VAX 8800

VAX 8800
Summary
Announcement date:	29 January 1986
FRS date:	February 1986
Codename:	Nautilus
OS support (VMS):	VMS V4.4
CPU Details
CPU module:	KA88
Number of processors:	2
VMS DCL CPU:	6
VMS DCL XCPU:	0
SID:	06045060
XSID:	000009F7
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 [1]
Cache:	64KB
Console processor:	PRO380
Memory
Minimum memory:	48MB
Maximum memory:	12000003
Memory checking:	7-bit ECC/longword
I/O
Max I/O throughput:	Over 30MB/s [1]
UNIBUS:	2 @ 1.5MB/s
VAXBI:	4 @ 13.3MB/s
LAN support:	optional
Performance
VUPs:	12

The VAX 8800 is a dual-CPU version of the VAX 8700.

It belongs to the first generation of VAX 8800 computers, which includes four more models:

• VAX 8500
• VAX 8530
• VAX 8550
• VAX 8700

When the second generation of VAX 88xx computers came out in 1987, the VAX 8800 was renamed to VAX 8820N (N for Nautilus)

The designation VAX 8800 is occasionally used for the whole first generation of VAX 8800 computers (correctly called VAX 8800 Family) as well, leading to confusion sometimes.

References

[1] "VAX 8800 Family", Digital Technical Journal, Vol 1 No 4, February 1987.

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

External links

• VAX Hardware Handbook Volume 2 - the VAX 8800 is covered in Chapter 2 (pp. 24-49 of the PDF)
• 8800 - VAX 88xx documentation at Bitsavers