opcodetools 1.5

Description:

opcodetools 1.5

Opcode Tools
Known CPUs

6502
6803
6809
8052
DVG (Atari vector generator used in OmegaRace, Asteroids, etc)
Z80
Z80GB (Z80 variant used in the Nintendo GameBoy)

Disassembler
py -m opcodetools.dasm Z80 0 "test1.bin+test2.bin"


CPU
Origin
One or more files that make up the binary

Assembler
py -m opcodetools.asm hello.asm

See the Example Input below.
The assembler recognizes four different kinds of text lines:

A blank line (ignored)
A label: a single word/number ending with a ":"
A directive: a line beginning with a "."
Everything else is a line of assembly opcodes

Comments
LD A,5 ; Five rows per object

Everything after a ";" on a line is ignored as a comment. Lines that begin
with a ";" are seen as blank lines (ignored).
Includes
.include hardware.asm

Key/Value Constants
._CPU = Z80
.CONST_A = 0x20

KEY = VALUE pairs. Keys that begin with "_" are meant for the assembler.
Data Definition
Bytes
. 0x01,2,3,4,0x05

Words
.word 0x01,0x1234

Example Input
; Example assembly input

.include hardware.asm

._CPU = Z80
.CONST_A = 0x20

0x8000:
Start:

LD A,0x23 ; constant
LD A,(0x10) ; memory location
LD HL,(DataB) ; memory location
LD HL,DataA ; constant
LD E,CONST_A ; constant
JP Start

DataA:
. 0x10,0x20,0x30

DataB:
. 0x40,0x50