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David Haywood 2013-03-02 17:45:01 +00:00
parent bf0f6933f4
commit bd4a2c3e3a
1 changed files with 77 additions and 1 deletions
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78
src/mame/drivers/gunpey.c
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@ -565,7 +565,7 @@ TIMER_CALLBACK_MEMBER(gunpey_state::blitter_end)
gunpey_irq_check(4);
}
//#define SHOW_COMPRESSED_DATA_DEBUG
#define SHOW_COMPRESSED_DATA_DEBUG
WRITE8_MEMBER(gunpey_state::gunpey_blitter_w)
{
@ -616,6 +616,82 @@ WRITE8_MEMBER(gunpey_state::gunpey_blitter_w)
//int color = space.machine().rand()&0x1f;
/* the two parts of the banpresto logo have compressed data looking like this for the white fill area
the first part of this sprite covers the first 256 pixels of the screen, the second part covers the
right-most 64 pixels. the second part reaches real data sooner because it has to compress less blank
bytes due to only covering a 64-pixel span.
there is clearly a repeating pattern
(srcwidth) byte just determines how the compressed data is organized in ROM and is unrelated to the
decompression.
left part
data: srcwide(11)
a8 68 cd 9a 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
...
02 08 00 8c|06 06 16 05|3f 00 00 01|10 00 ef 00
data: srcwide(05)
a8 68 cd 9a 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 69
d3 a6 4d 9b 36 6d da b4 e9
23 95 0a 19 a6 52 8d 0c 54
ce 6a b9 ac 2a 6e 53 0c 55
11 b0 55 a1 ca 2b 30 81 71
15 b7 1b 65 2a ae e1 02 c2
ca bb 7a 03 33 58 f9 d5 d6
0c 51 7e 09 08 2e bf 2c 28
bf 32 ac b8 69 d3 a6 95 85
29 bf 7a 13 c3 cb af e6 66
90 f2 ab ad b1 e5 57 4b f3
58 f9 ad cb 54 4d 5a 44 5c
c5 e0 80 cc 64 15 3f d0 b0
e5 98 5a 50 45 da cb aa 52
c8 25 e5 21 8b 55 4a 94 09
4d 9b 36 6d da b4 69 d3 a6
4d 9b 36 6d da b4 69 d3 a6
4d 9b 36 6d da b4 69 d3 a6
4d 9b 36 6d da b4 69 d3 a6
4d 9b 36 6d da b4 69 d3 a6
....
*/
if(rle)
{
if(rle == 8)