First Stage, Assemble and Test the CPLD

A project log for Building a 68030 computer in 5 stages

Based on Tiny030 design

PlasmodePlasmode 02/21/2019 at 16:131 Comment

Start off with a blank Tiny030 pc board:

The first stage is to assemble and test the CPLD by driving a few LEDs.  The CPLD is Altera EPM7128SLC84 hosted in a through-hole 84-pin PLCC socket.

Add the 68681 40-pin socket because jumpers are needed to connect CPLD output to 7-segment display.  Populate the EPM7128SLC84 as shown and insert 4 jumpers from the 68681 socket as follow:

This connect 4 currently unused CPLD outputs to 4 of the 7-segment display.  Also populate the oscillator.  Here is the Altera CPLD programming file.


Rusty Nutt wrote 09/13/2021 at 11:20 point

This is the 3rd time arriving at this project in the wee hours of the morning. It's time to set back and digest how it works, the extremely small form factor overall, and how it's features can be modeled into one of my own.

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