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| author | notaz | 2015-02-05 02:36:58 +0200 |
|---|---|---|
| committer | notaz | 2015-02-05 02:36:58 +0200 |
| commit | fc4803bdc2c9840a007c60e422fb0531107b80f2 (patch) | |
| tree | 5d7ffe5024e7db6bf63f455586521cbcc26e8422 /libpcsxcore/mdec.c | |
| parent | 58ebb94c13df061762a7aca78e52f066339d9610 (diff) | |
| download | pcsx_rearmed-fc4803bdc2c9840a007c60e422fb0531107b80f2.tar.gz pcsx_rearmed-fc4803bdc2c9840a007c60e422fb0531107b80f2.tar.bz2 pcsx_rearmed-fc4803bdc2c9840a007c60e422fb0531107b80f2.zip | |
dma: some timing hacks
untested
Diffstat (limited to 'libpcsxcore/mdec.c')
| -rw-r--r-- | libpcsxcore/mdec.c | 12 |
1 files changed, 5 insertions, 7 deletions
diff --git a/libpcsxcore/mdec.c b/libpcsxcore/mdec.c index bed4e53..d6c7ab6 100644 --- a/libpcsxcore/mdec.c +++ b/libpcsxcore/mdec.c @@ -32,7 +32,7 @@ * 320x240x16@60Hz => 9.216 MB/s * so 2.0 to 4.0 should be fine. */ -#define MDEC_BIAS 2.0f +#define MDEC_BIAS 2 #define DSIZE 8 #define DSIZE2 (DSIZE * DSIZE) @@ -545,15 +545,13 @@ void psxDma1(u32 adr, u32 bcr, u32 chcr) { int blk[DSIZE2 * 6]; u8 * image; int size; - int dmacnt; + u32 words; if (chcr != 0x01000200) return; - size = (bcr >> 16) * (bcr & 0xffff); + words = (bcr >> 16) * (bcr & 0xffff); /* size in byte */ - size *= 4; - /* I guess the memory speed is limitating */ - dmacnt = size; + size = words * 4; if (!(mdec.reg1 & MDEC1_BUSY)) { /* add to pending */ @@ -625,7 +623,7 @@ void psxDma1(u32 adr, u32 bcr, u32 chcr) { } /* define the power of mdec */ - MDECOUTDMA_INT((int) ((dmacnt* MDEC_BIAS))); + MDECOUTDMA_INT(words * MDEC_BIAS); } } |