> On Jan 31, 2022, at 11:04 AM, Noel Chiappa via cctalk
> wrote:
>
>> From: Bob Smith
>
>> the original UART was designed by DEC, Vince Bastiani was the project
>> lead and designer, Gordon Bell was behind the project, and it may have
>> been his idea.
>
> "Computer Engineering: A DEC View
> From: Bob Smith
> the original UART was designed by DEC, Vince Bastiani was the project
> lead and designer, Gordon Bell was behind the project, and it may have
> been his idea.
"Computer Engineering: A DEC View of Hardware Systems Design" covers this, in
a footnote on pg. 73.
> On Jan 30, 2022, at 4:44 PM, John Forecast via cctalk
> wrote:
>
> ...
> Is it possible that the DMX11 was a CSS product?
Clearly it is; the Option/Module list (1983 edition, from Bitsavers) says so.
It shows the controller and three different 64 port line units, for different
signal
> On Jan 30, 2022, at 2:43 PM, Chris Zach via cctalk
> wrote:
>
> ...
> From what I can see, the the kmc11 was an M8204 single board which is
> different from the 8200 used in the dmc11. I had a DMC11 somewhere.
>
> From the books, the kmc11 had an "lsi11 on board", 1k of 16 bit ram, 1k
On 1/30/2022 2:56 PM, Glen Slick via cctalk wrote:
On Sun, Jan 30, 2022 at 11:43 AM Chris Zach via cctalk
wrote:
From the books, the kmc11 had an "lsi11 on board", 1k of 16 bit ram, 1k
of 8 bit data memory a 300ns cycle time, 16 bit microprossor with a 16
bit micro-instruction bus and 8
On Sun, Jan 30, 2022 at 11:43 AM Chris Zach via cctalk
wrote:
>
> From the books, the kmc11 had an "lsi11 on board", 1k of 16 bit ram, 1k
> of 8 bit data memory a 300ns cycle time, 16 bit microprossor with a 16
> bit micro-instruction bus and 8 bit data path. This is according to the
> 1980
> On Jan 30, 2022, at 2:43 PM, Chris Zach via cctalk
> wrote:
>
> Hm. Looking i see the dj11 had a silo but not dma.
>
> The only thing I can see that did Async DMA was the COMM-IO-P board. That was
> a product in 1980 timeframe, based on the KMC11 processor. With six DZ11's
> you have 48
Hm. Looking i see the dj11 had a silo but not dma.
The only thing I can see that did Async DMA was the COMM-IO-P board.
That was a product in 1980 timeframe, based on the KMC11 processor. With
six DZ11's you have 48 serial ports in a 9 board configuration.
Now for trying to unravel what the
> From: Chris Zach
> Maybe that is the dhv11.
The DH11, DHV11 and DHU11 are all very similar, although not 100.00% program
compatible.
(The DHQ11 can be set to exactly emulate either the DHV11 or DHU11.) So, all
provide
DMA output, but not DMA input.
Differences with the DH11 include
http://www.bitsavers.org/pdf/dec/qbus/EK-DHQ11-UG-002.pdf
DHQ11 User Guide, EK-DHQ11-UG.002
The main application of the M3107 DHQ11 is for interactive terminal
handling; it can also be used for data concentration and real-time
processing. It has two programming modes, DHV11 and DHU11. The
Maybe that is the dhv11. Or the dv11 I'll look it up tomorrow
On January 29, 2022 5:12:41 PM EST, Paul Koning via cctalk
wrote:
>
>
>> On Jan 29, 2022, at 3:58 PM, Noel Chiappa via cctalk
>> wrote:
>>
>>> From: Paul Koning
>>
>>> DH-11 is unusual in that it has DMA in both directions
>>
>>
> On Jan 29, 2022, at 3:58 PM, Noel Chiappa via cctalk
> wrote:
>
>> From: Paul Koning
>
>> DH-11 is unusual in that it has DMA in both directions
>
> McNamara's DH11? (I don't know of another DECdevice of that name.) Per:
>
>
>
> From: Paul Koning
> DH-11 is unusual in that it has DMA in both directions
McNamara's DH11? (I don't know of another DECdevice of that name.) Per:
http://www.bitsavers.org/pdf/dec/unibus/EK-ODH11-OP-002_DH11_Asynchronous_16-line_Multiplexer_Users_Manual_Sep76.pdf
it's DMA on
> On Jan 29, 2022, at 12:28 AM, Chris Zach via cctalk
> wrote:
>
> Old question: I'm looking through some old reports from 1977 about a failed
> DEC project with the DMX11 multiplexer system and there is reference to the
> following key items:
>
> 1) The DMX was designed to handle block
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