HP-65 goes on hold after reading a card

[albertofenini]

Hi Tony, Hi Everyone

don't worry, we will ask Santa to bring us a new reworking station, our is quite dated ..
The hybrid pins reparation works very well, is the hybrid itself that doesn't work ...
To your knowledge, is the process of storing and executing a program involving the ROMS ?
I feel that the storage space for programs is in the hybrid, and the card reader handling as well, so I would say ROMs have little to do with that ...
We have a set from a old unit and we will give it a try replacing the actual ones

It would be nice to know what exactly each ROM ids responsible for, is that complicated ?

By the way, the unit that keeps on all the C segments (Disp0 and RCD low in amplitude...) would benefit from a ROM change ?
HP-65 1605A02841 - weird display and card reader issues

(11-29-2020 10:06 PM)teenix Wrote:  

(11-29-2020 05:03 PM)albertofenini Wrote:  Hi Tony, hi everyone

It has hurt a little since pin 4 and pin 11 broke ...
Anyway, we fixed with two ultra thin cables
Inspection one removed the hybrid didn’t reveal anything
Once the hybrid has been put in place again the behavior was exactly as before

When loading or executing a program it goes in a hold status

Tony How much is worth to replace the ROMs set ?

Hi Alberto,

Sorry, I thought you would just re-solder each pin one at a time while the hybrid was still in place.

I don't know about the ROMs as I have never replaced any.

cheers

Tony