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Johnnya101
May 20th, 2017, 01:53 PM
Hello!

I've got a Morrow MD-2 with the MDT-20 terminal (I think it's that) and keyboard.

I'd like to get this thing back up and running again.

When turned on, nothing happens for a few seconds, then it beeps and it asks for a CP/M disk.

ISSUES:
No CP/M disk :(
Terminal has diagonal scan lines. I've had this on an Apple RGB and it was horizontal sync.

Does anyone know where I can get a CP/M disk for this, along with programs?
And what about the diagonal lines?

Thank you!

retrogear
May 22nd, 2017, 03:05 AM
There are TD0 images of system disks in the Don Maslin archive.
http://www.retroarchive.org/maslin/
You will need to image them to disk on an older pc with TeleDisk
http://www.classiccmp.org/dunfield/img54306/teledisk.htm

As far as the terminal, I think since it's a serial type that the video sync would be internal to the display.
Might even be an internal horizontal frequency adjustment? A manual is also on Dunfield's site but only covers operation, not schematics or adjustments.
http://www.classiccmp.org/dunfield/morrow/mdadm20.pdf

Hope this helps,

Larry G

fritzeflink
May 22nd, 2017, 03:16 AM
http://oldcomputers.dyndns.org/public/pub/rechner/morrow/

https://amaus.net/static/S100/morrow/

http://bitsavers.informatik.uni-stuttgart.de/bits/Morrow/

http://bitsavers.informatik.uni-stuttgart.de/pdf/morrow/

ldkraemer
May 22nd, 2017, 01:23 PM
Here is the information you need:
ftp://ftp.mrynet.com/pub/operatingsystems/Morrow/new/CPM_and_BIOS_Software_Versions.txt

Morrow:
ftp://ftp.mrynet.com/pub/operatingsystems/Morrow/

ROM:
ftp://ftp.mrynet.com/pub/operatingsystems/Morrow/firmware/ROM/

RAWDISK: (Interesting!)
ftp://ftp.mrynet.com/pub/operatingsystems/Morrow/Distributions/rawdisks/

CP/M Versions:
ftp://ftp.mrynet.com/pub/operatingsystems/Morrow/Distributions/

What type Floppy Drives do you have? SS/DD, DS.DD?

Interested in a 3.5" on the Morrow?

Want cpmtools & libdsk Definitions for Morrow?
Versions 2.21 of cpmtools and Version 1.5.4 of libdsk allow accessing .TD0 and .IMD images directly. It works good thanks
To John Elliott. http://www.seasip.info/Unix/LibDsk/

Larry

Johnnya101
May 22nd, 2017, 01:37 PM
Thank you for all these links everyone! I am currently working with Larry right now on getting some disks made...

Eventually I am going to make my own and will need some help then. Ive got a 98SE machine coming soon, and from what Ive heard will need DOS and a 5.25 drive.

I THINK I have the SS drives, not sure... I had the SW200 drives I think they were called.

Johnnya101
May 27th, 2017, 02:08 PM
Hi again,

Larry got me some disks made! :)

However, when I insert them into drive A, I get that the drive is not ready. Yes, they are inserted correctly, and yes the latch is closed. I took apart the MD again to check it out, and I noticed that the belt for A was half lying on the logic board. I took the drive out and the belt is at least an inch too long. The motor has no chance on spinning it with the belt this big. B is pretty bad too.

Would this be causing the drive not ready? Also, where can I get new belts OR is there a method to cut them back to length or something?

tingo
May 30th, 2017, 01:05 PM
Hmm, wasn't there a thread on these forums about putting floppy drive belts into boiling (or hot) water to resurrect them? Or was that on the cc-tech mailing list? Try to search the net for it.

Johnnya101
May 30th, 2017, 01:16 PM
Right now I'm talking with someone who can make me a new one, but I'll search about that now.

Al Kossow
May 30th, 2017, 02:05 PM
Hmm, wasn't there a thread on these forums about putting floppy drive belts into boiling (or hot) water to resurrect them? Or was that on the cc-tech mailing list? Try to search the net for it.

that was DC-xxx series cartridge tape tension bands, and it really doesn't work that well. They do shrink, but they break under tension.

Chuck(G)
May 30th, 2017, 02:15 PM
Yes a bad belt will cause a "not ready". You might be able to fit an old VCR belt to the job. You'll have to get the exact length, which can be had by taking a piece of string to measure.

One of many places selling flat belts (http://www.smcelectronics.com/vcrrep.htm)

Johnnya101
May 31st, 2017, 09:12 AM
Thanks guys for the help. Can't wait to get it running! Again, talking with someone now on getting some new ones made. I'll update if it happens.