Southern Cross 1 Z80 Computer
The Southern Cross I is a Z80-based single board computer kit from DIY Electronics. I finished assembling it on September 18th, after about eight total hours of work spread over three days.

I'll be using it to learn Z80 assembly language, with Programming the Z80 and Z80 Assembly Language Programming as references.

This kit can be purchased from Electronics123 or Circuit Specialists for around $75.

I've discovered that the SC1 hardware design was apparently shamelessly
copied from the Talking Electronics TEC-1.
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