Intermixing Megaplex & Megaport Boards; Ps/2-Type Hardware Configuration - Equinox Systems MEGAPLEX Hardware Reference Manual

Intermixing MEGAPLEX & MEGAPORT Boards
MEGAPLEX subsystems may be freely intermixed with other
Equinox MEGAPORT products.
If a MEGAPLEX subsystem(s) is combined with any MEGAPORT
board(s) in a system, the MEGAPLEX subsystem(s) must be the first
board, physically, in the system. The interconnect cable supplied with
either board is connected in the same manner as when adding
another board (see Figure 2-4) in the system. To install the board(s),
perform the procedure outlined under the paragraph heading
Installing Additional MEGAPLEX Boards.
If a MEGAPLEX/2 subsystem(s) is combined with any MEGAPORT/2
board(s) in a system, any board may be placed in any slot in the
system; there is no interconnect cable. The same applies for
MEGAPLEX/RS and MEGAPORT/RS.

PS/2-Type Hardware Configuration

MEGAPORT/2 only
The following paragraphs apply to the IBM PS/2, the NCR 3000
Series and other similar Micro Channel Architecture computers. The
process described is essentially the same for each, although some
terminology may vary.
After installing the MEGAPLEX/2 host controller board, the computer
must be configured. The first time the machine is turned on with the
MEGAPLEX/2 installed, an error code of 165 appears and 2 beeps are
sounded after the RAM is counted. This error message indicates that
the configuration has been changed and the machine must be
reconfigured to recognize the MEGAPLEX/2.
Micro Channel machines require an Adapter Description File (ADF)
to automatically configure each peripheral device (adapter) installed.
The system identifies the adaptor by requesting a Programmable
Option Select (POS) ID from adapters installed in the computer. The
POS ID for the MEGAPLEX/2 is 6386. The corresponding ADF
(@6386.ADF) for the MEGAPLEX/2 containing the configuration
information for the board is provided on the MEGAPORT/2 Option
Diskette. This file must be copied to a backup of the Reference Dis-
kette supplied with the computer. The steps for doing so are pre-
sented below.
12 MEGAPLEX Hardware Reference Manual