Restoring IBM (was: Age)

[William Donzelli]

> Suppose we try to restore the 360/30, and one of the hybrid SLT
> modules is bad.  Where do you suppose we'll find a replacement? 

>From another card. There were not that many types of SLT (unlike the later
families).

I woudn't be suprised if you could still get them from IBM. SLT continued
to be used in new designs after the other families came into being.

> Most
> likely we would have to try to fabricate one, assuming that we could
> find or reverse-engineer a schematic for the particular module.

Certainly one could fabricate SLT. SOTs and surface mount resistors on a
PC board. As you know, there isn't much to an SLT module.

If you had to fabricate one, you would be better off fabricating a bunch
at one time on one board, then chopping it into the individual circuits.. 

William Donzelli
aw288 at osfn.org