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Add mapper 487 submapper 1.

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This commit is contained in:
NewRisingSun
2026-04-01 00:26:20 +02:00
parent d20e1cf637
commit e81b5e0370
1 changed files with 14 additions and 2 deletions
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16
src/boards/487.c
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@@ -22,6 +22,7 @@
#include "mapinc.h" #include "mapinc.h"
static uint8 reg[2]; static uint8 reg[2];
static uint8 submapper;
static SFORMAT StateRegs[] ={ static SFORMAT StateRegs[] ={
{ reg, 2, "REGS" }, { reg, 2, "REGS" },
@@ -41,7 +42,16 @@ static void Sync(void) {
setmirror(reg[1] &0x80? MI_H: MI_V); setmirror(reg[1] &0x80? MI_H: MI_V);
} }
static DECLFW(WriteNINA) { static DECLFW(WriteNINA_Prototype) {
if (A &0x200)
reg[1] =V;
else
if (A &0x100)
reg[0] =V;
Sync();
}
static DECLFW(WriteNINA08) {
if (A &0x100) { if (A &0x100) {
if (A &0x080) /* Second register is always writable */ if (A &0x080) /* Second register is always writable */
reg[1] =V; reg[1] =V;
@@ -65,7 +75,7 @@ static void Power(void) {
reg[1] = 0; reg[1] = 0;
Sync(); Sync();
SetWriteHandler(0x8000, 0xFFFF, WriteColorDreams); SetWriteHandler(0x8000, 0xFFFF, WriteColorDreams);
SetWriteHandler(0x4100, 0x7FFF, WriteNINA); SetWriteHandler(0x4100, 0x7FFF, submapper == 1? WriteNINA_Prototype: WriteNINA08);
SetReadHandler(0x8000, 0xFFFF, CartBR); SetReadHandler(0x8000, 0xFFFF, CartBR);
} }
@@ -74,12 +84,14 @@ static void StateRestore(int version) {
} }
static void Reset(void) { static void Reset(void) {
RAM[0x000] =0; /* Bug in Maxivision 30-in-1 1991-12-14 version */
reg[0] = 0; reg[0] = 0;
reg[1] = 0; reg[1] = 0;
Sync(); Sync();
} }
void Mapper487_Init(CartInfo *info) { void Mapper487_Init(CartInfo *info) {
submapper = info->submapper;
info->Power = Power; info->Power = Power;
info->Reset = Reset; info->Reset = Reset;
AddExState(&StateRegs, ~0, 0, 0); AddExState(&StateRegs, ~0, 0, 0);