MicroVAX 3800/3900: Difference between revisions

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{{Infobox VAX
 
== MicroVAX 3800/3900 systems ==
 
{{InfoboxVAX-Data
| name = MicroVAX 3800/3900
| name = MicroVAX 3800/3900
| codename = Mayfair III
| Announcement = 10 April 1989
| vups = 3.8
| Codename = Mayfair III
| ram = 64 MB max
| OS-support-VMS = V5.1
| year introduced = 1989???
| CPU-name-VMS = KA655
| clock speed = 60 ns
| CPU-name-console = KA655
| CPU-module = KA655
| Module = M7625
| Num-proc = 1
| VMS-CPU = 10
| VMS-XCPU = 1
| SID = 0A000005
| XSID = 01530301
| CPU-chip = CVAX
| FPU-chip = CFPA [[#ref_1|[1]]]
| CPU-technology = CMOS
| CPU-cycle = 60ns [[#ref_1|[1]]]
| CPU-clock = 33MHz [[#ref_1|[1]]]
| Instruction-buffer = 12 bytes [[#ref_1|[1]]]
| Translation-buffer = 28 entries [[#ref_1|[1]]]
| Cache = 1KB [[#ref_1|[1]]]
| Backup-cache = 64KB (120ns) [[#ref_1|[1]]]
| Compatibility-mode = No
| Console-processor = CPU
| Console-device = None
| Firmware-version = V5.3
| Minimum-memory = 16MB
| Maximum-memory = 64MB
| Memory-checking = 7-bit ECC/longword [[#ref_1|[1]]]
| BUS-Qbus = 1 @ 3.3MB/s
| LAN-support = optional
| VUPs = 3.8 [[#ref_2|[2]]]
| SPECmarks = 4.0
}}
}}


These machines are very similar, the only distinction being the enclosure and accompanying drives.  The MicroVAX 3900 includes an [[RA90]]. 
== References ==
 
The MicroVAX 3900 is the original model of VAX emulated by [[SIMH]]. (It now also emulates a [[VAX 780]].)  It can run [[4.3 BSD]], VMS 5.1-1 to 7.3, [[NetBSD]].


{{Nav VAX}}
<div id="ref_1">[1] KA655 CPU Module Technical Manual. EK-KA655-TM-001</div>
<div id="ref_2">[2] VAXcluster Systems. Guidelines for VAXCluster System Configurations. EK-VAXCT-CG-006</div>
<div id="ref_3">[3] VAX Systems Performance Summary Featuring VAX 6000 Model 500. EC-N0377-46</div>

Revision as of 21:43, 6 July 2017

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
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