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More mapper updates (#607)

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* M061: Add CHR-ROM variant.

* M227: Make DIP switch change only apply to submapper 1

* M242: Only assume DIP/solder pad read when A0-A7 are zero, corrects ET-187 and Xing-2462. Initialize M227's and M242's DIP switch setting on Hard Reset.

* M052: Support CHR-RAM-less variant of submapper 14.

* M364: Correct the outer bank register's address mask, for LT-953 multicart.

* M047: Supprt larger-sized multicarts using a compatible PCB. Reset to menu.

* M360: Add submapper 1.

* M221: Rewrite, add submapper 1 variant.

* M288: Remove bank masks to allow for already-existing larger cartridges.

* M411: Add submappers.

* M417: Add submapper 1.

* M115: Add multicart functionalities.

* M201: Simplify and correct the power-on value. CF-043, mentioned in the source code comment, needs no submapper; just a correct header with Horizontal mirroring.

* M200: Correct the power-on value.

* M432: Add submappers to distinguish three variants.

* Add mapper 412.

---------

Co-authored-by: NewRisingSun <8vytz1+dhp372pv94ebg@sharklasers.com>
This commit is contained in:
NRS-NewRisingSun
2024-06-04 01:51:29 +02:00
committed by GitHub
parent c970bcc2b5
commit 8e5651a1fa
11 changed files with 261 additions and 136 deletions
Download Patch File Download Diff File Expand all files Collapse all files

17
src/boards/417.c
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@@ -25,6 +25,7 @@ static uint8 creg[8];
static uint8 nt[4];
static uint8 IRQa;
static uint16 IRQCount;
static uint8 submapper;
static SFORMAT StateRegs[] = {
{ preg, 4, "PREG" },
@@ -48,11 +49,18 @@ static void Sync(void) {
static DECLFW(M417Write) {
switch ((A >> 4) & 7) {
case 0: preg[A & 3] = V; Sync(); break;
case 1: creg[0 | (A & 3)] = V; Sync(); break;
case 1: creg[0 | (A & 3)] = V;
if (submapper ==1) nt[A & 3] =V >>7;
Sync();
break;
case 2: creg[4 | (A & 3)] = V; Sync(); break;break;
case 3: IRQCount = 0; IRQa = 1; break;
case 4: IRQa = 0; X6502_IRQEnd(FCEU_IQEXT); break;
case 5: nt[A & 3] = V; Sync(); break;
case 5: if (submapper ==0) {
nt[A & 3] = V;
Sync();
}
break;
}
}
@@ -64,7 +72,7 @@ static void M417Power(void) {
static void M417IRQHook(int a) {
IRQCount += a;
if (IRQa && IRQCount > 1024)
if (IRQa && IRQCount > (submapper ==1? 4096: 1024))
X6502_IRQBegin(FCEU_IQEXT);
}
@@ -73,8 +81,9 @@ static void StateRestore(int version) {
}
void Mapper417_Init(CartInfo *info) {
submapper =info->submapper;
info->Power = M417Power;
MapIRQHook = M417IRQHook;
MapIRQHook = M417IRQHook;
GameStateRestore = StateRestore;
AddExState(&StateRegs, ~0, 0, 0);
}