VAX 8550

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.