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cheapocabra forgot to initialize some of flash state, implemented software ID

This commit is contained in:
rainwarrior 2016-08-31 09:38:15 +00:00
parent c27986d340
commit b0500e4925
1 changed files with 25 additions and 3 deletions
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28
trunk/src/boards/cheapocabra.cpp
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@ -28,7 +28,6 @@
//
// Notes:
// - CHR-RAM for nametables maps to $3000-3FFF as well, but FCEUX internally mirrors to 4k?
// - Does not implement software ID mode for flash ROM
#include "mapinc.h"
#include "../ines.h"
@ -83,6 +82,23 @@ static DECLFW(M111Write) {
}
}
static DECLFR(M111FlashID)
{
if (A == 0x8000) return 0xBF;
else if (A == 0x8001) return 0xB7;
else return CartBR(A);
}
void M111FlashIDEnter()
{
SetReadHandler(0x8000,0x8001,M111FlashID);
}
void M111FlashIDExit()
{
SetReadHandler(0x8000,0x8001,CartBR);
}
static DECLFW(M111Flash) {
if (A < 0x8000 || A > 0xFFFF) return;
@ -106,6 +122,10 @@ static DECLFW(M111Flash) {
flash_mode = FLASH_MODE_COMMAND;
flash_sequence = 0;
}
else if (V == 0xF0)
{
M111FlashIDExit();
}
break;
case FLASH_MODE_COMMAND:
if (flash_sequence == 0)
@ -125,8 +145,8 @@ static DECLFW(M111Flash) {
default: flash_mode = FLASH_MODE_READY; break;
case 0xA0: flash_mode = FLASH_MODE_BYTE_WRITE; break;
case 0x80: flash_mode = FLASH_MODE_ERASE; break;
// 0x90 = Software ID Entry (not implemented)
// 0xF0 = Software ID Exit (not implemented)
case 0x90: M111FlashIDEnter(); flash_mode = FLASH_MODE_READY; break;
case 0xF0: M111FlashIDExit(); flash_mode = FLASH_MODE_READY; break;
}
}
else
@ -182,6 +202,8 @@ static void M111Power(void) {
if (flash)
{
flash_mode = 0;
flash_sequence = 0;
SetWriteHandler(0x8000, 0xFFFF, M111Flash);
}
}