Diversified Technology CAT904 80286 single board PC

Tue Mar 16 13:02:02 CDT 2021

Ok. Thanks for verifying that info, I will try changing the BIOS setting. I do need to replace the
Dallas RTC as well.

On 3/16/21 12:57 PM, Jonathan Haddox via cctalk wrote:
>  I've got a Diversified Tech 286 SBC as well and was able to switch to 3.5 floppies by modifying the BIOS settings. Mine has the Dallas Real Time Clock chip and the battery was dead so the BIOS settings weren't preserved after a reboot. Fortunately I obtained a replacement chip available on ebay to fix that issue. I haven't got a manual to share, but it's a neat little board.
>
> Jonathan
>      On Tuesday, March 16, 2021, 12:00:02 PM CDT, <cctalk-request at classiccmp.org> wrote:  
>  
>  Send cctalk mailing list submissions to
>     cctalk at classiccmp.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
>     http://www.classiccmp.org/mailman/listinfo/cctalk
> or, via email, send a message with subject or body 'help' to
>     cctalk-request at classiccmp.org
>
> You can reach the person managing the list at
>     cctalk-owner at classiccmp.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of cctalk digest..."
>
>
> Today's Topics:
>
>   1. VAX rom patches - VAXstation 2000 SCSI boot, KA420 > 1GB boot
>       (David Brownlee)
>   2. Re: Diversified Technology CAT904 80286 single board PC
>       (david raingeard)
>   3. Re: PDP-10 I/O notes (Lars Brinkhoff)
>   4. who collects modems? (Tom Uban)
>   5. Re: Any info on a Western Peripherals DC-230 disk controller?
>       (Jay Jaeger)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 15 Mar 2021 18:36:23 +0000
> From: David Brownlee <abs at absd.org>
> To: rob at jarratt.me.uk,  "General Discussion: On-Topic and Off-Topic
>     Posts" <cctalk at classiccmp.org>, port-vax List <port-vax at netbsd.org>
> Cc: Malte Dehling <mdehling at gmail.com>
> Subject: VAX rom patches - VAXstation 2000 SCSI boot, KA420 > 1GB boot
> Message-ID:
>     <CAGN_6pbBzUQDJP-YiCQRZsaNOsGye1oWQ_ULyvavEd52ZrYp2Q at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> I had some extra A4 pages with a VAXstation 2000 manual which covered
> a preview PK2K kit for VMS, bootloader and ROM to allow use of the
> VAXstation 2000 SCSI controller for more than just tapes.
>
> Rough scan at http://sync.absd.org/vax/VAX-PK2K-preview-kit.pdf (the
> originals will be sent to someone who can do a better job)
>
> The pages led me to http://ftp.gwdg.de/pub/vms/ which includes some goodies:
> - http://ftp.gwdg.de/pub/vms/pk2k - uVAX-2k SCSI patches with source
> for boot roms, VMB & VMS
> - http://ftp.gwdg.de/pub/vms/ka420 - ROM patches for KA420/KA430 boot
> from >1GB disks
> - http://ftp.gwdg.de/pub/vms/dk-552/ - VMS 5.2 patch to allow to
> accept more SCSI disk devices
>
> (Starting a new thread in case there is (slightly) more general
> interest for anyone interested in using the onboard uVAX-2K SCSI
> controller more more than tapes (OK, OK, for anyone not running NetBSD
> on their uVAX-2K interested in etc etc) - have cross posted to cctalk
> & port-vax - hopefully not violating any conventions there)
>
> David
>
>
> ------------------------------
>
> Message: 2
> Date: Mon, 15 Mar 2021 16:41:54 +0100
> From: david raingeard <david.raingeard at gmail.com>
> To: Tom Uban <tom at figureeightbrewing.com>,  "General Discussion:
>     On-Topic Posts" <cctech at classiccmp.org>
> Subject: Re: Diversified Technology CAT904 80286 single board PC
> Message-ID:
>     <CAFvDS1SvQZFE_dzGQaheyLRpFqh-ZqFZyyWpBaMg_D22gZ+8kA at mail.gmail.com>
> Content-Type: text/plain; charset="UTF-8"
>
> i rather do  what doe with ibm dos
>
> Le lun. 15 mars 2021 ? 16:23, Tom Uban via cctech <cctech at classiccmp.org> a
> ?crit :
>
>> It dawned on me that I probably just need to change a BIOS setting. I
>> haven't dealt with PCs in so
>> long I've forgotten what to do...
>> I would still like to find a manual if someone has one.
>>
>>> I have a Diversified Technology CAT904 80286 single board PC in a system
>> with a 5.25" floppy drive
>> running DOS.
>>> I would like to switch the system to use a 3.5" drive and am wondering
>> if anyone has a manual for
>> the dip switch settings for this board or if I can simply add a 3.5" drive
>> as a 2nd device on the
>> floppy cable (guessing not without switch changes)?
>>> --tnx
>>> --tom
>>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 16 Mar 2021 06:04:44 +0000
> From: Lars Brinkhoff <lars at nocrew.org>
> To: Don Stalkowski via cctalk <cctalk at classiccmp.org>
> Subject: Re: PDP-10 I/O notes
> Message-ID: <7wzgz3zlab.fsf at junk.nocrew.org>
> Content-Type: text/plain
>
> Don Stalkowski wrote:
>> For what it's worth I've posted some notes on PDP-10 I/O from a course
>> taught by Mike Bennett at UWO in the early 1970s.
> Thank you!
>
> Interesting to see the DECtape file structure format.
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 16 Mar 2021 09:48:33 -0500
> From: Tom Uban <tom at figureeightbrewing.com>
> To: "General Discussion: On-Topic and Off-Topic Posts"
>     <cctalk at classiccmp.org>
> Subject: who collects modems?
> Message-ID:
>     <d22a7559-5c13-28e5-eec0-b1587b5c5a79 at figureeightbrewing.com>
> Content-Type: text/plain; charset=utf-8
>
> Clearing out stuff at my space, I have the following modems:
>
> NEC UltraLite-Series Image Modem Plus w/box
> CTS Datacomm 2424 ADA modem w/box
> Scout Plus External Data/Fax modem w/box
> Digital DF03 modem
>
> Any offers?
>
> --tom
>
>
>
> ------------------------------
>
> Message: 5
> Date: Tue, 16 Mar 2021 11:23:28 -0500
> From: Jay Jaeger <cube1 at charter.net>
> To: Josh Dersch via cctalk <cctalk at classiccmp.org>
> Subject: Re: Any info on a Western Peripherals DC-230 disk controller?
> Message-ID: <0877749a-9d01-466e-9e59-854977e13808 at charter.net>
> Content-Type: text/plain; charset=utf-8; format=flowed
>
> I may have a little info - but the info is in storage, and it is just a 
> "Western Peripherals Instruction Reference Card", apparently referring 
> to the DC-230, PDP-11 and TC-130 (the latter being a tape controller, 
> for which I do have some doc.)
>
> Once the weather warms up again - say, maybe this weekend, I'll trot off 
> to storage, bring it back and scan it.
>
> Back in the 1970's the UW Madison CS Department's 11/20 had a 3rd party 
> disk controller of some sort - one pack removable, one fixed, but I 
> don't remember who made it (might have been Wangco).
>
> JRJ
>
> On 3/12/2021 5:02 PM, Josh Dersch via cctalk wrote:
>> Any ideas what this disc controller is?
>>
>> https://www.ebay.com/itm/PDP-11-Backplane-Western-Peripherals-DC-230-Disk-Controller-DEC-Digital-PDP/353417412426
>>
>> Can't find much about this on the 'net, other than that it was a controller
>> for Diablo/Pertec style drives -- no idea if it's an RK11 clone or
>> something else entirely. Looks to be suitable for a PDP-11/20 given the
>> little notch missing from the side there, and the lack of a separate power
>> harness for the backplane.
>>
>> - Josh
>>
>
> End of cctalk Digest, Vol 78, Issue 16
> **************************************
>   