IMSAI 8080
Microcomputer System
Specifications
MICROCOMPUTER SYSTEM SPECIFICATIONS
Processor: 8080A microcomputer chip
Directly Accessible Memory: 65,536 words
Word Size: 1 byte (8 bits)
Register Instruction Cycle Time: 2 microseconds
Basic Machine Cycle Time: 0.5 microseconds
Directly Accessible Input and Output Ports: 256
Machine Instruction Set Size: 78 basic instructions
(181 instructions with variants)
Nested Subroutine Call Capability: Limited only by memory
size
Interrupt Capability: 8 hardware levels
Registers: 6, plus stack pointer, program counter and
accumulator
Memory Type: Semiconductor (1024x1 format chips)
Cabinet: Custom aluminum case with acrylic front panel
Dimensions: 1 9 V x 17" x 7"
Weight: 40 pounds
Front Panel Switch Type: Paddle
Color: IBM blue and grey
Power: 28 amp unregulated power supply with onboard regulators
Power Requirement: Under 50 watts for basic system
Maximum Power Capability: Up to 500 watts
Power Type: 115 VAC, 60 hz. single phase
Connections: Mounting space for 10 EIA-type 25-pin connectors
on the back panel. Opening and cable clamp provided for
flat cables to exit from the cabinet. 3M flat cable
system used throughout.
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