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authorMike Pavone <pavone@retrodev.com>2013-09-08 20:48:33 -0700
committerMike Pavone <pavone@retrodev.com>2013-09-08 20:48:33 -0700
commit773d8bb91c3d4684e3e6a76e8584e6a97eda31ec (patch)
tree45b5d084a2b4fa8e0529147e7b78ec3de8880fcd
parent1b9e30c264d0af85666d89e8d62d054d847d2628 (diff)
Revert change to VBLANK flag timing based on new direct color DMA test
-rw-r--r--vdp.c3
1 files changed, 2 insertions, 1 deletions
diff --git a/vdp.c b/vdp.c
index 35b0acb..829cb23 100644
--- a/vdp.c
+++ b/vdp.c
@@ -1564,7 +1564,7 @@ uint16_t vdp_control_port_read(vdp_context * context)
}
uint32_t line= context->cycles / MCLKS_LINE;
uint32_t linecyc = context->cycles % MCLKS_LINE;
- if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE) || context->cycles < (context->latched_mode & BIT_H40 ? 16*4 : 16*5)) {
+ if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE)) {
value |= 0x8;
}
if (linecyc < (context->latched_mode & BIT_H40 ? HBLANK_CLEAR_H40 : HBLANK_CLEAR_H32)) {
@@ -1576,6 +1576,7 @@ uint16_t vdp_control_port_read(vdp_context * context)
if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify
value |= 0x1;
}
+ //printf("status read at cycle %d returned %X\n", context->cycles, value);
//TODO: Sprite overflow, sprite collision, odd frame flag
return value;
}