Interesting, what kind of ESDI controllers do you have? They got
advanced features like cache, ordered seeks, and burst mode/block mode DMA?
C
On 4/18/2022 6:09 PM, Douglas Taylor via cctech wrote:
Because of this I'm holding on to my DEC Qbus ESDI controllers!!! You
never know
Doug
Bill,
Let me know right quick if you'll be at VCF East and I'll make you a pair, I
have both kinds of IDC ends. I'm heading out first thing tomorrow morning
though as I have work in the northeast before VCF East.
Thanks,
Jonathan
--- Original Message ---
On Monday, April 18th, 2022
Which is more generic.
ESDI, SMD or SCSI.
In my opinion, SCSI is as close are you are going to get to a universal
interface.
As for reading raw data from a drive. The newer the drive, the higher
the bit density and lower the strength of the magnetic fields and hence
the lower the flying
Because of this I'm holding on to my DEC Qbus ESDI controllers!!! You
never know
Doug
On 4/17/2022 4:35 PM, Guy Sotomayor via cctech wrote:
I chose ESDI and SMD fundamentally because the interface is 100%
digital (e.g. the data/clock separator is in the drive itself). So I
don't need to
Anyone know of a source for the felt pads that go on the non-head side
of an RX50? Missing at least one here.
C
Standard 100mil (.1 inch center) edge connectors are still very common
and available from most electronic parts distributors.
For example:
https://www.mouser.com/c/connectors/card-edge-connectors/
On 4/18/2022 5:48 PM, Jon Elson via cctalk wrote:
On 4/18/22 14:03, Bill Degnan via cctalk
On 4/18/22 14:03, Bill Degnan via cctalk wrote:
Hi all...
What is the cable partnumber for the IMSAI SIO2? I need to order a
set of cables. I thought in all of my boxes and boxes of cables I
might have one...but nope.
Here is a picture:
On 4/18/22 11:59, Bjoren Davis via cctalk wrote:
Hello Retrofolks,
I have a 1/2" 9-track magtape which is missing a BOT marker.
Does anyone have a recommendation for a reflective tape to
use to replace the BOT marker?
I was looking at
Hi all...
What is the cable partnumber for the IMSAI SIO2? I need to order a
set of cables. I thought in all of my boxes and boxes of cables I
might have one...but nope.
Here is a picture:
Guy,
I agree on keeping Linux out of the loop, to allow fast access on head
location, selection.
However, I'm not convinced on the fact that a whole cylinder must be on
blockram to achieve this. Given that ram access is fast (on Zynq with PL
working at 200MHz and HP port at 64bits I'm running
On 4/18/22 09:59, Bjoren Davis via cctalk wrote:
> Hello Retrofolks,
>
> I have a 1/2" 9-track magtape which is missing a BOT marker.
>
> Does anyone have a recommendation for a reflective tape to use to
> replace the BOT marker?
>
> I was looking at
>
Actually I am talking about emulating the bit stream, index to index - RLL
encoded and containing gaps, marks, headers, data, CRC, ECC, etc. Exactly as
the bit stream would come out of a theoretical disk drive, no bit shift, no
write splices, no instantaneous speed variation, no long term
Hello Retrofolks,
I have a 1/2" 9-track magtape which is missing a BOT marker.
Does anyone have a recommendation for a reflective tape to use to
replace the BOT marker?
I was looking at
https://www.amazon.com/Metalized-Polyester-Adhesive-Multiple-Available/dp/B07TXN8TD8,
but I have no idea
-Original Message-
From: ben [mailto:bfranc...@jetnet.ab.ca]
Sent: Saturday, April 16, 2022 1:39 PM
To: cctalk@classiccmp.org
Subject: Re: idea for a universal disk interface
On 2022-04-16 1:13 p.m., Tom Gardner via cctalk wrote:
> Tom
>
How do you handle the disk hardware timing,
Hello Paul,
using analog signal is not in my intentions, because usually you don't have
access to analog signals on disk interface.
For some media, e.g. floppy and MFM, you don't have a clock reference on the
interface, so you need to detect magnetic pulses and then reconstruct data from
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