x5000) { - if (PicoAHW & PAHW_MCD) + if (PicoIn.AHW & PAHW_MCD) PicoWrite16_mcd_io(a, d); else PicoWrite16_io(a, d); @@ -938,15 +924,18 @@ static void PicoWrite16_32x_on(u32 a, u32 d) u32 PicoRead8_32x(u32 a) { u32 d = 0; - if ((a & 0xffc0) == 0x5100) { // a15100 - // regs are always readable - d = ((u8 *)Pico32x.regs)[(a & 0x3f) ^ 1]; - goto out; - } - if ((a & 0xfffc) == 0x30ec) { // a130ec - d = str_mars[a & 3]; - goto out; + if (PicoIn.opt & POPT_EN_32X) { + if ((a & 0xffc0) == 0x5100) { // a15100 + // regs are always readable + d = ((u8 *)Pico32x.regs)[(a & 0x3f) ^ 1]; + goto out; + } + + if ((a & 0xfffc) == 0x30ec) { // a130ec + d = str_mars[a & 3]; + goto out; + } } elprintf(EL_UIO, "m68k unmapped r8 [%06x] @%06x", a, SekPc); @@ -960,14 +949,17 @@ out: u32 PicoRead16_32x(u32 a) { u32 d = 0; - if ((a & 0xffc0) == 0x5100) { // a15100 - d = Pico32x.regs[(a & 0x3f) / 2]; - goto out; - } - if ((a & 0xfffc) == 0x30ec) { // a130ec - d = !(a & 2) ? ('M'<<8)|'A' : ('R'<<8)|'S'; - goto out; + if (PicoIn.opt & POPT_EN_32X) { + if ((a & 0xffc0) == 0x5100) { // a15100 + d = Pico32x.regs[(a & 0x3f) / 2]; + goto out; + } + + if ((a & 0xfffc) == 0x30ec) { // a130ec + d = !(a & 2) ? ('M'<<8)|'A' : ('R'<<8)|'S'; + goto out; + } } elprintf(EL_UIO, "m68k unmapped r16 [%06x] @%06x", a, SekPc); @@ -980,7 +972,8 @@ out: void PicoWrite8_32x(u32 a, u32 d) { - if ((a & 0xffc0) == 0x5100) { // a15100 + if ((PicoIn.opt & POPT_EN_32X) && (a & 0xffc0) == 0x5100) // a15100 + { u16 *r = Pico32x.regs; elprintf(EL_32X, "m68k 32x w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); @@ -1008,7 +1001,8 @@ void PicoWrite8_32x(u32 a, u32 d) void PicoWrite16_32x(u32 a, u32 d) { - if ((a & 0xffc0) == 0x5100) { // a15100 + if ((PicoIn.opt & POPT_EN_32X) && (a & 0xffc0) == 0x5100) // a15100 + { u16 *r = Pico32x.regs; elprintf(EL_UIO, "m68k 32x w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); @@ -1159,7 +1153,7 @@ static void bank_switch(int b) return; bank = b << 20; - if ((Pico.m.sram_reg & SRR_MAPPED) && bank == SRam.start) { + if ((Pico.m.sram_reg & SRR_MAPPED) && bank == Pico.sv.start) { bank_map_handler(); return; } @@ -1650,23 +1644,37 @@ static void get_bios(void) Byteswap(Pico32xMem->m68k_rom, p32x_bios_g, sizeof(Pico32xMem->m68k_rom)); } else { + static const u16 andb[] = { 0x0239, 0x00fe, 0x00a1, 0x5107 }; + static const u16 p_d4[] = { + 0x48e7, 0x8040, // movem.l d0/a1, -(sp) + 0x227c, 0x00a1, 0x30f1, // movea.l #0xa130f1, a1 + 0x7007, // moveq.l #7, d0 + 0x12d8, //0: move.b (a0)+, (a1)+ + 0x5289, // addq.l #1, a1 + 0x51c8, 0xfffa, // dbra d0, 0b + 0x0239, 0x00fe, 0x00a1, // and.b #0xfe, (0xa15107).l + 0x5107, + 0x4cdf, 0x0201 // movem.l (sp)+, d0/a1 + }; + // generate 68k ROM ps = (u16 *)Pico32xMem->m68k_rom; pl = (u32 *)ps; for (i = 1; i < 0xc0/4; i++) pl[i] = HWSWAP(0x880200 + (i - 1) * 6); + pl[0x70/4] = 0; // fill with nops for (i = 0xc0/2; i < 0x100/2; i++) ps[i] = 0x4e71; -#if 0 - ps[0xc0/2] = 0x46fc; - ps[0xc2/2] = 0x2700; // move #0x2700,sr - ps[0xfe/2] = 0x60fe; // jump to self -#else + // c0: don't need to care about RV - not emulated + ps[0xc8/2] = 0x1280; // move.b d0, (a1) + memcpy(ps + 0xca/2, andb, sizeof(andb)); // and.b #0xfe, (a15107) + ps[0xd2/2] = 0x4e75; // rts + // d4: + memcpy(ps + 0xd4/2, p_d4, sizeof(p_d4)); ps[0xfe/2] = 0x4e75; // rts -#endif } // fill remaining m68k_rom page with game ROM memcpy(Pico32xMem->m68k_rom_bank + sizeof(Pico32xMem->m68k_rom), @@ -1778,9 +1786,9 @@ void PicoMemSetup32x(void) cpu68k_map_set(m68k_write16_map, 0x880000, 0x880000 + rs - 1, PicoWrite16_cart, 1); #ifdef EMU_F68K // setup FAME fetchmap - PicoCpuFM68k.Fetch[0] = (unsigned long)Pico32xMem->m68k_rom; + PicoCpuFM68k.Fetch[0] = (uptr)Pico32xMem->m68k_rom; for (rs = 0x88; rs < 0x90; rs++) - PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom - 0x880000; + PicoCpuFM68k.Fetch[rs] = (uptr)Pico.rom - 0x880000; #endif // 32X ROM (banked)