[vcf-midatlantic] mYSTERY KEYBOARD

Neil Cherry ncherry at linuxha.com
Wed Jan 23 08:47:56 EST 2019


On 1/22/19 11:05 PM, Jonathan Gevaryahu via vcf-midatlantic wrote:
> 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?)

I can't dump the ROM right now but as I said, I'm not sure that ROM came
with it. I seem to recall popping a spare in there so I could program it
at a later date. Once I get my burner fixed up I'll try to dump the ROM.

-- 
Linux Home Automation         Neil Cherry       ncherry at linuxha.com
http://www.linuxha.com/                         Main site
http://linuxha.blogspot.com/                    My HA Blog
Author of:    	Linux Smart Homes For Dummies


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