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Got some Memory

A project log for Evolving Z80

Because I'm too poor for a full computer

FloppidyDingoFloppidyDingo 06/15/2016 at 02:580 Comments

I got some RAM and ROM for the CPU to work with, now this machine can stop wasting away its life endlessly executing NOPs. For the RAM I got an AS7C256B 32KB SRAM chip. For ROM I got a flash chip (ST39SF010A 128KB) instead of EEPROM, since it's much much cheaper. Since I'm using flash and not EEPROM, writing is a bit different. That's why I made a flash programmer with my Arduino MEGA. It works, just not the way I want it too, so no source code yet. That will be posted when I clean it up and write a client app to easily upload ROM images to the programmer. Then when I start working on the BIOS file, i'll be sure to include built in ROM imaging, so that way I can update the BIOS in the computer itself through the serial port, and not have to move the flash chip to the programmer every time

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