Difference between revisions of "KA650 CPU"
From Computer History Wiki
(KA650 Revision Control added) |
m (Give links for manuals) |
||
| Line 50: | Line 50: | ||
==Memory Subsystem== | ==Memory Subsystem== | ||
| − | The KA650 memory subsystem is detailed elsewhere: [[KA650 Memory | + | The KA650 memory subsystem is detailed elsewhere: [[KA650 Main Memory System]]. |
| + | |||
| + | {{semi-stub}} | ||
== References == | == References == | ||
<div id="ref_1">[1] "CVAX-based Systems", Digital Technical Journal, Vol 1 No 7, August 1988. </div> | <div id="ref_1">[1] "CVAX-based Systems", Digital Technical Journal, Vol 1 No 7, August 1988. </div> | ||
| − | |||
| − | |||
| − | |||
| − | + | ==External links== | |
| + | |||
| + | * <div id="ref_2">[https://manx-docs.org/collections/antonio/dec/MDS-2000-01/cd1/CLUSTER/VAXCTCG6.PDF VAXcluster Systems: Guidelines for VAXCcuster System Configurations] (EK-VAXCT-CG-006)</div> | ||
| + | * <div id="ref_4">[http://www.bitsavers.org/pdf/dec/vax/650/EK-KA650-UG-002_KA650-AA_CPU_Module_Technical_Manual_Aug88.pdf KA650-AA CPU Module Technical Manual] (EK-KA650-UG-002)</div> | ||
| + | * <div id="ref_3">[http://www.bitsavers.org/pdf/dec/vax/650/MP02538_650QS_sch_Oct89.pdf 650QS Pedestal, BA213 Field Maintenance Print Set] (MP-02538-01)</div> | ||
[[Category: VAX QBUS Processors]] | [[Category: VAX QBUS Processors]] | ||
Revision as of 23:20, 17 June 2022
| KA650 | |
| Summary | |
|---|---|
| OS support (VMS): | V4.7A or later |
| OS support (ULTRIX): | ULTRIX V2.2 |
| CPU Details | |
| CPU name (VMS): | KA650 |
| CPU module: | KA650 |
| Module: | M7620 [3] |
| Number of processors: | 1 |
| VMS DCL CPU: | 10 |
| VMS DCL XCPU: | 1 |
| SID: | 0A000005 |
| XSID: | 01530101 |
| CPU chip: | 78034 (CVAX) [1] |
| FPU chip: | 78132 |
| CPU technology: | CMOS |
| CPU cycle time: | 90ns [4] |
| Instruction-buffer: | 12 bytes [1] |
| Translation-buffer: | 28 entries [1] |
| Cache: | 1KB (90ns) [1] |
| Backup cache: | 64KB (180ns longword, 270ns quadword) [4] |
| Compatibility mode: | No |
| Console processor: | CPU |
| Console device: | None |
| Firmware version: | V5.3 |
| Console speed: | 300 to 38400 |
| Memory | |
| Minimum memory: | 8MB |
| Maximum memory: | 64MB |
| Memory checking: | 32 + 7 bit ECC [4] |
| Memory cycle: | 450ns longword, 720ns quadword [4] |
| I/O | |
| Q-bus: | 1 @ 3.3MB/s |
| Performance | |
| VUPs: | 2.7 [2] |
The KA650 is the CPU used in DEC's MicroVAX III. It is a single quad-height PCB which plugs into a QBUS backplane. [4]
The KA650 is implemented using the CVAX with floating point instruction support provided by the CFPA, main memory control provided by CMCTL, and various system support functions by the SSC.
There are two versions of the KA650:
- KA650-A (M7620-A): Time-Sharing CPU
- KA650-B (M7620-B): Workstation / Server CPU
The only differences between the two CPUs are the system ROMs:
- KA650-A: 23-192E7 and 23-193E7
- KA650-B: 23-194E7 and 23-195E7
You need different VMS software licenses for the two KA650 versions.
For information on KA650 revisions and compatible options see: KA650 Revision Control.
Memory Subsystem
The KA650 memory subsystem is detailed elsewhere: KA650 Main Memory System.
References
[1] "CVAX-based Systems", Digital Technical Journal, Vol 1 No 7, August 1988.
External links
- VAXcluster Systems: Guidelines for VAXCcuster System Configurations (EK-VAXCT-CG-006)
- KA650-AA CPU Module Technical Manual (EK-KA650-UG-002)
- 650QS Pedestal, BA213 Field Maintenance Print Set (MP-02538-01)
