Difference between revisions of "MicroVAX 3800/3900"
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<div id="ref_1">[1] KA655 CPU Module Technical Manual. EK-KA655-TM-001</div> | <div id="ref_1">[1] KA655 CPU Module Technical Manual. EK-KA655-TM-001</div> | ||
| − | <div id="ref_2">[2] VAXcluster Systems | + | <div id="ref_2">[2] [http://www.vaxhaven.com/images/c/c6/EK-VAXCT-CG-006.pdf 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> | <div id="ref_3">[3] VAX Systems Performance Summary Featuring VAX 6000 Model 500. EC-N0377-46</div> | ||
Revision as of 07:13, 12 September 2023
| 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 |
The MicroVAX 3800 and MicroVAX 3900 are very similar, the only distinction being the enclosure and accompanying disk drives: the 3800 was available in the BA213, and the 3900 in the H9644 cabinet. The MicroVAX 3900 includes an RA90. They both used the KA655 CPU.
There were special versions for usage in Local Area VAXclusters, namend VAXserver 3800 and VAXserver 3900. The difference between these and the MicroVAXen is in the system ROM on the CPU board, which prevents multi-user access to this computers.
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, and NetBSD, and OpenVMS 7.3 under Debian on a Tinkerboard.
References
External Links
- 3800 - documentation at Bitsavers
- MicroVAX 3800 VAXserver 3800 Installation (EK-164AA-IN-001)
- MicroVAX 3800 VAXserver 3800 Operation (EK-16SAA-OM-001)
- MicroVAX 3900 VAXserver 3900 Operation (EK-168AA-OM-001)
| v • d • e VAX Computers and Operating Systems |
|---|
| VAX-11/7xx (including VAX 86x0) - VAX-11/780 • VAX-11/785 • VAX-11/750 • VAX-11/730 • VAX 8600 • VAX 8650
VAX 8000 series (excluding VAX 86x0, above) - VAX 82xx/83xx series • VAX 85xx/87xx/88xx series MicroVAXen (many types also come in VAXserver and VAXstation models) - MicroVAX I • MicroVAX II VAXstation Series - VAXstation I • VAXstation II Late Model VAXen - VAX 4000 series • VAX 6000 series • VAX 7000 series • VAX 9000 series • VAX 10000 series |
| Special Purpose VAXen - VAXft series • rtVAX series • Infoserver series
Clones - CM 1700 • TPA-11/580 |
