MicroVAX 3500/3600

MicroVAX 3500/3600
A MicroVAX 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]

The MicroVAX 3500 and MicroVAX 3600 are variants of the VAXserver 3500/3600. The MicroVAX 3500 and 3600 are very similar. The difference between the 3500 and 3600 is the placement of the systems: the 3500 uses the BA213 enclosure, whereas the 3600 uses the bare BA213 chassis housed in the H9644 cabinet with a similar, but modified door. Both models have the same a 12-slot backplane.

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 only for I/O.

Documentation error

The MicroVAX 3600 VAXserver 3600/3602 Technical Information manual says that both the 3500 and 3600 used the BA213 enclosure. (The MicroVAX 3600 VAXserver 3600/3602 Operation manual says that the 3600 is in the H9644 cabinet.)

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

• MicroVAX 3500 documentation
  • MicroVAX 3500 VAXserver 3500 Operation (EK-O28AB-OM-002)
• MicroVAX 3500 VAXserver 3500 Technical Information (EK-O30AB-IS-002)
• MicroVAX 3600 VAXserver 3600/3602 Operation (EK-O33AB-OM-002)
• MicroVAX 3600 VAXserver 3600/3602 Technical Information (EK-O35AB-IS-002)
• MicroVAX 3500