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vciiidig.upd
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1992-12-19
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640b
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23 lines
Problems in the first rel of VCIIIDIG chip and logic
for 018x key reader as follows
Remove 74ls123 chips between the 74ls193 counter the
problem is at these chips will sometime retrigger
giving bad delay and burst counts.
update wire list:
from u5 pin 13 to u7 pin 4
from u1 pin 13 to u3 pin 3
from u3 pin 13 to u4 pin 4
New delay and burst counts as follows
0F8 for delay counts
05 for burst counts
Sorry if this caused you a problem it came accross
this problem when trying to read an 018e box.