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Ralphy Rocket

Old 800 memories

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Posted (edited)

I totally forgot I did this a long time ago...1 meg dynamic ram (dont ask me what scheme) and a IDE interface for my 800...

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you can just see the decoded address being intercepted from the other 2 slots

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Edited by Ralphy Rocket
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Nice to see what we got up to all those years ago, but more importantly did it work ?

 

and do you have any circuit diagrams/scetches of what you built ?

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Looks like that 74HC373 latch has 6 output bits wired, so it's probably 64 banks of 16K.

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21 hours ago, TGB1718 said:

Nice to see what we got up to all those years ago, but more importantly did it work ?

 

and do you have any circuit diagrams/scetches of what you built ?

Yup it worked. when i do these things its just for fun. i dont have any diagrams. there was also modifications to the mother board , thats not shown. but i will re build it and post the schematics.

 

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3 hours ago, ClausB said:

Looks like that 74HC373 latch has 6 output bits wired, so it's probably 64 banks of 16K.

hahaha! CLAUS you have influence on this!!! i know i read your article and ran with it!!!  If i remember correctly...yes!..16k banks and I split the PIA address space and used it for bank select...you can see the 373 select line hanging off the board, it went to other decoding inside the 800 ('138???) i didnt open it yet..... again..just for shits and giggles. I would love to replicate this setup with static ram...may I reach out to you for technical advise sir??

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