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External Hardware IO Address Map: Difference between revisions
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* 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) | ||
* FF4C-FF4F [[Sardis Technologies 'no-halt' Controller] | * FF4C-FF4F [[Sardis Technologies 'no-halt' Controller|Sardis]] and [[J&M/Owl-Ware|JFD]] disk controllers | ||
* FF50-FF5F [[Glenside IDE Controller]] (first jumper option) | * FF50-FF5F [[Glenside IDE Controller]] (first jumper option) | ||
* FF50-FF54 [[MEGA mini MPI]] YMF-262 sound generator (gated via $FF7F) | * FF50-FF54 [[MEGA mini MPI]] YMF-262 sound generator (gated via $FF7F) | ||
Revision as of 18:24, 14 December 2022
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 range as well. Here are known IO addresses for add-on hardware. Built-in devices (such as the SAM, GIME, PIAs, etc) are not included.
- 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)
- FF4C-FF4F Sardis and JFD disk controllers
- FF50-FF5F Glenside IDE Controller (first jumper option)
- FF50-FF54 MEGA mini MPI YMF-262 sound generator (gated via $FF7F)
- FF50-FF5B MEGA mini MPI Serial UART B (gated via $FF7F)
- 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.