VAX-11/785: Difference between revisions

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== VAX-11/785 systems ==
{{InfoboxVAX-Data
{{InfoboxVAX-Data
| name = VAX-11/785
| name = VAX-11/785
Line 8: Line 5:
| OS-support-VMS = VMS V3.4
| OS-support-VMS = VMS V3.4
| OS-support-ULTRIX = Ultrix V1.0
| OS-support-ULTRIX = Ultrix V1.0
| CPU-name-VMS = KA785
| CPU-name-VMS = [[KA785 CPU|KA785]]
| Num-proc = 1
| Num-proc = 1
| CPU-technology = Advanced Schottky
| CPU-technology = Advanced Schottky
Line 28: Line 25:
| BUS-UNIBUS = 4 @ 1.5MB/s
| BUS-UNIBUS = 4 @ 1.5MB/s
| LAN-support = optional
| LAN-support = optional
| VUPs = 1.7
| VUPs = 1.5 - 1.7 [[#ref_3|[3]]]
}}
}}
The '''VAX-11/785''' was an upgraded version of the [[VAX-11/780|/780]]; its [[Central Processing Unit|CPU]] used [[Advanced Schottky]] [[logic]]. A /780 could be upgraded to a /785 by replacing the CPU's [[printed circuit board|cards]].
{{semi-stub}}
==See also==
* [[VAX-11/785 Revision Control]]
==References==
<div id="ref_1">[1] VAX Hardware Handbook Volume 1 - 1986. </div>
<div id="ref_2">[2] CPU Upgrade Guide. Spring-Summer 1992. </div>
<div id="ref_3">[3] VAXcluster Systems Guidelines for VAXcluster System Configurations". EK–VAXCT–CG–006</div>
==External links==
* [http://www.bitsavers.org/pdf/dec/vax/785/ 785] - documentation on [[BitSavers]]
** [http://www.bitsavers.org/pdf/dec/vax/785/EK-11785-UG-PRE_VAX-11_785_Hardware_Users_Guide_1984.pdf VAX-11/785 Hardware User's Guide] (EK-11785-UG-PRE)


== References ==
{{Nav VAX}}


<div id="ref_1">[1] VAX Hardware Handbook Volume 1 - 1986. </div>
[[Category: VAX Superminis]]
<div id="ref_2">[2] CPU Upgrade Guide. Spring-Summer 1992. </div>
[[Category: VAX-11/7xx Systems]]

Latest revision as of 18:58, 19 May 2024


VAX-11/785
Summary
Announcement date: 2 April 1984
Codename: Superstar
OS support (VMS): VMS V3.4
OS support (ULTRIX): Ultrix V1.0
CPU Details
CPU name (VMS): KA785
Number of processors: 1
CPU technology: Advanced Schottky
CPU cycle time: 133ns [1]
Instruction-buffer: 8 bytes [1]
Translation-buffer: 128 entries [1]
Control store: 0.5KB 99-bit words [1]
Writable Control Store: 6.5K 99-bit words [1]
User Writable Control Store: 1K 99-bit words [1]
Cache: 32KB [1]
Compatibility mode: Yes [1]
Console processor: LSI-11 [1]
Console device: RX01 [1]
Memory
Minimum memory: 2MB
Maximum memory: 64MB [1]
Memory checking: 8-bit ECC/quadword [1]
I/O
Max I/O throughput: 13.3MB/s [1]
MASSBUS: 4 @ 2.0MB/s
UNIBUS: 4 @ 1.5MB/s
LAN support: optional
Performance
VUPs: 1.5 - 1.7 [3]

The VAX-11/785 was an upgraded version of the /780; its CPU used Advanced Schottky logic. A /780 could be upgraded to a /785 by replacing the CPU's cards.

See also

References

[1] VAX Hardware Handbook Volume 1 - 1986.
[2] CPU Upgrade Guide. Spring-Summer 1992.
[3] VAXcluster Systems Guidelines for VAXcluster System Configurations". EK–VAXCT–CG–006

External links