Back to 1980 with the Orton 3C

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Peter Onion

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Sep 28, 2025, 4:04:27 PM (14 days ago) Sep 28

to RC2014-Z80

This evening's code :-)

It's a simple "leds and switches" monitor that uses the additional 8 leds and switches on my 3CX (3C eXpansion) board.

Tomorrow I will try and get it into the ROM.

PeterO

Peter Onion

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Sep 30, 2025, 7:16:01 AM (12 days ago) Sep 30

to RC2014-Z80

My Orton 3CX (3C eXpander) now has two eight bit LEDs+Switches ports :-) An I have put an V0.2 of my monitor into the EPROM. It copies it self from the EPROM down to 0000h so it runs directly from a reset :-)

The picture shows port F0h (left) being copied to port F1h (right) and vice versa.