OpenBSD/amiga used to run on the Amiga machines manufactured by Commodore.
It used to require a Motorola 68020 or better processor, with an external
Motorola 68851 PMMU in case of a 68020.
This left out models 500, 600 and 1000 which cannot receive accelerator
boards.
The OpenBSD/amiga port was discontinued after the 3.2 release.
History:
The OpenBSD/amiga was initially derived from NetBSD/amiga in 1995, and
used to loosely track the NetBSD changes until 1998. Niklas Hallqvist also
wrote a new interrupt remapping system, improving average performance,
revamped the installation media, and ported the ISA bus support to a
big-endian platform, for GoldenGate II and CrossLink cards.
After a few years, due to the lack of users, this port was slowly left in
oblivion, although releases were still being made. Eventually, it was decided
to stop supporting it and remove the code from the tree.
Supported hardware:
Supported models
A1200 (requires an accelerator card with 68020+68851 or better)
A2000 (requires an accelerator card with 68020+68851 or better)
A3000
A4000
DraCo
PowerPC-based accelerator cards are not supported.
Supported peripherals
A4000/A1200 on-board IDE controller
ISA bridges
GoldenGate Bus+ (aka GG2)
CrossLink
ISA IDE and ATAPI with a supported ISA bridge
SCSI controllers
33c93 based boards: A2091, A3000 and GVP series II
53c80 based boards: 12 Gauge, IVS, Emplant and Wordsync/Bytesync
53c710 based boards: A4091, Magnum, Warp Engine, Zeus and DraCo
FAS216 based boards: FastLane Z3, Blizzard
Video controllers
ECS, AGA and A2024 built in on various amigas
Retina Z2 and Retina Z3
Picasso II
GVP Spectrum
Piccolo
A2410
Cybervision 64
oMnibus
Domino
Merlin
Ethernet
A2065
Hydra
ASDG
A4066
Ariadne I and II
Quicknet
Via a supported ISA bridge:
NE[12]000
SMC/WD 8003/8013/8216
3COM 3c503
Arcnet controllers
A2060
Serial ports
Amiga on-board serial port
DraCo on-board serial port
MultiFaceCard II and III
A2232
PC COM ports attached to a supported ISA bridge
Parallel ports
Amiga on-board parallel port
PC LPT ports attached to a supported ISA bridge
Amiga floppy drive
Amiga mouse
Amiga-compliant joysticks
Getting and installing OpenBSD/amiga:
The last supported OpenBSD/amiga release was
OpenBSD 3.2.