Imsai 8080

Imsai 8080 S-100 computer. The original on top, and retrofitted with a hexadecimal front panel from Wameco on the bottom (Dad's Imsai)

The Money Shot

The Money Shot as in how way to much money I spent to get these drives and the FIF FDC set. I now have four of the Calcomp floppy disk drives and an FIF FDC. Get ready, set - restore!

Dad's Imsai

This was my dad's computer. I recently rebuilt the power supply of dads original, I bought another Imsai computer off ebay to house the Wameco hexadecimal display front panel. I sent both of these front panels out to System Glitch for repair. I did the mechanical reinforcement of the switches on the Wameco FP1.

Archive.Org Byte Magazine Volume 02 Number 07 - Model Railroads

Archive.Org Byte Magazine Volume 00 Number 10 - The Game of LIFE in Color

Images

Pictured with original 8080 CPU card, an unknow manufacturer 8k RAM board and Martin Eberhard's post era 88-2SIOJP I/O and EPROM board.

FIF / VIO evaluation - restoration

I paid entirely to much on ePay for an Imsai 8080 but included FIF FDC board set with both the IFM and FIB boards as well as the interconnect ribbon cable and the ribbon cable to the drive enclosure. It came with an Imsai eight inch FDD cabinet with identical drives to the set I already have Imsai Floppy Disk

VIO

Udo Monk has a very nice video z80 pack simulation of the VIO

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  VIO front

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  VIO rear

FIF

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  FIB Front

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  FIB Rear

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  IFM Front

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  IFM Rear

Not pictured

• (2) Vector Graphic 16k static RAM vev 1
• Microbyte Memory M32KSS Rev a 32k RAM
• SIO
• MIO

Resources

• EZBOOTS.ASM ezboots.asm Automatic bootstrap simulator for starting cp/m
• IMSAI 8080 at Wikipedia.
• autometer.de Udo Munk stuff Lot's of Imsai goodies here.
• Kenneth Vaughn has some videos of the PCS-80
• IMSAI 8080 Feb 1976 Catalog

Manuals

• SIO2-2
• 8080 Manual
• PCS80-30 Users Manual
• VIO Manual
• MIO Rev 2
• IMSAI Schematics
• Imsai FDC notes and .ASM
• IMSAI CPM System Users Guide Version 1.31 Rev 2

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