KA650 CPU
From Computer History Wiki
| 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 CPU module is a quad-height QBUS VAX CPU produced by DEC. [4]
The KA650 is implemented using the CVAX with floating point instruction support provided by the CFPA and main memory control provided by CMCTL.
References
[1] "CVAX-based Systems", Digital Technical Journal, Vol 1 No 7, August 1988.
[2] VAXcluster Systems. Guidelines for VAXCluster System Configurations. EK-VAXCT-CG-006
[3] Field Maintenance Print Set: 650QS Pedestal, BA213. MP-02538-01
[4] KA650 CPU Module Technical Manual. EK-KA650-UG.003
