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WIP deco_ace QA (nw)

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Angelo Salese 2020-03-16 00:51:47 +01:00 committed by GitHub
parent ca0732bfb3
commit b7d87075b2
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 5 additions and 2 deletions
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7
src/mame/video/deco_ace.cpp
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@ -29,8 +29,11 @@
Bytes 0x14(0x28) to 0x19(0x32) - object alpha control per pixel (if ((pix & 0x900) == 0x900))
Bytes 0x1a(0x34) to 0x1e(0x3c) - unused/unknown
Bytes 0x1f(0x3e) - 2nd tilemap chip, 'tilemap_1' alpha control, used at shadowing
0 = opaque, 0x10 = 50% transparent, 0x20 = fully transparent, 0x21/0x22/0x1000 = used,unknown
0 = opaque, 0x10 = 50% transparent,
0x20 = fully transparent (doesn't make sense bitwise -AS),
0x22 = stage 1 boss dark effect in Boogie Wings (incorrectly emulated, reverses source pixel + shifts down by 1? -AS)
0x21/0x1000 = used,unknown (by what!? -AS)
Byte 0x00: ACEO000P0
P8