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mapper 15 chr protection implemented

This commit is contained in:
g0me3 2019-10-01 22:01:30 +03:00
parent 00beb14f16
commit 8b1c405d95
1 changed files with 17 additions and 6 deletions
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23
src/boards/15.cpp
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@ -35,17 +35,17 @@ static SFORMAT StateRegs[] =
static void Sync(void) {
int i;
setmirror(((latched >> 6) & 1) ^ 1);
switch (latchea) {
case 0x8000:
switch (latchea & 3) {
case 0:
for (i = 0; i < 4; i++)
setprg8(0x8000 + (i << 13), (((latched & 0x7F) << 1) + i) ^ (latched >> 7));
break;
case 0x8002:
case 2:
for (i = 0; i < 4; i++)
setprg8(0x8000 + (i << 13), ((latched & 0x7F) << 1) + (latched >> 7));
break;
case 0x8001:
case 0x8003:
case 1:
case 3:
for (i = 0; i < 4; i++) {
unsigned int b;
b = latched & 0x7F;
@ -60,6 +60,18 @@ static void Sync(void) {
static DECLFW(M15Write) {
latchea = A;
latched = V;
switch (latchea & 3) {
case 0:
case 3:
SetupCartCHRMapping(0, CHRptr[0], 0x2000, 0);
setchr8(0);
break;
case 1:
case 2:
SetupCartCHRMapping(0, CHRptr[0], 0x2000, 1);
setchr8(0);
break;
}
Sync();
}
@ -70,7 +82,6 @@ static void StateRestore(int version) {
static void M15Power(void) {
latchea = 0x8000;
latched = 0;
setchr8(0);
setprg8r(0x10, 0x6000, 0);
SetReadHandler(0x6000, 0x7FFF, CartBR);
SetWriteHandler(0x6000, 0x7FFF, CartBW);