HP-67 Reads cards but does not write

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HP-67 Reads cards but does not write

02-21-2024, 07:30 PM

Post: #16

teenix Offline

Senior Member

Posts: 2,168
Joined: May 2016

RE: HP-67 Reads cards but does not write

It might be time to get the oscilloscope into action just to see the read signals going to the CRC chip on the RA RB pins.

There are some scope trace pictures in my Classic Notes starting on page 35.

cheers

Tony

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Messages In This Thread

HP-67 Reads cards but does not write - Trevor Gale - 02-10-2024, 12:40 PM

RE: HP-67 Reads cards but does not write - teenix - 02-10-2024, 01:31 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-13-2024, 08:17 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-10-2024, 05:21 PM

RE: HP-67 Reads cards but does not write - John Garza (3665) - 02-11-2024, 10:01 PM

RE: HP-67 Reads cards but does not write - John Garza (3665) - 02-13-2024, 08:27 PM

RE: HP-67 Reads cards but does not write - teenix - 02-13-2024, 09:47 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-14-2024, 07:57 PM

RE: HP-67 Reads cards but does not write - teenix - 02-14-2024, 09:42 PM

RE: HP-67 Reads cards but does not write - John Garza (3665) - 02-16-2024, 09:06 AM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-21-2024, 05:29 PM

RE: HP-67 Reads cards but does not write - AndiGer - 02-21-2024, 05:46 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-21-2024, 06:46 PM

RE: HP-67 Reads cards but does not write - AndiGer - 02-21-2024, 07:14 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-21-2024, 07:18 PM

RE: HP-67 Reads cards but does not write - teenix - 02-21-2024 07:30 PM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-23-2024, 12:34 AM

RE: HP-67 Reads cards but does not write - teenix - 02-23-2024, 02:46 AM

RE: HP-67 Reads cards but does not write - Trevor Gale - 02-24-2024, 12:26 AM

RE: HP-67 Reads cards but does not write - teenix - 02-24-2024, 01:09 AM

RE: HP-67 Reads cards but does not write - John Garza (3665) - 02-24-2024, 04:37 AM

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