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O > OHIO SCIENTIFIC  > MODEL 500   


OHIO Scientific
MODEL 500

This board was used as a motherboard for the Challenger II.

Three Model 500 versions were sold:
500: The board.
500-1: Fully enclosed board with power supply, reset switch and two standard terminal connectors.
500-8: A 500 board in an eight slot Challenger case with power supply.

OHIO Scientific presented later an enhanced version called SuperKit. It was a 3 board-set with a Model 500 board without the serial interface, a video board, a 8 slot backplane board and a modified version of the BASIC ROM allowing a direct use of the video board. A TV set could be used with an optional RF aerial modulator


 

please i searche the spar part for this computer
osi (505 board and os65 v.3.3)
~~~~~~~~~~~~~~~~

          
Friday 25th July 2003
daniel (france)

 

NAME  MODEL 500
MANUFACTURER  OHIO Scientific
TYPE  Home Computer
ORIGIN  U.S.A.
YEAR  1977
CPU  6502
SPEED  1 MHz.
RAM  4 KB
ROM  8 KB
TEXT MODES  24 chars. x 24(?) lines
GRAPHIC MODES  None
COLORS  Monochrome
I/O PORTS  Tape, Monitor, 1 expansion slot
PRICE  Model 500: $298 - SuperKit: $398




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