fix to coolboy
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4fd8715890
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e59106e35b
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@ -24,7 +24,6 @@
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* 6001 (xxx354x)
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* 6001 (xxx354x)
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* 6002 = 0
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* 6002 = 0
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* 6003 = 0
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* 6003 = 0
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* 6003 = 0
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*
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*
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* hardware tested logic, don't try to understand lol
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* hardware tested logic, don't try to understand lol
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*/
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*/
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@ -42,7 +41,12 @@ static void COOLBOYCW(uint32 A, uint8 V) {
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case 0x0C00: V &= 0x7F; break;
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case 0x0C00: V &= 0x7F; break;
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}
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}
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}
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}
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setchr8((((EXPREGS[2] & 0x0F) | ((V & 0x80) >> 3)) & (mask >> 3)) | ((((EXPREGS[0] & 0x08) << 4) & ~mask) >> 3));
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// Highest bit goes from MMC3 registers when EXPREGS[3]&0x80==0 or from EXPREGS[0]&0x08 otherwise
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setchr1(A,
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(V & 0x80 & mask) | ((((EXPREGS[0] & 0x08) << 4) & (mask ^ 0xff))) // 7th bit
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| ((EXPREGS[2] & 0x0F) << 3) // 6-3 bits
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| ((A >> 10) & 7) // 2-0 bits
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);
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} else {
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} else {
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if (EXPREGS[3] & 0x40) { // Weird mode, again
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if (EXPREGS[3] & 0x40) { // Weird mode, again
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int cbase = (MMC3_cmd & 0x80) << 5;
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int cbase = (MMC3_cmd & 0x80) << 5;
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@ -83,9 +87,9 @@ static void COOLBOYPW(uint32 A, uint8 V) {
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else { // NROM mode
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else { // NROM mode
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mask &= 0xF0;
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mask &= 0xF0;
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uint8 emask;
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uint8 emask;
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if (!(EXPREGS[1] & 2)) // 4kb mode, 0xC000-0xFFFF is same as 0x8000-0xBFFF
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if (!(EXPREGS[1] & 2)) // 16kb mode, 0xC000-0xFFFF is same as 0x8000-0xBFFF
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emask = EXPREGS[3] & 0x0E;
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emask = EXPREGS[3] & 0x0E;
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else // 8kb mode, using second-last bank
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else // 32kb mode, using second-last bank
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emask = (EXPREGS[3] & 0x0C) | ((A >= 0xC000) ? 2 : 0);
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emask = (EXPREGS[3] & 0x0C) | ((A >= 0xC000) ? 2 : 0);
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emask |= (A >> 13) & 1; // does not depends on MMC3_cmd&0x40
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emask |= (A >> 13) & 1; // does not depends on MMC3_cmd&0x40
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setprg8(A, (((base << 4) & ~mask) | (V & mask) | emask));
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setprg8(A, (((base << 4) & ~mask) | (V & mask) | emask));
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@ -134,4 +138,4 @@ void COOLBOY_Init(CartInfo *info) {
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info->Power = COOLBOYPower;
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info->Power = COOLBOYPower;
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info->Reset = COOLBOYReset;
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info->Reset = COOLBOYReset;
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AddExState(EXPREGS, 4, 0, "EXPR");
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AddExState(EXPREGS, 4, 0, "EXPR");
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}
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}
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