const void *func_or_mh, int is_func)\r
{\r
xmap_set(map, M68K_MEM_SHIFT, start_addr, end_addr, func_or_mh, is_func);\r
+#ifdef EMU_F68K\r
+ // setup FAME fetchmap\r
+ if (!is_func)\r
+ {\r
+ int shiftout = 24 - FAMEC_FETCHBITS;\r
+ int i = start_addr >> shiftout;\r
+ uptr base = (uptr)func_or_mh - (i << shiftout);\r
+ for (; i <= (end_addr >> shiftout); i++)\r
+ PicoCpuFM68k.Fetch[i] = base;\r
+ }\r
+#endif\r
}\r
\r
// more specialized/optimized function (does same as above)\r
addr >>= 1;\r
for (i = start_addr >> shift; i <= end_addr >> shift; i++)\r
r8map[i] = r16map[i] = w8map[i] = w16map[i] = addr;\r
+#ifdef EMU_F68K\r
+ // setup FAME fetchmap\r
+ {\r
+ M68K_CONTEXT *ctx = is_sub ? &PicoCpuFS68k : &PicoCpuFM68k;\r
+ int shiftout = 24 - FAMEC_FETCHBITS;\r
+ i = start_addr >> shiftout;\r
+ addr = (uptr)ptr - (i << shiftout);\r
+ for (; i <= (end_addr >> shiftout); i++)\r
+ ctx->Fetch[i] = addr;\r
+ }\r
+#endif\r
}\r
\r
static u32 m68k_unmapped_read8(u32 a)\r
}\r
}\r
\r
+static int get_scanline(int is_from_z80);\r
+\r
+static void psg_write_68k(u32 d)\r
+{\r
+ // look for volume write and update if needed\r
+ if ((d & 0x90) == 0x90 && PsndPsgLine < Pico.m.scanline)\r
+ PsndDoPSG(Pico.m.scanline);\r
+\r
+ SN76496Write(d);\r
+}\r
+\r
+static void psg_write_z80(u32 d)\r
+{\r
+ if ((d & 0x90) == 0x90) {\r
+ int scanline = get_scanline(1);\r
+ if (PsndPsgLine < scanline)\r
+ PsndDoPSG(scanline);\r
+ }\r
+\r
+ SN76496Write(d);\r
+}\r
+\r
// -----------------------------------------------------------------\r
\r
#ifndef _ASM_MEMORY_C\r
EEPROM_write16(d);\r
}\r
else {\r
- // XXX: hardware could easily use MSB too..\r
u8 *pm = (u8 *)(SRam.data - SRam.start + a);\r
- if (*pm != (u8)d) {\r
+ if (pm[0] != (u8)(d >> 8)) {\r
SRam.changed = 1;\r
- *pm = (u8)d;\r
+ pm[0] = (u8)(d >> 8);\r
+ }\r
+ if (pm[1] != (u8)d) {\r
+ SRam.changed = 1;\r
+ pm[1] = (u8)d;\r
}\r
}\r
}\r
}\r
// TODO: probably other VDP access too? Maybe more mirrors?\r
if ((a & 0x7ff9) == 0x7f11) { // PSG Sound\r
- if (PicoOpt & POPT_EN_PSG)\r
- SN76496Write(d);\r
+ psg_write_68k(d);\r
return;\r
}\r
if ((a & 0x7f00) == 0x6000) // Z80 BANK register\r
static void PicoWrite8_vdp(u32 a, u32 d)\r
{\r
if ((a & 0x00f9) == 0x0011) { // PSG Sound\r
- if (PicoOpt & POPT_EN_PSG)\r
- SN76496Write(d);\r
+ psg_write_68k(d);\r
return;\r
}\r
if ((a & 0x00e0) == 0x0000) {\r
\r
static void PicoWrite16_vdp(u32 a, u32 d)\r
{\r
- if ((a & 0x00f9) == 0x0010) { // PSG Sound\r
- if (PicoOpt & POPT_EN_PSG)\r
- SN76496Write(d);\r
- return;\r
- }\r
+ if ((a & 0x00f9) == 0x0010) // PSG Sound\r
+ psg_write_68k(d);\r
if ((a & 0x00e0) == 0x0000) {\r
PicoVideoWrite(a, d);\r
return;\r
{\r
int i;\r
// by default, point everything to first 64k of ROM\r
- for (i = 0; i < M68K_FETCHBANK1; i++)\r
+ for (i = 0; i < M68K_FETCHBANK1 * 0xe0 / 0x100; i++)\r
PicoCpuFM68k.Fetch[i] = (unsigned long)Pico.rom - (i<<(24-FAMEC_FETCHBITS));\r
// now real ROM\r
for (i = 0; i < M68K_FETCHBANK1 && (i<<(24-FAMEC_FETCHBITS)) < Pico.romsize; i++)\r
PicoCpuFM68k.Fetch[i] = (unsigned long)Pico.rom;\r
- // .. and RAM\r
- for (i = M68K_FETCHBANK1*14/16; i < M68K_FETCHBANK1; i++)\r
- PicoCpuFM68k.Fetch[i] = (unsigned long)Pico.ram - (i<<(24-FAMEC_FETCHBITS));\r
+ // RAM already set\r
}\r
#endif\r
#ifdef EMU_M68K\r
int scanline = get_scanline(is_from_z80);\r
//elprintf(EL_STATUS, "%03i -> %03i dac w %08x z80 %i", PsndDacLine, scanline, d, is_from_z80);\r
ym2612.dacout = ((int)d - 0x80) << 6;\r
- if (PsndOut && ym2612.dacen && scanline >= PsndDacLine)\r
+ if (ym2612.dacen)\r
PsndDoDAC(scanline);\r
return 0;\r
}\r
}\r
case 0x2b: { /* DAC Sel (YM2612) */\r
int scanline = get_scanline(is_from_z80);\r
- ym2612.dacen = d & 0x80;\r
- if (d & 0x80) PsndDacLine = scanline;\r
+ if (ym2612.dacen != (d & 0x80)) {\r
+ ym2612.dacen = d & 0x80;\r
+ PsndDacLine = scanline;\r
+ }\r
#ifdef __GP2X__\r
if (PicoOpt & POPT_EXT_FM) YM2612Write_940(a, d, scanline);\r
#endif\r
\r
static unsigned char z80_md_vdp_read(unsigned short a)\r
{\r
- // TODO?\r
+ if ((a & 0x00e0) == 0x0000)\r
+ return PicoVideoRead8(a); // FIXME: depends on 68k cycles\r
+\r
elprintf(EL_ANOMALY, "z80 invalid r8 [%06x] %02x", a, 0xff);\r
return 0xff;\r
}\r
\r
static void z80_md_vdp_br_write(unsigned int a, unsigned char data)\r
{\r
- // TODO: allow full VDP access\r
if ((a&0xfff9) == 0x7f11) // 7f11 7f13 7f15 7f17\r
{\r
- if (PicoOpt & POPT_EN_PSG)\r
- SN76496Write(data);\r
+ psg_write_z80(data);\r
return;\r
}\r
+ // at least VDP data writes hang my machine\r
\r
if ((a>>8) == 0x60)\r
{\r