https://github.com/etchedpixels/fuzix-bintools

Assembler, linker etc to go with the compiler
https://github.com/etchedpixels/fuzix-bintools

Last synced: about 2 months ago
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Assembler, linker etc to go with the compiler

• Host: GitHub
• URL: https://github.com/etchedpixels/fuzix-bintools
• Owner: EtchedPixels
• License: other
• Created: 2024-02-25T19:32:50.000Z (11 months ago)
• Default Branch: main
• Last Pushed: 2024-11-19T17:22:07.000Z (about 2 months ago)
• Last Synced: 2024-11-19T18:32:12.811Z (about 2 months ago)
• Language: C
• Size: 720 KB
• Stars: 7
• Watchers: 5
• Forks: 5
• Open Issues: 0
• Metadata Files:
  • Readme: README.6502

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README

        
6502 support

Somewhat tested at this point as 6502 Fuzix is really only base level.

Suports the full 6502 instruction set. The syntax is fairly conventional but

might benefit from a few synonyms. Supports most of the 65C816 extensions

except for the 24bit addressing.

Addresses are assumed to be zp relative when a constant whose value is < 256

absolute, and the instruction has a zp form, otherwise absolute.

A symbol can be forced to be a type by defining it within that segment thus

	.zp

fred	.equ	32

creates a ZP based definition

	.absolute

fred	.equ	32

creates an absolute constant (non-relocating)

	.code

fred	.equ	32

creates a 16bit relocatable symbol relative to code space.

All the magic conversions assume ZP is 0.

As with 680X the use of '@' in front of a symbol forces it to be ZP

To Add

======

2A03

65CE02

65C816 24bit

The ability to specify where ZP is (and we need somewhere to tag that in the

object file format and linker!)

The ability to refuse to do ZP co-oercions for 65c816