Building the KLyball D-13

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Jeff
Posts: 370
Joined: Fri Mar 07, 2014 4:44 am
Location: British Columbia, Canada

Re: Building the KLyball D-13

Post by Jeff »

I figured it out.
Connect 2 Drives.jpg
Connect 2 Drives.jpg (115.54 KiB) Viewed 46288 times
I also made a schematic to help figure out the signals when hooking up other floppy drives. See attached.
Klyball D13 Schematic.pdf.zip
(53.25 KiB) Downloaded 1735 times
/Jeff
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Jeff
Posts: 370
Joined: Fri Mar 07, 2014 4:44 am
Location: British Columbia, Canada

Re: Building the KLyball D-13

Post by Jeff »

Well I am having problems getting my Superboard to boot. I have made a boot disk from OS65 v3.1 for C1P but it gets 7 tracks in and hangs. I have dumped the disk and compared it to the split files and it is perfect. I have tried 2 different drives making a boot disk with each drive. It worked a month ago and once today so I thought it was a memory problem. I wrote a ram tester and it all checks out fine. I even swapped the ram out for different ram. Still won't boot.

I would like to try a different boot disk but I do not know of any.
Does anyone have or know of other boot disk images for the C1P non rev D?
Does anyone know of a more robust Ram tester?
Does anyone have any suggestions on what else I might try?

Frustrated
/Jeff
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Klyball
Posts: 230
Joined: Tue Dec 09, 2014 12:53 am

Re: Building the KLyball D-13

Post by Klyball »

I would recheck your timings on the 610 and separator, also are these 5.25 disks on old drives or did you switches drives from the one you made the disk with
do a memory dump after it hangs
Replica 600 Rev D:8K,CEGMON
Replica 610 Rev B: 24k,MPI B-51 with Custom Data separator D-13
510 on the bench/replica 582 backplane/replica 470a /replica 555/original 570B/2 x Shugart 851
Ongoing : 630 ,620 ,510,542c,custom 590,SA1200,592,594,596,598
Jeff
Posts: 370
Joined: Fri Mar 07, 2014 4:44 am
Location: British Columbia, Canada

Re: Building the KLyball D-13

Post by Jeff »

I will re-check the timings, but I don't think they are out because when I do a disk dump, every track and sector reads back EXACTLY matching the data that I sent and SAved.

I am using, firstly the Epson dual 3.5 and 5.25 drive with disks I created about 3 weeks ago with that drive. I suspected the drive, so I switched it out with one of the Fujitsu 360K drives, of course, it wouldn't read the disks made with the Epson, so I made an entirely new startup disk from the split files. I disk-dumped it and compared each track and sector and it matched exactly also.

Both disks boot to track 7 and hang.

I figured that during the disk creation process I wasn't using much high memory and neither with the disk dump program, so perhaps, when booting it loads enough to hit some bad ram higher up in memory. But my BASIC memory test passed fine. The other reason I suspect memory is that last month when I made the Epson disk, I was using borrowed ram from my C4P, and since then, my new ram arrived, so I fully populated the 610.

Im not sure how to do a memory dump after it hangs.... or what to look for when I do.
Last edited by Jeff on Thu Jun 25, 2015 5:56 am, edited 2 times in total.
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Klyball
Posts: 230
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Re: Building the KLyball D-13

Post by Klyball »

Watch those rams with the flimsy pins I had a batch that checked out then started dying they seemed to work but when I ran them in my ram tester they failed
Replica 600 Rev D:8K,CEGMON
Replica 610 Rev B: 24k,MPI B-51 with Custom Data separator D-13
510 on the bench/replica 582 backplane/replica 470a /replica 555/original 570B/2 x Shugart 851
Ongoing : 630 ,620 ,510,542c,custom 590,SA1200,592,594,596,598
Jeff
Posts: 370
Joined: Fri Mar 07, 2014 4:44 am
Location: British Columbia, Canada

Re: Building the KLyball D-13

Post by Jeff »

I have narrowed things down a bit. When the machine is cold, the disk boots fine for the first few minutes. After that, it fails around track 7. So its definitely hardware, and its likely heat related.

I ran an exhaustive memory test overnight and all the ram checked out fine. I have replaced the ACIA and the PIA and the problem persists. Im not sure what next to try.
Is there anything on the separator that changes with heat?

/Jeff
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MK14HAK
Posts: 356
Joined: Wed Mar 16, 2011 1:49 am
Location: New Zealand

Re: Building the KLyball D-13

Post by MK14HAK »

Jeff there is a memory test on osiweb/software /utilities that Phil uploaded.
600RevB:16K,2MHz,64x32,470,CEGMON
SuperKit:502,540B,542B,CEGMON, 8" and 5" FDDs
Cards:PE IO,6522 D-A-D, AY3-8910,ProgramGraphics,Color,UK101
WIP:HexDOS,FDD Emulator
Jeff
Posts: 370
Joined: Fri Mar 07, 2014 4:44 am
Location: British Columbia, Canada

Re: Building the KLyball D-13

Post by Jeff »

I tried it out... just hangs... so Im looking at the code now.

/Jeff
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BillO
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Location: Canada
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Re: Building the KLyball D-13

Post by BillO »

Hi Folks,

Trying to figure out why I can only write $24 to a disk.

In this scope image, the yellow trace is the inverted data coming from the floppy ACIA as I write $AA to it. The blue trace is pin-9 going to the D-13. Does this look correct?
write-data.jpg
write-data.jpg (61.24 KiB) Viewed 46230 times
Box stock Superboard II Rev. B
KLyball replica 600D, replica 610 & KLyball Data Separator
OMS SBME and SBME+ memory cards
OMS Digi-Mule expansion bus
KLyball memory card
dave
Site Admin
Posts: 710
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Re: Building the KLyball D-13

Post by dave »

At a glance, it looks correct. 1 start bit, 10101010, 1 stop bit.

The blue trace looks like clock + data pulse for 1, clock only for 0, providing the frequency modulation. Each pulse in the blue trace should be close to 400 ns.
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