Quote:
Originally Posted by Timbucus
If there is no line and field sync on pin 26 then you could be correct.
Also if the address lines into IC64 (4-7) and IC65 (8,29-22) are not cycling and there is nothing on 13,12 and 11 for the character row then it is likely failed.
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I taken the chip out of circuit and jumper up the XT pin 2 now still has the 1Mhz out put but no activity on any other pin.
VDU Chip out of Circuit
In this config would we expect to see at least some activity ?
Also as you can see the marking on my chip have gone.