Eisa Installations; Intermixing Megaplex & Megaport - Equinox Systems MEGAPORT Hardware Reference Manual

EISA Installations

When installing a MEGAPORT board in an EISA system, a jumper
must be installed to permit the configuration scheme to work prop-
erly. This jumper causes the MEGAPORT board to occupy I/O ad-
dresses 0x340 and 0x341. These addresses should not be used by
another device.
Install the jumper across the left top-most two pins denoted by "PA0"
on the printed circuit board (see Figure 2-2). This figure shows only
PA0 installed to select addresses 0x340 and 0x341. Install the jumper
in the same location on all MEGAPORT boards.
Figure 2-2. Installing the EISA configuration jumper
Intermixing MEGAPLEX & MEGAPORT
MEGAPORT boards may be intermixed with other Equinox products
including the MEGAPORT 8CS and MEGAPLEX. MEGAPORT/2
boards may be intermixed with MEGAPLEX/2. MEGAPORT/RS
boards may be intermixed with MEGAPLEX/RS.
The MEGAPORT 8CS is in all respects equivalent to a 24CS board
except it has RJ-11 modular jacks on the mounting bracket. It
installs in a system the same as a MEGAPORT board except for
device wiring. Refer to the MEGAPORT 8CS Hardware Reference
Manual (part number 560044) for more information.
The MEGAPLEX serial I/O subsystem is functionally equivalent to
multiple MEGAPORT boards and may also be intermixed in a com-
puter. There are some minor considerations in the physical installa-
tion. Refer to the MEGAPLEX Hardware Reference Manual (part
number 560050) for more information.
10 Equinox MEGAPORT Hardware Reference Manual