From f3454d9c212d324cfb78000ab3a468e653c190b2 Mon Sep 17 00:00:00 2001 From: Mike Pavone Date: Mon, 31 Dec 2012 18:22:25 -0800 Subject: Fix DMA fills to VRAM --- vdp.c | 11 ++--------- 1 file changed, 2 insertions(+), 9 deletions(-) (limited to 'vdp.c') diff --git a/vdp.c b/vdp.c index 3c28852..045192f 100644 --- a/vdp.c +++ b/vdp.c @@ -219,15 +219,8 @@ void external_slot(vdp_context * context) { case VRAM_WRITE: //Charles MacDonald's VDP doc says that the low byte gets written first - //this doesn't make a lot of sense to me, but until I've had a change to - //verify it myself, I'll assume it's true - if (context->flags & FLAG_DMA_PROG) { - context->vdpmem[context->address ^ 1] = context->dma_val >> 8; - context->flags &= ~FLAG_DMA_PROG; - } else { - context->vdpmem[context->address] = context->dma_val; - context->flags |= FLAG_DMA_PROG; - } + context->vdpmem[context->address] = context->dma_val; + context->dma_val = (context->dma_val << 8) | ((context->dma_val >> 8) & 0xFF); break; case CRAM_WRITE: context->cram[(context->address/2) & (CRAM_SIZE-1)] = context->dma_val; -- cgit v1.2.3