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OSU8 Microprocessor
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8-bit ALU, All Data Operations

This ALU performs all 16 of the math operations that the microprocessor can execute betweeen the A and B registers. Please refer to the detailed description of the ALU circuity works.

Most of the green symbols on this page are links to their associated schematic.

Schematic Drawing Zero Accumulator Complement Accumulator 8-Bit AND 8-Bit OR Zero B Complement B Shifter 8-Bit 3:1 Mux 8-Bit Adder 2:1 Mux N & Z Bits Decode Logic


OSU8: Simple 8-Bit Microprocessor Design; Paul Stoffregen
http://www.pjrc.com/tech/osu8/sch/alu.html
Last updated: February 24, 2005
Status: These pages are a work-in-progress
Comments, Suggestions: <paul@pjrc.com>
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