MicroVAX 3300/3400

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MicroVAX 3300/3400
Summary
Announcement date: November 1988
Codename: Mayfair II
OS support (VMS): V5.0-2A
OS support (ELN): V3.2
OS support (ULTRIX): V3.0
CPU Details
CPU name (VMS): KA640
CPU name (console): KA640-A [1]
CPU module: KA640
Module: M7624
Number of processors: 1
VMS DCL CPU: 10
VMS DCL XCPU: 1
SID: 0A000004
XSID: 01530201
CPU cycle time: 100ns
CPU clock: 20MHz
Instruction-buffer: 12 bytes
Translation-buffer: 28 entries
Cache: 1KB
Compatibility mode: No
Console processor: CPU
Console device: None
Memory
Minimum memory: 4MB
Maximum memory: 32MB
On-board memory: 4MB
I/O
Max I/O throughput: 3.3MB/s
Q-bus: 1 @ 3.3MB/s
BUS-DSSI: 1 @ 4.0MB/s (embedded)
LAN support: 1 (embedded)
Performance
VUPs: 2.4
SPECmarks: 2.7

The MicroVAX 3300/3400 systems are minicomputer VAX systems. Both use the KA640 CPU, which i) uses the KA650 Main Memory System; ii) has a built-in DSSI bus for mass storage and Ethernet interface; and iii) provides a QBUS for general I/O functionality.

They apparently differed in using a BA215 enclosure, with a 6-slot QBUS backplane, for the former, and a BA213 enclosure, with a 12-slot backplane, for the latter.

Both could run either VMS or ULTRIX-32.

References

[1] VAX Systems Performance Summary Featuring VAX 6000 Model 500. EC-N0377-46
[3] CPU Upgrade Guide. Spring-Summer 1992

See also

External links