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: Difference between revisions
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= External Hardware IO Address Map = | = External Hardware IO Address Map = | ||
Tandy designated IO addresses from $FF60 to $FF7F for add-on hardware, but several parties chose to build in the $FF40-$FF5F | Tandy designated IO addresses from $FF60 to $FF7F for add-on hardware, but several parties chose to build in the $FF40-$FF5F and $FF80-FF8F ranges as well. Here are known IO addresses for add-on hardware. | ||
* FF40-FF4B Floppy Disk Controllers. See [[Hardware#Floppy_Disk_Controllers]] for list. | * FF40-FF4B Floppy Disk Controllers. See [[Hardware#Floppy_Disk_Controllers]] for list. | ||
* FF40-FF4B [[MEGA mini MPI]] Serial UART A (gated via $FF7F) | * FF40-FF4B [[MEGA mini MPI]] Serial UART A (gated via $FF7F) | ||
* FF40-FF45 [[MEGA mini MPI]] Extended MPI Features (gated via $FF7F) | * FF40-FF45 [[MEGA mini MPI]] Extended MPI Features (gated via $FF7F) | ||
* FF40-FF41 [[Game Master Cart]] | |||
* FF40-FF7F [[FHL Eliminator]] Dual Serial Ports (exact 8 byte range selected with jumpers, FF60-FF67 standard) | |||
* FF40-FF7F [[FHL Eliminator]] HCA, RTC, Printer Port (exact 8 byte range selected with jumpers, FF70-FF77 standard) | |||
* FF41-FF42 Becker Port used by [[CoCo3FPGA]] and some emulators for [[DriveWire]] access | |||
* FF4C-FF4F Some third party Floppy Disk Controlers: [[Sardis Technologies 'no-halt' Controller|Sardis]], [[J&M/Owl-Ware|JFD]], [[Disto Super Disk Controller]], and [[Disto Super Disk Controller II]] | * FF4C-FF4F Some third party Floppy Disk Controlers: [[Sardis Technologies 'no-halt' Controller|Sardis]], [[J&M/Owl-Ware|JFD]], [[Disto Super Disk Controller]], and [[Disto Super Disk Controller II]] | ||
* FF50-FF5F [[Glenside IDE Controller]] (first jumper option) | * FF50-FF5F [[Glenside IDE Controller]] (first jumper option) | ||
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* FF59 [[Cloud-9 miniFLASH]] default address, modified with jumpers | * FF59 [[Cloud-9 miniFLASH]] default address, modified with jumpers | ||
* FF60-FF62 [[X-Pad Model GT-116]] | * FF60-FF62 [[X-Pad Model GT-116]] | ||
* FF64-FF67 [https://www.go4retro.com/products/cocoflash/ Retro Innovations CoCoFLASH] | |||
* FF68-FF6B [[Deluxe RS232 Pak]] | * FF68-FF6B [[Deluxe RS232 Pak]] | ||
* FF68-FF6B [https://github.com/barberd/cocousbserial CoCo USB Serial Cartridge] (default address, modified with dip switches) | |||
* FF68-FF6B [[CoCoIO]] (first jumper option) | |||
* FF6C-FF6F [[Direct Connect Modem Pak]] | * FF6C-FF6F [[Direct Connect Modem Pak]] | ||
* FF6E-FF6F [[MIDI Maestro]] | |||
* FF70-FF7F [[Glenside IDE Controller]] (second jumper option) | * FF70-FF7F [[Glenside IDE Controller]] (second jumper option) | ||
* FF70-FF73 [https://github.com/barberd/coco9511pak Am9511 Arithmetic Processor Unit Pak] (default address, modified with dip switches) | |||
* FF74-FF75 [[Cloud-9 TC^3 SCSI Interface]] default settings, modified with jumpers | * FF74-FF75 [[Cloud-9 TC^3 SCSI Interface]] default settings, modified with jumpers | ||
* FF74-FF77 [[Disto Super Disk Controller II]] | * FF74-FF77 [[Disto Super Disk Controller II]] | ||
* FF7A-FF7B [[Orchestra-90 CC (26-3143)]] | * FF7A-FF7B [[Orchestra-90 CC (26-3143)]] | ||
* FF78-FF7B [[CocoIO]] | * FF78-FF7B [[CocoIO]] (second jumper option) | ||
* FF78-FF79 & FF7C [[Cloud-9 SuperIDE Interface]] Real Time Clock | * FF78-FF79 & FF7C [[Cloud-9 SuperIDE Interface]] Real Time Clock | ||
* FF7D-FF7E [[Speech/Sound Cartridge (26-3144A)]] | * FF7D-FF7E [[Speech/Sound Cartridge (26-3144A)]] | ||
* FF7F [[Multi-Pak]] Slot Selection Register | * FF7F [[Multi-Pak]] Slot Selection Register | ||
* FF80-FF84 [https://colorcomputerarchive.com/repo/Documents/Manuals/Applications/Super%20Voice%20(Speech%20Systems).pdf Speech Systems Super Voice] | |||
* FF86-FF87 [https://github.com/barberd/cocousbhost CoCo USB Host] (default address, modified with dip switches) | |||
* FFE0-FFE9 & FFEF [https://thezippsterzone.com/2019/03/27/gime-x/ GIME-X for CoCo 3] | |||
Note some devices overlap each other; these devices will conflict and cannot be used together without modification. | Note some devices overlap each other; these devices will conflict and cannot be used together without modification. | ||
Built-in IO devices (such as the PIAs ($FF00-FF3F), CoCo3 GIME ($FF90-FFBF), and SAM ($FFC0-FFDF)) also take the IO space. The 6809/6309 CPU uses $FFF0-FFFF for interrupt vectors. | |||
Latest revision as of 02:16, 23 February 2025
External Hardware IO Address Map
Tandy designated IO addresses from $FF60 to $FF7F for add-on hardware, but several parties chose to build in the $FF40-$FF5F and $FF80-FF8F ranges as well. Here are known IO addresses for add-on hardware.
- FF40-FF4B Floppy Disk Controllers. See Hardware#Floppy_Disk_Controllers for list.
- FF40-FF4B MEGA mini MPI Serial UART A (gated via $FF7F)
- FF40-FF45 MEGA mini MPI Extended MPI Features (gated via $FF7F)
- FF40-FF41 Game Master Cart
- FF40-FF7F FHL Eliminator Dual Serial Ports (exact 8 byte range selected with jumpers, FF60-FF67 standard)
- FF40-FF7F FHL Eliminator HCA, RTC, Printer Port (exact 8 byte range selected with jumpers, FF70-FF77 standard)
- FF41-FF42 Becker Port used by CoCo3FPGA and some emulators for DriveWire access
- FF4C-FF4F Some third party Floppy Disk Controlers: Sardis, JFD, Disto Super Disk Controller, and Disto Super Disk Controller II
- FF50-FF5F Glenside IDE Controller (first jumper option)
- FF50-FF54 MEGA mini MPI YMF-262 sound generator (gated via $FF7F)
- FF50-FF57 Disto Super Disk Controller
- FF50-FF59 Cloud-9 SuperIDE Interface Default Address Range, modified with jumpers
- FF50-FF5F Disto Super Disk Controller II
- FF50-FF5B MEGA mini MPI Serial UART B (gated via $FF7F)
- FF5A-FF5F CoCo PSG
- FF59 Cloud-9 miniFLASH default address, modified with jumpers
- FF60-FF62 X-Pad Model GT-116
- FF64-FF67 Retro Innovations CoCoFLASH
- FF68-FF6B Deluxe RS232 Pak
- FF68-FF6B CoCo USB Serial Cartridge (default address, modified with dip switches)
- FF68-FF6B CoCoIO (first jumper option)
- FF6C-FF6F Direct Connect Modem Pak
- FF6E-FF6F MIDI Maestro
- FF70-FF7F Glenside IDE Controller (second jumper option)
- FF70-FF73 Am9511 Arithmetic Processor Unit Pak (default address, modified with dip switches)
- FF74-FF75 Cloud-9 TC^3 SCSI Interface default settings, modified with jumpers
- FF74-FF77 Disto Super Disk Controller II
- FF7A-FF7B Orchestra-90 CC (26-3143)
- FF78-FF7B CocoIO (second jumper option)
- FF78-FF79 & FF7C Cloud-9 SuperIDE Interface Real Time Clock
- FF7D-FF7E Speech/Sound Cartridge (26-3144A)
- FF7F Multi-Pak Slot Selection Register
- FF80-FF84 Speech Systems Super Voice
- FF86-FF87 CoCo USB Host (default address, modified with dip switches)
- FFE0-FFE9 & FFEF GIME-X for CoCo 3
Note some devices overlap each other; these devices will conflict and cannot be used together without modification.
Built-in IO devices (such as the PIAs ($FF00-FF3F), CoCo3 GIME ($FF90-FFBF), and SAM ($FFC0-FFDF)) also take the IO space. The 6809/6309 CPU uses $FFF0-FFFF for interrupt vectors.