<I make things less original in one way, but easier to spot as well. I put
<the replacement chip in a socket (a good turned-pin socket). IMHO a board
<of TTL with one odd chip in a socket that looks to have been
<hand-soldered is likely to suggest that the chip has been replaced at
<some point, even if the notes documenting the repair are missing.
I'm one to both restore and modify. I ahve two CCS s100 systems one is
stock and the other is in the proces of recieving some mods like a IDE
adaptor. Why? The second is sans hard disk and for what I do it would
be a nice box with a hard disk as it's small. it's also reversable as
the front pannel that will also be modified will really be a new one and
not the original one.
If I had a PDP-8 and no disks I'd likely make a IO interface for a modern
drive becuase PDP-8s are easy to hack that way and it's also reversable.
The real trick would be using whatever micros so that the new disk
interfaced and behaved like an older one so I could run old code as is.
Allison