NationalSemi > NatSemiINS8080AN
Modified: May 30, 2005, 6:24 pm
Manufacturer:National Semiconductor
Speed:2 Mhz
Data Code:8652
Process:3 Micron
Architecture:8 bit
Used in:Altair 8800, IMSAI 8080, CompuColor II, Byte Computers Byt-8 and controllers
Description:Intel 8080 microprocessor is a successor to the
Intel 8008 CPU. To ease transition to the 8080
Intel made the new microprocessor source code
compatible with the 8008. Interrupt processing
logic didn't change from the 8008, which also
helped to port old software to the 8080
processor. The 8080 processor included many

Maximum memory size was expanded to 64 KB.

Stack size was no longer limited to 7 levels.

The number of I/O ports was increased to 256.

The processor included many new instructions and
direct addressing mode.