writing - visual - misc - huh?
on a recent trip to saskatoon i saw the intel-80/85 family user's manual on my brother's bookshelf. after browsing through it, wondering what the hell he was doing with the 1979 user guide, he surprised me by pulling the board out of his closet. it's a board i haven't seen since i was a kid, at which time i didn't know was an intel (since this is pre-pc days the brand intel would have been entirely meaningless to me anyway).
here's a blurb about it from the antique chip collector's site:
The 8085 was the follow-on processor to the very successful Intel 8080A processor. The 8085 got its name because it was Intel's first 5 volt microprocessor. The 8085 was 100% software compatible with the 8080A with increased systems performance. The initial 8085's were based on NMOS technology and the later "H" versions were based on HMOS technology.
The 8085 incorporated all the features of the 8224 (clock generator) and the 8228 (system controller) increasing the level of system integration. The 8085 along with and 8156 RAM and 8355/8755 ROM/PROM constituted a complete system. The 8085 used a multiplexed Data Bus and required the 825X-5 support chips. The address was split between the 8-bit address bus and 8-bit data bus. The on-chip address latch of 8155/8355/8755 memory chips allowed a direct interface with the 8085.
ah, the tedious hours spent programming that mother to do the most trivial of tasks. still, probably one of the biggest reasons i became fascinated with computer technology.
