15 Nov
2007
15 Nov
'07
1:21 p.m.
So, two things spring immediately to mind:
1) Does anyone know if the LAG from a Mac Plus is the same as (or
equivalent to) the LAG from a 512k? If so, I can take the one out of my
Plus and put it in the 512k for testing purposes. If this succeeds,
then we proceed to point 2:
Look at the Apple part number on the chip (i.e. anything apart from a
date code and the HAL16R8 bit). If that part number is the same, then
I'll wager quite a lot that it's the same prgoramming.
In my experience Apple PCBs of this vintage are not nice to work on,
though. The holes are small, the traces lift if you're not cable. it is
not easy to desolder and remove parts. It is possible, but take care.
-tony