- Apple II History
- ROM 4x (Improved Apple //c (ROM 4X) and Apple IIc Plus (ROM 5X) firmware)
- Apple II assembly programming: Merliln assembler
- Apple IIe documentation (pdf)
- Forum Apple II computers
- Summary of Apple II Monitor Commands
- Apple IIgs
- The Apple ][ Ethernet Card
- RS232 Apple IIc ADT Pro cable
- AppleIISD: SD card based ProFile replacement for IIe (github)
- WUDSN (a free integrated Apple II, Atari 2600, Atari 7800, Atari 8-bit, C64 and NES development plugin for Eclipse)
- Price list OCT1977 (local mirror)
- Outlaw Editor (tool to create old-school style role-playing games, mainly graphics!?)
- Some AppleIIGS software
Floppy disk links
- Apple II 13 sector disk
- Floppy disk drivers FAQ
- Service disk drives
- Floppy drives models
- Hand made WOZ Disk controller
- Finding a DB-19, Angering the Internet
- SmartportCFA arduino
- AppleBox DISK II service [pdf] (local mirror 20200301)
The disk formatting code of Apple DOS 3.1 / 3.2 does something fairly odd: It writes only the sector headers, with no sector bodies. Any particular sector’s body is created the first time that particular sector has data written to it. This means that on such disks it is normal for unused sectors to be “bodyless”Reference: https://forum.kryoflux.com/viewtopic.php?f=4&t=279
DOS and ProDOS
News and forum posts
- How does the Apple II address more than 128KB of RAM?
- Is all 100% of a 64k Apple II memory usable?
- Announcing ProDOS 2.4.1 for all Apple II and compatible computers
- ProDOS 2.4.2 (January 18, 2018)
- Why are some soft switches on the Apple II only triggered with a write?
- Apple II won’t boot into BASIC (SOLVED)
- How did the Apple II forward binary instructions to the Z80 software card with CPM?
- Apple II+ Disk Drive (Write/Align/Test — failure)
- The Australian Apple Review
- dead links?