MicroVAX 3800/3900

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MicroVAX 3800/3900 systems

MicroVAX 3800/3900
Summary
Announcement date: 10 April 1989
Codename: Mayfair III
OS support (VMS): V5.1
CPU Details
CPU name (VMS): KA655
CPU name (console): KA655
CPU module: KA655
Module: M7625
Number of processors: 1
VMS DCL CPU: 10
VMS DCL XCPU: 1
SID: 0A000005
XSID: 01530301
CPU chip: CVAX
FPU chip: CFPA [1]
CPU technology: CMOS
CPU cycle time: 60ns [1]
CPU clock: 33MHz [1]
Instruction-buffer: 12 bytes [1]
Translation-buffer: 28 entries [1]
Cache: 1KB [1]
Backup cache: 64KB (120ns) [1]
Compatibility mode: No
Console processor: CPU
Console device: None
Firmware version: V5.3
Memory
Minimum memory: 16MB
Maximum memory: 64MB
Memory checking: 7-bit ECC/longword [1]
I/O
Q-bus: 1 @ 3.3MB/s
LAN support: optional
Performance
VUPs: 3.8 [2]
SPECmarks: 4.0


References

[1] KA655 CPU Module Technical Manual. EK-KA655-TM-001
[2] VAXcluster Systems. Guidelines for VAXCluster System Configurations. EK-VAXCT-CG-006
[3] VAX Systems Performance Summary Featuring VAX 6000 Model 500. EC-N0377-46