ALU

The Arithmetic Logic Unit (ALU) is split into three units (and also three physical cards): the logic unit, the arithmetic unit and the control unit. The logic and arithmetic cards handle 8-bit logic and arithmetic functions respectively. The control unit handles function decoding, zero detection and holds the condition registers.

Details of the design, construction and testing of each unit can be found in the following posts:

  Design Construction Testing
Arithmetic Unit 1-bit Arithmetic Unit
8-bit Arithmetic Unit
Connectors and LEDs
LED Header Pins
Header Pins
Relay Sockets
1-bit Full Construction
Power Rails
Wire Wrap (Part 1Part 2)
LED Tests
1-bit Test
Full Test
Control Unit Function Decoder
Zero Detect
Condition Registers
Control Unit
Connectors and LEDs
LED Header Pins
Header Pins
Relay Sockets
Power Rails
Wire Wrap
LED Tests
Full Test
Logic Unit 1-bit Logic Unit
8-bit Logic Unit
Connectors and LEDs
LED Header Pins
LED Wire Links
1-bit Full Construction
Header Pins
Relay Sockets
Power Rails
Wire Wrap (Part 1Part 2Part 3)
LED Tests
1-bit Test
8-bit Test
Full Test

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