All Points Bulletin!
As we work on supporting our legacy products, we are on the lookout for software diskettes, EPROM and PROMs, manuals, schematics,
and even a few boards and peripherals. We need your help to preserve the entire IMSAI legacy. If you have something listed here, please
contact us.
Complete boards as well as bare boards are desired.
Let us know if you have something obscure that’s not listed here. A PROG-8, for example.
- DIO-A, DIO-B, DIO-C, DIO-D: Memory-Mapped Floppy Disk Controller.
- EXT: Extender board.
- FIF (IFM/FIB): First-Generation Floppy Disk Controller. Fine if it’s the FIB board only.
- GP-88: General purpose prototype board.
- HD-10: Hard Disk Controller.
- IMM: Intelligent Memory Manager. We don’t think it was ever seen outside of engineering.
- LIF (IFM/LIB): Line Printer Controller. Fine if it’s the LIB board only.
- MABP-3, MAPT-6, BB: Shared Memory Facility.
- MDIO: Minifloppy Disk Controller.
- PIO 6: 8255-Based Parallel I/O Board. Need documentation, schematic, and boards.
- PROM 4: 4K 1702 EPROM Board.
- PROM 16: 16K 2708 EPROM Board. We don’t think it was ever released.
- RAM-16, RAM-32, RAM-64: First-Generation Dynamic RAM Boards. We already have documentation. Just need boards.
- RAM III: Second-Generation Dynamic RAM Board.
- SIOC: SIO 2 piggy-back baud clock board.
- UCRI: First-Generation cassette interface.
- VDM: Fir: First-Generation Video Controller.
- VIO-A, VIO-B, VIO-C, VIO-D: Memory-mapped Video Board.
IMSAI software came on paper tape, cassette, EPROM (1702As), ane diskette. We prefer original media, but images like HEX or binary files or even ZIP file are acceptable.
- PGM-1A: Self-contained system. Came in all four media.
- PGM-2A: Tape cassette opertaing system. Came in everything except paper tape.
- PGM-3A: Bootstrap for DOS-A. Came on EPROM.
- PGM-4A: Bootstrap loader for paper tape. Came on EPROM.
- PGM-5A: Bootstrap loader for tape cassette. Came on EPROM.
- PGM-6A: Advanced self-contained system. Came in all four media.
- BASIC-4A: 4K BASIC. Came in all 4 media.
- BASIC-8A: 8K BASIC. Came in all 4 media.
- BASIC-9A: 8K BASIC with MIO tape cassette source program storage. Came in all 4 media.
- BASIC-12A: 12K BASIC. Came in all 4 media.
- DOS-A: Floppy disk operating system on diskette.
- IMDOS 2.05: IMSAI's extensions of CP/M 1.3. Like CP/M 2.2, but incompatible filesystem.
- IMDOS 2.06: IMSAI's extensions of CP/M 1.3. Like CP/M 2.2, but incompatible filesystem.
- IMDOS II: Hard Disk support added.
We’re just getting started on the list of peripherals we need. We hope to be straightening it out soon.
- BBC: Breadboard Console
- FDC2-1 or FDC2-2: Calcomp 140 in a cabinet
- IKB-1: Intelligent Keyboard
- IKB-2 (VDP 80)
- IKB-3
- PCS-80/25 or PCS-80/26: Calcomp 142 in a cabinet
- Calcomp 140 and 142 bare drives
- Persci drives?
IMSAI User Manuals generally come with fold-out schematics and other diagrams, but many of the on-line copies do not because the folks scanning them lack the ability to scan 11×17 pages. The manuals requested here should include the schematics and diagrams if possible.
Let us know if you have something obscure that’s not listed here. A PROG-8, for example.
- DIO-A, DIO-B: Memory-Mapped Floppy Disk Controller.
- HD-10: Hard Disk Controller.
- IMM: Intelligent Memory Manager. We don’t think it was ever seen outside of engineering.
- LIF (IFM/LIB): Line Printer Controller.
- MDIO: Minifloppy Disk Controller.
- PROM 4: 4K 1702 EPROM Board.
- PROM 16: 16K 2708 EPROM Board. We don’t think it was ever released.
- RAM III: Second-Generation Dynamic RAM Board.
- MABP-3, MAPT-6, BB: Shared Memory Facility.
- PCS-80/10, 11, 14, 15, 25, 26, 30, 34, and 35:
IMSAI Personal Computing System.
We have the 80/15, but the 11×17 schematics are missing.
We have the 80/30, but the VIO schematics are pretty bad.
- PIO 6: 8255-Based Parallel I/O Board.
- UCRI: First-Generation cassette interface.
- VDM: First-Generation Video Controller. The number of units shipped is unknown.
- VIO-A, VIO-B, VIO-C, VIO-D: Memory-mapped Video Board.
Sometimes we get boards without firmware or other programmable devices. Actual chips or even hex files are welcome!
- DIO-A, DIO-B: Memory-Mapped Floppy Disk Controller. We need firmware and PCMP bipolar PROM images.
- HD-10: Hard Disk Controller.
- IMM: Intelligent Memory Manager. We don’t think it was ever seen outside of engineering.
- LIF (IFM/LIB): Line Printer Controller. Need IFM firmware.
- MDIO: Minifloppy Disk Controller.
- MABP-3, MAPT-6, BB: Shared Memory Facility.
- VDM: First-Generation Video Controller.
While we have many original cables and/or their drawings, we are missing a few.
- CABLE H: 18 in (450 mm) flat cable for Shared Memory Facility.
- CABLE L: 18 in (450 mm) coax cable to connect VIO board to cabinet back frame.
- CABLE M: 18 in (450 mm) coax cable to connect MIO board cassette port to back frame. Terminates in a miniature phone jack. Internal cable.
- CABLE P: 40-pin cable to Calcomp drive from FPS-U.
If you have any of these (originals preferably), we will be happy to scan and return them to you at our expense, plus a little for your time.
- The IMSAIder Vol. 1, No. 2, 3, 4, and 5. These were the newsletters that ran for five issues. We have No. 1, but it’s a photocopy. Any original issues are definitely sought after!
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