22 Feb
2022
22 Feb
'22
2:27 p.m.
The 11/83 question sounds like a job for SCSI2SD to me. Install a system
with simh. dd the resulting disk image to your sd card. Hook the SCSI2SD
up to your 11/83 and boot from the card. Copy the contents of that drive
to your real SCSI drive. Done.
SCSI2SD cards are not expensive and are a tremendous value for money.
22 Feb
22 Feb
5:20 p.m.
I'm sure that will work. Unfortunatly dd is a linux command.
I only have windows PC's.
simH is highly complex and needs a lot of setup. ( I know - I tried -
total nightmare)
It does not have support for the CMD CDD 220 SCSI controller and a RH-18A
I have a working 11/83 with a 2gig SCSI drive and RX50.(it passes the
diags and boots XXDP+)
None of the methods suggested so far gets me an RX50 bootable OS install
set.
Latest fail.. putR does not as claimed write disk images to a real RX50
under W95. (write protect error)
The SCSI25D costs? $150 US in the UK.
So the? simple requirement to copy an RX50 disk image (which I have) to
an RX50 remains.
Rod
On 22/02/2022 19:27, Adam Thornton via cctalk wrote:
The 11/83 question sounds like a job for SCSI2SD to
me. Install a system
with simh. dd the resulting disk image to your sd card. Hook the SCSI2SD
up to your 11/83 and boot from the card. Copy the contents of that drive
to your real SCSI drive. Done.
SCSI2SD cards are not expensive and are a tremendous value for money.
6:16 p.m.
On Tue, Feb 22, 2022 at 2:20 PM Rod Smallwood via cctalk
<cctalk at classiccmp.org> wrote:
I'm sure that will work. Unfortunatly dd is a linux command.
I only have windows PC's.
You never answered if you have a SCSI controller in your PC, or have
the ability to add a SCSI controller to your PC. If you don't, the
whole discussion of using 'dd' or equivalent is moo.
simH is highly complex and needs a lot of setup. ( I
know - I tried -
total nightmare)
If you think setting up and using SIMH is highly complex, wait until
you find out how complex setting up and using real PDP-11 hardware is.
It does not have support for the CMD CDD 220 SCSI
controller and a RH-18A
Huh? SIMH emulates MSCP controllers and attached disks of arbitrary
size just fine.
6:29 p.m.
On 22/02/2022 23:16, Glen Slick via cctalk wrote:
On Tue, Feb 22, 2022 at 2:20 PM Rod Smallwood via
cctalk
<cctalk at classiccmp.org> wrote:
PDP hardware setup ? Well I worked for digital between 1975 and 1985.
R
I'm sure that will work. Unfortunatly dd is a
linux command.
I only have windows PC's.
You never answered if you have a SCSI controller in your PC, or have
the ability to add a SCSI controller to your PC. If you don't, the
whole discussion of using 'dd' or equivalent is moo.
simH is highly complex and needs a lot of setup.
( I know - I tried -
total nightmare)
If you think setting up and using SIMH is highly complex, wait until
you find out how complex setting up and using real PDP-11 hardware is.
It does not have support for the CMD CDD 220 SCSI
controller and a RH-18A
Huh? SIMH emulates MSCP controllers and attached disks of arbitrary
size just fine. 
6:32 p.m.
On Tue, Feb 22, 2022 at 3:29 PM Rod Smallwood via cctalk <
cctalk at classiccmp.org> wrote:
On 22/02/2022 23:16, Glen Slick via cctalk wrote:
Huh? SIMH emulates MSCP controllers and attached disks of arbitrary
size just fine.
PDP hardware setup ? Well I worked for digital between 1975 and 1985.
Then you should be able to make SIMH work, no problem.
- Josh
On Tue, Feb 22, 2022 at 2:20 PM Rod Smallwood via
cctalk
<cctalk at classiccmp.org> wrote:
RH-18A
I'm sure that will work. Unfortunatly dd is a
linux command.
I only have windows PC's.
You never answered if you have a SCSI controller in your PC, or have
the ability to add a SCSI controller to your PC. If you don't, the
whole discussion of using 'dd' or equivalent is moo.
simH is highly complex and needs a lot of setup.
( I know - I tried -
total nightmare)
If you think setting up and using SIMH is highly complex, wait until
you find out how complex setting up and using real PDP-11 hardware is.
> It does not have support for the CMD CDD 220 SCSI controller and a
R
7:29 p.m.
You could boot a packaged Linux that doesn't need installation but runs directly from
the boot device. I haven't done this but I know they are out there and easy to use.
SimH complex and lots of setup? Not my experience. The documentation may be sparse in
places, as I found when configuring a PDP-10 setup, but the PDP-11 setups are well
documented.
SCSI controller, that's beside the point. I assume it looks to the PDP-11 as an MSCP
controller, right? It would have to be, else you'd have no chance of running a
standard OS. If so, you'd just tell SIMH to configure an MSCP controller with a disk
of size matching what you have.
When you said "won't write a disk image to a real RX50" do you mean an RX50
drive, or an RX50 floppy in a plain PC 5.25 inch drive? I don't know about the
former, but the latter has long worked for me. I haven't used Windows for stuff like
that in ages, and don't want to use it if I can avoid it, but my RSTSFLX 2.6 can be
build for DOS (using DJGPP). I don't have an executable of that version handy but
could probably create one. That doesn't create from images, though; it manipulates
RSTS file systems. A simple program to copy an image, along the lines of the rx50.py I
mentioned, would not be hard to make.
paul
On Feb 22, 2022, at 5:20 PM, Rod Smallwood via cctalk
<cctalk at classiccmp.org> wrote:
I'm sure that will work. Unfortunatly dd is a linux command.
I only have windows PC's.
simH is highly complex and needs a lot of setup. ( I know - I tried - total nightmare)
It does not have support for the CMD CDD 220 SCSI controller and a RH-18A
I have a working 11/83 with a 2gig SCSI drive and RX50.(it passes the diags and boots
XXDP+)
None of the methods suggested so far gets me an RX50 bootable OS install set.
Latest fail.. putR does not as claimed write disk images to a real RX50 under W95. (write
protect error)
The SCSI25D costs $150 US in the UK.
So the simple requirement to copy an RX50 disk image (which I have) to an RX50 remains.
Rod
On 22/02/2022 19:27, Adam Thornton via cctalk wrote:
> The 11/83 question sounds like a job for SCSI2SD to me. Install a system
> with simh. dd the resulting disk image to your sd card. Hook the SCSI2SD
> up to your 11/83 and boot from the card. Copy the contents of that drive
> to your real SCSI drive. Done.
>
> SCSI2SD cards are not expensive and are a tremendous value for money.
10:47 p.m.
On 2/22/2022 6:29 PM, Paul Koning via cctalk wrote:
You could boot a packaged Linux that doesn't need
installation but runs directly from the boot device. I haven't done this but I know
they are out there and easy to use.
I use Clonezilla for standalone Linux stuff (including backups) - they
have ready to run UEFI USB images and CD images. You can get to a
command prompt and enter "sudo bash" to get a root shell. Useful for
all sorts of stuff.
There are also Ubuntu "live" CD images out there, or at least were, a
few years back.
JRJ
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