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Backport r180 and r181 - EH8813A fixes

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[r180] UNIF EH8813A - fixed inplementation
[r181] UNIF EH8813A - hw switch added
This commit is contained in:
Oggom
2015-09-08 23:07:01 +02:00
parent ed1d1068ab
commit 247e7b4969
1 changed files with 13 additions and 4 deletions
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17
src/boards/eh8813a.c
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@@ -21,17 +21,18 @@
#include "mapinc.h" #include "mapinc.h"
static uint16 addrlatch; static uint16 addrlatch;
static uint8 datalatch; static uint8 datalatch, hw_mode;
static SFORMAT StateRegs[] = static SFORMAT StateRegs[] =
{ {
{ &addrlatch, 2, "ADRL" }, { &addrlatch, 2, "ADRL" },
{ &datalatch, 1, "DATL" }, { &datalatch, 1, "DATL" },
{ &hw_mode, 1, "HWMO" },
{ 0 } { 0 }
}; };
static void Sync(void) { static void Sync(void) {
uint8 prg = (addrlatch & 7) | ((addrlatch & 0x40) >> 3); uint8 prg = (addrlatch & 7);
setchr8(datalatch); setchr8(datalatch);
if(addrlatch & 0x80) { if(addrlatch & 0x80) {
setprg16(0x8000,prg); setprg16(0x8000,prg);
@@ -50,15 +51,23 @@ static DECLFW(EH8813AWrite) {
Sync(); Sync();
} }
static DECLFR(EH8813ARead) {
if (addrlatch & 0x40)
A= (A & 0xFFF0) + hw_mode;
return CartBR(A);
}
static void EH8813APower(void) { static void EH8813APower(void) {
addrlatch = datalatch = 0; addrlatch = datalatch = hw_mode = 0;
Sync(); Sync();
SetReadHandler(0x8000, 0xFFFF, CartBR); SetReadHandler(0x8000, 0xFFFF, EH8813ARead);
SetWriteHandler(0x8000, 0xFFFF, EH8813AWrite); SetWriteHandler(0x8000, 0xFFFF, EH8813AWrite);
} }
static void EH8813AReset(void) { static void EH8813AReset(void) {
addrlatch = datalatch = 0; addrlatch = datalatch = 0;
hw_mode = (hw_mode + 1) & 0xF;
FCEU_printf("Hardware Switch is %01X\n", hw_mode);
Sync(); Sync();
} }