X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=pico%2F32x%2Fmemory.c;h=ef9e3b7076626d7e0d4b0292d42a46384acd44e5;hb=8b9dbcde387f567a154e15ca14a0c6e5b3efa3ef;hp=0e19d69188e367c4760f21741be6a81f63d738a8;hpb=4a1fb1832381958386c1dc91a8a5422af386441d;p=picodrive.git diff --git a/pico/32x/memory.c b/pico/32x/memory.c index 0e19d69..ef9e3b7 100644 --- a/pico/32x/memory.c +++ b/pico/32x/memory.c @@ -9,17 +9,17 @@ * a15100 F....... R.....EA F.....AC N...VHMP 4000 // Fm Ren nrEs Aden Cart heN V H cMd Pwm * a15102 ........ ......SM ? 4002 // intS intM * a15104 ........ ......10 ........ hhhhhhhh 4004 // bk1 bk0 Hint - * a15106 F....... .....SDR UE...... .....SDR 4006 // Full 68S Dma Rv fUll[fb] Empt[fb] + * a15106 ........ F....SDR UE...... .....SDR 4006 // Full 68S Dma Rv fUll[fb] Empt[fb] * a15108 (32bit DREQ src) 4008 * a1510c (32bit DREQ dst) 400c * a15110 llllllll llllll00 4010 // DREQ Len * a15112 (16bit FIFO reg) 4012 - * a15114 ? (16bit VRES clr) 4014 - * a15116 ? (16bit Vint clr) 4016 - * a15118 ? (16bit Hint clr) 4018 - * a1511a ........ .......C (16bit CMD clr) 401a // Cm - * a1511c ? (16bit PWM clr) 401c - * a1511e ? ? 401e + * a15114 0 (16bit VRES clr) 4014 + * a15116 0 (16bit Vint clr) 4016 + * a15118 0 (16bit Hint clr) 4018 + * a1511a .......? .......C (16bit CMD clr) 401a // TV Cm + * a1511c 0 (16bit PWM clr) 401c + * a1511e 0 ? 401e * a15120 (16 bytes comm) 2020 * a15130 (PWM) 2030 * @@ -32,7 +32,7 @@ * sys reg 0004000-00040ff 1 1 * vdp reg 0004100-00041ff 5 5 * vdp pal 0004200-00043ff 5 5 - * rom 2000000-23fffff 6-15 + * cart 2000000-23fffff 6-15 * dram/fb 4000000-401ffff 5-12 1-3 * fb ovr 4020000-403ffff * sdram 6000000-603ffff 12 2 (cycles) @@ -47,7 +47,10 @@ static const char str_mars[] = "MARS"; void *p32x_bios_g, *p32x_bios_m, *p32x_bios_s; struct Pico32xMem *Pico32xMem; -static void bank_switch(int b); +static void bank_switch_rom_68k(int b); + +// addressing byte in 16bit reg +#define REG8IN16(ptr, offs) ((u8 *)ptr)[(offs) ^ 1] // poll detection #define POLL_THRESHOLD 3 @@ -62,7 +65,7 @@ static int m68k_poll_detect(u32 a, u32 cycles, u32 flags) int ret = 0; if (a - 2 <= m68k_poll.addr && m68k_poll.addr <= a + 2 - && cycles - m68k_poll.cycles <= 64) + && cycles - m68k_poll.cycles <= 64 && !SekNotPolling) { if (m68k_poll.cnt++ > POLL_THRESHOLD) { if (!(Pico32x.emu_flags & flags)) { @@ -76,6 +79,7 @@ static int m68k_poll_detect(u32 a, u32 cycles, u32 flags) else { m68k_poll.cnt = 0; m68k_poll.addr = a; + SekNotPolling = 0; } m68k_poll.cycles = cycles; @@ -100,7 +104,7 @@ static void sh2_poll_detect(SH2 *sh2, u32 a, u32 flags, int maxcnt) if (a == sh2->poll_addr && sh2->poll_cycles - cycles_left <= 10) { if (sh2->poll_cnt++ > maxcnt) { if (!(sh2->state & flags)) - elprintf(EL_32X, "%csh2 state: %02x->%02x", sh2->is_slave?'s':'m', + elprintf_sh2(sh2, EL_32X, "state: %02x->%02x", sh2->state, sh2->state | flags); sh2->state |= flags; @@ -118,8 +122,8 @@ static void sh2_poll_detect(SH2 *sh2, u32 a, u32 flags, int maxcnt) void p32x_sh2_poll_event(SH2 *sh2, u32 flags, u32 m68k_cycles) { if (sh2->state & flags) { - elprintf(EL_32X, "%csh2 state: %02x->%02x", sh2->is_slave?'s':'m', - sh2->state, sh2->state & ~flags); + elprintf_sh2(sh2, EL_32X, "state: %02x->%02x", sh2->state, + sh2->state & ~flags); if (sh2->m68krcycles_done < m68k_cycles) sh2->m68krcycles_done = m68k_cycles; @@ -183,42 +187,61 @@ static u32 p32x_reg_read16(u32 a) return sh2_comm_faker(a); #else if ((a & 0x30) == 0x20) { - static u32 dr2 = 0; - unsigned int cycles = SekCyclesDoneT(); + unsigned int cycles = SekCyclesDone(); int comreg = 1 << (a & 0x0f) / 2; - // evil X-Men proto polls in a dbra loop and expects it to expire.. - if (SekDar(2) != dr2) - m68k_poll.cnt = 0; - dr2 = SekDar(2); - - if (cycles - msh2.m68krcycles_done > 500) + if (cycles - msh2.m68krcycles_done > 244 + || (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); } - dr2 = SekDar(2); goto out; } #endif if (a == 2) { // INTM, INTS - unsigned int cycles = SekCyclesDoneT(); + unsigned int cycles = SekCyclesDone(); if (cycles - msh2.m68krcycles_done > 64) p32x_sync_sh2s(cycles); - return ((Pico32x.sh2irqi[0] & P32XI_CMD) >> 4) | ((Pico32x.sh2irqi[1] & P32XI_CMD) >> 3); + goto out; } if ((a & 0x30) == 0x30) - return p32x_pwm_read16(a, NULL, SekCyclesDoneT()); + return p32x_pwm_read16(a, NULL, SekCyclesDone()); out: return Pico32x.regs[a / 2]; } +static void dreq0_write(u16 *r, u32 d) +{ + if (!(r[6 / 2] & P32XS_68S)) { + elprintf(EL_32X|EL_ANOMALY, "DREQ FIFO w16 without 68S?"); + return; // ignored - tested + } + if (Pico32x.dmac0_fifo_ptr < DMAC_FIFO_LEN) { + Pico32x.dmac_fifo[Pico32x.dmac0_fifo_ptr++] = d; + if (Pico32x.dmac0_fifo_ptr == DMAC_FIFO_LEN) + r[6 / 2] |= P32XS_FULL; + // tested: len register decrements and 68S clears + // even if SH2s/DMAC aren't active.. + r[0x10 / 2]--; + if (r[0x10 / 2] == 0) + r[6 / 2] &= ~P32XS_68S; + + if ((Pico32x.dmac0_fifo_ptr & 3) == 0) { + p32x_sync_sh2s(SekCyclesDone()); + p32x_dreq0_trigger(); + } + } + else + elprintf(EL_32X|EL_ANOMALY, "DREQ FIFO overflow!"); +} + +// writable bits tested static void p32x_reg_write8(u32 a, u32 d) { u16 *r = Pico32x.regs; @@ -228,63 +251,148 @@ static void p32x_reg_write8(u32 a, u32 d) m68k_poll.cnt = 0; switch (a) { - case 0: // adapter ctl - r[0] = (r[0] & ~P32XS_FM) | ((d << 8) & P32XS_FM); + case 0x00: // adapter ctl: FM writable + REG8IN16(r, 0x00) = d & 0x80; return; - case 1: // adapter ctl, RES bit writeable + case 0x01: // adapter ctl: RES and ADEN writable if ((d ^ r[0]) & d & P32XS_nRES) p32x_reset_sh2s(); - r[0] = (r[0] & ~P32XS_nRES) | (d & P32XS_nRES); + REG8IN16(r, 0x01) &= ~(P32XS_nRES|P32XS_ADEN); + REG8IN16(r, 0x01) |= d & (P32XS_nRES|P32XS_ADEN); return; - case 3: // irq ctl - if ((d & 1) != !!(Pico32x.sh2irqi[0] & P32XI_CMD)) { - p32x_sync_sh2s(SekCyclesDoneT()); - if (d & 1) - Pico32x.sh2irqi[0] |= P32XI_CMD; - else - Pico32x.sh2irqi[0] &= ~P32XI_CMD; - p32x_update_irls(NULL, SekCyclesDoneT2()); + case 0x02: // ignored, always 0 + return; + case 0x03: // irq ctl + if ((d ^ r[0x02 / 2]) & 3) { + int cycles = SekCyclesDone(); + p32x_sync_sh2s(cycles); + r[0x02 / 2] = d & 3; + p32x_update_cmd_irq(NULL, cycles); } - if (!!(d & 2) != !!(Pico32x.sh2irqi[1] & P32XI_CMD)) { - p32x_sync_sh2s(SekCyclesDoneT()); - if (d & 2) - Pico32x.sh2irqi[1] |= P32XI_CMD; - else - Pico32x.sh2irqi[1] &= ~P32XI_CMD; - p32x_update_irls(NULL, SekCyclesDoneT2()); + return; + case 0x04: // ignored, always 0 + return; + case 0x05: // bank + d &= 3; + if (r[0x04 / 2] != d) { + r[0x04 / 2] = d; + bank_switch_rom_68k(d); } return; - case 5: // bank - d &= 7; - if (r[4 / 2] != d) { - r[4 / 2] = d; - bank_switch(d); + case 0x06: // ignored, always 0 + return; + case 0x07: // DREQ ctl + REG8IN16(r, 0x07) &= ~(P32XS_68S|P32XS_DMA|P32XS_RV); + if (!(d & P32XS_68S)) { + Pico32x.dmac0_fifo_ptr = 0; + REG8IN16(r, 0x07) &= ~P32XS_FULL; } + REG8IN16(r, 0x07) |= d & (P32XS_68S|P32XS_DMA|P32XS_RV); + return; + case 0x08: // ignored, always 0 + return; + case 0x09: // DREQ src + REG8IN16(r, 0x09) = d; + return; + case 0x0a: + REG8IN16(r, 0x0a) = d; + return; + case 0x0b: + REG8IN16(r, 0x0b) = d & 0xfe; + return; + case 0x0c: // ignored, always 0 + return; + case 0x0d: // DREQ dest + case 0x0e: + case 0x0f: + case 0x10: // DREQ len + REG8IN16(r, a) = d; + return; + case 0x11: + REG8IN16(r, a) = d & 0xfc; + return; + // DREQ FIFO - writes to odd addr go to fifo + // do writes to even work? Reads return 0 + case 0x12: + REG8IN16(r, a) = d; + return; + case 0x13: + d = (REG8IN16(r, 0x12) << 8) | (d & 0xff); + REG8IN16(r, 0x12) = 0; + dreq0_write(r, d); + return; + case 0x14: // ignored, always 0 + case 0x15: + case 0x16: + case 0x17: + case 0x18: + case 0x19: return; - case 7: // DREQ ctl - r[6 / 2] = (r[6 / 2] & P32XS_FULL) | (d & (P32XS_68S|P32XS_DMA|P32XS_RV)); + case 0x1a: // what's this? + elprintf(EL_32X|EL_ANOMALY, "mystery w8 %02x %02x", a, d); + REG8IN16(r, a) = d & 0x01; return; case 0x1b: // TV - r[0x1a / 2] = d; + REG8IN16(r, a) = d & 0x01; + return; + case 0x1c: // ignored, always 0 + case 0x1d: + case 0x1e: + case 0x1f: + case 0x30: + return; + case 0x31: // PWM control + REG8IN16(r, a) &= ~0x0f; + REG8IN16(r, a) |= d & 0x0f; + d = r[0x30 / 2]; + goto pwm_write; + case 0x32: // PWM cycle + REG8IN16(r, a) = d & 0x0f; + d = r[0x32 / 2]; + goto pwm_write; + case 0x33: + REG8IN16(r, a) = d; + d = r[0x32 / 2]; + goto pwm_write; + // PWM pulse regs.. Only writes to odd address send a value + // to FIFO; reads are 0 (except status bits) + case 0x34: + case 0x36: + case 0x38: + REG8IN16(r, a) = d; + return; + case 0x35: + case 0x37: + case 0x39: + d = (REG8IN16(r, a ^ 1) << 8) | (d & 0xff); + REG8IN16(r, a ^ 1) = 0; + goto pwm_write; + case 0x3a: // ignored, always 0 + case 0x3b: + case 0x3c: + case 0x3d: + case 0x3e: + case 0x3f: + return; + pwm_write: + p32x_pwm_write16(a & ~1, d, NULL, SekCyclesDone()); return; } if ((a & 0x30) == 0x20) { - u8 *r8 = (u8 *)r; - int cycles = SekCyclesDoneT(); + int cycles = SekCyclesDone(); int comreg; - if (r8[a ^ 1] == 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); - r8[a ^ 1] = d; + 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); @@ -304,57 +412,54 @@ static void p32x_reg_write16(u32 a, u32 d) case 0x00: // adapter ctl if ((d ^ r[0]) & d & P32XS_nRES) p32x_reset_sh2s(); - r[0] = (r[0] & ~(P32XS_FM|P32XS_nRES)) | (d & (P32XS_FM|P32XS_nRES)); + r[0] &= ~(P32XS_FM|P32XS_nRES|P32XS_ADEN); + r[0] |= d & (P32XS_FM|P32XS_nRES|P32XS_ADEN); + return; + case 0x08: // DREQ src + r[a / 2] = d & 0xff; + return; + case 0x0a: + r[a / 2] = d & ~1; + return; + case 0x0c: // DREQ dest + r[a / 2] = d & 0xff; + return; + case 0x0e: + r[a / 2] = d; return; case 0x10: // DREQ len r[a / 2] = d & ~3; return; case 0x12: // FIFO reg - if (!(r[6 / 2] & P32XS_68S)) { - elprintf(EL_32X|EL_ANOMALY, "DREQ FIFO w16 without 68S?"); - return; - } - if (Pico32x.dmac0_fifo_ptr < DMAC_FIFO_LEN) { - Pico32x.dmac_fifo[Pico32x.dmac0_fifo_ptr++] = d; - if ((Pico32x.dmac0_fifo_ptr & 3) == 0) - p32x_dreq0_trigger(); - if (Pico32x.dmac0_fifo_ptr == DMAC_FIFO_LEN) - r[6 / 2] |= P32XS_FULL; - } - else - elprintf(EL_32X|EL_ANOMALY, "DREQ FIFO overflow!"); - break; + dreq0_write(r, d); + return; + case 0x1a: // TV + mystery bit + r[a / 2] = d & 0x0101; + return; + case 0x30: // PWM control + d = (r[a / 2] & ~0x0f) | (d & 0x0f); + r[a / 2] = d; + p32x_pwm_write16(a, d, NULL, SekCyclesDone()); + return; } - // DREQ src, dst - if ((a & 0x38) == 0x08) { - r[a / 2] = d; - return; - } // comm port - else if ((a & 0x30) == 0x20) { - int cycles = SekCyclesDoneT(); + if ((a & 0x30) == 0x20) { + 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 else if ((a & 0x30) == 0x30) { - p32x_pwm_write16(a, d, NULL, SekCyclesDoneT()); + p32x_pwm_write16(a, d, NULL, SekCyclesDone()); return; } @@ -450,7 +555,7 @@ static void p32x_vdp_write16(u32 a, u32 d, SH2 *sh2) static u32 p32x_sh2reg_read16(u32 a, SH2 *sh2) { u16 *r = Pico32x.regs; - a &= 0xfe; // ? + a &= 0x3e; switch (a) { case 0x00: // adapter/irq ctl @@ -460,52 +565,76 @@ static u32 p32x_sh2reg_read16(u32 a, SH2 *sh2) sh2_poll_detect(sh2, a, SH2_STATE_CPOLL, 3); sh2s_sync_on_read(sh2); return Pico32x.sh2_regs[4 / 2]; + case 0x06: + return (r[a / 2] & ~P32XS_FULL) | 0x4000; + case 0x08: // DREQ src + case 0x0a: + case 0x0c: // DREQ dst + case 0x0e: case 0x10: // DREQ len return r[a / 2]; + case 0x12: // DREQ FIFO - does this work on hw? + if (Pico32x.dmac0_fifo_ptr > 0) { + Pico32x.dmac0_fifo_ptr--; + r[a / 2] = Pico32x.dmac_fifo[0]; + memmove(&Pico32x.dmac_fifo[0], &Pico32x.dmac_fifo[1], + Pico32x.dmac0_fifo_ptr * 2); + } + return r[a / 2]; + case 0x14: + case 0x16: + case 0x18: + case 0x1a: + case 0x1c: + return 0; // ? } - // DREQ src, dst - if ((a & 0x38) == 0x08) - return r[a / 2]; // 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]; } - if ((a & 0x30) == 0x30) { + if ((a & 0x30) == 0x30) return p32x_pwm_read16(a, sh2, sh2_cycles_done_m68k(sh2)); - } + elprintf_sh2(sh2, EL_32X|EL_ANOMALY, + "unhandled sysreg r16 [%02x] @%08x", a, sh2_pc(sh2)); return 0; } static void p32x_sh2reg_write8(u32 a, u32 d, SH2 *sh2) { - a &= 0xff; + u16 *r = Pico32x.regs; + u32 old; + a &= 0x3f; sh2->poll_addr = 0; switch (a) { - case 0: // FM - Pico32x.regs[0] &= ~P32XS_FM; - Pico32x.regs[0] |= (d << 8) & P32XS_FM; + case 0x00: // FM + r[0] &= ~P32XS_FM; + r[0] |= (d << 8) & P32XS_FM; return; - case 1: // HEN/irq masks - if ((d ^ Pico32x.sh2_regs[0]) & 0x80) - elprintf(EL_ANOMALY|EL_32X, "HEN"); - Pico32x.sh2irq_mask[sh2->is_slave] = d & 0x8f; + case 0x01: // HEN/irq masks + old = Pico32x.sh2irq_mask[sh2->is_slave]; + if ((d ^ old) & 1) + p32x_pwm_sync_to_sh2(sh2); + + Pico32x.sh2irq_mask[sh2->is_slave] = d & 0x0f; Pico32x.sh2_regs[0] &= ~0x80; Pico32x.sh2_regs[0] |= d & 0x80; - if (d & 1) + + if ((d ^ old) & 1) p32x_pwm_schedule_sh2(sh2); - p32x_update_irls(sh2, 0); + if ((old ^ d) & 2) + p32x_update_cmd_irq(sh2, 0); + if ((old ^ d) & 4) + p32x_schedule_hint(sh2, 0); + return; + case 0x04: // ignored? return; - case 5: // H count + case 0x05: // H count d &= 0xff; if (Pico32x.sh2_regs[4 / 2] != d) { Pico32x.sh2_regs[4 / 2] = d; @@ -514,27 +643,68 @@ static void p32x_sh2reg_write8(u32 a, u32 d, SH2 *sh2) sh2_end_run(sh2, 4); } return; + case 0x30: + REG8IN16(r, a) = d & 0x0f; + d = r[0x30 / 2]; + goto pwm_write; + case 0x31: // PWM control + REG8IN16(r, a) = d & 0x8f; + d = r[0x30 / 2]; + goto pwm_write; + case 0x32: // PWM cycle + REG8IN16(r, a) = d & 0x0f; + d = r[0x32 / 2]; + goto pwm_write; + case 0x33: + REG8IN16(r, a) = d; + d = r[0x32 / 2]; + goto pwm_write; + // PWM pulse regs.. Only writes to odd address send a value + // to FIFO; reads are 0 (except status bits) + case 0x34: + case 0x36: + case 0x38: + REG8IN16(r, a) = d; + return; + case 0x35: + case 0x37: + case 0x39: + d = (REG8IN16(r, a ^ 1) << 8) | (d & 0xff); + REG8IN16(r, a ^ 1) = 0; + goto pwm_write; + case 0x3a: // ignored, always 0? + case 0x3b: + case 0x3c: + case 0x3d: + case 0x3e: + case 0x3f: + return; + pwm_write: + p32x_pwm_write16(a & ~1, d, sh2, 0); + return; } if ((a & 0x30) == 0x20) { - u8 *r8 = (u8 *)Pico32x.regs; int comreg; - if (r8[a ^ 1] == d) + if (REG8IN16(r, a) == d) return; - r8[a ^ 1] = d; + REG8IN16(r, a) = d; p32x_m68k_poll_event(P32XF_68KCPOLL); 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; } + + elprintf(EL_32X|EL_ANOMALY, + "unhandled sysreg w8 [%02x] %02x @%08x", a, d, sh2_pc(sh2)); } static void p32x_sh2reg_write16(u32 a, u32 d, SH2 *sh2) { - a &= 0xfe; + a &= 0x3e; sh2->poll_addr = 0; @@ -549,7 +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 @@ -563,12 +733,22 @@ static void p32x_sh2reg_write16(u32 a, u32 d, SH2 *sh2) Pico32x.regs[0] &= ~P32XS_FM; Pico32x.regs[0] |= d & P32XS_FM; break; - case 0x14: Pico32x.sh2irqs &= ~P32XI_VRES; goto irls; - case 0x16: Pico32x.sh2irqs &= ~P32XI_VINT; goto irls; - case 0x18: Pico32x.sh2irqs &= ~P32XI_HINT; goto irls; - case 0x1a: Pico32x.sh2irqi[sh2->is_slave] &= ~P32XI_CMD; goto irls; + case 0x14: + Pico32x.sh2irqs &= ~P32XI_VRES; + goto irls; + case 0x16: + Pico32x.sh2irqi[sh2->is_slave] &= ~P32XI_VINT; + goto irls; + case 0x18: + Pico32x.sh2irqi[sh2->is_slave] &= ~P32XI_HINT; + goto irls; + case 0x1a: + Pico32x.regs[2 / 2] &= ~(1 << sh2->is_slave); + p32x_update_cmd_irq(sh2, 0); + return; case 0x1c: - Pico32x.sh2irqs &= ~P32XI_PWM; + p32x_pwm_sync_to_sh2(sh2); + Pico32x.sh2irqi[sh2->is_slave] &= ~P32XI_PWM; p32x_pwm_schedule_sh2(sh2); goto irls; } @@ -592,8 +772,12 @@ static u32 PicoRead8_32x_on(u32 a) goto out_16to8; } - if ((a & 0xfc00) != 0x5000) - return PicoRead8_io(a); + if ((a & 0xfc00) != 0x5000) { + if (PicoIn.AHW & PAHW_MCD) + return PicoRead8_mcd_io(a); + else + return PicoRead8_io(a); + } if ((a & 0xfff0) == 0x5180) { // a15180 d = p32x_vdp_read16(a); @@ -632,8 +816,12 @@ static u32 PicoRead16_32x_on(u32 a) goto out; } - if ((a & 0xfc00) != 0x5000) - return PicoRead16_io(a); + if ((a & 0xfc00) != 0x5000) { + if (PicoIn.AHW & PAHW_MCD) + return PicoRead16_mcd_io(a); + else + return PicoRead16_io(a); + } if ((a & 0xfff0) == 0x5180) { // a15180 d = p32x_vdp_read16(a); @@ -669,7 +857,12 @@ static void PicoWrite8_32x_on(u32 a, u32 d) } if ((a & 0xfc00) != 0x5000) { - PicoWrite8_io(a, d); + if (PicoIn.AHW & PAHW_MCD) + PicoWrite8_mcd_io(a, d); + else + PicoWrite8_io(a, d); + if (a == 0xa130f1) + bank_switch_rom_68k(Pico32x.regs[4 / 2]); return; } @@ -702,7 +895,12 @@ static void PicoWrite16_32x_on(u32 a, u32 d) } if ((a & 0xfc00) != 0x5000) { - PicoWrite16_io(a, d); + if (PicoIn.AHW & PAHW_MCD) + PicoWrite16_mcd_io(a, d); + else + PicoWrite16_io(a, d); + if (a == 0xa130f0) + bank_switch_rom_68k(Pico32x.regs[4 / 2]); return; } @@ -726,15 +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); @@ -748,14 +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); @@ -768,7 +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); @@ -796,7 +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); @@ -868,7 +1074,8 @@ static void PicoWrite8_hint(u32 a, u32 d) return; } - elprintf(EL_UIO, "m68k unmapped w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); + elprintf(EL_UIO, "m68k unmapped w8 [%06x] %02x @%06x", + a, d & 0xff, SekPc); } static void PicoWrite16_hint(u32 a, u32 d) @@ -878,34 +1085,104 @@ static void PicoWrite16_hint(u32 a, u32 d) return; } - elprintf(EL_UIO, "m68k unmapped w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); + elprintf(EL_UIO, "m68k unmapped w16 [%06x] %04x @%06x", + a, d & 0xffff, SekPc); } -static void bank_switch(int b) +// normally not writable, but somebody could make a RAM cart +static void PicoWrite8_cart(u32 a, u32 d) { - unsigned int rs, bank; + elprintf(EL_UIO, "m68k w8 [%06x] %02x @%06x", a, d & 0xff, SekPc); + + a &= 0xfffff; + m68k_write8(a, d); +} + +static void PicoWrite16_cart(u32 a, u32 d) +{ + elprintf(EL_UIO, "m68k w16 [%06x] %04x @%06x", a, d & 0xffff, SekPc); + + a &= 0xfffff; + m68k_write16(a, d); +} + +// same with bank, but save ram is sometimes here +static u32 PicoRead8_bank(u32 a) +{ + a = (Pico32x.regs[4 / 2] << 20) | (a & 0xfffff); + return m68k_read8(a); +} + +static u32 PicoRead16_bank(u32 a) +{ + a = (Pico32x.regs[4 / 2] << 20) | (a & 0xfffff); + return m68k_read16(a); +} + +static void PicoWrite8_bank(u32 a, u32 d) +{ + if (!(Pico.m.sram_reg & SRR_MAPPED)) + elprintf(EL_UIO, "m68k w8 [%06x] %02x @%06x", + a, d & 0xff, SekPc); + + a = (Pico32x.regs[4 / 2] << 20) | (a & 0xfffff); + m68k_write8(a, d); +} + +static void PicoWrite16_bank(u32 a, u32 d) +{ + if (!(Pico.m.sram_reg & SRR_MAPPED)) + elprintf(EL_UIO, "m68k w16 [%06x] %04x @%06x", + a, d & 0xffff, SekPc); + + a = (Pico32x.regs[4 / 2] << 20) | (a & 0xfffff); + m68k_write16(a, d); +} + +static void bank_map_handler(void) +{ + cpu68k_map_set(m68k_read8_map, 0x900000, 0x9fffff, PicoRead8_bank, 1); + cpu68k_map_set(m68k_read16_map, 0x900000, 0x9fffff, PicoRead16_bank, 1); +} + +static void bank_switch_rom_68k(int b) +{ + unsigned int rs, bank, bank2; + + if (Pico.m.ncart_in) + return; bank = b << 20; + if ((Pico.m.sram_reg & SRR_MAPPED) && bank == Pico.sv.start) { + bank_map_handler(); + return; + } + if (bank >= Pico.romsize) { elprintf(EL_32X|EL_ANOMALY, "missing bank @ %06x", bank); + bank_map_handler(); return; } - // 32X ROM (unbanked, XXX: consider mirroring?) + // 32X ROM (XXX: consider mirroring?) rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; - rs -= bank; - if (rs > 0x100000) - rs = 0x100000; - cpu68k_map_set(m68k_read8_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); - cpu68k_map_set(m68k_read16_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); - - elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); - -#ifdef EMU_F68K - // setup FAME fetchmap - for (rs = 0x90; rs < 0xa0; rs++) - PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom + bank - 0x900000; -#endif + if (!carthw_ssf2_active) { + rs -= bank; + if (rs > 0x100000) + rs = 0x100000; + cpu68k_map_set(m68k_read8_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); + cpu68k_map_set(m68k_read16_map, 0x900000, 0x900000 + rs - 1, Pico.rom + bank, 0); + elprintf(EL_32X, "bank %06x-%06x -> %06x", 0x900000, 0x900000 + rs - 1, bank); + } + else { + bank = bank >> 19; + bank2 = carthw_ssf2_banks[bank + 0] << 19; + cpu68k_map_set(m68k_read8_map, 0x900000, 0x97ffff, Pico.rom + bank2, 0); + cpu68k_map_set(m68k_read16_map, 0x900000, 0x97ffff, Pico.rom + bank2, 0); + bank2 = carthw_ssf2_banks[bank + 1] << 19; + cpu68k_map_set(m68k_read8_map, 0x980000, 0x9fffff, Pico.rom + bank2, 0); + cpu68k_map_set(m68k_read16_map, 0x980000, 0x9fffff, Pico.rom + bank2, 0); + } } // ----------------------------------------------------------------- @@ -915,8 +1192,8 @@ static void bank_switch(int b) // read8 static u32 sh2_read8_unmapped(u32 a, SH2 *sh2) { - elprintf(EL_UIO, "%csh2 unmapped r8 [%08x] %02x @%06x", - sh2->is_slave ? 's' : 'm', a, 0, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "unmapped r8 [%08x] %02x @%06x", + a, 0, sh2_pc(sh2)); return 0; } @@ -924,13 +1201,15 @@ static u32 sh2_read8_cs0(u32 a, SH2 *sh2) { u32 d = 0; - // 0x3ff00 is veridied - if ((a & 0x3ff00) == 0x4000) { + sh2_burn_cycles(sh2, 1*2); + + // 0x3ffc0 is veridied + if ((a & 0x3ffc0) == 0x4000) { d = p32x_sh2reg_read16(a, sh2); goto out_16to8; } - if ((a & 0x3ff00) == 0x4100) { + if ((a & 0x3fff0) == 0x4100) { d = p32x_vdp_read16(a); sh2_poll_detect(sh2, a, SH2_STATE_VPOLL, 7); goto out_16to8; @@ -938,9 +1217,9 @@ static u32 sh2_read8_cs0(u32 a, SH2 *sh2) // TODO: mirroring? if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m)) - return Pico32xMem->sh2_rom_m[a ^ 1]; + return Pico32xMem->sh2_rom_m.b[a ^ 1]; if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s)) - return Pico32xMem->sh2_rom_s[a ^ 1]; + return Pico32xMem->sh2_rom_s.b[a ^ 1]; if ((a & 0x3fe00) == 0x4200) { d = Pico32xMem->pal[(a & 0x1ff) / 2]; @@ -955,8 +1234,8 @@ out_16to8: else d >>= 8; - elprintf(EL_32X, "%csh2 r8 [%08x] %02x @%06x", - sh2->is_slave ? 's' : 'm', a, d, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "r8 [%08x] %02x @%06x", + a, d, sh2_pc(sh2)); return d; } @@ -965,11 +1244,18 @@ static u32 sh2_read8_da(u32 a, SH2 *sh2) return sh2->data_array[(a & 0xfff) ^ 1]; } +// for ssf2 +static u32 sh2_read8_rom(u32 a, SH2 *sh2) +{ + u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19; + return Pico.rom[(bank + (a & 0x7ffff)) ^ 1]; +} + // read16 static u32 sh2_read16_unmapped(u32 a, SH2 *sh2) { - elprintf(EL_UIO, "%csh2 unmapped r16 [%08x] %04x @%06x", - sh2->is_slave ? 's' : 'm', a, 0, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "unmapped r16 [%08x] %04x @%06x", + a, 0, sh2_pc(sh2)); return 0; } @@ -977,23 +1263,25 @@ static u32 sh2_read16_cs0(u32 a, SH2 *sh2) { u32 d = 0; - if ((a & 0x3ff00) == 0x4000) { + sh2_burn_cycles(sh2, 1*2); + + if ((a & 0x3ffc0) == 0x4000) { d = p32x_sh2reg_read16(a, sh2); if (!(EL_LOGMASK & EL_PWM) && (a & 0x30) == 0x30) // hide PWM return d; goto out; } - if ((a & 0x3ff00) == 0x4100) { + if ((a & 0x3fff0) == 0x4100) { d = p32x_vdp_read16(a); sh2_poll_detect(sh2, a, SH2_STATE_VPOLL, 7); goto out; } if (!sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_m)) - return *(u16 *)(Pico32xMem->sh2_rom_m + a); + return Pico32xMem->sh2_rom_m.w[a / 2]; if (sh2->is_slave && a < sizeof(Pico32xMem->sh2_rom_s)) - return *(u16 *)(Pico32xMem->sh2_rom_s + a); + return Pico32xMem->sh2_rom_s.w[a / 2]; if ((a & 0x3fe00) == 0x4200) { d = Pico32xMem->pal[(a & 0x1ff) / 2]; @@ -1003,8 +1291,8 @@ static u32 sh2_read16_cs0(u32 a, SH2 *sh2) return sh2_read16_unmapped(a, sh2); out: - elprintf(EL_32X, "%csh2 r16 [%08x] %04x @%06x", - sh2->is_slave ? 's' : 'm', a, d, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "r16 [%08x] %04x @%06x", + a, d, sh2_pc(sh2)); return d; } @@ -1013,6 +1301,12 @@ static u32 sh2_read16_da(u32 a, SH2 *sh2) return ((u16 *)sh2->data_array)[(a & 0xfff) / 2]; } +static u32 sh2_read16_rom(u32 a, SH2 *sh2) +{ + u32 bank = carthw_ssf2_banks[(a >> 19) & 7] << 19; + return *(u16 *)(Pico.rom + bank + (a & 0x7fffe)); +} + // writes static void REGPARM(3) sh2_write_ignore(u32 a, u32 d, SH2 *sh2) { @@ -1021,24 +1315,24 @@ static void REGPARM(3) sh2_write_ignore(u32 a, u32 d, SH2 *sh2) // write8 static void REGPARM(3) sh2_write8_unmapped(u32 a, u32 d, SH2 *sh2) { - elprintf(EL_UIO, "%csh2 unmapped w8 [%08x] %02x @%06x", - sh2->is_slave ? 's' : 'm', a, d & 0xff, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "unmapped w8 [%08x] %02x @%06x", + a, d & 0xff, sh2_pc(sh2)); } static void REGPARM(3) sh2_write8_cs0(u32 a, u32 d, SH2 *sh2) { - elprintf(EL_32X, "%csh2 w8 [%08x] %02x @%06x", - sh2->is_slave ? 's' : 'm', a, d & 0xff, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "w8 [%08x] %02x @%06x", + a, d & 0xff, sh2_pc(sh2)); if (Pico32x.regs[0] & P32XS_FM) { - if ((a & 0x3ff00) == 0x4100) { + if ((a & 0x3fff0) == 0x4100) { sh2->poll_addr = 0; p32x_vdp_write8(a, d); return; } } - if ((a & 0x3ff00) == 0x4000) { + if ((a & 0x3ffc0) == 0x4000) { p32x_sh2reg_write8(a, d, sh2); return; } @@ -1067,6 +1361,15 @@ static void REGPARM(3) sh2_write8_sdram(u32 a, u32 d, SH2 *sh2) Pico32xMem->sdram[a1 ^ 1] = d; } +static void REGPARM(3) sh2_write8_sdram_wt(u32 a, u32 d, SH2 *sh2) +{ + // xmen sync hack.. + if (a < 0x26000200) + sh2_end_run(sh2, 32); + + sh2_write8_sdram(a, d, sh2); +} + static void REGPARM(3) sh2_write8_da(u32 a, u32 d, SH2 *sh2) { u32 a1 = a & 0xfff; @@ -1082,18 +1385,18 @@ static void REGPARM(3) sh2_write8_da(u32 a, u32 d, SH2 *sh2) // write16 static void REGPARM(3) sh2_write16_unmapped(u32 a, u32 d, SH2 *sh2) { - elprintf(EL_UIO, "%csh2 unmapped w16 [%08x] %04x @%06x", - sh2->is_slave ? 's' : 'm', a, d & 0xffff, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "unmapped w16 [%08x] %04x @%06x", + a, d & 0xffff, sh2_pc(sh2)); } static void REGPARM(3) sh2_write16_cs0(u32 a, u32 d, SH2 *sh2) { if (((EL_LOGMASK & EL_PWM) || (a & 0x30) != 0x30)) // hide PWM - elprintf(EL_32X, "%csh2 w16 [%08x] %04x @%06x", - sh2->is_slave ? 's' : 'm', a, d & 0xffff, sh2_pc(sh2)); + elprintf_sh2(sh2, EL_32X, "w16 [%08x] %04x @%06x", + a, d & 0xffff, sh2_pc(sh2)); if (Pico32x.regs[0] & P32XS_FM) { - if ((a & 0x3ff00) == 0x4100) { + if ((a & 0x3fff0) == 0x4100) { sh2->poll_addr = 0; p32x_vdp_write16(a, d, sh2); return; @@ -1106,7 +1409,7 @@ static void REGPARM(3) sh2_write16_cs0(u32 a, u32 d, SH2 *sh2) } } - if ((a & 0x3ff00) == 0x4000) { + if ((a & 0x3ffc0) == 0x4000) { p32x_sh2reg_write16(a, d, sh2); return; } @@ -1199,7 +1502,7 @@ u32 REGPARM(2) p32x_sh2_read32(u32 a, SH2 *sh2) return (pd[0] << 16) | pd[1]; } - if (offs == 0x1f) + if (offs == SH2MAP_ADDR2OFFS_R(0xffffc000)) return sh2_peripheral_read32(a, sh2); handler = (sh2_read_handler *)(p << 1); @@ -1244,44 +1547,111 @@ void REGPARM(3) p32x_sh2_write32(u32 a, u32 d, SH2 *sh2) // ----------------------------------------------------------------- +static void z80_md_bank_write_32x(unsigned int a, unsigned char d) +{ + unsigned int addr68k; + + addr68k = Pico.m.z80_bank68k << 15; + addr68k += a & 0x7fff; + if ((addr68k & 0xfff000) == 0xa15000) + Pico32x.emu_flags |= P32XF_Z80_32X_IO; + + elprintf(EL_Z80BNK, "z80->68k w8 [%06x] %02x", addr68k, d); + m68k_write8(addr68k, d); +} + +// ----------------------------------------------------------------- + static const u16 msh2_code[] = { // trap instructions - 0xaffe, // bra - 0x0009, // nop + 0xaffe, // 200 bra + 0x0009, // 202 nop // have to wait a bit until m68k initial program finishes clearing stuff // to avoid races with game SH2 code, like in Tempo - 0xd004, // mov.l @(_m_ok,pc), r0 - 0xd105, // mov.l @(_cnt,pc), r1 - 0xd205, // mov.l @(_start,pc), r2 - 0x71ff, // add #-1, r1 - 0x4115, // cmp/pl r1 - 0x89fc, // bt -2 - 0xc208, // mov.l r0, @(h'20,gbr) - 0x6822, // mov.l @r2, r8 - 0x482b, // jmp @r8 - 0x0009, // nop - ('M'<<8)|'_', ('O'<<8)|'K', - 0x0001, 0x0000, - 0x2200, 0x03e0 // master start pointer in ROM + 0xd406, // 204 mov.l @(_m_ok,pc), r4 + 0xc400, // 206 mov.b @(h'0,gbr),r0 + 0xc801, // 208 tst #1, r0 + 0x8b0f, // 20a bf cd_start + 0xd105, // 20c mov.l @(_cnt,pc), r1 + 0xd206, // 20e mov.l @(_start,pc), r2 + 0x71ff, // 210 add #-1, r1 + 0x4115, // 212 cmp/pl r1 + 0x89fc, // 214 bt -2 + 0x6043, // 216 mov r4, r0 + 0xc208, // 218 mov.l r0, @(h'20,gbr) + 0x6822, // 21a mov.l @r2, r8 + 0x482b, // 21c jmp @r8 + 0x0009, // 21e nop + ('M'<<8)|'_', ('O'<<8)|'K', // 220 _m_ok + 0x0001, 0x0000, // 224 _cnt + 0x2200, 0x03e0, // master start pointer in ROM + // cd_start: + 0xd20d, // 22c mov.l @(__cd_,pc), r2 + 0xc608, // 22e mov.l @(h'20,gbr), r0 + 0x3200, // 230 cmp/eq r0, r2 + 0x8bfc, // 232 bf #-2 + 0xe000, // 234 mov #0, r0 + 0xcf80, // 236 or.b #0x80,@(r0,gbr) + 0xd80b, // 238 mov.l @(_start_cd,pc), r8 // 24000018 + 0xd30c, // 23a mov.l @(_max_len,pc), r3 + 0x5b84, // 23c mov.l @(h'10,r8), r11 // master vbr + 0x5a82, // 23e mov.l @(8,r8), r10 // entry + 0x5081, // 240 mov.l @(4,r8), r0 // len + 0x5980, // 242 mov.l @(0,r8), r9 // dst + 0x3036, // 244 cmp/hi r3,r0 + 0x8b00, // 246 bf #1 + 0x6033, // 248 mov r3,r0 + 0x7820, // 24a add #0x20, r8 + // ipl_copy: + 0x6286, // 24c mov.l @r8+, r2 + 0x2922, // 24e mov.l r2, @r9 + 0x7904, // 250 add #4, r9 + 0x70fc, // 252 add #-4, r0 + 0x8800, // 254 cmp/eq #0, r0 + 0x8bf9, // 256 bf #-5 + // + 0x4b2e, // 258 ldc r11, vbr + 0x6043, // 25a mov r4, r0 // M_OK + 0xc208, // 25c mov.l r0, @(h'20,gbr) + 0x4a2b, // 25e jmp @r10 + 0x0009, // 260 nop + 0x0009, // 262 nop // pad + ('_'<<8)|'C', ('D'<<8)|'_', // 264 __cd_ + 0x2400, 0x0018, // 268 _start_cd + 0x0001, 0xffe0, // 26c _max_len }; static const u16 ssh2_code[] = { - 0xaffe, // bra - 0x0009, // nop + 0xaffe, // 200 bra + 0x0009, // 202 nop // code to wait for master, in case authentic master BIOS is used - 0xd104, // mov.l @(_m_ok,pc), r1 - 0xd206, // mov.l @(_start,pc), r2 - 0xc608, // mov.l @(h'20,gbr), r0 - 0x3100, // cmp/eq r0, r1 - 0x8bfc, // bf #-2 - 0xd003, // mov.l @(_s_ok,pc), r0 - 0xc209, // mov.l r0, @(h'24,gbr) - 0x6822, // mov.l @r2, r8 - 0x482b, // jmp @r8 - 0x0009, // nop - ('M'<<8)|'_', ('O'<<8)|'K', - ('S'<<8)|'_', ('O'<<8)|'K', - 0x2200, 0x03e4 // slave start pointer in ROM + 0xd106, // 204 mov.l @(_m_ok,pc), r1 + 0xd208, // 206 mov.l @(_start,pc), r2 + 0xc608, // 208 mov.l @(h'20,gbr), r0 + 0x3100, // 20a cmp/eq r0, r1 + 0x8bfc, // 20c bf #-2 + 0xc400, // 20e mov.b @(h'0,gbr),r0 + 0xc801, // 210 tst #1, r0 + 0xd004, // 212 mov.l @(_s_ok,pc), r0 + 0x8b0a, // 214 bf cd_start + 0xc209, // 216 mov.l r0, @(h'24,gbr) + 0x6822, // 218 mov.l @r2, r8 + 0x482b, // 21a jmp @r8 + 0x0009, // 21c nop + 0x0009, // 21e nop + ('M'<<8)|'_', ('O'<<8)|'K', // 220 + ('S'<<8)|'_', ('O'<<8)|'K', // 224 + 0x2200, 0x03e4, // slave start pointer in ROM + // cd_start: + 0xd803, // 22c mov.l @(_start_cd,pc), r8 // 24000018 + 0x5b85, // 22e mov.l @(h'14,r8), r11 // slave vbr + 0x5a83, // 230 mov.l @(h'0c,r8), r10 // entry + 0x4b2e, // 232 ldc r11, vbr + 0xc209, // 234 mov.l r0, @(h'24,gbr) // write S_OK + 0x4a2b, // 236 jmp @r10 + 0x0009, // 238 nop + 0x0009, // 23a nop + 0x2400, 0x0018, // 23c _start_cd }; #define HWSWAP(x) (((u16)(x) << 16) | ((x) >> 16)) @@ -1297,23 +1667,37 @@ 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), @@ -1323,43 +1707,43 @@ static void get_bios(void) // MSH2 if (p32x_bios_m != NULL) { elprintf(EL_STATUS|EL_32X, "32x: using supplied master SH2 BIOS"); - Byteswap(Pico32xMem->sh2_rom_m, p32x_bios_m, sizeof(Pico32xMem->sh2_rom_m)); + Byteswap(&Pico32xMem->sh2_rom_m, p32x_bios_m, sizeof(Pico32xMem->sh2_rom_m)); } else { - pl = (u32 *)Pico32xMem->sh2_rom_m; + pl = (u32 *)&Pico32xMem->sh2_rom_m; // fill exception vector table to our trap address for (i = 0; i < 128; i++) pl[i] = HWSWAP(0x200); - // startup code - memcpy(Pico32xMem->sh2_rom_m + 0x200, msh2_code, sizeof(msh2_code)); - - // reset SP - pl[1] = pl[3] = HWSWAP(0x6040000); // start pl[0] = pl[2] = HWSWAP(0x204); + // reset SP + pl[1] = pl[3] = HWSWAP(0x6040000); + + // startup code + memcpy(&Pico32xMem->sh2_rom_m.b[0x200], msh2_code, sizeof(msh2_code)); } // SSH2 if (p32x_bios_s != NULL) { elprintf(EL_STATUS|EL_32X, "32x: using supplied slave SH2 BIOS"); - Byteswap(Pico32xMem->sh2_rom_s, p32x_bios_s, sizeof(Pico32xMem->sh2_rom_s)); + Byteswap(&Pico32xMem->sh2_rom_s, p32x_bios_s, sizeof(Pico32xMem->sh2_rom_s)); } else { - pl = (u32 *)Pico32xMem->sh2_rom_s; + pl = (u32 *)&Pico32xMem->sh2_rom_s; // fill exception vector table to our trap address for (i = 0; i < 128; i++) pl[i] = HWSWAP(0x200); - // startup code - memcpy(Pico32xMem->sh2_rom_s + 0x200, ssh2_code, sizeof(ssh2_code)); - - // reset SP - pl[1] = pl[3] = HWSWAP(0x603f800); // start pl[0] = pl[2] = HWSWAP(0x204); + // reset SP + pl[1] = pl[3] = HWSWAP(0x603f800); + + // startup code + memcpy(&Pico32xMem->sh2_rom_s.b[0x200], ssh2_code, sizeof(ssh2_code)); } } @@ -1389,6 +1773,19 @@ void Pico32xSwapDRAM(int b) sh2_write16_map[0x04/2] = sh2_write16_map[0x24/2] = b ? sh2_write16_dram1 : sh2_write16_dram0; } +static void bank_switch_rom_sh2(void) +{ + if (!carthw_ssf2_active) { + // easy + sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = + sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom); + } + else { + sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = MAP_HANDLER(sh2_read8_rom); + sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_HANDLER(sh2_read16_rom); + } +} + void PicoMemSetup32x(void) { unsigned int rs; @@ -1407,28 +1804,28 @@ void PicoMemSetup32x(void) // so that we can avoid handling the RV bit. // m68k_map_unmap(0x000000, 0x3fffff); - // MD ROM area - rs = sizeof(Pico32xMem->m68k_rom_bank); - cpu68k_map_set(m68k_read8_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); - cpu68k_map_set(m68k_read16_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); - cpu68k_map_set(m68k_write8_map, 0x000000, rs - 1, PicoWrite8_hint, 1); // TODO verify - cpu68k_map_set(m68k_write16_map, 0x000000, rs - 1, PicoWrite16_hint, 1); - - // 32X ROM (unbanked, XXX: consider mirroring?) - rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; - if (rs > 0x80000) - rs = 0x80000; - cpu68k_map_set(m68k_read8_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); - cpu68k_map_set(m68k_read16_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); -#ifdef EMU_F68K - // setup FAME fetchmap - PicoCpuFM68k.Fetch[0] = (unsigned long)Pico32xMem->m68k_rom; - for (rs = 0x88; rs < 0x90; rs++) - PicoCpuFM68k.Fetch[rs] = (unsigned long)Pico.rom - 0x880000; -#endif - - // 32X ROM (banked) - bank_switch(0); + if (!Pico.m.ncart_in) { + // MD ROM area + rs = sizeof(Pico32xMem->m68k_rom_bank); + cpu68k_map_set(m68k_read8_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); + cpu68k_map_set(m68k_read16_map, 0x000000, rs - 1, Pico32xMem->m68k_rom_bank, 0); + cpu68k_map_set(m68k_write8_map, 0x000000, rs - 1, PicoWrite8_hint, 1); // TODO verify + cpu68k_map_set(m68k_write16_map, 0x000000, rs - 1, PicoWrite16_hint, 1); + + // 32X ROM (unbanked, XXX: consider mirroring?) + rs = (Pico.romsize + M68K_BANK_MASK) & ~M68K_BANK_MASK; + if (rs > 0x80000) + rs = 0x80000; + cpu68k_map_set(m68k_read8_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); + cpu68k_map_set(m68k_read16_map, 0x880000, 0x880000 + rs - 1, Pico.rom, 0); + cpu68k_map_set(m68k_write8_map, 0x880000, 0x880000 + rs - 1, PicoWrite8_cart, 1); + cpu68k_map_set(m68k_write16_map, 0x880000, 0x880000 + rs - 1, PicoWrite16_cart, 1); + + // 32X ROM (banked) + bank_switch_rom_68k(0); + cpu68k_map_set(m68k_write8_map, 0x900000, 0x9fffff, PicoWrite8_bank, 1); + cpu68k_map_set(m68k_write16_map, 0x900000, 0x9fffff, PicoWrite16_bank, 1); + } // SYS regs cpu68k_map_set(m68k_read8_map, 0xa10000, 0xa1ffff, PicoRead8_32x_on, 1); @@ -1460,8 +1857,7 @@ void PicoMemSetup32x(void) sh2_write8_map[0x00/2] = sh2_write8_map[0x20/2] = sh2_write8_cs0; sh2_write16_map[0x00/2] = sh2_write16_map[0x20/2] = sh2_write16_cs0; // CS1 - ROM - sh2_read8_map[0x02/2].addr = sh2_read8_map[0x22/2].addr = - sh2_read16_map[0x02/2].addr = sh2_read16_map[0x22/2].addr = MAP_MEMORY(Pico.rom); + bank_switch_rom_sh2(); sh2_read8_map[0x02/2].mask = sh2_read8_map[0x22/2].mask = sh2_read16_map[0x02/2].mask = sh2_read16_map[0x22/2].mask = 0x3fffff; // FIXME // CS2 - DRAM - done by Pico32xSwapDRAM() @@ -1470,7 +1866,8 @@ void PicoMemSetup32x(void) // CS3 - SDRAM sh2_read8_map[0x06/2].addr = sh2_read8_map[0x26/2].addr = sh2_read16_map[0x06/2].addr = sh2_read16_map[0x26/2].addr = MAP_MEMORY(Pico32xMem->sdram); - sh2_write8_map[0x06/2] = sh2_write8_map[0x26/2] = sh2_write8_sdram; + sh2_write8_map[0x06/2] = sh2_write8_sdram; + sh2_write8_map[0x26/2] = sh2_write8_sdram_wt; sh2_write16_map[0x06/2] = sh2_write16_map[0x26/2] = sh2_write16_sdram; sh2_read8_map[0x06/2].mask = sh2_read8_map[0x26/2].mask = sh2_read16_map[0x06/2].mask = sh2_read16_map[0x26/2].mask = 0x03ffff; @@ -1495,11 +1892,22 @@ void PicoMemSetup32x(void) sh2_drc_mem_setup(&msh2); sh2_drc_mem_setup(&ssh2); + + // z80 hack + z80_map_set(z80_write_map, 0x8000, 0xffff, z80_md_bank_write_32x, 1); +} + +void p32x_update_banks(void) +{ + bank_switch_rom_68k(Pico32x.regs[4 / 2]); + bank_switch_rom_sh2(); + if (Pico32x.emu_flags & P32XF_DRC_ROM_C) + sh2_drc_flush_all(); } void Pico32xMemStateLoaded(void) { - bank_switch(Pico32x.regs[4 / 2]); + bank_switch_rom_68k(Pico32x.regs[4 / 2]); Pico32xSwapDRAM((Pico32x.vdp_regs[0x0a / 2] & P32XV_FS) ^ P32XV_FS); memset(Pico32xMem->pwm, 0, sizeof(Pico32xMem->pwm)); Pico32x.dirty_pal = 1;