Mercurial > repos > blastem
changeset 318:789f2f5f2277
Implement hblank flag in status register
| author | Mike Pavone <pavone@retrodev.com> |
|---|---|
| date | Fri, 10 May 2013 23:16:06 -0700 |
| parents | e5e8b48ad157 |
| children | 0bcab0475a7f |
| files | vdp.c |
| diffstat | 1 files changed, 9 insertions(+), 5 deletions(-) [+] |
line wrap: on
line diff
--- a/vdp.c Fri May 10 22:57:56 2013 -0700 +++ b/vdp.c Fri May 10 23:16:06 2013 -0700 @@ -1193,17 +1193,21 @@ if (context->flags2 & FLAG2_VINT_PENDING) { value |- 0x80; } + 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)) { + value |= 0x8; + } + if (linecyc < (context->latched_mode & BIT_H40 ? (148 + 61) * 4 : ( + 46) * 5)) { + value |= 0x4; + } if (context->flags & FLAG_DMA_RUN) { value |= 0x2; } - uint32_t line= context->cycles / MCLKS_LINE; - if (line >= (context->latched_mode & BIT_PAL ? PAL_ACTIVE : NTSC_ACTIVE)) { - value |= 0x8; - } if (context->latched_mode & BIT_PAL) {//Not sure about this, need to verify value |= 0x1; } - //TODO: Lots of other bits in status port + //TODO: Sprite overflow, sprite collision, odd frame flag return value; }