stevenrun34
New member
I have a Classic II Rev B I have been working on where I very unfortunately inserted at least one (maybe both) of the ROM chips the wrong way and nuked it. I had not realized the sockets are 42 pin while the chips are 40--- and stupidly put pin 1 in the hole for what I thought was pin 1 not realizing the pin count mismatch until it was too late.
Anyway-- I have a programmer and some 100ns AM27C400 coming-- and I have a 512KB rom image-- but I am stuck on if I need to byte swap this image BEFORE or AFTER de-interleaving it into Hi / Lo.
I am hoping that one of my chips is still good and I can dump it and compare to see which order of operations I need to do.
I am trying to research for this information, but if anyone has experience or knows the correct answer, I would certainly appreciate it.
Thanks very much!
Anyway-- I have a programmer and some 100ns AM27C400 coming-- and I have a 512KB rom image-- but I am stuck on if I need to byte swap this image BEFORE or AFTER de-interleaving it into Hi / Lo.
I am hoping that one of my chips is still good and I can dump it and compare to see which order of operations I need to do.
I am trying to research for this information, but if anyone has experience or knows the correct answer, I would certainly appreciate it.
Thanks very much!