Epson Equity 286 PLUS Guia do Utilizador descarregar pdf (Página 20)

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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Epson Equity 286 PLUS Guia do Utilizador Página 20