HP97 The journey begins

[Chr Yoko]

(01-29-2021 06:28 AM)teenix Wrote:  Hi all,

Some more progress.

The keyboard, display and switches all seem to be working correctly which verifies the PCB design and PIC code for these items.

Next I'll see if the card read/write code I imported from the 67 works.
97
One problem is that the ribbon cable between the main PCB and card reader PCB has failed due to cracking and doesn't seem repairable. Has anyone found a replacement for these as 0.1 inch track spacing seems to be scarce for flat film connectors these days.

If no progress, I'll move on to the printer which has a whole host of challenges.

cheers

Tony

Looks Great !!

Do you have the overall specs of this new 97 MotherBoard ?

- PowerSupply possible from an USB 5V connector/cable ?
(my 97 has been converted to USB power, so no more need of that old AC powersupply that i do not have anyway)
- Will it keep programs into RAM after switch off ?
- Will there be some onboard flash memory to store programs ?
If yes, how much kb ?
How will we manage the list of programs available (dir/copy/delete ?)
- Will there be an USB connection for PC<w=>97 data exchange ?