The 6502 Firmware Page
This site is mostly about the firmware -- software in ROM -- that
came with the original Apple II, not the II+, IIe, IIc, or IIgs. The
original Apple II had 4K of RAM and 8K of ROM. The ROM contains software,
such as the Monitor and Integer BASIC, appropriate for a SBC.
Red Book refers to the original Apple II Reference
Manual dated 1978.
WOZPAK refers to the WOZPAK II,
a publication by Call-A.P.P.L.E., an Apple II user group.
DDJ refers to Dr. Dobbs Journal, a computer magazine.
IA refers to Interface Age, a publication of the
SCCS (Southern California Computer Society).
SYM and AIM refer to early 6502 single board computers.
- Apple II ROM (12KB binary)
- Memory map of the Apple II ROMs
- Summary of Monitor Commands
- Red Book Monitor listing
- Woz on Integer BASIC
- Integer BASIC disassembly
- Red Book Sweet-16 listing
- WOZPAK Sweet-16 article by Steve Wozniak
- WOZPAK Sweet-16 article by Dick Sedgewick
- Red Book Mini-Assembler listing
- Red Book Floating point listing
- WOZPAK Floating point routines description
- DDJ Floating point article
- IA Floating point article
- Using 6502 Assembly Language by Randy Hyde
- ProDOS 8 Technical Reference Manual
- Apple Assembly Line:
Questions or comments? Email me at:
- 2000-09-01 -- Added AIM BASIC Language Reference Manual
- 2004-07-12 -- Added PL/65 manual and disassembly
- 2004-07-13 -- Added Woz notes on Integer BASIC and disassembly
- 2004-07-14 -- Added Apple Assembly Lines Oct80-Feb83
- 2004-07-18 -- Added ProDOS 8 Technical Reference Manual
- 2004-07-27 -- Added Randy Hyde's 6502 book