User`s guide

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.
Reset Dip Switch Vol. Keyboard
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.
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 1 to disable DMA RAM refresh. The
V30 runs about 20% faster in this position.
8087-2 enabled on
Rev. 01 MCY board.
* J3 and J4 are not available on these versions of MCY board.
Non-Epson keyboards cannot be used.
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