MicroVAX 3300/3400

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 both use the KA640 CPU; 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 provided a DSSI bus for mass storage.

References

[1] VAX Systems Performance Summary Featuring VAX 6000 Model 500. EC-N0377-46

[2] VAXcluster Systems - Guidelines for VAXcluster System Configurations (EK-VAXCT-CG-006)

[3] CPU Upgrade Guide. Spring-Summer 1992

External links

• 3400 - documentation at Bitsavers
  • MicroVAX 3400 VAXserver 3400 Operation (EK-161AA-OM-001)
  • MicroVAX 3400 VAXserver 3400 Technical Information (EK-163AA-IS-001)
• MicroVAX 3300
• MicroVAX 3300