9.56.1 Command-line Options

-z80

Produce code for the Z80 processor. By default accepted undocumented operations with halves of index registers (IXL, IXH, IYL, IYH) and instuction IN F,(C). Other useful undocumented instructions produces warnings. Undocumented instructions may not work on some CPUs, use them on your own risk.

-r800

Produce code for the R800 processor.

-z180

Produce code for the Z180 processor.

-ez80

Produce code for the eZ80 processor in Z80 memory mode by default.

-ez80-adl

Produce code for the eZ80 processor in ADL memory mode by default.

-local-prefix=prefix

Mark all labels with specified prefix as local. But such label can be marked global explicitly in the code. This option do not change default local label prefix .L, it is just adds new one.

-colonless

Accept colonless labels. All names at line begin are treated as labels.

-sdcc

Accept assembler code produced by SDCC.

-fp-s=FORMAT

Single precision floating point numbers format. Default: ieee754 (32 bit).

-fp-d=FORMAT

Double precision floating point numbers format. Default: ieee754 (64 bit).

-strict

Accept documented instructions only.

-full

Accept all known Z80 instructions.

-with-inst=INST[,...]

-Wnins INST[,...]

Enable specified undocumented instruction(s).

-without-inst=INST[,...]

-Fins INST[,...]

Disable specified undocumented instruction(s).

-ignore-undocumented-instructions

-Wnud

Silently assemble undocumented Z80-instructions that have been adopted as documented R800-instructions .

-ignore-unportable-instructions

-Wnup

Silently assemble all undocumented Z80-instructions.

-warn-undocumented-instructions

-Wud

Issue warnings for undocumented Z80-instructions that work on R800, do not assemble other undocumented instructions without warning.

-warn-unportable-instructions

-Wup

Issue warnings for other undocumented Z80-instructions, do not treat any undocumented instructions as errors.

-forbid-undocumented-instructions

-Fud

Treat all undocumented z80-instructions as errors.

-forbid-unportable-instructions

-Fup

Treat undocumented z80-instructions that do not work on R800 as errors.

Floating point numbers formats.

ieee754

Single or double precision IEEE754 compatible format.

half

Half precision IEEE754 compatible format (16 bits).

single

Single precision IEEE754 compatible format (32 bits).

double

Double precision IEEE754 compatible format (64 bits).

zeda32

32 bit floating point format from z80float library by Zeda.

math48

48 bit floating point format from Math48 package by Anders Hejlsberg.

Known undocumented instructions.

idx-reg-halves

All operations with halves of index registers (IXL, IXH, IYL, IYH).

sli

SLI or SLL instruction. Same as SLA r; INC r.

op-ii-ld

Istructions like <op> (<ii>+<d>),<r>. For example: RL (IX+5),C

in-f-c

Instruction IN F,(C).

out-c-0

Instruction OUT (C),0