Archive

2019

07 Dec 2019Controller Design: ALU, MOV8 & SETAB Instructions
30 Nov 2019Controller Design: GOTO Instruction
20 Nov 2019Sequencer Construction
11 Nov 2019Sequencer Design: Schematic & PCBs
02 Nov 2019Sequencer Design: Pulse Distribution
01 Nov 2019Sequencer Design: 24-cycle FSM
06 Oct 2019Branching: Opcode Timing
23 Sep 2019Branching: Opcode Design
09 Aug 201916-bit Register PCB Design
15 Jul 201916-bit Register Design
04 Mar 2019Making a PCB
14 Jan 2019A change of approach
06 Jan 2019Procrastination is the thief of time

2018

27 Mar 2018Auxiliary Control Construction
07 Feb 2018Auxiliary Control Design (Part 3 of 3)
29 Jan 2018Auxiliary Control Design (Part 2 of 3)
24 Jan 2018Auxiliary Control Design (Part 1 of 3)
16 Jan 2018Fetch and Increment - Construction and Test
07 Jan 2018Incrementer Test

2017

17 Dec 2017Incrementer Construction (Part 2 of 2)
10 Dec 2017Incrementer Construction (Part 1 of 2)
30 Nov 2017Memory Test
25 Nov 2017Memory Construction (Part 2 of 2)
19 Nov 2017Memory Construction (Part 1 of 2)
11 Nov 2017Program Counter Construction
05 Nov 2017Miscellany Special: Backplane X, Cable Routing and Address Bus
29 Oct 2017Miscellany Special: Power Distribution
17 Sep 2017Control Design: Fetch and Increment
06 Sep 2017Memory Design (Part 2 of 2)
03 Sep 2017Memory Design (Part 1 of 2)
18 Aug 2017The problem with memory
06 Aug 2017More Laser Cut Parts
17 Jul 2017Incrementer Design
15 Jul 2017Incrementer Design: 16-bit Half Adder
04 Jun 2017Incrementer Design: 1-bit Half Adder
29 May 2017Register Design: Program Counter

2016

24 Jul 2016Yet another diversion
24 May 2016Sequencing & Control Test
11 Apr 2016W Backplane Construction & Power Distribution
29 Mar 2016User Interface Construction: Instruction, Clock and Sequencer
01 Jan 2016Controller Construction: MOV-8, ALU and SETAB

2015

08 Jul 2015Sequencer Construction: 8-cycle FSM
07 Jun 2015Decoder Construction: MOV-8, ALU & SETAB
16 May 2015Register Construction: Completed Instruction Register Full Test
09 May 2015Register Construction: Instruction Register
04 May 2015New Workbench
08 Apr 2015User Interface Design: Instruction, Clock and Sequencer
04 Apr 2015Control Design: MOV-8, ALU and SETAB (part 2 of 2)
31 Mar 2015Control Design: MOV-8, ALU and SETAB (part 1 of 2)
22 Mar 2015Pulse Distribution Design: Pulses C,D and E
26 Jan 2015Sequencer Design: 8-cycle FSM
04 Jan 2015Decoder Design: MOV-8, ALU & SETAB

2014

01 Dec 2014Register Design: Instruction Register
19 Sep 2014Sequencing & Control Design: Overview
19 Aug 2014ALU & Registers A-D Test with new Display Cards
20 Jul 2014User Interface: Display B Initial Design and Construction
12 Jul 2014User Interface: Display A Initial Design and Construction
05 Jul 2014User Interface: Data Switches
28 Jun 2014Register Construction: Completed A and D 8-bit Registers Full Test
22 Jun 2014Register Construction: A and D 8-bit Registers
26 May 2014Register Construction: Completed B and C 8-bit Registers Full Test
24 May 2014Register Construction: B and C 8-bit Registers
11 May 2014Register Design: B and C 8-bit Registers
10 May 2014Enclosure Update: Magic Pen
05 May 2014Enclosure Update: Fitting of Laser Cut Parts
03 May 2014Enclosure Update: Laser Cut Parts Arrived
24 Apr 2014Register Design: Dual Output 8-bit Register
20 Apr 2014Register Design: A and D 8-bit Registers
16 Apr 2014Register Design: General Purpose 8-bit Register
10 Apr 2014Enclosure Update: Laser Cutting
30 Mar 2014Completed ALU
26 Mar 2014ALU Construction: Completed Backplane
22 Mar 2014Enclosure Initial Construction
16 Mar 2014ALU Construction: Completed Control Card Full Test
14 Mar 2014ALU Construction: Control Card Power Rails & Wire Wrap
04 Mar 2014ALU Construction: Control Card Header Pins & Relay Sockets
01 Mar 2014Enclosure Disclosure
23 Feb 2014ALU Construction: Completed Arithmetic Card Full Test
19 Feb 2014ALU Construction: Arithmetic Card Wire Wrap 2
16 Feb 2014ALU Construction: Arithmetic Card Wire Wrap 1
04 Feb 2014Sketchy Diversion
26 Jan 2014ALU Construction: Arithmetic Card Power Rails
21 Jan 2014ALU Construction: 1-bit Arithmetic Full Construction
17 Jan 2014ALU Construction: Arithmetic Card Relay Sockets
06 Jan 2014ALU Construction: Arithmetic Card Header Pins

2013

18 Dec 2013ALU Construction: Completed Logic Card Full Test
18 Dec 2013ALU Construction: Logic Card Wire Wrap 3
12 Dec 2013ALU Construction: 8-bit Logic Unit Tests
12 Dec 2013ALU Construction: Logic Card Wire Wrap 2
12 Dec 2013ALU Construction: Logic Card Wire Wrap 1
10 Dec 2013ALU Construction: Logic Card Power Rails
10 Dec 2013Test Board: Construction
09 Dec 2013ALU Construction: Logic Card Relay Sockets
08 Dec 2013ALU Construction: Logic Card Header Pins
07 Dec 2013ALU Construction: 1-bit Logic Full Construction
06 Dec 2013ALU Construction: LED Tests
06 Dec 2013ALU Construction: Logic Card Wire Links
05 Dec 2013ALU Construction: LED Header Pins
03 Dec 2013Backplane Design and Construction
02 Dec 2013ALU Construction: Connectors and LEDs
01 Dec 2013ALU Design: Control Unit
30 Nov 2013ALU Design: Condition Registers
23 Nov 2013ALU Design: Zero Detect
20 Nov 2013ALU Design: Function Decoder
17 Nov 2013ALU Design: 8-bit Arithmetic Unit
15 Nov 2013ALU Design: 1-bit Arithmetic Unit
13 Nov 2013ALU Design: 8-bit Logic Unit
11 Nov 2013ALU Design: 1-bit Logic Unit
10 Nov 2013Relay Rumination
07 Nov 2013Instruction Set
07 Nov 2013Architectural breakdown: Programming and Control 2
07 Nov 2013Architectural breakdown: Programming and Control
07 Nov 2013Architectural breakdown: the ALU
06 Nov 2013Architectural breakdown: Memory
05 Nov 2013Architectural breakdown: Buses and Registers
04 Nov 2013Architectural breakdown: Binary
04 Nov 2013Architecture isn't just for houses
03 Nov 2013The three Rs
02 Nov 2013Why?
31 Oct 2013It begins