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]
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);
}
d &= 3;
if (r[0x04 / 2] != d) {
r[0x04 / 2] = d;
- bank_switch(d);
+ bank_switch_rom_68k(d);
}
return;
case 0x06: // ignored, always 0
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);
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
// 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];
}
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;
}
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
}
if ((a & 0xfc00) != 0x5000) {
- if (PicoAHW & PAHW_MCD)
+ if (PicoIn.AHW & PAHW_MCD)
return PicoRead8_mcd_io(a);
else
return PicoRead8_io(a);
}
if ((a & 0xfc00) != 0x5000) {
- if (PicoAHW & PAHW_MCD)
+ if (PicoIn.AHW & PAHW_MCD)
return PicoRead16_mcd_io(a);
else
return PicoRead16_io(a);
}
if ((a & 0xfc00) != 0x5000) {
- if (PicoAHW & PAHW_MCD)
+ if (PicoIn.AHW & PAHW_MCD)
PicoWrite8_mcd_io(a, d);
else
PicoWrite8_io(a, d);
if (a == 0xa130f1)
- bank_switch(Pico32x.regs[4 / 2]);
+ bank_switch_rom_68k(Pico32x.regs[4 / 2]);
return;
}
}
if ((a & 0xfc00) != 0x5000) {
- if (PicoAHW & PAHW_MCD)
+ if (PicoIn.AHW & PAHW_MCD)
PicoWrite16_mcd_io(a, d);
else
PicoWrite16_io(a, d);
if (a == 0xa130f0)
- bank_switch(Pico32x.regs[4 / 2]);
+ bank_switch_rom_68k(Pico32x.regs[4 / 2]);
return;
}
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);
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);
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);
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);
cpu68k_map_set(m68k_read16_map, 0x900000, 0x9fffff, PicoRead16_bank, 1);
}
-static void bank_switch(int b)
+static void bank_switch_rom_68k(int b)
{
- unsigned int rs, bank;
+ unsigned int rs, bank, bank2;
if (Pico.m.ncart_in)
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;
}
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);
+ 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);
+ }
}
// -----------------------------------------------------------------
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)
{
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)
{
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),
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;
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;
-#endif
// 32X ROM (banked)
- bank_switch(0);
+ 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);
}
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()
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;
notaz.gp2x.de / picodrive.git / blobdiff