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EQUITY II MCY BOARD Y147201000 REV. 01 & 02 JUMPER CONFIGURATIONS
MCY
board
Y147201000
revision
01
and 02
differences.
Revision 02 MCY
boards have the
following
improve-
ments over the 01
revision MCY 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.
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.
An 8087 will function concurrently with dynamic RAM boards on
Rev. 02 boards with the jumpers in position 2.
*
J1
and J2 should be in position
V30 runs about 20% faster in this position.
Rev. 01 MCY board.
* J3 and J4 are not available on these versions of MCY board.
Non-Epson
JUMPER
keyboards
cannot
----- Page 4 of 6 -----
Reset
Dip Switch
CONFIGURATIONS
1
to disable DMA RAM refresh. The
be
used.
Vol. Keyboard
8087-2 enabled on