Technics KN 2000 / Disk Change
Technics KN 2000 / Disk Change
Hi all!
Today I got my HXC2001 Revision "F".
I wired it into an Technics KN 2000, which works almost perfectly now. The only Problem is, i can't get the Disk Change detection to work.
The Technics KN 2000 uses a PC Compatible 720KB drive with Special 24-pin connector.
This is the wiring schematic I used: http://www.yamahaforums.co.uk/forum/vie ... 181#p20560
Can someone please tell me, which pin on the hxc is supposed to be the disk-change pin and how this pin behaves?
As far as I could read from the schematics, it should be pin 2, but this pin never changes it's state.
Oh, I forgot:
I also tried to use Pin 2 on the 34 pin connector instead of pin 34 as disk-change detection. Both don't work..
Today I got my HXC2001 Revision "F".
I wired it into an Technics KN 2000, which works almost perfectly now. The only Problem is, i can't get the Disk Change detection to work.
The Technics KN 2000 uses a PC Compatible 720KB drive with Special 24-pin connector.
This is the wiring schematic I used: http://www.yamahaforums.co.uk/forum/vie ... 181#p20560
Can someone please tell me, which pin on the hxc is supposed to be the disk-change pin and how this pin behaves?
As far as I could read from the schematics, it should be pin 2, but this pin never changes it's state.
Oh, I forgot:
I also tried to use Pin 2 on the 34 pin connector instead of pin 34 as disk-change detection. Both don't work..
Re: Technics KN 2000 / Disk Change
I did some more testing:
It seems that the KN2000 relies on the /ready Signal to see if there is a disk or not.
If I connect the /DiskChange Signal from the HXC to the /READY Line of the KN2000, it says 'No Disk' when a Disk is inserted and tries to read when the disk is not inserted.
Unfortunately, the /Ready Line on the HXC does nothing (while emulating a DOS 720 KB Disk).
It seems that the KN2000 relies on the /ready Signal to see if there is a disk or not.
If I connect the /DiskChange Signal from the HXC to the /READY Line of the KN2000, it says 'No Disk' when a Disk is inserted and tries to read when the disk is not inserted.
Unfortunately, the /Ready Line on the HXC does nothing (while emulating a DOS 720 KB Disk).
Re: Technics KN 2000 / Disk Change
lukas85 wrote:I did some more testing:
It seems that the KN2000 relies on the /ready Signal to see if there is a disk or not.
If I connect the /DiskChange Signal from the HXC to the /READY Line of the KN2000, it says 'No Disk' when a Disk is inserted and tries to read when the disk is not inserted.
Unfortunately, the /Ready Line on the HXC does nothing (while emulating a DOS 720 KB Disk).
Try this : remove the sdcard, press select -> Interface CFG -> Try shugart mode.
The pin 02 / Pin34 behavior may be changed as you want.
I send to you an new firmware with more possibilities about these settings.
Re: Technics KN 2000 / Disk Change
Now everything works! And I learned a lot on the SD Floppy Emulator. Many Thanks to everyone who contributed to this great Piece of hard- and Software!
So here's the solution for the KN 2000:
So here's the solution for the KN 2000:
Code: Select all
KN2000 HXC2001
1 +5V POWER Connector
2 +5V POWER Connector
3 NC
4 +5V POWER Connector
5 +5V POWER Connector
6 /READY PIN 34 (READY)
7 GND POWER Connector
8 GND POWER Connector
9 /HSEL Pin 32 (/SIDE1)
10 GND Some ODD Pins on the Floppy Cable (all Odd Pins are GND)
11 /RDATA Pin 30 (RDATA)
12 /WPRT Pin 28 (WPRT)
13 /TRK0 Pin 26 (Track0)
14 /WGATE Pin 24 (WGate)
15 GND Some ODD Pins on the Floppy Cable (all Odd Pins are GND)
16 /WDATA Pin 22 (Wdata)
17 GND Some ODD Pins on the Floppy Cable (all Odd Pins are GND)
18 /STEP Pin 20 (Step)
19 /HDIR Pin 18 (HDIR)
20 /MTON Pin 10 (MOTA)
21 NC
22 /DS0 Pin 14 (DRVSA) (=ID2A)
23 /INDEX Pin 8 (IDX)
24 /DCHG Pin 2 (DCHG)
DISK Layout: 720 KB DD
IMPORTANT: Interface Mode: Generic Shugart
Re: Technics KN 2000 / Disk Change
Many Thanks Jeff! That's exactly what did the trick. I just missed your post as I was typing the solution
Re: Technics KN 2000 / Disk Change
After putting everything back together and trying to work with it, I found one small issue:
If I try to format a disk, the disk image is screwed up a bit. I can afterwards not delete any files on the keyboard, and also not overwrite them.
Existing files still show up after the formatting and can be loaded.
Actually, I have no idea what the keyboard does when "formatting". It goes through all tracks and in the end it says "completed".
This is only a small issue, because there is no need to use this function, you can delete single files on the keyboard, and delete the whole disk on the pc using the diskbrowser, if necessary.
I just wanted to report it, so it can be added to a compatibility list or whatever.
For firmware I tried both the 1.7.2.0 and 1.7.5.0a. There is no difference in working with the KN 2000.
PS.
My father is very happy that he can now use his Keyboard again.
If I try to format a disk, the disk image is screwed up a bit. I can afterwards not delete any files on the keyboard, and also not overwrite them.
Existing files still show up after the formatting and can be loaded.
Actually, I have no idea what the keyboard does when "formatting". It goes through all tracks and in the end it says "completed".
This is only a small issue, because there is no need to use this function, you can delete single files on the keyboard, and delete the whole disk on the pc using the diskbrowser, if necessary.
I just wanted to report it, so it can be added to a compatibility list or whatever.
For firmware I tried both the 1.7.2.0 and 1.7.5.0a. There is no difference in working with the KN 2000.
PS.
My father is very happy that he can now use his Keyboard again.
Re: Technics KN 2000 / Disk Change
About the format support, i am actually working on this de next V1.8.X.X firmware generation.
Can you provide some pictures of the KN2000 with the HxC ?
Can you provide some pictures of the KN2000 with the HxC ?
Re: Technics KN 2000 / Disk Change
Thanks to Jeff's work I can now confirm that the HxC2001 works completely flawless in the KN2000 with Firmware V1.8.1.6a.
With this Firmware I am able to format virtual disks, which did not work before.
Afterwards they are empty as expected and can be used as if the image was newly created.
With this Firmware I am able to format virtual disks, which did not work before.
Afterwards they are empty as expected and can be used as if the image was newly created.
Re: Technics KN 2000 / Disk Change
Hello
Sorry to revive an old thread, but I have to revive my old KN2000
I thought I was 'getting away with it' for too long, but the FDD has given up the ghost.
I've used a USB floppy drive to rip fdd images of my floppy collection to disk files, so now I'm looking to replace the fdd in my KN2000 with a floppy emulator
Can anyone tell me which model of fdd emulator, and firmware I need so this will work? Also, any hardware modifications I might need to make to the keyboard and/or the emulator please?
Not looking forward to taking my baby apart, we've been together a long time
Sorry to revive an old thread, but I have to revive my old KN2000
I thought I was 'getting away with it' for too long, but the FDD has given up the ghost.
I've used a USB floppy drive to rip fdd images of my floppy collection to disk files, so now I'm looking to replace the fdd in my KN2000 with a floppy emulator
Can anyone tell me which model of fdd emulator, and firmware I need so this will work? Also, any hardware modifications I might need to make to the keyboard and/or the emulator please?
Not looking forward to taking my baby apart, we've been together a long time
Re: Technics KN 2000 / Disk Change
The Rev F is fine for the KN2000. The lastest firmware too.harpingon wrote:Hello
Sorry to revive an old thread, but I have to revive my old KN2000
I thought I was 'getting away with it' for too long, but the FDD has given up the ghost.
I've used a USB floppy drive to rip fdd images of my floppy collection to disk files, so now I'm looking to replace the fdd in my KN2000 with a floppy emulator
Can anyone tell me which model of fdd emulator, and firmware I need so this will work? Also, any hardware modifications I might need to make to the keyboard and/or the emulator please?
Not looking forward to taking my baby apart, we've been together a long time
No hardware modification needed.
Re: Technics KN 2000 / Disk Change
Hello
I was hoping to get some help installing my HXC2001 Revision "F" to my KN 2000
I have made all connections according to lukas85 previous posts and put the hxc in shugart mode and used 720kb DD Layout.
When i load an image i can see the tracks but cant play them and formating virtual images doesnt work either.
Using firmware: v1.8.2.40
Cheers
I was hoping to get some help installing my HXC2001 Revision "F" to my KN 2000
I have made all connections according to lukas85 previous posts and put the hxc in shugart mode and used 720kb DD Layout.
When i load an image i can see the tracks but cant play them and formating virtual images doesnt work either.
Using firmware: v1.8.2.40
Cheers
Re: Technics KN 2000 / Disk Change
What do you mean by "i can see the tracks" ? This means that you can see the files with the KN2000?
Re: Technics KN 2000 / Disk Change
Hi Jeff
Yes i can see the files in the KN2000. But i get diffrent types of error messages when i try to load the files from the KN2000 for example: "the file your trying to load is empty", "this file was not made for this version"
But these same files were the ones we used for the original floppy until it broke.
I've tried floppy disk dump with the software but still no success.
Is there some settings or steps i'm missing?
Yes i can see the files in the KN2000. But i get diffrent types of error messages when i try to load the files from the KN2000 for example: "the file your trying to load is empty", "this file was not made for this version"
But these same files were the ones we used for the original floppy until it broke.
I've tried floppy disk dump with the software but still no success.
Is there some settings or steps i'm missing?
Re: Technics KN 2000 / Disk Change
did you see the track number on the hxc change during the file read attempt ?
Re: Technics KN 2000 / Disk Change
The track number seems to be jumping back and forth during file load attempts.
Perhaps the timing is off or something?
I could send you an image off the files i'm trying to load?
Perhaps the timing is off or something?
I could send you an image off the files i'm trying to load?