Status

This project is in its very early stage and the original purpose is mainly "for fun".

i8008 assembler

Usage:

i8008asm < source.asm > image.bin

• The assembler supports usual labels.
• The instruction parameter count is not checked, and address references are implicitely 2 bytes long. It is possible to refer to the low or high part of a symbol address by suffixing it with /L or /H respectively.
• Data can be appended using the .set keyword, as plain number or characters enclosed within single-quotes.
• The INP and OUT ports use a glued syntax appended with a slash character: ex OUT/0

Hello world example:

.org 0
JMP start ; reset vector [0]
.org 8
RET       ; IRQ vector [1]

.org 0x40
start:
	LLI hello/L
	LHI hello/H
	CALL print
	HALT
	JMP start

irq:
	RET

; HL points to the string
print:
	LAM
	CPI 0
	RTZ
	OUT/1
	CALL incHL
	JMP print

incHL:
	OUT/7
	LAL
	ADI 0x01
	LLA
	LAH
	ACI 0x00
	LHA
	INP/7
	RET

hello:.set 'hello!' 0xa 0

i8008 emulator

Usage:

i8008emu [-t] image.bin

• The memory space is 2K ROM, then 2K RAM.
• The provided image file is loaded as ROM
• With the -t flag, instructions are printed to stderr during execution