5 May
1999
5 May
'99
2:30 a.m.
I've heard its possible to "upgrade" a
uVAX II to a uVAX III by
replacing the KA-630 with the KA-650 CPU.
I have a MicroVAX 3 in a BA123 (upgraded by DEC from a MicroVAX
II). The 'official' upgrade board had the same connectors as
the KA-630 making upgrade easy. The 'official' upgrade comprised
the upgrade CPU, a 16Mb MS-650 and a "MicroVAX 3" badge to
replace the "Microvax II" one. The CPU was different to that
supplied for MicroVAX 3xxx in a BA213 in that there was no
memory or ethernet on the MicroVAX 3 upgrade CPU board.
You had to send the KA-630 and MS-630 back to take advantage of a
'special offer'. My MicroVAX 3 currently has 32Mb memory (16+8+8),
although at one stage I had 48Mb in it (16+16+16), a TK50,
and 4 RD54 drives.
I have the whole documented history of this computer, including
the original purcahse agreement (when it was a 5Mb MicroVAX
II with one RD53 in April 1986 when the hardware alone
cost over 26,000 UKP)
Doug.