/***********************************************************\r
* *\r
- * This source is taken from the Gens project *\r
+ * This source was taken from the Gens project *\r
* Written by Stéphane Dallongeville *\r
* Copyright (c) 2002 by Stéphane Dallongeville *\r
- * Modified/adapted for Picodrive by notaz, 2007 *\r
+ * Modified/adapted for PicoDrive by notaz, 2007 *\r
* *\r
***********************************************************/\r
\r
{\r
// Reseting CDC\r
\r
- memset(Pico_mcd->cdc.Buffer, 0, (16 * 1024 * 2) + 2352);\r
-\r
- CDC_Update_Header();\r
+ memset(Pico_mcd->cdc.Buffer, 0, sizeof(Pico_mcd->cdc.Buffer));\r
\r
Pico_mcd->cdc.COMIN = 0;\r
Pico_mcd->cdc.IFSTAT = 0xFF;\r
}\r
\r
\r
-void LC89510_Reset(void)\r
+PICO_INTERNAL void LC89510_Reset(void)\r
{\r
CDD_Reset();\r
CDC_Reset();\r
}\r
\r
\r
-void Update_CDC_TRansfer(int which)\r
+PICO_INTERNAL void Update_CDC_TRansfer(int which)\r
{\r
- unsigned int DMA_Adr, dep, length, len;\r
+ unsigned int DMA_Adr, dep, length;\r
unsigned short *dest;\r
unsigned char *src;\r
\r
else length = CDC_DMA_SPEED;\r
\r
\r
- // TODO: dst bounds checking? DAC.N alignment?\r
+ // TODO: dst bounds checking?\r
src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;\r
DMA_Adr = (Pico_mcd->s68k_regs[0xA]<<8) | Pico_mcd->s68k_regs[0xB];\r
\r
{\r
if (Pico_mcd->s68k_regs[3] & 4)\r
{\r
+ // test: Final Fight\r
+ int bank = !(Pico_mcd->s68k_regs[3]&1);\r
dep = ((DMA_Adr & 0x3FFF) << 3);\r
cdprintf("CD DMA # %04x -> word_ram1M # %06x, len=%i",\r
Pico_mcd->cdc.DAC.N, dep, length);\r
\r
- dep = ((DMA_Adr & 0x3FFF) << 4);\r
- if (!(Pico_mcd->s68k_regs[3]&1)) dep += 2;\r
- dest = (unsigned short *) (Pico_mcd->word_ram + dep);\r
+ dest = (unsigned short *) (Pico_mcd->word_ram1M[bank] + dep);\r
+\r
+ memcpy16bswap(dest, src, length);\r
\r
- for (len = length; len > 0; len--, src+=2, dest+=2)\r
- *dest = (src[0]<<8) | src[1];\r
+ /*{ // debug\r
+ unsigned char *b1 = Pico_mcd->word_ram1M[bank] + dep;\r
+ unsigned char *b2 = (unsigned char *)(dest+length) - 8;\r
+ dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
+ b1[0], b1[1], b1[4], b1[5], b2[0], b2[1], b2[4], b2[5]);\r
+ }*/\r
}\r
else\r
{\r
dep = ((DMA_Adr & 0x7FFF) << 3);\r
cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",\r
Pico_mcd->cdc.DAC.N, dep, length);\r
- dest = (unsigned short *) (Pico_mcd->word_ram + dep);\r
+ dest = (unsigned short *) (Pico_mcd->word_ram2M + dep);\r
\r
- for (len = length; len > 0; len--, src+=2, dest++)\r
- *dest = (src[0]<<8) | src[1];\r
+ memcpy16bswap(dest, src, length);\r
+\r
+ /*{ // debug\r
+ unsigned char *b1 = Pico_mcd->word_ram2M + dep;\r
+ unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
+ dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
+ b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
+ }*/\r
}\r
}\r
- else if (which == 4) // PCM RAM\r
+ else if (which == 4) // PCM RAM (check: popful Mail)\r
{\r
-#if 0\r
- dest = (unsigned char *) Ram_PCM;\r
- dep = ((DMA_Adr & 0x03FF) << 2) + PCM_Chip.Bank;\r
-#else\r
- cdprintf("CD DMA # %04x -> PCD TODO", Pico_mcd->cdc.DAC.N);\r
-#endif\r
+ dep = (DMA_Adr & 0x03FF) << 2;\r
+ dprintf("CD DMA # %04x -> PCM[%i] # %04x, len=%i",\r
+ Pico_mcd->cdc.DAC.N, Pico_mcd->pcm.bank, dep, length);\r
+ dest = (unsigned short *) (Pico_mcd->pcm_ram_b[Pico_mcd->pcm.bank] + dep);\r
+\r
+ if (Pico_mcd->cdc.DAC.N & 1) /* unaligned src? */\r
+ memcpy(dest, src, length*2);\r
+ else memcpy16(dest, (unsigned short *) src, length);\r
}\r
else if (which == 5) // PRG RAM\r
{\r
cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",\r
Pico_mcd->cdc.DAC.N, dep, length);\r
\r
- for (len = length; len > 0; len--, src+=2, dest++)\r
- *dest = (src[0]<<8) | src[1];\r
+ memcpy16bswap(dest, src, length);\r
+\r
+ /*{ // debug\r
+ unsigned char *b1 = Pico_mcd->prg_ram + dep;\r
+ unsigned char *b2 = (unsigned char *)(dest+length) - 4;\r
+ dprintf("%02x %02x %02x %02x .. %02x %02x %02x %02x",\r
+ b1[0], b1[1], b1[2], b1[3], b2[0], b2[1], b2[2], b2[3]);\r
+ }*/\r
}\r
\r
length <<= 1;\r
Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;\r
if (Pico_mcd->scd.Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;\r
else Pico_mcd->cdc.DBC.N = 0;\r
+\r
+ // update DMA_Adr\r
+ length >>= 2;\r
+ if (which != 4) length >>= 1;\r
+ DMA_Adr += length;\r
+ Pico_mcd->s68k_regs[0xA] = DMA_Adr >> 8;\r
+ Pico_mcd->s68k_regs[0xB] = DMA_Adr;\r
}\r
\r
\r
-unsigned short Read_CDC_Host(int is_sub)\r
+PICO_INTERNAL_ASM unsigned short Read_CDC_Host(int is_sub)\r
{\r
int addr;\r
\r
if (!(Pico_mcd->scd.Status_CDC & 0x08))\r
{\r
// Transfer data disabled\r
- cdprintf("Read_CDC_Host: Transfer data disabled");\r
+ cdprintf("Read_CDC_Host FIXME: Transfer data disabled");\r
return 0;\r
}\r
\r
(!is_sub && (Pico_mcd->s68k_regs[4] & 7) != 2))\r
{\r
// Wrong setting\r
- cdprintf("Read_CDC_Host: Wrong setting");\r
+ cdprintf("Read_CDC_Host FIXME: Wrong setting");\r
return 0;\r
}\r
\r
(Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1], Pico_mcd->cdc.DAC.N, Pico_mcd->cdc.DBC.N);\r
\r
return (Pico_mcd->cdc.Buffer[addr]<<8) | Pico_mcd->cdc.Buffer[addr+1];\r
-\r
-#if 0\r
- __asm\r
- {\r
- mov esi, Pico_mcd->cdc.DAC.N\r
- lea ebx, Pico_mcd->cdc.Buffer\r
-// and esi, 0x3FFF\r
- mov ax, [ebx + esi]\r
- add esi, 2\r
- rol ax, 8\r
- mov Pico_mcd->cdc.DAC.N, esi\r
- mov val, ax\r
- }\r
-#endif\r
}\r
\r
\r
-void CDC_Update_Header(void)\r
+PICO_INTERNAL void CDC_Update_Header(void)\r
{\r
if (Pico_mcd->cdc.CTRL.B.B1 & 0x01) // Sub-Header wanted ?\r
{\r
}\r
\r
\r
-unsigned char CDC_Read_Reg(void)\r
+PICO_INTERNAL unsigned char CDC_Read_Reg(void)\r
{\r
unsigned char ret;\r
\r
}\r
\r
\r
-void CDC_Write_Reg(unsigned char Data)\r
+PICO_INTERNAL void CDC_Write_Reg(unsigned char Data)\r
{\r
cdprintf("CDC write reg%02d = %.2X", Pico_mcd->s68k_regs[5] & 0xF, Data);\r
\r
return d + (d >> 8);\r
}\r
\r
-void CDD_Export_Status(void)\r
+PICO_INTERNAL void CDD_Export_Status(void)\r
{\r
unsigned int csum;\r
\r
}\r
\r
\r
-void CDD_Import_Command(void)\r
+PICO_INTERNAL void CDD_Import_Command(void)\r
{\r
// cdprintf("CDD importing command\n");\r
cdprintf("in: Command=%.4X, Minute=%.4X, Second=%.4X, Frame=%.4X Checksum=%.4X",\r
notaz.gp2x.de / picodrive.git / blobdiff