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 …
22 Mar 2015 - 6 min read
Pulse Distribution Design: Pulses C,D and E
In my last post I covered the design of the 8-cycle finite state machine (FSM). In this post I’ll now take the outputs from that FSM and combine them to produce the …
26 Jan 2015 - 6 min read
So far I’ve got the design complete for the instruction register along with the initial design for the decoder and so I’m well on the way to having the computer …
04 Jan 2015 - 5 min read
Decoder Design: MOV-8, ALU & SETAB
In my last post I introduced the design for the instruction register which holds the current 8-bit opcode that the computer is executing. The next card to design is the …
01 Dec 2014 - 6 min read
Register Design: Instruction Register
Well, it’s fair to say that I rather underestimated just how much time decorating the new house would take up … and that’s mainly because …
19 Sep 2014 - 12 min read
Sequencing & Control Design: Overview
I’ve now got my computer to a state where I can perform ALU operations and push values around the four registers by manually operating the various control lines. …
19 Aug 2014 - 2 min read
ALU & Registers A-D Test with new Display Cards
Now that the two display cards are complete enough to display and control the status of the ALU and four registers (A-D) it’s time to fit them to the upper enclosure. …
20 Jul 2014 - 5 min read
User Interface: Display B Initial Design and Construction
In my last post I put together the beginnings of the first display card … named in a brilliant flash of nomenclature as display card A. This time I’m turning my …
12 Jul 2014 - 5 min read
User Interface: Display A Initial Design and Construction
Following on from working on the main data switches in my last post this time I’ve taken the first steps in designing and constructing the first of two display cards …
05 Jul 2014 - 6 min read
Now I’ve got a fully working ALU and four registers completed I want to take a short break from card building and turn my attention to making it easier to interact with …
