22 Jan
2019
22 Jan
'19
11:05 p.m.
On 1/22/2019 7:57 PM, Neil Cherry via vcf-midatlantic wrote:
I have a mystery keyboard from around 1985. I know the following:
- Keytronics model unknown - CPU (?) markings 30293-e 20-04592-054 GI 8215 CDA
19-4148-01 REV 1 PCB 01 A65-02395 -201A
Images: https://ushomeautomation.com/images/mystery-kb-back.jpg https://ushomeautomation.com/images/mystery-kb-front.jpg
What I haven't done so far is to power it up. And I'm not sure if the EPROM is actually original to the keyboard.
Can you dump the eprom? I'm curious if the GI chip is one of their more obscure MCUs (or it could be a pic9000 series like the olivetti m24/at&t 6300 used for its keyboard controller?) -- Jonathan Gevaryahu jgevaryahu@gmail.com jgevaryahu@hotmail.com