richardl64 / cpu

Homebrew CPU - assembler & support functionality

CPU

Homebrew CPU - assembler etc Probably forth based, a possible past where 6502 assembly had more support for a stack machine 16 bit

Names Histocially always used 'Lo4' - Lincoln Object Forth Recently prefer 'Throf' - Forth kindof backwards, i.e. like the word defining, lack of syntax, perhaps remove the reverse polish

Status Assembler basically working, no friendly error messages - drops to python Can sucessfully assemble microcode and the resulting assembler instructions defined by it

Lo4.numbers OSX Numbers file playing with ISAs instruction set implmentation etc.

asm.py Assembler instructions driven from microcode assembly Generates SREC format object files including some non standard label lines

microcode.asm Example microcode file defining the control word and instructions Assembling the microcode produces a .obj file which the assembler can consule

test.asm Assemlber test file, checking syntax and basic assembler functionality

sim.py Not working yet - embryonic microcode level simulation