The CFT Minicomputer @CFTproject

CFT documentation back online at bedroomlan.org/hardware/cft/, including the in-browser emulator! More goodies incoming.

Did you know the UK now has its own computer museum in Cambridge? See computinghistory.org.uk and @computermuseum - can't wait to go!

Ο 150ος υπολογιστής προστέθηκε στην συλλογή μας, επόμενος στόχος να φθάσουμε τους 200ους... ow.ly/i/4575x

Board 2 of the Debugging Front Panel (frankenstein DEBugging board + Programmer's Front Panel) is now wired. On to Board 1! #electronics

Help us preserve this Ferranti Argus 100 from 1963. We need your help to raise money for logistics ... computinghistory.org.uk/news/32254/Hel… Pls RT

Front panel board 2 finally being wired. Yes, the bench is SUPPOSED to look this messy. #retrocomputing #electronics

Unexpectedly scary — I finished building all four PCBs of the CFT processor. Untested for now, but still, it has a weird finality to it.

JSMESS: an ongoing JavaScript port of the generic emulator MESS. Run every old computer on a browser! jsmess.textfiles.com

Non-Von Nuemann supercomputer in an FPGA chrisfenton.com/non-von-1/

RT @shareahack: A 240 year old automaton that can write preconfigured sentences. chonday.com/Videos/the-wri… #flashback

D'oh! Reworking control bus assignments. There are exactly 81 signals, and 80 pins. Electronics musical chairs, anyone?

Processor Board 0 (formerly the Microcode Board) submitted for printing. Ten of these should be ready in a couple of weeks.

A batch of front panel boards are now on their way from China! (where else?) ‘Batch’ is misleading. There's 10, and 8 make ONE front panel.

<<< is that that number is NOT a Wagstaff prime. I'm utterly confused, and the regression test (in CFT assembly) is basically uncommented.

The 32-big negation test negates multiples of a Wagstaff prime. I have no clue why and I wrote the test. What's more interesting though, >>>

Front panel PCB modules are apparently now being printed. Etched. Milled. Drilled. Fabricated. Going from brainspace to meatspace. Whatever.

One of the oscilloscopes I've been considering runs #ARM #Linux and has a serial console. Free 60→200 MHz upgrade and hack value? Sold!

Just before construction, I took the time to for some better Verilog tests. What do you know? Lots of problems found in the schematics.

Extreme debugging - a tale of microcode and an oven j.mp/YiMHX9 #embedsys

Luckily, the fix didn't involve moving ICs about, routing more inter-board signals or using ICs not in my stocks. My kind of fix exactly.