Motorola Series 900
The Series 900 were very nice, stylish looking, stackable m88k-based computer systems.
They were available in a lot of different configurations based on different MVME boards, including:
It is very well possible to use a different MVME board as the CPU, e.g. a MVME197SP.
The basic configuration consisted of two modules:
- The lower module housed the power supply and the actual VME-cage with four 6U-slots.
Installed VME cards consisted of the CPU-board (see above), an I/O-board (not a P2-board!)
and in most cases also a multi-port serial board.
The I/O-board contains the following I/O-ports (from left to right):
- HD68 SCSI, although this is
a wide-SCSI-connector, only
narrow-SCSI is perfomed
with the existing MVME88k boards (they only have narrow-capable
- CONTROL, RJ45-port, connects to the SCSI-enclosure.
- SP4/UPS, serial RJ45-port, to connect to an UPS.
- SP3, serial RJ45-port.
- SP2/TEL, serial RJ45-port, to connect to a modem.
- CONSOLE, serial RJ45-port, to connect a serial console (pinout see Reference 1 below).
- 10 BASE T, RJ45-port for an Ethernet connection.
- ETHERNET, AUI-port for an Ethernet connection.
- The upper module housed the bays for two 5.25" SE-
SCSI removable media drives and two
3.5" SCSI harddrives in special trays.
More VME and drive-modules can be stacked onto the system to provide more VME-slots and more room for drives.
- Pinout for the RJ45 serial port to connect to a "standard" DB25
serial connector. Taken from an USENET post from Martin Etteldorf.
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