HP-19C Repair Odysee

[Paul Berger (Canada)]

(03-01-2021 07:52 PM)PANAMATIK Wrote:  

(03-01-2021 06:50 PM)Paul Berger (Canada) Wrote:  I have been looking for a PIK chip for a 97 you would need printer font files for each model, I discovered that when I installed the PIK from a 91 into a 97, it works but does not print the right symbols when listing a program.

Paul.

That is a good point. I didn't know they are different. But not unsolvable.

I know how the ACT processor sends a print line to the PIK, there are two print instructions, one only for numbers, the other for alpha characters, and with an appropriate program it would be possible to print any possible character on paper and re-engineer the 5x7 matrix font. Then do this with an HP-19C and HP-97 original PIK chip. But perhaps there is a documentation of these fonts in an early patent.

I think you would not be the only person, who needs an HP-97 PIK replacement chip. I have a defective HP-97, which cannot read the keyboard, because of a defective PIK.

Bernhard

Well I found my original PIK after a long time of looking for it intermittently, I was afraid I had pitched it out when I saw that the PIK out of the 91 seemed to work, that is until I went to list a program. The keyboard part of the original PIK works fine, but it needs to warm up for 1/2 - 1 hour before the printer works correctly, but it is a lot better than nothing.

Paul.