Mercurial > repos > blastem
changeset 475:50e0cb475294
Don't allow register writes to regs above when in Mode 4
author | Mike Pavone <pavone@retrodev.com> |
---|---|
date | Sun, 15 Sep 2013 23:40:18 -0700 |
parents | e128e55710bd |
children | 5d7bc113653b |
files | vdp.c |
diffstat | 1 files changed, 1 insertions(+), 1 deletions(-) [+] |
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--- a/vdp.c Sun Sep 15 23:33:24 2013 -0700 +++ b/vdp.c Sun Sep 15 23:40:18 2013 -0700 @@ -1477,7 +1477,7 @@ if ((value & 0xC000) == 0x8000) { //Register write uint8_t reg = (value >> 8) & 0x1F; - if (reg < VDP_REGS) { + if (reg < (context->regs[REG_MODE_2] & BIT_MODE_5 ? VDP_REGS : 0xA)) { //printf("register %d set to %X\n", reg, value & 0xFF); context->regs[reg] = value; if (reg == REG_MODE_2) {