Yamaha SY-85 with Gotek

[ctflop85]

Hello,

I'm trying to get a Gotek (7 seg display) to talk to my Yamaha SY-85, Using an adapter cable wired identically to this:

viewtopic.php?t=3528

It's worth noting that the SY-85 floppies may be written to/read by a DOS/Windows machine in 720k DD format. FWIW, the original drive (no longer working, even with a new belt) is a Matsushita (Panasonic) EME-213YV, with a 24 pin flex cable/connector and NOT a 26 pin cable as noted here: https://hxc2001.com/download/floppy_dri ... upport.htm

I'm unable to get any farther than getting a "Disk Unformatted" error on my Yamha SY-85 when I attempt to read from the emulator. As noted by others on this forum, the activity light on the drive is lit dimly - but it will go bright when the drive is active.

What I have done, using the standard firmware:

- Jumpers M0 and S0 are set.

- The buttons will step 000-003, corresponding to the .HFE files on the USB indicating that the Gotek seems to be reading the USB properly.

- If Menu 0 is set to 0 (0:0) (Auto) and menu 1 is set to 0 (1:0) (Auto) the unit will simply hang when trying to go into the Utilities menu to access the floppy and NOT show the "utilities" screen.

- If it is set to 0:0 (Auto) and Generic Shugart (1:8) with the USB inserted (in index mode) it will give the "Disk Unformatted" error: If I do not insert a USB disk, the unit usually give a "Disk Not Ready" indication - although it will occasionally just hang on the "utilities" screen (e.g. the "not ready" may not be being asserted.) This configuration seems to be the closes that I have find to "working" in that it doesn't hang, but it acts as though no read data is being output by the Gotek - or, perhaps, it is the wrong rate/format.

- I have tried the "non gated" version as suggested on an older forum post with the same results as above.

Additional:

- This same USB in the DosDiskBrowser shows the correct files, the "File System Type" being grayed out, but shows "3.5" 720KB DSDD FAT12.

- The "HXCSDFE.CFG file in the root directory of the USB is from the folder "Config_Files/Index_mode".

I have searched the forum for solutions, but have found nothing relevant - although there are a few tantalizing exchanges that end with "I'll send you some files to try" - but no further messages to see if it worked, or what was done.

Thanks in advance.

CT

[Jeff]

For sure you need the non-gated firmware build option enabled for this machine.
And you also need to enable the Shugart mode.

Have you a Gotek with an Artery uC ?

[ctflop85]

Thank you for the reply.

Yes, I have the Gotek with the Artrey proc.

CT

[Jeff]

- If Menu 0 is set to 0 (0:0) (Auto) and menu 1 is set to 0 (1:0) (Auto) the unit will simply hang when trying to go into the Utilities menu to access the floppy and NOT show the "utilities" screen.

What do you mean by "the unit" ? : Is it the Gotek or the Yamaha SY-85 ?

[norx]

@ctflop85 As I seem to have the same problem as you described above, I'd like to ask if you have been able to solve it and how?

[Jeff]

@ctflop85 As I seem to have the same problem as you described above, I'd like to ask if you have been able to solve it and how?

Which emulator have you ? What is printed on the drive screen ?

[norx]

Hi @Jeff

I guess I have learned a bit in the meantime (I'm a absolute beginner when it comes to floppy emulators).

I have a SFR1M44-U100K with the ootb firmware (pressing both buttons shows 242 and F0 - firmware version and model if I correclty understood). I learned the ootb firmware is not able to simulate a 720kb floppy, which is what the SY-85 is expecting. Which also explains the issues I have - the SY-85 detects the drive and even claims it's able to format a disk and able to save data but the moment i want to read it or check the status of the disk it returns "unformatted disk".

So I got to change the firmware. I'm just about to learn about this. If I correctly understood, HxC is proving a commercial firmware and FlashFloppy an open source version? I read both HxC and FlashFloppy support Artery AT32F415CBT7, HxC might be more stable.

[norx]

Just to mention I solved the issue by changing the firmware. I decided to go with flashfloppy.
You can find a write up here in case you are planning you use a Gotek drive as replacement for the floppy drive on a SY-85: https://yamahamusicians.com/forum/viewt ... 30#p138730

[Jeff]

Just to mention I solved the issue by changing the firmware. I decided to go with flashfloppy.
You can find a write up here in case you are planning you use a Gotek drive as replacement for the floppy drive on a SY-85: https://yamahamusicians.com/forum/viewt ... 30#p138730

Good news !
But i think you didn't choose the best firmware for this use case.

The HxC firmware is better : You can skip the floppy images steps completely and directly mount partitions to add/get files to/from your SY-85.
No need to use any software, just insert the usb stick and copy/past your user files.

See "Floppy Emulation from USB stick partitions"

For the SY-85, you can use the gpt_usb_stick_16_720K.zip file to prepare your usb stick.

The good news is that since you have installed a firmware with a bootloader, you can now install the HxC Firmware with an usb stick. No need to open your machine/sy-85 again ! :

See bootloader-installation : stick-method

And second good news : The HxC firmware is free for individuals since some years now
https://hxc2001.com/store/getlic.html