m_thompson
Veteran Member
The RICM just received an IMSAI 8080 donation. It contains a Cromemco ZPU, two early IMS Associates 4k static RAM boards from 1975, and IMS Associates PIO board from 1975, and an IMSAI SIO board from 1976.
We need will need get three blue switch handles, but it is otherwise in good physical condition. It has a power harness for an external device that looks like it was an 8" floppy diskette drive.
We will clean it, reform the power supply capacitors, removed the boards, power it on, and see if the power supply regulates. If so, then we can install the CPU and RAM and see if the front panel is alive.
If we replace the RAM boards with something newer and larger and add floppy diskettes, it should make a nice system.
We haven't found a schematic or manual for the early 4k IMSAI RAM boards yet. Any ideas?
Pictures of everything are here: https://www.ricomputermuseum.org/collections-gallery/small-systems-at-ricm/imsai-8080
We need will need get three blue switch handles, but it is otherwise in good physical condition. It has a power harness for an external device that looks like it was an 8" floppy diskette drive.
We will clean it, reform the power supply capacitors, removed the boards, power it on, and see if the power supply regulates. If so, then we can install the CPU and RAM and see if the front panel is alive.
If we replace the RAM boards with something newer and larger and add floppy diskettes, it should make a nice system.
We haven't found a schematic or manual for the early 4k IMSAI RAM boards yet. Any ideas?
Pictures of everything are here: https://www.ricomputermuseum.org/collections-gallery/small-systems-at-ricm/imsai-8080