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ALU

19 Aug 2014 ALU & Registers A-D Test with new Display Cards
30 Mar 2014 Completed ALU
26 Mar 2014 ALU Construction: Completed Backplane
16 Mar 2014 ALU Construction: Completed Control Card Full Test
14 Mar 2014 ALU Construction: Control Card Power Rails & Wire Wrap
04 Mar 2014 ALU Construction: Control Card Header Pins & Relay Sockets
23 Feb 2014 ALU Construction: Completed Arithmetic Card Full Test
19 Feb 2014 ALU Construction: Arithmetic Card Wire Wrap 2
16 Feb 2014 ALU Construction: Arithmetic Card Wire Wrap 1
26 Jan 2014 ALU Construction: Arithmetic Card Power Rails
21 Jan 2014 ALU Construction: 1-bit Arithmetic Full Construction
17 Jan 2014 ALU Construction: Arithmetic Card Relay Sockets
06 Jan 2014 ALU Construction: Arithmetic Card Header Pins
18 Dec 2013 ALU Construction: Completed Logic Card Full Test
18 Dec 2013 ALU Construction: Logic Card Wire Wrap 3
12 Dec 2013 ALU Construction: 8-bit Logic Unit Tests
12 Dec 2013 ALU Construction: Logic Card Wire Wrap 2
12 Dec 2013 ALU Construction: Logic Card Wire Wrap 1
10 Dec 2013 ALU Construction: Logic Card Power Rails
09 Dec 2013 ALU Construction: Logic Card Relay Sockets
08 Dec 2013 ALU Construction: Logic Card Header Pins
07 Dec 2013 ALU Construction: 1-bit Logic Full Construction
06 Dec 2013 ALU Construction: LED Tests
06 Dec 2013 ALU Construction: Logic Card Wire Links
05 Dec 2013 ALU Construction: LED Header Pins
02 Dec 2013 ALU Construction: Connectors and LEDs
01 Dec 2013 ALU Design: Control Unit
30 Nov 2013 ALU Design: Condition Registers
23 Nov 2013 ALU Design: Zero Detect
20 Nov 2013 ALU Design: Function Decoder
17 Nov 2013 ALU Design: 8-bit Arithmetic Unit
15 Nov 2013 ALU Design: 1-bit Arithmetic Unit
13 Nov 2013 ALU Design: 8-bit Logic Unit
11 Nov 2013 ALU Design: 1-bit Logic Unit
07 Nov 2013 Architectural breakdown: the ALU

Architecture

24 Jul 2016 Yet another diversion
07 Nov 2013 Instruction Set
07 Nov 2013 Architectural breakdown: Programming and Control 2
07 Nov 2013 Architectural breakdown: Programming and Control
07 Nov 2013 Architectural breakdown: the ALU
06 Nov 2013 Architectural breakdown: Memory
05 Nov 2013 Architectural breakdown: Buses and Registers
04 Nov 2013 Architectural breakdown: Binary
04 Nov 2013 Architecture isn't just for houses

UI

27 Mar 2018 Auxiliary Control Construction
07 Feb 2018 Auxiliary Control Design (Part 3 of 3)
29 Jan 2018 Auxiliary Control Design (Part 2 of 3)
24 Jan 2018 Auxiliary Control Design (Part 1 of 3)
29 Mar 2016 User Interface Construction: Instruction, Clock and Sequencer
08 Apr 2015 User Interface Design: Instruction, Clock and Sequencer
19 Aug 2014 ALU & Registers A-D Test with new Display Cards
20 Jul 2014 User Interface: Display B Initial Design and Construction
12 Jul 2014 User Interface: Display A Initial Design and Construction
05 Jul 2014 User Interface: Data Switches

coding

24 Jul 2016 Yet another diversion
07 Nov 2013 Instruction Set

completion

20 Nov 2019 Sequencer Construction
16 Jan 2018 Fetch and Increment - Construction and Test
07 Jan 2018 Incrementer Test
30 Nov 2017 Memory Test
11 Nov 2017 Program Counter Construction
24 May 2016 Sequencing & Control Test
07 Jun 2015 Decoder Construction: MOV-8, ALU & SETAB
16 May 2015 Register Construction: Completed Instruction Register Full Test
28 Jun 2014 Register Construction: Completed A and D 8-bit Registers Full Test
26 May 2014 Register Construction: Completed B and C 8-bit Registers Full Test
30 Mar 2014 Completed ALU
26 Mar 2014 ALU Construction: Completed Backplane
16 Mar 2014 ALU Construction: Completed Control Card Full Test
23 Feb 2014 ALU Construction: Completed Arithmetic Card Full Test
18 Dec 2013 ALU Construction: Completed Logic Card Full Test

construction

20 Nov 2019 Sequencer Construction
04 Mar 2019 Making a PCB
27 Mar 2018 Auxiliary Control Construction
10 Dec 2017 Incrementer Construction (Part 1 of 2)
25 Nov 2017 Memory Construction (Part 2 of 2)
19 Nov 2017 Memory Construction (Part 1 of 2)
11 Nov 2017 Program Counter Construction
05 Nov 2017 Miscellany Special: Backplane X, Cable Routing and Address Bus
29 Oct 2017 Miscellany Special: Power Distribution
06 Aug 2017 More Laser Cut Parts
11 Apr 2016 W Backplane Construction & Power Distribution
29 Mar 2016 User Interface Construction: Instruction, Clock and Sequencer
01 Jan 2016 Controller Construction: MOV-8, ALU and SETAB
08 Jul 2015 Sequencer Construction: 8-cycle FSM
07 Jun 2015 Decoder Construction: MOV-8, ALU & SETAB
09 May 2015 Register Construction: Instruction Register
04 May 2015 New Workbench
20 Jul 2014 User Interface: Display B Initial Design and Construction
12 Jul 2014 User Interface: Display A Initial Design and Construction
05 Jul 2014 User Interface: Data Switches
22 Jun 2014 Register Construction: A and D 8-bit Registers
24 May 2014 Register Construction: B and C 8-bit Registers
10 Apr 2014 Enclosure Update: Laser Cutting
26 Mar 2014 ALU Construction: Completed Backplane
22 Mar 2014 Enclosure Initial Construction
16 Mar 2014 ALU Construction: Completed Control Card Full Test
14 Mar 2014 ALU Construction: Control Card Power Rails & Wire Wrap
04 Mar 2014 ALU Construction: Control Card Header Pins & Relay Sockets
23 Feb 2014 ALU Construction: Completed Arithmetic Card Full Test
19 Feb 2014 ALU Construction: Arithmetic Card Wire Wrap 2
16 Feb 2014 ALU Construction: Arithmetic Card Wire Wrap 1
26 Jan 2014 ALU Construction: Arithmetic Card Power Rails
21 Jan 2014 ALU Construction: 1-bit Arithmetic Full Construction
17 Jan 2014 ALU Construction: Arithmetic Card Relay Sockets
06 Jan 2014 ALU Construction: Arithmetic Card Header Pins
18 Dec 2013 ALU Construction: Completed Logic Card Full Test
18 Dec 2013 ALU Construction: Logic Card Wire Wrap 3
12 Dec 2013 ALU Construction: 8-bit Logic Unit Tests
12 Dec 2013 ALU Construction: Logic Card Wire Wrap 2
12 Dec 2013 ALU Construction: Logic Card Wire Wrap 1
10 Dec 2013 ALU Construction: Logic Card Power Rails
10 Dec 2013 Test Board: Construction
09 Dec 2013 ALU Construction: Logic Card Relay Sockets
08 Dec 2013 ALU Construction: Logic Card Header Pins
07 Dec 2013 ALU Construction: 1-bit Logic Full Construction
06 Dec 2013 ALU Construction: LED Tests
06 Dec 2013 ALU Construction: Logic Card Wire Links
05 Dec 2013 ALU Construction: LED Header Pins
03 Dec 2013 Backplane Design and Construction
02 Dec 2013 ALU Construction: Connectors and LEDs

control

07 Dec 2019 Controller Design: ALU, MOV8 & SETAB Instructions
30 Nov 2019 Controller Design: GOTO Instruction
06 Oct 2019 Branching: Opcode Timing
23 Sep 2019 Branching: Opcode Design
27 Mar 2018 Auxiliary Control Construction
07 Feb 2018 Auxiliary Control Design (Part 3 of 3)
29 Jan 2018 Auxiliary Control Design (Part 2 of 3)
24 Jan 2018 Auxiliary Control Design (Part 1 of 3)
16 Jan 2018 Fetch and Increment - Construction and Test
17 Sep 2017 Control Design: Fetch and Increment
01 Jan 2016 Controller Construction: MOV-8, ALU and SETAB
04 Apr 2015 Control Design: MOV-8, ALU and SETAB (part 2 of 2)
31 Mar 2015 Control Design: MOV-8, ALU and SETAB (part 1 of 2)
19 Sep 2014 Sequencing & Control Design: Overview

decoder

07 Jun 2015 Decoder Construction: MOV-8, ALU & SETAB
04 Jan 2015 Decoder Design: MOV-8, ALU & SETAB

design

07 Dec 2019 Controller Design: ALU, MOV8 & SETAB Instructions
30 Nov 2019 Controller Design: GOTO Instruction
11 Nov 2019 Sequencer Design: Schematic & PCBs
02 Nov 2019 Sequencer Design: Pulse Distribution
01 Nov 2019 Sequencer Design: 24-cycle FSM
06 Oct 2019 Branching: Opcode Timing
23 Sep 2019 Branching: Opcode Design
09 Aug 2019 16-bit Register PCB Design
15 Jul 2019 16-bit Register Design
14 Jan 2019 A change of approach
07 Feb 2018 Auxiliary Control Design (Part 3 of 3)
29 Jan 2018 Auxiliary Control Design (Part 2 of 3)
24 Jan 2018 Auxiliary Control Design (Part 1 of 3)
17 Sep 2017 Control Design: Fetch and Increment
06 Sep 2017 Memory Design (Part 2 of 2)
03 Sep 2017 Memory Design (Part 1 of 2)
18 Aug 2017 The problem with memory
17 Jul 2017 Incrementer Design
15 Jul 2017 Incrementer Design: 16-bit Half Adder
04 Jun 2017 Incrementer Design: 1-bit Half Adder
29 May 2017 Register Design: Program Counter
08 Apr 2015 User Interface Design: Instruction, Clock and Sequencer
04 Apr 2015 Control Design: MOV-8, ALU and SETAB (part 2 of 2)
31 Mar 2015 Control Design: MOV-8, ALU and SETAB (part 1 of 2)
22 Mar 2015 Pulse Distribution Design: Pulses C,D and E
26 Jan 2015 Sequencer Design: 8-cycle FSM
04 Jan 2015 Decoder Design: MOV-8, ALU & SETAB
01 Dec 2014 Register Design: Instruction Register
19 Sep 2014 Sequencing & Control Design: Overview
20 Jul 2014 User Interface: Display B Initial Design and Construction
12 Jul 2014 User Interface: Display A Initial Design and Construction
05 Jul 2014 User Interface: Data Switches
11 May 2014 Register Design: B and C 8-bit Registers
24 Apr 2014 Register Design: Dual Output 8-bit Register
20 Apr 2014 Register Design: A and D 8-bit Registers
16 Apr 2014 Register Design: General Purpose 8-bit Register
10 Apr 2014 Enclosure Update: Laser Cutting
01 Mar 2014 Enclosure Disclosure
04 Feb 2014 Sketchy Diversion
03 Dec 2013 Backplane Design and Construction
01 Dec 2013 ALU Design: Control Unit
30 Nov 2013 ALU Design: Condition Registers
23 Nov 2013 ALU Design: Zero Detect
20 Nov 2013 ALU Design: Function Decoder
17 Nov 2013 ALU Design: 8-bit Arithmetic Unit
15 Nov 2013 ALU Design: 1-bit Arithmetic Unit
13 Nov 2013 ALU Design: 8-bit Logic Unit
11 Nov 2013 ALU Design: 1-bit Logic Unit
10 Nov 2013 Relay Rumination

enclosure

05 Nov 2017 Miscellany Special: Backplane X, Cable Routing and Address Bus
29 Oct 2017 Miscellany Special: Power Distribution
06 Aug 2017 More Laser Cut Parts
19 Aug 2014 ALU & Registers A-D Test with new Display Cards
10 May 2014 Enclosure Update: Magic Pen
05 May 2014 Enclosure Update: Fitting of Laser Cut Parts
03 May 2014 Enclosure Update: Laser Cut Parts Arrived
10 Apr 2014 Enclosure Update: Laser Cutting
22 Mar 2014 Enclosure Initial Construction
01 Mar 2014 Enclosure Disclosure
04 Feb 2014 Sketchy Diversion

incrementer

07 Jan 2018 Incrementer Test
10 Dec 2017 Incrementer Construction (Part 1 of 2)
17 Jul 2017 Incrementer Design
15 Jul 2017 Incrementer Design: 16-bit Half Adder
04 Jun 2017 Incrementer Design: 1-bit Half Adder

memory

30 Nov 2017 Memory Test
25 Nov 2017 Memory Construction (Part 2 of 2)
19 Nov 2017 Memory Construction (Part 1 of 2)
06 Sep 2017 Memory Design (Part 2 of 2)
03 Sep 2017 Memory Design (Part 1 of 2)
18 Aug 2017 The problem with memory

misc

04 May 2015 New Workbench

musings

14 Jan 2019 A change of approach
06 Jan 2019 Procrastination is the thief of time
18 Aug 2017 The problem with memory
01 Mar 2014 Enclosure Disclosure
04 Feb 2014 Sketchy Diversion
10 Nov 2013 Relay Rumination
03 Nov 2013 The three Rs
02 Nov 2013 Why?
31 Oct 2013 It begins

power

29 Oct 2017 Miscellany Special: Power Distribution

pulse distribution

17 Sep 2017 Control Design: Fetch and Increment
08 Jul 2015 Sequencer Construction: 8-cycle FSM
22 Mar 2015 Pulse Distribution Design: Pulses C,D and E

registers

09 Aug 2019 16-bit Register PCB Design
15 Jul 2019 16-bit Register Design
11 Nov 2017 Program Counter Construction
29 May 2017 Register Design: Program Counter
16 May 2015 Register Construction: Completed Instruction Register Full Test
09 May 2015 Register Construction: Instruction Register
01 Dec 2014 Register Design: Instruction Register
19 Aug 2014 ALU & Registers A-D Test with new Display Cards
28 Jun 2014 Register Construction: Completed A and D 8-bit Registers Full Test
22 Jun 2014 Register Construction: A and D 8-bit Registers
26 May 2014 Register Construction: Completed B and C 8-bit Registers Full Test
24 May 2014 Register Construction: B and C 8-bit Registers
11 May 2014 Register Design: B and C 8-bit Registers
24 Apr 2014 Register Design: Dual Output 8-bit Register
20 Apr 2014 Register Design: A and D 8-bit Registers
16 Apr 2014 Register Design: General Purpose 8-bit Register

sequencing

11 Nov 2019 Sequencer Design: Schematic & PCBs
02 Nov 2019 Sequencer Design: Pulse Distribution
01 Nov 2019 Sequencer Design: 24-cycle FSM
06 Oct 2019 Branching: Opcode Timing
23 Sep 2019 Branching: Opcode Design
27 Mar 2018 Auxiliary Control Construction
07 Feb 2018 Auxiliary Control Design (Part 3 of 3)
29 Jan 2018 Auxiliary Control Design (Part 2 of 3)
24 Jan 2018 Auxiliary Control Design (Part 1 of 3)
16 Jan 2018 Fetch and Increment - Construction and Test
08 Jul 2015 Sequencer Construction: 8-cycle FSM
26 Jan 2015 Sequencer Design: 8-cycle FSM
19 Sep 2014 Sequencing & Control Design: Overview

simulation

24 Jul 2016 Yet another diversion

theory

06 Oct 2019 Branching: Opcode Timing
23 Sep 2019 Branching: Opcode Design
18 Aug 2017 The problem with memory
19 Sep 2014 Sequencing & Control Design: Overview
07 Nov 2013 Architectural breakdown: Programming and Control 2
07 Nov 2013 Architectural breakdown: Programming and Control
07 Nov 2013 Architectural breakdown: the ALU
06 Nov 2013 Architectural breakdown: Memory
05 Nov 2013 Architectural breakdown: Buses and Registers
04 Nov 2013 Architectural breakdown: Binary

video

20 Nov 2019 Sequencer Construction
04 Mar 2019 Making a PCB
27 Mar 2018 Auxiliary Control Construction
16 Jan 2018 Fetch and Increment - Construction and Test
07 Jan 2018 Incrementer Test
30 Nov 2017 Memory Test
11 Nov 2017 Program Counter Construction
18 Aug 2017 The problem with memory
06 Aug 2017 More Laser Cut Parts
24 May 2016 Sequencing & Control Test
01 Jan 2016 Controller Construction: MOV-8, ALU and SETAB
08 Jul 2015 Sequencer Construction: 8-cycle FSM
07 Jun 2015 Decoder Construction: MOV-8, ALU & SETAB
16 May 2015 Register Construction: Completed Instruction Register Full Test
19 Aug 2014 ALU & Registers A-D Test with new Display Cards
28 Jun 2014 Register Construction: Completed A and D 8-bit Registers Full Test
26 May 2014 Register Construction: Completed B and C 8-bit Registers Full Test
30 Mar 2014 Completed ALU
16 Mar 2014 ALU Construction: Completed Control Card Full Test
23 Feb 2014 ALU Construction: Completed Arithmetic Card Full Test
21 Jan 2014 ALU Construction: 1-bit Arithmetic Full Construction
18 Dec 2013 ALU Construction: Completed Logic Card Full Test
12 Dec 2013 ALU Construction: 8-bit Logic Unit Tests
07 Dec 2013 ALU Construction: 1-bit Logic Full Construction
06 Dec 2013 ALU Construction: LED Tests
02 Dec 2013 ALU Construction: Connectors and LEDs
31 Oct 2013 It begins