rde@eagle.ukc.ac.uk (R.D.Eager) (05/01/87)
I have two PCs (one 4.77, one 8 MHz) both of which have NEC V20s fitted,
and both of which work fine. However, a few days ago I had a discussion
with someone from the U.S. who said that certain batches had
problems. To summarise:
The batch letter (or something) is the last letter (and optional digit)
on the first line of printing on the chip. Possible letters are:
K9 - 50% duty cycle - PROBLEMS
L - 33% duty cycle but limited temp range
M - 33% duty cycle, OK
Other letters, same as M. I understand that the normal duty cycle is
33%; fine. Both my V20s are K9s. What does this imply? Should I change
them? Any ideas anyone?
--
Bob Eager
rde@ukc.UUCP
...!mcvax!ukc!rde
Phone: +44 227 66822 ext 7589