Replace floppy drive by Gotek in Turbo-R

Enlighted (4298)

27-01-2023, 20:12

jepmsx wrote:

Thanks gdx for the explanation about the case.

Oh, I see that pin-34 in the PC is for DiskChange and Ready and these are split in Turbo-R. So in place of a Gotek for generic PC, I should look for a Gotek for Amiga. Is that so?

Gotek with FlashFloppy installed can work in both PC mode as well as Shugart (MSX, Amiga) mode.

Por jepmsx

Champion (281)

28-01-2023, 05:53

Thnaks Jipe for the link, it is a nice modification. A good strategy to avoid modifying the case. The board that it uses (translated as "FDD conversion board V2.01 for electronic musical instruments (EME-213**)" by Google) must be the same as the one Wierzbowsky suggested, mustn't it?

And thanks sdsnatcher73 for the clarification. Now I see that I only need to look for Goteks with the FlashFloppy version/driver.

Por sjoerd

Hero (611)

06-02-2023, 15:08

Since the end of the drive belt of my Turbo R drive, a Gotek look like a good idea. I do have some questions though.

Is an adapter like the one Wierzbowsky linked to enough to connect a gotek? Or are more modifications needed? I don't really like soldering irons.

Does a Gotek with FlashFloppy just work? Or are there specific jumper settings? Or is an ff.cfg file enough? And what should be in that file? is 'host = msx' enough?

Por sjoerd

Hero (611)

12-02-2023, 13:56

So I went ahead and bought an adapter from the link and a Gotek.

And it almost works. Problem is I only get 'disk offline' messages.

Does anyone know how to make this work?

Por Wierzbowsky

Guardian (3648)

12-02-2023, 16:49

sjoerd wrote:

So I went ahead and bought an adapter from the link and a Gotek.
And it almost works. Problem is I only get 'disk offline' messages.
Does anyone know how to make this work?

Try to use either "jc" or "shugart" in FF.CFG in the "interface" variable. Also, check what are the values of "pin02" and "pin34" variables. Make sure that DS0 jumper is installed and no other jumpers are set.

Por sjoerd

Hero (611)

13-02-2023, 11:44

Thanks!
I tried interface = jc and interface = shugart, host = msx and host = MSX, pin02 and pin34 were on auto, but I also tried pin02 = chg and pin34 = rdy. With the the jumper on DS0. Nothing worked.
I tried a ff.cfg file from a 'msx starter kit' somewhere on the internet, but also tried an ff.cfg with just interface, host and pin02 and pin34 lines.
Funny enough without any jumper or jumper on DS1, the green disk access light on the Gotek lights up with the disk access light on the front of the Turbo R.
The only time the lcd display shows a disk access is when i choose another image with the up and down keys on the Gotek.

Maybe the adapter was made for a specific disk drive that's not a Gotek?

Por Wierzbowsky

Guardian (3648)

13-02-2023, 21:57

Hmmm, I checked the pics on Ebay and the adapter could have been indeed made for a PC drive that doesn't have DS0/DS1 selection. So the adapter may require DS1 jumper (and not DS0) to work as primary drive. Please try to play around with configuration settings and the DS1 jumper set on your Gotek.

Por jepmsx

Champion (281)

21-02-2023, 11:29

Hi sjoerd!

Have you been able to find the right combination of settings and DS1 jumper?

Por sjoerd

Hero (611)

22-02-2023, 15:14

No, I don't think just changing some settings on the Gotek is going to make this work.

On https://hansotten.file-hunter.com/do-it-yourself/msx-floppy-... I found this scheme:

Signal    24 pin ZIF             34 pin FDD

+5V                1             Power Connector
RDY                6             34
GND                7             Power Connector
Side Select        9             32
Read Data         11             30
Write Protect     12             28
Track 00          13             26
Write Gate        14             24
Write Data        16             22
Step              18             20
Direction Select  19             18
Motor On          20             16
Drive Select 0    22             10
Index             23             08
Disk Change       24             02

The adapter I bought seems to do almost the same with the following exceptions:

RDY                6              6
Drive Select 0    22             12
Disk Change       24             34

So I guess connecting pin 6 from the ZIF to pin 2 on the 34 pin FDD will increase the chance of this ever going to work.

Is it true this is all I have the change, and the drive select does not matter as long as I choose interface = ibmpc?

Por sjoerd

Hero (611)

25-02-2023, 17:21

It indeed works after connecting pin 6 from the ZIF to pin 2 on the 34 pin FDD, which is pretty easy to do. Of course it would be easier if there were an adapter with the right connections.

FF.CFG:

interface = ibmpc
host = MSX
pin02 = rdy
pin34 = chg

I just put it in, and I can't remember the jumper settings already.