12 Feb
2013
12 Feb
'13
3:27 p.m.
On Feb 12, 2013, at 10:09 AM, "E. Groenenberg" <quapla at xs4all.nl>
wrote:
Hi,
Just wondering, is it possible to upgrade a CMD CQD-220/T/M to a
CQD-220/TM by replacing the 2 firmware eproms?
That's half the equation; you also need to replace the CSR decode
PAL with the /TM version. Glen Slick has the PALASM equations
up somewhere for a workalike; I've verified that they work using
a GAL22V10, which is both rewriteable if something goes wrong and
also a whole lot more available these days.
- Dave