BG micro (
www.bgmicro.com ) still has 765,1771,1791,1793,1795,1797,2793
and 2797 floppy disc controllers if your old machine need a new floppy
disk chip. Looking at the same page they also have some old memory chips
like 16kx1 drams and 1kx1 static ram.
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Ben Franchuk - Dawn * 12/24 bit cpu *
www.jetnet.ab.ca/users/bfranchuk/index.html