I just purchased an RK05 Controller for my PDP-8/E, does this emulator
work to emulate RK05 packs? If it does then maybe I can use it as mass
storage until i can find an RK05 (or Plessey or Diablo clones) .
Thanks...
On 9/24/2021 3:19 PM, David Gesswein via cctalk wrote:
On Tue, Sep 21,
On Tue, Sep 21, 2021 at 12:15:12PM -0400, Paul Koning wrote:
> > On Sep 21, 2021, at 12:00 PM, Jonathan Stone via cctalk
> > wrote:
> >
> > The RD53s in both Microvax 2000s are dead. I'm reluctant to buy more 30+
> > year old rotating media.
> > If I'm going to buy a disk emulator, I'd much
, patched Microvax-2000 SCSI-boot EPROM images?
Ok..sounds good so far..
I have an Labtool-48 Programmer for example..thats an old Promer with an
parallelport. Software is available for an OEM Device and I'm using that.
Forgot in the moment what this was..but I can check that later.
There are at least
> One of my Fall projects is to figure out why my Data I/O 29A isn't
> working. It's been sitting for years and when I got it out last year,
> it didn't pass self-test. I need to spend some time looking over the
> posts in that group to see if my symptoms are common.
The diagnostics are pretty
On Tue, Sep 21, 2021 at 4:37 PM Jonathan Chapman via cctalk
wrote:
> > The DEC-badged Data-IO " on eBay is tempting, but expensive, and I don't
> > know where to find software.
>
> If it is just a regular Data I/O underneath, head over to the groups.io page:
>
> https://groups.io/g/DataioEPROM/
On Tuesday, September 21, 2021, 01:37:28 PM PDT, Jonathan Chapman
wrote:
>> The DEC-badged Data-IO " on eBay is tempting, but expensive, and I don't
>> know where to find software.
>If it is just a regular Data I/O underneath, head over to the groups.io page:
>
> The DEC-badged Data-IO " on eBay is tempting, but expensive, and I don't know
> where to find software.
If it is just a regular Data I/O underneath, head over to the groups.io page:
https://groups.io/g/DataioEPROM/
Thanks,
Jonathan
On Tuesday, September 21, 2021, 05:39:23 AM PDT, Holm Tiffe via cctalk
wrote:
>I've tried this almost 2 years before..and it worked "somewhat".
>An VS2000 booted up in the first stage but the NetBSD Kernel couldn't
>mount root since nothing in the loader expected a disk at the NCR SCSI
On Tuesday, September 21, 2021, 11:02:38 AM PDT, Antonio Carlini via cctalk
wrote:
> My recollection is that the MicroVAX 2000 SCSI isn't complete and was
> only intended for the tape unit. Whether its performance beats an RD54
> will be interesting to see.
The ROM/VMB support certainly
On 21/09/2021 18:38, Jonathan Stone via cctalk wrote:
(At least for Qbus. At eBay prices, even RQDX3 plus distribution panel plus emulator, is cheaper than bootable SCSI controller plus SCSI emulator). SCSI performance will still be better.
My recollection is that the MicroVAX 2000
On Tuesday, September 21, 2021, 09:15:20 AM PDT, Paul Koning via cctalk
wrote:
>> On Sep 21, 2021, at 12:00 PM, Jonathan Stone via cctalk
>> wrote:
>>
>> The RD53s in both Microvax 2000s are dead. I'm reluctant to buy more 30+
>> year old rotating media.
>> If I'm going to buy a disk
On Tue, Sep 21, 2021 at 9:00 AM Jonathan Stone via cctalk
wrote:
>
> One of the reasons I got the 2000s is to format MFM drives for an RQDX3 (I
> don't have any PDP-11 CPUs). I have a CMD CQD-420 Qbus SCSi controller, and
> an MTI almost-equivalent. I've seen Glen Slick's reverse engineering
On 9/21/2021 12:00 PM, Jonathan Stone wrote:
The RD53s in both Microvax 2000s are dead. I'm reluctant to buy more
30+ year old rotating media.
If I'm going to buy a disk emulator, I'd much prefer SCSI to MFM, for
the obvious performance reasons.
Been thinking about that: I'm tempted to open
> On Sep 21, 2021, at 12:00 PM, Jonathan Stone via cctalk
> wrote:
>
> The RD53s in both Microvax 2000s are dead. I'm reluctant to buy more 30+ year
> old rotating media.
> If I'm going to buy a disk emulator, I'd much prefer SCSI to MFM, for the
> obvious performance reasons.
Emulators
The RD53s in both Microvax 2000s are dead. I'm reluctant to buy more 30+ year
old rotating media.
If I'm going to buy a disk emulator, I'd much prefer SCSI to MFM, for the
obvious performance reasons.
Reseller price for a Maxtor XT-2190 (RD54) is just over US $1000. Disk
Emulators are
He could also just fix the RD53 and boot off that, then transfer to the
much faster SCSI. I still keep the RX02's around on my pdp11 because I
can boot BRU64k for tape backups. It works. :-)
On 9/21/2021 10:39 AM, Peter Coghlan via cctalk wrote:
If you want to try other options, maybe you
Jonathan Stone wrote:
>
> I recently rescued two Microvax-2000s but both have dead RD53s. Does
> anyone have a ROMable image of the Microvax 2000/Vaxstation 2000 boot-PROM
> patches from Wolfgang Moeller at http://ftp.gwdg.de/pub/vms/pk2k/ ? �
> I'm looking to install NetBSD, not VMS and I
Jonathan Stone via cctalk wrote:
> I recently rescued two Microvax-2000s but both have dead RD53s. Does anyone
> have a ROMable image of the Microvax 2000/Vaxstation 2000 boot-PROM patches
> from Wolfgang Moeller at http://ftp.gwdg.de/pub/vms/pk2k/ ? I'm looking to
> install NetBSD, not VMS
> -Original Message-
> From: Ethan Dicks
> Sent: 21 September 2021 06:39
> To: Dave Wade ; General Discussion: On-Topic
> and Off-Topic Posts
> Cc: Jonathan Stone
> Subject: Re: Burnable, patched Microvax-2000 SCSI-boot EPROM images?
>
> On Mon, Sep 20, 2021
On Mon, Sep 20, 2021 at 5:24 PM Dave Wade G4UGM via cctalk
wrote:
> Do you know what type of ROM/PROM is needed
4x 27512 (32-bit wide image)
I have a MicroVAX 2000 but haven't managed to get that SCSI hack working myself.
It's been many years since I last fiddled with it.
-ethan
A web-page I found over the weekend said M27512-2, but right now i cannot find
it. Several sources say 256KB PROM, and the photos show 4 EPROMs, which is
consistent with 64Kx8-bit. I have to dash now, more in a few hours.
On Monday, September 20, 2021, 02:24:51 PM PDT,
wrote:
Do you
Do you know what type of ROM/PROM is needed
Dave
> -Original Message-
> From: cctalk On Behalf Of Jonathan Stone
> via cctalk
> Sent: 20 September 2021 20:02
> To: cctalk@classiccmp.org; port-...@netbsd.org
> Subject: Burnable, patched Microvax-2000 SCSI-boot EPROM images?
>
> I
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