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NES 2.0: Add preliminary support for iNES 2.0 format

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Currently reads and sets the following:
- mapper number up to 4095, prg rom size, chr rom size
- chr ram (volatile + non-volatile), region (ntsc, pal, dendy or multi-region)

todo: submapper handling, w-ram and prg nvram at least...
This commit is contained in:
retro-wertz
2019-07-05 22:46:22 +08:00
parent bb8aef82c1
commit 51199e59d7
5 changed files with 176 additions and 90 deletions
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6
src/boards/unrom512.c
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@@ -217,9 +217,9 @@ void UNROM512_Init(CartInfo *info) {
flash_bank = 0;
flash_save = info->battery;
if (info->vram_size == 8192)
if (info->chrRam == 8192)
chrram_mask = 0;
else if (info->vram_size == 16384)
else if (info->chrRam == 16384)
chrram_mask = 0x20;
else
chrram_mask = 0x60;
@@ -236,7 +236,7 @@ void UNROM512_Init(CartInfo *info) {
SetupCartMirroring(MI_0, 0, NULL);
break;
case 3: /* hard four screen, last 8k of 32k RAM (flags: 4-screen + vertical) */
SetupCartMirroring(4, 1, VROM + (info->vram_size - 8192));
SetupCartMirroring(4, 1, VROM + (info->chrRam - 8192));
break;
}
bus_conflict = !info->battery;