Difference between revisions of "VAX 8650"

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== VAX 8650 systems ==
 
 
 
{{InfoboxVAX-Data
 
{{InfoboxVAX-Data
 
| name = VAX 8650
 
| name = VAX 8650
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| CPU-technology = ECL Gate Array
 
| CPU-technology = ECL Gate Array
 
| CPU-cycle = 55ns
 
| CPU-cycle = 55ns
| CPU-clock = 72MHz
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| CPU-clock = 18.18MHz
 
| Instruction-buffer = 8 bytes [[#ref_1|[1]]]
 
| Instruction-buffer = 8 bytes [[#ref_1|[1]]]
 
| Translation-buffer = 512 entries [[#ref_1|[1]]]
 
| Translation-buffer = 512 entries [[#ref_1|[1]]]
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| VUPs = 6
 
| VUPs = 6
 
}}
 
}}
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The '''VAX 8650''' was an improved version of [[Digital Equipment Corporation|DEC]]'s second-generation [[VAX]], the [[VAX 8600]]. An 8600 could be field-upgraded to an 8650.
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==From Wikipedia==
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: ''The VAX 8650, code-named "Morningstar", was a faster version of the VAX 8600 introduced on 4 December 1985. It was originally to be named "VAX-11/795", but was renamed before launch. The VAX 8600 was the last VAX to be 100% compatible with the [[VAX-11/780]] and [[VAX-11/785]], to have the [[PDP-11]] compatibility mode, and to use the [[Synchronous Backplane Interconnect|SBI]] also used by the VAX-11/78x. The CPU had a 55 ns cycle time (18.18 MHz).''
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{{Wikipedia|VAX_8000#VAX_8650}}
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{{semi-stub}}
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==References==
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* <div id="ref_1">[1] VAX Hardware Handbook. Volume 2-1986. </div>
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==External links==
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* [http://www.bitsavers.org/pdf/dec/vax/8600/ 8600] - documentation at [[Bitsavers]]
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** [http://www.bitsavers.org/pdf/dec/vax/8600/EK-8600I-S1-001_VAX_8600_System_Upgrade_Procedure_May86.pdf VAX 8600 System Upgrade Procedure] (EK-8600I-S1-001)
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* [http://www.bitsavers.org/pdf/dec/vax/handbook/VAX_Hardware_Handbook_Volume_2_1986.pdf VAX Hardware Handbook Volume 2] - the VAX 8650 is described on page 1-9 (pg. 18 of the PDF) and covered in detail in Chapter 3 (pp. 50-76)
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* [https://manx-docs.org/collections/antonio/dec/db86xtd2.pdf VAX 8600/8650 SBIA Technical Description] (EK-DB86X-TD-002)
  
== References ==
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{{Nav VAX}}
  
<div id="ref_1">[1] VAX Hardware Handbook. Volume 2-1986. </div>
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[[Category: VAX Superminis]]
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[[Category: VAX 86xx Systems]]

Latest revision as of 21:16, 19 May 2024


VAX 8650
Summary
Announcement date: 4 December 1985
Codename: Morningstar
OS support (VMS): V4.3
CPU Details
CPU module: KA865
Number of processors: 1
CPU technology: ECL Gate Array
CPU cycle time: 55ns
CPU clock: 18.18MHz
Instruction-buffer: 8 bytes [1]
Translation-buffer: 512 entries [1]
Writable Control Store: 8K 86-bit words [1]
Cache: 16KB [1]
Compatibility mode: Yes
Console processor: T-11 [1]
Console device: RL02 [1]
Memory
Minimum memory: 16MB [1]
Maximum memory: 368MB
Memory checking: 7-bit ECC/longword [1]
I/O
Max I/O throughput: 26MB/s
SBI: 1-2 [1]
MASSBUS: 4 @ 2.0MB/s [1]
UNIBUS: 7 @ 1.5MB/s
LAN support: optional
Performance
VUPs: 6

The VAX 8650 was an improved version of DEC's second-generation VAX, the VAX 8600. An 8600 could be field-upgraded to an 8650.

From Wikipedia

The VAX 8650, code-named "Morningstar", was a faster version of the VAX 8600 introduced on 4 December 1985. It was originally to be named "VAX-11/795", but was renamed before launch. The VAX 8600 was the last VAX to be 100% compatible with the VAX-11/780 and VAX-11/785, to have the PDP-11 compatibility mode, and to use the SBI also used by the VAX-11/78x. The CPU had a 55 ns cycle time (18.18 MHz).

This page contains content from Wikipedia, article VAX_8000#VAX_8650, under the Creative Commons license.

References

  • [1] VAX Hardware Handbook. Volume 2-1986.

External links