If you want to go reasonable fast, most common is v.35 and rs422,
data and clock are the same differential signals but status signals
are different.
Most (old fashion out of date) T1/E1 CSU/DSU's have v.35..
Thanks for your great job with the PY router!
--P
- Original Message -
>
I did a thing called SyncDongle.(
https://github.com/MattisLind/alfaskop_emu/tree/master/hardware/SyncDongle)
Essentially a BluePill with some level converters. It is using the SPI port
for sync communication.
Then I developed a BSC implementation and a HDLC implementation to use on
the
I do not know this guy, this came through my site, but if you do have info
that you think he might find useful and would like to share please contact
CECIL the Specific.
VintageComputer.net Inquiry Contact Information Name: CECIL CRAIN
Email: ccrain@rgoldlegal-got-com Phone:
Usually, we referred to the synchronous chip as a USynrt chip, a play on UART,
DMC can run 1.544 Mb/s, or full T1. DUP or DU11 were good to upto 56K.
Bisync, ADCCP, HDLC, DDCMP, BDLC were all options back in 77 but...
Yes, they are slow. I had a hard time trying to explain th the
Signetics design
In playing with DECnet I built a DDCMP implementation which deals with a byte
stream, normally from a UART. So that works nicely with async link DDCMP as
found in RSX and several other operating systems. But the speed is limited.
The other option would be synchronous links, which would enable
On 1/25/21 10:42 AM, Glen Slick via cctalk wrote:
In any case, it would still be
good to archive the contents of any of the programmable parts if
possible.
Yes that was the plan for mine as well.
I've been going through and finding all of my QBus disk controllers
to try to take pictures and
On Mon, 25 Jan 2021 at 03:54, Chris Zach via cctalk
wrote:
>
> I'm offering
> these disks for free.
>
> So if you need 50 disks with various versions of RT11 and god knows what
> data on them or 50 frisbees let me know and they're yours for the cost
> of shipping. I need to either pitch these
On Mon, Jan 25, 2021 at 7:35 AM Al Kossow via cctalk
wrote:
>
> Does anyone still have one of these with the 50 pin drive splitter card and
> could take some pictures?
>
> I picked one up a while ago and just noticed a 20 pin part is missing at U91,
> probably a PAL :-(
On 1/25/21 10:34 AM, Al Kossow via cctalk wrote:
Does anyone still have one of these with the 50 pin drive splitter card
and could take some pictures?
I picked one up a while ago and just noticed a 20 pin part is missing at
U91, probably a PAL :-(
What "drive splitter card" are you talking
On 01/25/2021 09:34 AM, Al Kossow via cctalk wrote:
Does anyone still have one of these with the 50 pin drive
splitter card and could take some pictures?
I picked one up a while ago and just noticed a 20 pin part
is missing at U91, probably a PAL :-(
I think I gave it away, but might have a
Does anyone still have one of these with the 50 pin drive splitter card and
could take some pictures?
I picked one up a while ago and just noticed a 20 pin part is missing at U91,
probably a PAL :-(
On 1/24/21 9:53 PM, Chris Zach via cctalk wrote:
Ok, with the RX02 running I see that 50 of these disks from Solarex were
formatted with the FD: driver which is probably the MXV21 controller.
Since I don't have a 5.4 version of this driver and to be honest will
not be putting the MXV11
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