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VP280 - TTL Test for 74LS670 Reply  
handsome
Womble
 Hi - can you confirm if the 74LS670 test on the VP-280 actually works? It says that 2 old chips are faulty, but gives the same error with 4 new chips I have just bought. They could all be faulty but it couldalso be a bad test script, they are very uncommon chips.
Go back list [ Posted:2009-05-25 17:50:28 ] Edit Administer top

Re:VP280 - TTL Test for 74LS670 Reply  
handsome
JunoMan
 I just happen to have 2 74ls670"s here.. Tested fine in my Leaper-1 but has two errors on the VP280.

If I change

V0007:XXX01HHGHH01XXXV -> V0007:XXX01LHGHH01XXXV
V0009:XXX11LHGLH01XXXV -> V0009:XXX11HHGHH01XXXV

they pass ok.

Since the VP280 doesn"t test 7489/74189/74289 I"m surprised it tests the 74ls670.

Chris
Go back list [ Posted:2009-05-29 06:07:20 ] Edit Administer Top

Re:VP280 - TTL Test for 74LS670 Reply  
beautiful
lxx
 Please download the new software two days later.
Go back list [ Posted:2009-06-01 10:02:12 ] Edit Administer Top
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