VAX 8550

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VAX 8550
Summary
Announcement date: August 1986
FRS date: 24 January 1989
Codename: Skipjack
OS support (VMS): VMS V4.4
CPU Details
Number of processors: 1
CPU technology: ECL Gate Array [1]
CPU cycle time: 45ns [1]
Instruction-buffer: 16 bytes [1]
Translation-buffer: 1024 entries [1]
Writable Control Store: 15K 143-bit words [1]
User Writable Control Store: 1K 143-bit words
Cache: 64KB [1]
Compatibility mode: No
Console processor: PRO 380
Console device: None
Memory
Minimum memory: 16MB
Maximum memory: 320MB
Memory checking: 7-bit ECC/longword [2]
I/O
Max I/O throughput: 16MB/s [1]
UNIBUS: 1 @ 1.5MB/s
VAXBI: 1-2 @ 13.3MB/s [2]
LAN support: standard [2]
Performance
VUPs: 6.0

The VAX 8550 is a mid-range member of the VAX 85xx/87xx/88xx family.

References

[1] "VAX 8800 Family", Digital Technical Journal, Vol 1 No 4, February 1987.
[2] VAX Hardware Handbook. Volume 2-1986.
[3] VAX Systems Hardware Handbook -- VAXBI Systems. EB-31692-46
[4] Systems & Options Catalog. European Edition. Spring 1990.