cwilbar
Well-known member
Marble Madness TTL bipolar prom ok ? odd part number
OK... so I'm having difficulty resolving this one....
I have a TTL Marble Madness cartridge, I have not tested it yet.
However, I read the bipolar PROMs with my programmer and have been trying to determine if they are ok.
I know one should be, 136033-119 has the same SHA1 sum as in the mame source.
However I don't have a 136033-118. Instead I have a 136033-155.
I find no mention of that # in a google search.
The sha1 sum is not that of 136-118.
Here is a comparison of byte values to the -118 from mame:
$ od -t x1 033155_bad.bin
0000000 e8 e9 ea eb ec ed ee ef d8 d9 da db dc dd de df
*
0000100 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0000400 b8 b9 ba bb bc bd be bf b8 b9 ba bb bc bd be bf
*
0000500 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0001000
$ od -t x1 tmp/136033.118
0000000 e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef
*
0000100 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0000400 d8 d9 da db dc dd de df d8 d9 da db dc dd de df
*
0000500 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
the first row and 3rd row differ, the 2nd and 4th row are all f0 in both images.
This leads me to think this data may be ok for a 136033-155, but WTF is a 136033-155 !?
Hoping a System 1 guru can shed some light on this one. I don't want to burn a -118 and use up a blank prom if the 155 is ok, and correct to use (it is in location 6A (TTL PCB, not LSI).
I also have another MM board (LSI) version that had no EPROMs or bipolar proms. I burned EPROMS and bipolar PROMS using the images from the LSI cart romset of MAME.
I haven't tested this one either yet.
OK... so I'm having difficulty resolving this one....
I have a TTL Marble Madness cartridge, I have not tested it yet.
However, I read the bipolar PROMs with my programmer and have been trying to determine if they are ok.
I know one should be, 136033-119 has the same SHA1 sum as in the mame source.
However I don't have a 136033-118. Instead I have a 136033-155.
I find no mention of that # in a google search.
The sha1 sum is not that of 136-118.
Here is a comparison of byte values to the -118 from mame:
$ od -t x1 033155_bad.bin
0000000 e8 e9 ea eb ec ed ee ef d8 d9 da db dc dd de df
*
0000100 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0000400 b8 b9 ba bb bc bd be bf b8 b9 ba bb bc bd be bf
*
0000500 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0001000
$ od -t x1 tmp/136033.118
0000000 e0 e1 e2 e3 e4 e5 e6 e7 e8 e9 ea eb ec ed ee ef
*
0000100 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
0000400 d8 d9 da db dc dd de df d8 d9 da db dc dd de df
*
0000500 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0 f0
*
the first row and 3rd row differ, the 2nd and 4th row are all f0 in both images.
This leads me to think this data may be ok for a 136033-155, but WTF is a 136033-155 !?
Hoping a System 1 guru can shed some light on this one. I don't want to burn a -118 and use up a blank prom if the 155 is ok, and correct to use (it is in location 6A (TTL PCB, not LSI).
I also have another MM board (LSI) version that had no EPROMs or bipolar proms. I burned EPROMS and bipolar PROMS using the images from the LSI cart romset of MAME.
I haven't tested this one either yet.
