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Fixed video register comment layout, no credit please

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This commit is contained in:
Angelo Salese 2009-11-24 15:44:12 +00:00
parent a7a09f29d5
commit 70c71abae8
1 changed files with 22 additions and 23 deletions
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45
src/mame/video/hng64.c
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@ -1540,32 +1540,31 @@ static void hng64_drawtilemap(running_machine* machine, bitmap_t *bitmap, const
* Video Regs Format
* ------------------
*
* UINT32 | Bits | Use
* | 3322 2222 2222 1111 1111 11 |
* -------+-1098-7654-3210-9876-5432-1098-7654-3210-+----------------
* 0 | ---- -C-- ---- -??Z ---- ---- ---- ---- | unknown (scroll control?) C = Global Complex zoom, ? = Always Set?, Z = Global Zoom Disable?
0000 0011 - road edge alt 1
0000 0111 - road edge alt 2
* UINT32 | Bytes | Use
* -------+-76543210-+----------------
* 1 | xxxx---- | looks like it's 0001 most (all) of the time - turns off in buriki intro
* 1 | ----oooo | unknown - always seems to be 0000 (fatfurwa)
* 2 | xxxx---- | tilemap0 per layer flags
* 2 | ----xxxx | tilemap1 per layer flags
* 3 | xxxx---- | tilemap2 per layer flags
* 3 | ----xxxx | tilemap3 per layer flags
* 4 | xxxx---- | tilemap0 offset into tilemap RAM?
* 4 | ----xxxx | tilemap1 offset into tilemap RAM
* 5 | xxxx---- | tilemap3 offset into tilemap RAM
* 5 | ----xxxx | tilemap4 offset into tilemap RAM?
* 6 | oooooooo | unknown - always seems to be 000001ff (fatfurwa)
* 7 | oooooooo | unknown - always seems to be 000001ff (fatfurwa)
* 8 | oooooooo | unknown - always seems to be 80008000 (fatfurwa)
* 9 | oooooooo | unknown - always seems to be 00000000 (fatfurwa)
* a | oooooooo | unknown - always seems to be 00000000 (fatfurwa)
* b | mmmmmmmm | auto animation mask for tilemaps, - use these bits from the original tile number
* c | xxxxxxxx | auto animation bits for tilemaps, - merge in these bits to auto animate the tilemap
* d | oooooooo | not used ??
* e | oooooooo | not used ??
* 1 | xxxx xxxx xxxx xxxx ---- ---- ---- ---- | looks like it's 0001 most (all) of the time - turns off in buriki intro
* 1 | ---- ---- ---- ---- oooo oooo oooo oooo | unknown - always seems to be 0000 (fatfurwa)
* 2 | xxxx xxxx xxxx xxxx ---- ---- ---- ---- | tilemap0 per layer flags
* 2 | ---- ---- ---- ---- xxxx xxxx xxxx xxxx | tilemap1 per layer flags
* 3 | xxxx xxxx xxxx xxxx ---- ---- ---- ---- | tilemap2 per layer flags
* 3 | ---- ---- ---- ---- xxxx xxxx xxxx xxxx | tilemap3 per layer flags
* 4 | xxxx xxxx xxxx xxxx ---- ---- ---- ---- | tilemap0 offset into tilemap RAM?
* 4 | ---- ---- ---- ---- xxxx xxxx xxxx xxxx | tilemap1 offset into tilemap RAM
* 5 | xxxx xxxx xxxx xxxx ---- ---- ---- ---- | tilemap3 offset into tilemap RAM
* 5 | ---- ---- ---- ---- xxxx xxxx xxxx xxxx | tilemap4 offset into tilemap RAM?
* 6 | oooo oooo oooo oooo oooo oooo oooo oooo | unknown - always seems to be 000001ff (fatfurwa)
* 7 | oooo oooo oooo oooo oooo oooo oooo oooo | unknown - always seems to be 000001ff (fatfurwa)
* 8 | oooo oooo oooo oooo oooo oooo oooo oooo | unknown - always seems to be 80008000 (fatfurwa)
* 9 | oooo oooo oooo oooo oooo oooo oooo oooo | unknown - always seems to be 00000000 (fatfurwa)
* a | oooo oooo oooo oooo oooo oooo oooo oooo | unknown - always seems to be 00000000 (fatfurwa)
* b | mmmm mmmm mmmm mmmm mmmm mmmm mmmm mmmm | auto animation mask for tilemaps, - use these bits from the original tile number
* c | xxxx xxxx xxxx xxxx xxxx xxxx xxxx xxxx | auto animation bits for tilemaps, - merge in these bits to auto animate the tilemap
* d | oooo oooo oooo oooo oooo oooo oooo oooo | not used ??
* e | oooo oooo oooo oooo oooo oooo oooo oooo | not used ??
per tile regs (0x2/0x3)