Sunday, April 19, 2009

8085

Introduced March 1976
Clock rate 5 MHz
0.37 MIPS
Bus Width 8 bits data, 16 bits address
Depletion load NMOS logic
Number of Transistors 6,500 at 3 µm
Binary compatible downwards with the 8080.
Used in Toledo scale. Also was used as a computer peripheral controller - modems, harddisks,printers, etc...
CMOS 80C85 in Mars Sojourner, Radio Shack Model 100 portable.
High level of integration, operating for the first time on a single 5 volt power supply, from 12 volts previously. Also featured serial I/O,3 maskable interrupts,1 Non-maskable interrupt,1 externally expandable interrupt w/[8259],status,DMA.

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