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More Schematic Work

A project log for 8 Bit Breadboard CPU

A home-brew 8 bit Microprocessor built on a breadboard 64K Address Space, IRQ, and DMA 16 Bit Stack Pointer, 4 8 bit Registers or 2 16 bit

2-zons2-Zons 12/09/2018 at 01:161 Comment

Cleaned up the 16 bit register schematic quite a bit.  Getting better with the upverter software.

https://upverter.com/2-Zons/2bdc142f8f99588f/16-bit--Dual-8-Bit-register-with-Up--Down-/

Implemented the fast carry in the ALU for the flag and at bit 4.  Didn't change the  4 bit D-type registers to 8 bit ones as I don't have those chips.  I'm not going to order more chips till I flesh out the schematics.  Keep shipping costs to a min.  Hopefully I will only need one more order to get all the parts I need.

https://upverter.com/2-Zons/2f903c2bed9cef6d/8-bit-ALU-w-input-and-output-registers/

Started the master schematic the ties all the modules together.

https://upverter.com/2-Zons/1a1b5dbb645ac3ba/8-Bit-TTL-CPU-built-on-a-breadboard/

Put png exports of the schematics up in the gallery.

Discussions

Yann Guidon / YGDES wrote 12/09/2018 at 11:42 point

It's getting pretty elaborated :-D

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