On Fri, 10 Jul 2020 at 19:10, Johnny Billquist wrote:
> Except of course you don't find any memory modules in the 93/94, since
> all memory are on the CPU board.
>
Oh? I know the KDJ11-EB doesn't need memory modules, since it has all
4MB that a 22-bitter can use onboard, but I do recall that it's
Thanks for the additional details, Don. You definitely know more, and
were more involved than I ever was.
A couple of additional comments...
On 2020-07-10 20:52, Don North wrote:
On 7/10/2020 7:20 AM, Johnny Billquist wrote:
On 2020-07-10 14:19, Paul Koning wrote:
On Jul 9, 2020, at
On 2020-07-10 19:16, Christian Gauger-Cosgrove wrote:
On Fri, 10 Jul 2020 at 11:56, Tom Perrine wrote:
Way back in the mid/late 80s we had a machine from ATT/Teradata which was a DB appliance.
It was a standalone rack about the size of an RA81, IIRC. It claimed to have
"single board
On 7/10/2020 7:20 AM, Johnny Billquist wrote:
On 2020-07-10 14:19, Paul Koning wrote:
On Jul 9, 2020, at 10:40 PM, Johnny Billquist wrote:
On 2020-07-10 04:37, Don North wrote:
On 7/9/2020 6:25 PM, Bob Supnik wrote:
Yes, the PDP11 Architecture Handbook was a post-facto effort. The J11 was
On Fri, 10 Jul 2020 at 11:56, Tom Perrine wrote:
>
> Way back in the mid/late 80s we had a machine from ATT/Teradata which was a
> DB appliance. It was a standalone rack about the size of an RA81, IIRC. It
> claimed to have "single board PDP-11, a PDP-11/84" as the CPU.
>
> I had never heard
The Teradata database-engine racks had large arrays of disks and high
densities of CPU's. Not sole 11/84's.
If you had a standalone short rack with a 11/84, I think that was used as
front-end communications, RJE-style, to the IBM mainframe it attached to. I
recall many vendors put a DEC bisync
The 11/84 definitely is that size at least. And the cpu is just one chip. But
it's on a board with some other stuff. Memory is separate though. With the
11/94 you had also memory on the same board.
Johnny
Tom Perrine skrev: (10 juli 2020 17:55:32 CEST)
>Way back in the mid/late 80s we had
Way back in the mid/late 80s we had a machine from ATT/Teradata which was a
DB appliance. It was a standalone rack about the size of an RA81, IIRC.
It claimed to have "single board PDP-11, a PDP-11/84" as the CPU.
I had never heard of it before or since. Was that a typo? Hype? Flat out
wrong?
On 2020-07-10 14:19, Paul Koning wrote:
On Jul 9, 2020, at 10:40 PM, Johnny Billquist wrote:
On 2020-07-10 04:37, Don North wrote:
On 7/9/2020 6:25 PM, Bob Supnik wrote:
Yes, the PDP11 Architecture Handbook was a post-facto effort. The J11 was
finished; DEC did not intend to do another
> On Jul 9, 2020, at 10:40 PM, Johnny Billquist wrote:
>
> On 2020-07-10 04:37, Don North wrote:
>> On 7/9/2020 6:25 PM, Bob Supnik wrote:
>>> Yes, the PDP11 Architecture Handbook was a post-facto effort. The J11 was
>>> finished; DEC did not intend to do another PDP11 processor. (I wrote a
On 2020-07-10 04:37, Don North wrote:
On 7/9/2020 6:25 PM, Bob Supnik wrote:
Yes, the PDP11 Architecture Handbook was a post-facto effort. The J11
was finished; DEC did not intend to do another PDP11 processor. (I
wrote a spec for one, primarily as an exercise in trying to do a
different
Yes, the PDP11 Architecture Handbook was a post-facto effort. The J11
was finished; DEC did not intend to do another PDP11 processor. (I wrote
a spec for one, primarily as an exercise in trying to do a different
microcode structure than the PLA/ROM of the LSI11/F11/J11, but I lost
it.) The
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