User`s guide

EQUITY II MCY BOARD Y147205000 & Y147206000 JUMPER CONFIGURATIONS
MCY board Y147205000
and Y1472056000
differences.
MCY P/N Y147206000
boards have the
following improve-
ments over the
Y147205000 board.
* Serial port works
over 1200 baud.
* Concurrent oper-
ation of 8087 &
optional Dynamic
RAM or EGA/VGA.
* Topview fix in-
corporated on
MCY (main) board.
On
Batt
Off
Reset Dip Switch
Vol. Keyboard
II
JUMPER CONFIGURATIONS
* J1 and J2 should be in position 2 to enable DMA RAM refresh to the
option slots for expanded memory boards or EGA/VGA video boards.
The 8087 will work in DMA refresh mode with the Y147206000 board.
* J1 and J2 should be in position 1 to disable DMA RAM refresh.
The V30 runs about 20% faster in this position. The jumpers must be
in position 1 to enable an 8087 with the Y147205000 MCY board
* J3 and J4 should be in position 1 to use an IBM compatible keyboard.
* J3 and J4 should be in position 2 (default) for the Equity II
keyboard.
NOTE: DO NOT ATTEMPT TO USE THE EPSON KEYBOARD WITH JUMPERS J3 AND
J4 IN POSITION 1 AS DAMAGE MAY RESULT!
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