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https://github.com/RaySollium99/picodrive.git
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ISO loading, menus, LEDs
git-svn-id: file:///home/notaz/opt/svn/PicoDrive@16 be3aeb3a-fb24-0410-a615-afba39da0efa
This commit is contained in:
notaz
parent
d0d47c5be3
commit
bf098bc532
15 changed files with 914 additions and 295 deletions
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@ -1,13 +1,11 @@
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#if 0
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#include <stdio.h>
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#include <windows.h>
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#include "misc.h"
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#include "lc89510.h"
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#include "cd_aspi.h"
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#include "Star_68k.h"
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#include "mem_S68k.h"
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#include "pcm.h"
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#endif
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/***********************************************************
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* *
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* This source is taken from the Gens project *
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* Written by Stéphane Dallongeville *
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* Copyright (c) 2002 by Stéphane Dallongeville *
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* Modified/adapted for Picodrive by notaz, 2007 *
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* *
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***********************************************************/
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#include "../PicoInt.h"
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@ -18,7 +16,7 @@
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#define CDC_DMA_SPEED 256
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int CDC_Decode_Reg_Read;
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static int Status_CDC; // internal status
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static int Status_CDC; // internal status (TODO: 2 context?)
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static void CDD_Reset(void)
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@ -73,129 +71,90 @@ void LC89510_Reset(void)
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Pico_mcd->cdc.Stop_Watch = 0;
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}
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#if 0 // TODO
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void Update_CDC_TRansfer(void)
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void Update_CDC_TRansfer(int which)
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{
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unsigned int i, dep, lenght, add_dest;
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unsigned char *dest;
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if ((Status_CDC & 0x08) == 0) return;
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switch(Pico_mcd->s68k_regs[4] & 7)
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{
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case 0x0200: // MAIN CPU
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case 0x0300: // SUB CPU
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Pico_mcd->s68k_regs[4] |= 0x40; // Data ready in host port
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return;
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case 0x0400: // PCM RAM
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dest = (unsigned char *) Ram_PCM;
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x03FF) << 2) + PCM_Chip.Bank;
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add_dest = 2;
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break;
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case 0x0500: // PRG RAM
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dest = (unsigned char *) Ram_Prg;
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dep = (Pico_mcd->cdc.DMA_Adr & 0xFFFF) << 3;
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add_dest = 2;
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// cdprintf("DMA transfer PRG RAM : adr = %.8X ", dep);
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break;
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case 0x0700: // WORD RAM
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if (Ram_Word_State >= 2)
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{
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dest = (unsigned char *) Ram_Word_1M;
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add_dest = 2;
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if (Ram_Word_State & 1) dep = ((Pico_mcd->cdc.DMA_Adr & 0x3FFF) << 3);
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else dep = ((Pico_mcd->cdc.DMA_Adr & 0x3FFF) << 3) + 0x20000;
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}
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else
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{
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dest = (unsigned char *) Ram_Word_2M;
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x7FFF) << 3);
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add_dest = 2;
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}
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break;
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default:
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return;
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}
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unsigned int dep, length, len;
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unsigned short *dest;
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unsigned char *src;
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if (Pico_mcd->cdc.DBC.N <= (CDC_DMA_SPEED * 2))
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{
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lenght = (Pico_mcd->cdc.DBC.N + 1) >> 1;
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Status_CDC &= ~0x08; // Last transfer
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Pico_mcd->s68k_regs[4] |= 0x80; // End data transfer
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Pico_mcd->s68k_regs[4] &= ~0x40; // no more data ready
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Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress
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length = (Pico_mcd->cdc.DBC.N + 1) >> 1;
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Status_CDC &= ~0x08; // Last transfer
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Pico_mcd->s68k_regs[4] |= 0x80; // End data transfer
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Pico_mcd->s68k_regs[4] &= ~0x40; // no more data ready
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Pico_mcd->cdc.IFSTAT |= 0x08; // No more data transfer in progress
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if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Trasnfer End Interrupt Enable ?
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if (Pico_mcd->cdc.IFCTRL & 0x40) // DTEIEN = Data Trasnfer End Interrupt Enable ?
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{
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Pico_mcd->cdc.IFSTAT &= ~0x40;
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if (Int_Mask_S68K & 0x20) sub68k_interrupt(5, -1);
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cdprintf("CDC - DTE interrupt\n");
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if (Pico_mcd->s68k_regs[0x33] & (1<<5))
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{
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dprintf("cdc DTE irq 5");
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SekInterruptS68k(5);
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}
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}
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}
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else lenght = CDC_DMA_SPEED;
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// cdprintf("DMA lenght = %.4X\n", lenght);
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else length = CDC_DMA_SPEED;
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if ((Pico_mcd->s68k_regs[4] & 7) == 4) // PCM DMA
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// TODO: dst bounds checking? DAC.N alignment?
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src = Pico_mcd->cdc.Buffer + Pico_mcd->cdc.DAC.N;
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if (which == 7) // WORD RAM
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{
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__asm
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if (Pico_mcd->s68k_regs[3] & 4)
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{
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mov ecx, lenght
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mov edi, dest
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lea esi, Pico_mcd->cdc.Buffer
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add edi, dep
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add esi, Pico_mcd->cdc.DAC.N
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mov ebx, add_dest
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x3FFF) << 3);
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cdprintf("CD DMA # %04x -> word_ram1M # %06x, len=%i",
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Pico_mcd->cdc.DAC.N, dep, length);
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Loop_DMA_PCM:
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mov ax, [esi]
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add esi, 2
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mov [edi], ax
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add edi, ebx
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dec ecx
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jnz Loop_DMA_PCM
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x3FFF) << 4);
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if (!(Pico_mcd->s68k_regs[3]&1)) dep += 2;
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dest = (unsigned short *) (Pico_mcd->word_ram + dep);
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for (len = length; len > 0; len--, src+=2, dest+=2)
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*dest = (src[0]<<8) | src[1];
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}
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else
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{
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x7FFF) << 3);
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cdprintf("CD DMA # %04x -> word_ram2M # %06x, len=%i",
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Pico_mcd->cdc.DAC.N, dep, length);
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dest = (unsigned short *) (Pico_mcd->word_ram + dep);
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lenght <<= 1;
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Pico_mcd->cdc.DMA_Adr += lenght >> 2;
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for (len = length; len > 0; len--, src+=2, dest++)
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*dest = (src[0]<<8) | src[1];
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}
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}
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else // OTHER DMA
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else if (which == 4) // PCM RAM
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{
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__asm
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{
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mov ecx, lenght
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mov edi, dest
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lea esi, Pico_mcd->cdc.Buffer
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add edi, dep
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add esi, Pico_mcd->cdc.DAC.N
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mov ebx, add_dest
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#if 0
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dest = (unsigned char *) Ram_PCM;
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dep = ((Pico_mcd->cdc.DMA_Adr & 0x03FF) << 2) + PCM_Chip.Bank;
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#else
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cdprintf("TODO: PCM Dma");
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#endif
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}
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else if (which == 5) // PRG RAM
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{
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dep = (Pico_mcd->cdc.DMA_Adr & 0xFFFF) << 3;
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dest = (unsigned short *) (Pico_mcd->prg_ram + dep);
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cdprintf("CD DMA # %04x -> prg_ram # %06x, len=%i",
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Pico_mcd->cdc.DAC.N, dep, length);
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Loop_DMA:
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mov ax, [esi]
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add esi, 2
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rol ax, 8
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mov [edi], ax
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add edi, ebx
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dec ecx
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jnz Loop_DMA
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}
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lenght <<= 1;
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Pico_mcd->cdc.DMA_Adr += lenght >> 3;
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for (len = length; len > 0; len--, src+=2, dest++)
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*dest = (src[0]<<8) | src[1];
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}
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Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + lenght) & 0xFFFF;
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if (Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= lenght;
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length <<= 1;
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Pico_mcd->cdc.DAC.N = (Pico_mcd->cdc.DAC.N + length) & 0xFFFF;
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if (Status_CDC & 0x08) Pico_mcd->cdc.DBC.N -= length;
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else Pico_mcd->cdc.DBC.N = 0;
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}
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#endif
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unsigned short Read_CDC_Host(int is_sub)
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@ -592,7 +551,7 @@ void CDD_Import_Command(void)
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Get_Current_Track_CDD_c22();
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break;
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case 0x3: // get total lenght (MSF format)
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case 0x3: // get total length (MSF format)
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Pico_mcd->cdd.Status = (Pico_mcd->cdd.Status & 0xFF00) | 3;
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Get_Total_Lenght_CDD_c23();
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break;
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