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Ponytail Bob

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Welcome to Ponytail Bob's

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Pony80: Memory Module

The Pony80 memory module video is live

Pony80 ROM/RAM Memory Module Video


In this video I build the ROM/RAM memory module for the Pony80.

I also go into detail about the logic chips used for selecting which chip should be active. 


The Pony80 has 8K of ROM, with the ability to page it out to RAM via an I/O call.

It has 128K of RAM; however, we are only using 64K at this point. I do want to add the ability to page different RAM zones in and out so we can effectively use all 128K.


Watch the video and then come back here for schematics, datasheets, and a few links.


Thanks to all for supporting me by liking and subscribing to my channel!

Extra Content

Pony80 ROM/RAM Memory Module Video


Datasheets


Z80 Processor


AS6C1008 - 128K RAM


AT28C64 - 8K ROM


74HCT688 - 8-bit Comparator


74HCT74 - D-Type Flip Flop


74HCT00 - NAND Gate


74HCT04 - Inverter


74HCT32 - OR Gate


Schematics



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