Difference between revisions of "MicroVAX 3500/3600"

From Computer History Wiki
Jump to: navigation, search
(Add brief overview, link manuals)
m (No MicroVAX III)
Line 37: Line 37:
 
The '''MicroVAX 3500''' and '''MicroVAX 3600''' are very similar; the only distinction appears to be the enclosure: the 3500 was available in the [[BA213]], and the 3600 in the [[H9644 cabinet]].
 
The '''MicroVAX 3500''' and '''MicroVAX 3600''' are very similar; the only distinction appears to be the enclosure: the 3500 was available in the [[BA213]], and the 3600 in the [[H9644 cabinet]].
  
They used the [[KA650 CPU]] of the [[MicroVAX III]]. [[Main memory]] was the [[KA650 Main Memory System]], using a special bus carried on [[over the back]] connectors as well as the [[CD interconnect]] of the [[QBUS]] [[backplane]]. The QBUS was used for [[input/output|I/O]].  
+
They used the [[KA650 CPU]]; [[main memory]] used the [[KA650 Main Memory System]], using a special bus carried on [[over the back]] connectors as well as the [[CD interconnect]] of the [[QBUS]] [[backplane]]. The QBUS was used for [[input/output|I/O]].  
  
 
{{semi-stub}}
 
{{semi-stub}}

Revision as of 17:45, 31 March 2023


MicroVAX 3500/3600
Summary
Announcement date: 9 September 1987
Codename: Mayfair
OS support (VMS): V4.7A or later
OS support (ULTRIX): ULTRIX V2.2
CPU Details
CPU name (VMS): KA650
CPU name (console): KA650-A
CPU module: KA650
Module: M7620
Number of processors: 1
VMS DCL CPU: 10
VMS DCL XCPU: 1
SID: 0A000005
XSID: 01530101
CPU chip: 78034 (CVAX) [2]
FPU chip: 78132
CPU technology: CMOS
CPU cycle time: 90ns [2]
Instruction-buffer: 12 bytes [2]
Translation-buffer: 28 entries [2]
Cache: 1KB (90ns) [2]
Backup cache: 64KB (180ns) [2]
Compatibility mode: No
Console processor: CPU
Console device: None
Firmware version: V5.3
Memory
Minimum memory: 2MB
Maximum memory: 64MB
I/O
Q-bus: 1 @ 3.3MB/s
LAN support: optional
Performance
VUPs: 2.7 [4]


A MicroVAX 3600

The MicroVAX 3500 and MicroVAX 3600 are very similar; the only distinction appears to be the enclosure: the 3500 was available in the BA213, and the 3600 in the H9644 cabinet.

They used the KA650 CPU; main memory used the KA650 Main Memory System, using a special bus carried on over the back connectors as well as the CD interconnect of the QBUS backplane. The QBUS was used for I/O.

References

[1] Special Sales Update. Sep 1987.
[2] "CVAX-based Systems", Digital Technical Journal, Vol 1 No 7, August 1988.
[3] VAX Systems Hardware Handbook -- VAXBI Systems. EB-31692-46
[4] VAXcluster Systems. Guidelines for VAXCluster System Configurations. EK-VAXCT-CG-006

External links