Pico.video.addr=(unsigned short)(Pico.video.addr+Pico.video.reg[0xf]);\r
}\r
\r
+static NOINLINE void VideoWrite128(u32 a, u16 d)\r
+{\r
+ // nasty\r
+ a = ((a & 2) >> 1) | ((a & 0x400) >> 9) | (a & 0x3FC) | ((a & 0x1F800) >> 1);\r
+ ((u8 *)Pico.vram)[a] = d;\r
+}\r
+\r
static void VideoWrite(u16 d)\r
{\r
unsigned int a=Pico.video.addr;\r
case 3: Pico.m.dirtyPal = 1;\r
Pico.cram [(a>>1)&0x003f]=d; break; // wraps (Desert Strike)\r
case 5: Pico.vsram[(a>>1)&0x003f]=d; break;\r
+ case 0x81:\r
+ a |= Pico.video.addr_u << 16;\r
+ VideoWrite128(a, d);\r
+ break;\r
//default:elprintf(EL_ANOMALY, "VDP write %04x with bad type %i", d, Pico.video.type); break;\r
}\r
\r
}\r
break;\r
\r
+ case 0x81: // vram 128k\r
+ a |= Pico.video.addr_u << 16;\r
+ for(; len; len--)\r
+ {\r
+ VideoWrite128(a, base[source++ & mask]);\r
+ // AutoIncrement\r
+ a = (a + inc) & 0x1ffff;\r
+ }\r
+ Pico.video.addr_u = a >> 16;\r
+ break;\r
+\r
default:\r
if (Pico.video.type != 0 || (EL_LOGMASK & EL_VDPDMA))\r
elprintf(EL_VDPDMA|EL_ANOMALY, "DMA with bad type %i", Pico.video.type);\r
Pico.video.reg[0x16] = source >> 8;\r
}\r
\r
-static void CommandChange(void)\r
+static NOINLINE void CommandChange(void)\r
{\r
- struct PicoVideo *pvid=&Pico.video;\r
- unsigned int cmd=0,addr=0;\r
+ struct PicoVideo *pvid = &Pico.video;\r
+ unsigned int cmd, addr;\r
\r
- cmd=pvid->command;\r
+ cmd = pvid->command;\r
\r
// Get type of transfer 0xc0000030 (v/c/vsram read/write)\r
- pvid->type=(unsigned char)(((cmd>>2)&0xc)|(cmd>>30));\r
+ pvid->type = (u8)(((cmd >> 2) & 0xc) | (cmd >> 30));\r
+ if (pvid->type == 1) // vram\r
+ pvid->type |= pvid->reg[1] & 0x80; // 128k\r
\r
// Get address 0x3fff0003\r
- addr =(cmd>>16)&0x3fff;\r
- addr|=(cmd<<14)&0xc000;\r
- pvid->addr=(unsigned short)addr;\r
+ addr = (cmd >> 16) & 0x3fff;\r
+ addr |= (cmd << 14) & 0xc000;\r
+ pvid->addr = (u16)addr;\r
+ pvid->addr_u = (u8)((cmd >> 2) & 1);\r
}\r
\r
static void DrawSync(int blank_on)\r
// elprintf(EL_STATUS, "PicoVideoWrite [%06x] %04x", a, d);\r
a&=0x1c;\r
\r
- if (a==0x00) // Data port 0 or 2\r
+ switch (a)\r
{\r
+ case 0x00: // Data port 0 or 2\r
// try avoiding the sync..\r
if (Pico.m.scanline < 224 && (pvid->reg[1]&0x40) &&\r
!(!pvid->pending &&\r
if ((pvid->command&0x80) && (pvid->reg[1]&0x10) && (pvid->reg[0x17]>>6)==2)\r
DmaFill(d);\r
\r
- return;\r
- }\r
+ break;\r
\r
- if (a==0x04) // Control (command) port 4 or 6\r
- {\r
+ case 0x04: // Control (command) port 4 or 6\r
if (pvid->pending)\r
{\r
// Low word of command:\r
pvid->pending=1;\r
}\r
}\r
+ break;\r
+\r
+ // case 0x08: // 08 0a - HV counter - lock up\r
+ // case 0x0c: // 0c 0e - HV counter - lock up\r
+ // case 0x10: // 10 12 - PSG - handled by caller\r
+ // case 0x14: // 14 16 - PSG - handled by caller\r
+ // case 0x18: // 18 1a - no effect?\r
+ case 0x1c: // 1c 1e - debug\r
+ pvid->debug = d;\r
+ pvid->debug_p = 0;\r
+ if (d & (1 << 6)) {\r
+ pvid->debug_p |= PVD_KILL_A | PVD_KILL_B;\r
+ pvid->debug_p |= PVD_KILL_S_LO | PVD_KILL_S_HI;\r
+ }\r
+ switch ((d >> 7) & 3) {\r
+ case 1:\r
+ pvid->debug_p &= ~(PVD_KILL_S_LO | PVD_KILL_S_HI);\r
+ pvid->debug_p |= PVD_FORCE_S;\r
+ break;\r
+ case 2:\r
+ pvid->debug_p &= ~PVD_KILL_A;\r
+ pvid->debug_p |= PVD_FORCE_A;\r
+ break;\r
+ case 3:\r
+ pvid->debug_p &= ~PVD_KILL_B;\r
+ pvid->debug_p |= PVD_FORCE_B;\r
+ break;\r
+ }\r
+ break;\r
}\r
}\r
\r