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)) {
else {
m68k_poll.cnt = 0;
m68k_poll.addr = a;
+ SekNotPolling = 0;
}
m68k_poll.cycles = cycles;
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_68k & 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)) {
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);
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];
r[6 / 2] &= ~P32XS_68S;
if ((Pico32x.dmac0_fifo_ptr & 3) == 0) {
- p32x_sync_sh2s(SekCyclesDoneT());
+ p32x_sync_sh2s(SekCyclesDone());
p32x_dreq0_trigger();
}
}
return;
case 0x03: // irq ctl
if ((d ^ r[0x02 / 2]) & 3) {
- int cycles = SekCyclesDoneT();
+ int cycles = SekCyclesDone();
p32x_sync_sh2s(cycles);
r[0x02 / 2] = d & 3;
p32x_update_cmd_irq(NULL, cycles);
case 0x3f:
return;
pwm_write:
- p32x_pwm_write16(a & ~1, d, NULL, SekCyclesDoneT());
+ p32x_pwm_write16(a & ~1, d, NULL, SekCyclesDone());
return;
}
if ((a & 0x30) == 0x20) {
- int cycles = SekCyclesDoneT();
+ int cycles = SekCyclesDone();
int comreg;
if (REG8IN16(r, a) == d)
case 0x30: // PWM control
d = (r[a / 2] & ~0x0f) | (d & 0x0f);
r[a / 2] = d;
- p32x_pwm_write16(a, d, NULL, SekCyclesDoneT());
+ p32x_pwm_write16(a, d, NULL, SekCyclesDone());
return;
}
// comm port
if ((a & 0x30) == 0x20) {
- int cycles = SekCyclesDoneT();
+ int cycles = SekCyclesDone();
int comreg;
if (r[a / 2] == d)
}
// PWM
else if ((a & 0x30) == 0x30) {
- p32x_pwm_write16(a, d, NULL, SekCyclesDoneT());
+ p32x_pwm_write16(a, d, NULL, SekCyclesDone());
return;
}
static u32 p32x_sh2reg_read16(u32 a, SH2 *sh2)
{
u16 *r = Pico32x.regs;
- a &= 0xfe; // ?
+ a &= 0x3e;
switch (a) {
case 0x00: // adapter/irq ctl
u16 *r = Pico32x.regs;
u32 old;
- a &= 0xff;
+ a &= 0x3f;
sh2->poll_addr = 0;
switch (a) {
static void p32x_sh2reg_write16(u32 a, u32 d, SH2 *sh2)
{
- a &= 0xfe;
+ a &= 0x3e;
sh2->poll_addr = 0;
goto out_16to8;
}
- if ((a & 0xfc00) != 0x5000)
- return PicoRead8_io(a);
+ if ((a & 0xfc00) != 0x5000) {
+ if (PicoAHW & PAHW_MCD)
+ return PicoRead8_mcd_io(a);
+ else
+ return PicoRead8_io(a);
+ }
if ((a & 0xfff0) == 0x5180) { // a15180
d = p32x_vdp_read16(a);
goto out;
}
- if ((a & 0xfc00) != 0x5000)
- return PicoRead16_io(a);
+ if ((a & 0xfc00) != 0x5000) {
+ if (PicoAHW & PAHW_MCD)
+ return PicoRead16_mcd_io(a);
+ else
+ return PicoRead16_io(a);
+ }
if ((a & 0xfff0) == 0x5180) { // a15180
d = p32x_vdp_read16(a);
}
if ((a & 0xfc00) != 0x5000) {
- PicoWrite8_io(a, d);
+ if (PicoAHW & PAHW_MCD)
+ PicoWrite8_mcd_io(a, d);
+ else
+ PicoWrite8_io(a, d);
if (a == 0xa130f1)
bank_switch(Pico32x.regs[4 / 2]);
return;
}
if ((a & 0xfc00) != 0x5000) {
- PicoWrite16_io(a, d);
+ if (PicoAHW & PAHW_MCD)
+ PicoWrite16_mcd_io(a, d);
+ else
+ PicoWrite16_io(a, d);
if (a == 0xa130f0)
bank_switch(Pico32x.regs[4 / 2]);
return;
{
unsigned int rs, bank;
+ if (Pico.m.ncart_in)
+ return;
+
bank = b << 20;
if ((Pico.m.sram_reg & SRR_MAPPED) && bank == SRam.start) {
bank_map_handler();
sh2_burn_cycles(sh2, 1*2);
- // 0x3ff00 is veridied
- if ((a & 0x3ff00) == 0x4000) {
+ // 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;
// 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];
sh2_burn_cycles(sh2, 1*2);
- if ((a & 0x3ff00) == 0x4000) {
+ 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];
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;
}
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;
}
}
- if ((a & 0x3ff00) == 0x4000) {
+ if ((a & 0x3ffc0) == 0x4000) {
p32x_sh2reg_write16(a, d, sh2);
return;
}
// -----------------------------------------------------------------
+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 <self>
- 0x0009, // nop
+ 0xaffe, // 200 bra <self>
+ 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 <self>
- 0x0009, // nop
+ 0xaffe, // 200 bra <self>
+ 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))
// 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));
}
}
// 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);
- 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);
+ 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);
#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;
+ // 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);
- cpu68k_map_set(m68k_write8_map, 0x900000, 0x9fffff, PicoWrite8_bank, 1);
- cpu68k_map_set(m68k_write16_map, 0x900000, 0x9fffff, PicoWrite16_bank, 1);
+ // 32X ROM (banked)
+ bank_switch(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);
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 Pico32xMemStateLoaded(void)