MediaWiki:Sitenotice:
2025-12-29: I have restored the wiki to a backup from the end of November. Starting in September 2025, accesses went form the 800MB-1.2GB range per month to 26GB in September, 42GB in October, and 70GB in November with most accesses originating from China. As soon as I realized what was causing all the access problems in November, I shut it down (it had reached 36GB by then) behind a password/login screen. The database had gotten corrupted, and I tried a restore from just before the spike in access but that didn't work. Thus, end of November. I still have the other daily backups so if there were any important additions in December, let me know and maybe they can be recovered. - Allen H.
External Hardware IO Address Map
External Hardware IO Address Map
Add-on hardware typically uses an IO address from $FF60 to $FF7F. Here are known IO addresses.
- FF40-FF4B Floppy Disk Controllers. See Hardware#Floppy_Disk_Controllers for list.
- FF4C-FF4F Some third-party disk controllers, such as those made by DMC and JFD.
- FF50-FF5F Glenside IDE Controller (first jumper option)
- FF60-FF62 X-Pad Model GT-116
- FF68-FF6B Deluxe RS232 Pak
- FF6C-FF6F Direct Connect Modem Pak
- FF70-FF7F Glenside IDE Controller (second jumper option)
- FF74-FF77 [[Disto Super Disk Controller II]
- FF7A-FF7B Orchestra-90 CC (26-3143)
- FF78-FF7B CocoIO
- FF7D-FF7E Speech/Sound Cartridge (26-3144A)
- FF7F Multi-Pak Slot Selection Register
Note some devices overlap each other; these devices will conflict and cannot be used together without modification.