Looking for Atari Sys 1 rom image 136032.105.l13

steph

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I'm looking for a "good" image of the Atari Sys 1 Bios eprom 136032.105.l13

The one is MAME appears to be a blank dump. ( All "FF" ).

I assume this an error because it makes no sense to use a blank eprom.

So if anyone has a "valid" image of this eprom, ( 23128 / 27c128)
I would be very grateful.

Thanks,
Steph
 
Does anyone know what the different Bios are ?

BIOS:

136032.205.l13 (main $0 - 16k) TTL
136032.206.l12 (main $1 - 16k) TTL

136032.105.l13 (main $0 - 16k) TTL1
136032.106.l12 (main $1 - 16k) TTL1

136032.114.j11 (main $0 - 16k) LSI
136032.115.j10 (main $1 - 16k) LSI


Most games (in MAME) seem to use TTL verison.

I'm looking for TTL1 , specifically 136032.105.l13 , which is blank in the MAME dumps.

Any info would be great.

Thanks,
Steph
 
Some of those 40 pin chips are custom chips and I think cannot be duplicated but I'm not 100% sure.
 
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