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Homebrew CPU Wiki This main page is mostly a placeholder for now. To get editing permission, create an account and ping immibis on IRC. irc.libera.chat #cpudev

Getting started Essential knowledge: Introduction to digital logic Binary arithmetic How a computer works Designing and simulating a CPU: Getting started - Logisim Getting started - FPGAs Building a CPU in real life: Electronics primer Getting started - logic chips Getting started - transistor circuits Getting started - relay circuits Basic CPU design Important design considerations: Programmer's model Harvard vs Von Neumann RISC vs CISC Number of bits Hardware design: Instruction encoding Data path ALU Control unit Software Emulator Assembly language C language Forth language Advanced topics Instruction set extensions: Exceptions and interrupts Floating-point unit Virtual memory Performance tricks: Instruction prefetching Pipelining Branch prediction Data cache Out-of-order execution Register renaming

Logic references Relay logic Logic level reference Logic chip reference External interfaces UART I2C / SPI VGA PS/2 (mouse and keyboard) Ethernet USB CPU projects Big Mess of Wires Magic-1 Megaprocessor Monster 6502 Paul Law's relay computer ZipCPU