- Joined
- Jun 29, 2005
- Posts
- 923
Has a list ever been compiled of mask rom types and the equivalent chips that can be read by eprom programmers ? I am getting into doing more board repairs but am still learning about the different types of chips and the best way to verify them.
My current project is a Tatsujin board that I am trying to resurrect. I've verified the program roms and (I think) a sound rom, but I haven't been able to figure out the correct chip type to read the graphics mask roms (LH2309BJ). I tried doing some online searching, and someone said they were able to read them as a 27C1000 or a 27C301. I am under the impression that I will need to make a 27C301 to 27C010 adapter to verify the chips, but the mask rom is 28 pins and a 27C301 is 32 pins. Any input would be appreciated. I am using a GQ-4x programmer. Thanks.
My current project is a Tatsujin board that I am trying to resurrect. I've verified the program roms and (I think) a sound rom, but I haven't been able to figure out the correct chip type to read the graphics mask roms (LH2309BJ). I tried doing some online searching, and someone said they were able to read them as a 27C1000 or a 27C301. I am under the impression that I will need to make a 27C301 to 27C010 adapter to verify the chips, but the mask rom is 28 pins and a 27C301 is 32 pins. Any input would be appreciated. I am using a GQ-4x programmer. Thanks.