riscygeek / cosmos-cp1

A small assembler & emulator for the Cosmos CP1 machine

Cosmos CP1

I found an old computer from the 80s.
It has 128 Words of RAM used by both the code and the data.
It also has a very simplistic reduced instruction set (RISC).
In the future I will add a picture of the original computer and it's instruction set

Instruction Set

name	opcode	description
HLT	01.000	Halts the processor
PRINT	02.000	Prints the contents of the accumulator
SLEEP	03.xxx	Sleeps for xxx milliseconds
LDC	04.xxx	Loads a constant into the accumulator
LDA	05.xxx	Loads the Contents of [xxx] into the accumulator
STA	06.xxx	Stores the Contents of the accumulator to [xxx]
ADD	07.xxx	Adds the Contents of [xxx] to the accumulator
SUB	08.xxx	Subtracts the Contents of [xxx] from the accumulator
JMP	09.xxx	Jumps to the address xxx
CMPE	10.xxx	Compares the accumulator to [xxx] for equality
JC	11.xxx	Jumps to xxx if last compare was true
CMPGR	12.xxx	Tests if the accumulator is greather than [xxx]
CMPLE	13.xxx	Tests if the accumulator is less then [xxx]
NEG	14.000	Negates the Contents of the accumulator
AND	15.xxx	Bitwise AND the accumulator with [xxx]
POUT	18.000	Writes the Contents of the accumulator to the Output port