MicroVAX 2000

From Computer History Wiki
Jump to: navigation, search

MicroVAX 2000
Codename: Teammate
OS support (VMS): V4.5B
CPU Details
CPU name (VMS): KA410
CPU name (console): KA410-A
CPU module: KA410
Number of processors: 1
SID: 08000000
XSID: 04040001
CPU chip: DC333
FPU chip: DC337 [2]
CPU technology: ZMOS
CPU cycle time: 200ns [2]
CPU clock: 40MHz [2]
Instruction-buffer: 8 bytes [3]
Cache: None
Minimum memory: 2MB [2]
Maximum memory: 16MB [2]
Physical address lines: 30 [2]
Memory checking: Byte parity [2]
On-board memory: 2MB [2]
Max I/O throughput: 3.3MB/s
LAN support: Optional: DESVA ThinWire Ethernet Option
VUPs: 0.9

The MicroVAX 2000 is a late minicomputer VAX in a desktop mounting box, using a microprocessor mounted on a motherboard. The VAXstation 2000 is a MicroVAX 2000 with an added bit-mapped display.

MicroVAX 2000 Connectors

MicroVAX 2000 with DEC423 converter attached

The MicroVAX 2000 system has a DEC423 converter attached to the back of the system box and is mounted over the video and printer ports. The DEC423 converter changes the RS232 signals on the 15-pin video port and 9-pin printer port into DEC423 signals which go out to the three MMJ connectors. [8]

MicroVAX 2000 Parts & Options

Power Supply

Memory Options

Only one MS400 memory module may be connected to a KA410-A system module, which has 2MB on-board memory.

Mass Storage Options

  • RX33 5.25" Floppy Drive
  • RD32 42MB Disk Drive
  • RD53 71MB Disk Drive
  • RD54 159MB Disk Drive
  • TK50 96MB Cartridge Tape Drive

Communication Options

Expansion Boxes

You need the BA40A expansion adapter to connect any of the expansion boxes, but only one adapter is needed for two boxes.

The expansion box houses either a tape drive or a fixed disk drive and is shipped with a drive cable. The drive cable connects the expansion box to the MicroVAX 2000 / VAXstation 2000 system unit's expansion adapter. The expansion adapter must already be installed on the bottom of the MicroVAX 2000 / VAXstation 2000 system unit before the expansion box is connected.

You may install a total of two expansion boxes (one with a fixed disk and one with a tape drive). If you are installing more than one expansion box, first install the expansion box with the tape drive, and then install the expansion box with the fixed disk.


[1] VAXstation 2000 System Guide. EK-V2000-SG-001
[2] VAXstation 2000 and MicroVAX 2000 Technical Manual. EK-VTTAA-TM.001
[3] MicroVAX Systems Handbook 1988. EB-30991-41
[4] Systems & Options Catalog. European Edition. Spring 1990.
[5] MicroVAX 2000 Installation Guide Addendum - DHT32 Asynchronous Serial Line Option. EK-ASYSL-IN-001
[6] Preliminary DSH32 Synchronous-Asynchronous Serial Line Option. EK-283AA-AD-001
[7] MicroVAX 2000 Installation Guide Addendum - DST32 Synchronous Serial Line Option. EK-SYNCH-IN-001
[8] MicroVAX 2000 Owners Manual. EK-MVXAA-OM-001

See also

External links