24 May 2016 - 2 min read
It’s finally time to give all the cards created so far a test so I can check everything works together as expected. This represents quite a bit of a milestone as the …
11 Apr 2016 - 3 min read
W Backplane Construction & Power Distribution
Before I can test the new decoder, sequencer and controller cards all working together with the rest of the computer I need to construct the ‘W’ backplane which …
29 Mar 2016 - 4 min read
User Interface Construction: Instruction, Clock and Sequencer
Well, the good news is I’ve just passed a major milestone in constructing this relay computer … it can now perform a single instruction in full firing the various …
01 Jan 2016 - 3 min read
Controller Construction: MOV-8, ALU and SETAB
So yea, it’s been a while since my last post … in fact it’s been just over six months. For some reason I decided I didn’t have enough to do in the …
08 Jul 2015 - 6 min read
Sequencer Construction: 8-cycle FSM
I’m just about at the half way mark now for getting the computer to operate the MOV8, ALU and SETAB instructions. The easier cards are out of the way now … time …
07 Jun 2015 - 3 min read
Decoder Construction: MOV-8, ALU & SETAB
In a change from prior form I’m combining the construction and testing of the next card in to a single post this time. Partly because this card is a nice easy one but …
16 May 2015 - 1 min read
Register Construction: Completed Instruction Register Full Test
Following on from my last post, and after popping in some relays, the instruction register is complete and looks like this: As usual I’ve put a video together that …
09 May 2015 - 3 min read
Register Construction: Instruction Register
There’s been lots of theory going on in my recent posts but the time for design is over (for now) … it’s time to get constructing. The first card up in this …
04 May 2015 - 5 min read
Those who have been reading my posts and watching my videos (you have my sympathy) will know that alongside constructing this computer I’ve also been busy renovating a …
08 Apr 2015 - 4 min read
User Interface Design: Instruction, Clock and Sequencer
Over my last seven posts I’ve been slowly putting together the card designs so that the computer will be able to operate the MOV-8, ALU and SETAB instructions. The final …
04 Apr 2015 - 6 min read
Control Design: MOV-8, ALU and SETAB (part 2 of 2)
In part one of this two part post I introduced the design of the control relays for each of the MOV-8, ALU and SETAB instructions. With these in hand I can now move on to …
31 Mar 2015 - 9 min read
Control Design: MOV-8, ALU and SETAB (part 1 of 2)
Over the last five posts I’ve been building up the design of a set of cards so that the computer will be able to understand and perform the MOV-8, ALU and SETAB …