7segment display module and the Alpha

A project log for OMEN Alpha

As-simple-as-possible computer with the 8085 CPU

Martin MalyMartin Maly 06/02/2018 at 18:162 Comments

Just take the MAX7218 module and connect it to port C of 8255.  Of course, I could do it more "retro way", and maybe one day I will. But for now it's simple and working.

Step 2: I try to use TM1638 module to control the Alpha in the SBC way. This module has 16 buttons only, so there is no extra buttons for "action keys". But Heathkit ET-3400 has 16 keys too...


rasyoung wrote 06/04/2018 at 03:05 point

I'm excited about this board, love retro computing. Will you be posting your  MAX7218 module code on github soon I hope? Thank you :) !

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Dave's Dev Lab wrote 06/02/2018 at 19:37 point

I've been looking at various ways to do something similar for my DDL4-CPU project. The "retro way" seems more appealing to me, but it seems a lot of the older chips just aren't available any more.... 

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