CPU control logic

The control logic is the heart of the CPU. It's what defines the opcodes the processor recognizes and what happens when it executes each instruction.

Videos

Notes

An alternative to soldering a USB cable for power is to use a DC wall plug with a screw terminal adapter (If you bought Kit #1 from me, you already have these). To create a more robust connection as described in the video above about power supply tips, you can use multiple wires like this:

Schematic

Also see the flags register part of the ALU schematic.

Data sheets

• 74LS00 Quad NAND gate
• 74LS04 Hex inverter
• 74LS161 4-bit binary counter
• 74LS138 3-to-8 line decoder/demultiplexer
• 28C16 16K EEPROM

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