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.

(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.)

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)

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