FPGA VAX update

[Allison]

>
>Subject: Re: FPGA VAX update
>   From: William Donzelli <aw288 at osfn.org>
>   Date: Sun, 23 Oct 2005 17:09:48 -0400 (EDT)
>     To: "General Discussion: On-Topic and Off-Topic Posts" <cctalk at classiccmp.org>
>
>> I think fab a real chip would be a better idea -- but then how many 
>> people want a vax?
>> Ok, I don't . Looking at a different post the vax has large microcode, 
>> so a FPGA that
>> can have internal ram be configured as micro-code tables would be handy. 
>
>Did all VAX machines have microcode?
>
>William Donzelli
>aw288 at osfn.org

Far as I know, yes.  For the 7xx series absolutely.  There was limited rom
microcode to enable booting and diags but the bulk of it was loaded at boot.
Soft loaded microcode (ignoring emulated instructions) mostly disappeared
with the Microvax and later VAX on silicon.


Allison