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.

User Manuals

IMSAI User Manuals generally come with fold-out schematics and other diagrams, but many of the online 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.

• 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.
• PIO 6: 8255-Based Parallel I/O Board.
• UCRI: First-Generation cassette interface.
• VDM: First-Generation Video Controller.
• VIO-A, VIO-B, VIO-C, VIO-D: Memory-mapped Video Board.

Firmware Chips or Images

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.

Boards

Complete boards as well as bare boards are desired.

• DIO-A, DIO-B, DIO-C, DIO-D: Memory-Mapped Floppy Disk Controller.
• FIF (IFM/FIB): First-Generation Floppy Disk Controller. Fine if it’s the FIB board only.
• 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.
• 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-16, RAM-32, RAM-64: First-Generation Dynamic RAM Boards. We already have documentation. Just need boards.
• RAM III: Second-Generation Dynamic RAM Board.
• MABP-3, MAPT-6, BB: Shared Memory Facility.
• PIO 6: 8255-Based Parallel I/O Board. Need documentation & schematic and boards.
• UCRI: First-Generation cassette interface.
• VDM: Fir: First-Generation Video Controller.
• VIO-A, VIO-B, VIO-C, VIO-D: Memory-mapped Video Board.

Peripherals

We’re just getting started on the list of peripherals we need. This list is neither complete or accurate.

• IMSAI Calcomp 140 system
• IMSAI Calcomp 142 system
• Calcomp 140 and 142 drives
• Persci drives?
• IKB-1
• IKB-2 (VDP 80)
• IKB-3