More Z80 build

Most of the IC’s are now in their sockets (on the CPU card at least). Getting close to being able to fire it up – just need the DS1210, and the PLCC adapter so I can do the initial programming of the flash memory. Live streams on Twitch

June 2, 2021 · 1 min · 48 words · TassieBob

More Z80 build

More Z80 board build… Live streams on Twitch

May 20, 2021 · 1 min · 8 words · TassieBob

Z80 system build

Recently I started putting together a Z80 based system from the Retrobrew Computers web site. The build is fairly well advanced, but I’m still waiting on some parts to finish it off. The Z80 Backplane is mostly done – I went with the 8-slot backplane because 3 was too small, 4 was borderline, and 12 was too big. I figured with an 8-slot board I could start by populating 5 connectors and add the others if I need to....

May 20, 2021 · 2 min · 299 words · TassieBob

BBC’s and Z80 update

A look at my “main” BBC model B and the upgrades that I’ve done to it, re-assembling the other model B, checking out the double floppy drive unit, and an update on what’s been happening with the Z80 build. Live streams on Twitch

May 18, 2021 · 1 min · 43 words · TassieBob

More Z80, BBC, and A501

More bits arrived so the Z80 boards are starting to fill up. Gave the BBC keys a bit of a clean, and with the soldering iron fixed, took the A501 apart to see what was going on inside, and a quick run down of things to come. Live streams on Twitch

May 14, 2021 · 1 min · 51 words · TassieBob

Latest PCB's arrive

Quick lunch time stream looking at the latest PCB’s that arrived. Z80 Backplane ECB Disk controller EBC CPU card Live streams at Twitch

May 5, 2021 · 1 min · 23 words · TassieBob

More on the Z80 boards, the A501, and some parts salvage

Trying to get the backplane connectors into the backplane board (they’re wire wrap connectors I think, so the pins seem slightly larger)… Seeing what IC sockets I have, checking some 74 series logic chips in the Minipro, first look at the “suspect” A501 from the Amiga, and salvaging a few bits from an old PSU. Live streams at Twitch

May 5, 2021 · 1 min · 59 words · TassieBob