examples

Name	Last modified	Size
../
acr/	24-Oct-2026 15:37	—
cadzilla/	24-Oct-2026 15:37	—
cdos/	24-Oct-2026 15:37	—
cpnet/	24-Oct-2026 15:37	—
d7a/	24-Oct-2026 15:37	—
dazzler/	24-Oct-2026 15:37	—
diskbasic/	24-Oct-2026 15:37	—
fdcplus/	24-Oct-2026 15:37	—
fujinet/	24-Oct-2026 15:37	—
hdsk/	24-Oct-2026 15:37	—
icom/	24-Oct-2026 15:37	—
mpm2/	24-Oct-2026 15:37	—
newtech/	24-Oct-2026 15:37	—
pb1/	24-Oct-2026 15:37	—
ps2int/	24-Oct-2026 15:37	—
sdsys/	24-Oct-2026 15:37	—
sol-20/	24-Oct-2026 15:37	—
tarbell/	24-Oct-2026 15:37	—
uio/	24-Oct-2026 15:37	—
README.pdf	24-Oct-2026 15:37	153.6 KB
SHA256SUMS	24-Oct-2026 15:37	26.9 KB

altairsim machine examples

Machines that boot. Each directory here is self-contained: a .toml that describes the machine, the media it needs lying beside it, and a note saying what you will see. Copy any one of them anywhere and it still runs — a path inside a machine file resolves against that file, not against the directory you launched from.

Each directory has its own README.md (also distributed as README.pdf) saying what the machine is and what to type. Each directory also holds a <dir>.zip containing all of its files, so you can download that one file instead of the files one by one. You do not need both. Launch a machine by naming its machine file from inside its directory:

cd examples/acr
altairsim mitstapes.toml

These machines need the altairsim simulator.

What's new in 1.3.5

New machines:

fujinet/: CP/M 2.2b with a FujiNet WiFi adapter. The example builds the FujiNet tools from source and carries them to your own disk.
d7a/: MUSIC3 on a Cromemco D+7A, and a CP/M machine that builds it from source.
pb1/: burn a 2708 or 2716 EPROM with an SSM PB1 board.
mpm2/: MP/M II 2.1 with two consoles.
cpnet/: CP/NET 1.2 on two Altairs, an MP/M II server and a CP/M 2.2 requester.
ps2int/: MITS Programming System II from cassette, with the source for its bootstrap loader.

Changes:

tarbell/: new CP/M 2.2 disk images.
New versions of the host bridge utilities W.COM, R.COM and HDIR.COM on the 14 disk images that have them. cdos.toml now has the host bridge board.
Each directory now has Markdown summaries of the board and operating system manuals.

Disk systems

	What it is
`cdos/`	CDOS 2.58, the CP/M 1.4 work-alike of Cromemco, on a Cromemco 16FDC with its own boot PROM, from an 8″ mixed-density diskette (`cdos.toml`). `A.`
`cpnet/`	CP/NET 1.2 on two Altairs with 88-DCDD 8″ floppies, joined by port B of each 88-2SIO: an MP/M II server (`server.toml`, or `server-ss1.toml` with a CompuPro System Support 1 in place of the 88-VI/RTC) and a CP/M 2.2 requester (`requester.toml`) whose drive B: is drive A: of the server. Start the server first. `0A>` on the server, `A>` on the requester.
`diskbasic/`	Altair Disk Extended BASIC 4.1 on an 88-DCDD 8″ floppy, loaded by the DBL boot PROM (`diskbasic.toml`). `OK`
`fdcplus/`	CP/M 2.2b on an FDC+: from a serial drive server (`fdcplus-type7.toml`) or on the FDC+'s 1.5 MB floppy (`fdcplus-type5.toml`).
`fujinet/`	CP/M 2.2b on an 88-DCDD 8″ floppy, with a FujiNet WiFi adapter on the second channel of an 88-2SIO: `FUJIDIR`, `FUJIGET`, `FUJIPUT` and `WGET` reach a TNFS server or a web address (`fujinet.toml`). The example builds the tools from source, and carries them to your own disk. Name your serial device first. `A>`
`hdsk/`	CP/M 2.2 booting off an Altair 88-HDSK "Datakeeper" hard disk — an outboard controller moving whole sectors over an 88-4PIO — loaded by the HDBL PROM. `A0>`
`icom/`	CP/M 2.2 and iCOM's own FDOS on an iCOM FD3712/FD3812 8″ floppy controller: single-density CP/M (`cpm22.toml`), double-density CP/M (`cpm22-3812.toml`), FDOS-III (`fdos-iii.toml`) and FDOS-I (`fdos-i.toml`). `A>` for CP/M, `!` for FDOS.
`mpm2/`	MP/M II 2.1, the multi-user system of Digital Research, on an Altair with 88-DCDD 8″ floppies, an 88-2SIO with two consoles and an 88-VI/RTC for the tick (`mpm2.toml`), or a CompuPro System Support 1 for the tick and the date (`mpm2-ss1.toml`). The disk boots into MP/M II with no CP/M. `0A>` on console 0, `1A>` on console 1 through `telnet localhost 8820`.
`sdsys/`	SDOS 1.8B and SD Systems CP/M 2.2 on an SD Systems SBC-200 Z80 single-board computer with a VersaFloppy II (`sdos.toml`, `cpm.toml`), the monitor alone (`sbc200.toml`), and a VDB-8024 video console (`sbc200v.toml`, `sdosv.toml`). Press Enter, then `C`. `[A]` for SDOS, `A>` for CP/M.
`tarbell/`	CP/M 2.2 that boots itself off a Tarbell floppy controller and its own 32-byte boot PROM: single density (`tarbell.toml`, `tarbell` #1011) and double density, with and without DMA (`tarbelldd.toml`, `tarbelldd-dma.toml`).

Tape, storage and I/O boards

	What it is
`acr/`	Mike Douglas's MITS Tapes CP/M disk and WRTAPE, the utility that writes any of the MITS distribution BASICs back out through an 88-ACR — a bootable audio cassette you can then load on `basic4k` / `basic8k` / `ps2`, or on real hardware.
`pb1/`	An SSM PB1 2708/2716 EPROM programmer board and the SSM 8080 System Monitor: SSM's own burner programs from the PB1 manual burn a chip, and `SAVE` writes it out as an Intel HEX file (`pb1.toml`). `.`
`ps2int/`	MITS Programming System II from cassette: the monitor loads off an 88-ACR tape, and the editor, the assemblers and the debugger load from their tapes. An 88-VI/RTC gives the console an interrupt, so after `OPN ABS,AC` Ctrl-C stops a search of the cassette (`ps2int.toml`). `?`
`uio/`	Altair 8K BASIC 3.2 from a cassette through one 88-UIO board, which is the console and the cassette interface in one (`uio.toml`). `OK`

Graphics and games

	What it is
`cadzilla/`	The CADzilla graphics board's HD63484 ACRTC: `DRAWDEMO` shows every drawing command, one screen each, under CP/M.
`dazzler/`	A Cromemco Dazzler, 64×64 in 16 colors: Li-Chen Wang's Kaleidoscope, a pattern that wanders and recolors forever, DZMBASIC, Microsoft BASIC with `DZOP` graphics commands, under CP/M, the Dazzler games with joysticks and sound on a Cromemco D+7A, and Cromemco's GDEMO graphics demonstration.
`sol-20/`	A Processor Technology Sol-20 with 1977 cassette games: TREK80, ATC, PAC-MAN and RAIDERS, each loading itself from its tape.

Sound

	What it is
`d7a/`	MUSIC3, a four-voice player of "The Star Spangled Banner" through a Cromemco D+7A on a Z80 at 4 MHz (`music3.toml`), and a CP/M machine with M80 and L80 that builds it from source (`music3-build.toml`). `A>` for the build machine.
`newtech/`	A Newtech Model 6 Music Board, a 6-bit D/A converter and a speaker: Newtech's own player, MICROPLAY, plays the score from the manual of the board, Scott Joplin's "The Entertainer".