8235 External FDD slot + Gotek Floppy drive?

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By Colonel James Burton

Supporter (3)

Colonel James Burton's picture

02-12-2019, 22:19

I connected a gotek/flashfloppy drive to my vg8235/20 external drive port with a straight 34pin cable. I did only put a jumper on S1, and then the 8235 will see that drive as double sided drive. Works perfect:-) I found also some old code from NYYRIKKI which he had a routine that would to patch #4010 routine in Disk-ROM. Haven't come so far yet to test it, because it needs to be compiled and that is something I haven't done before.

By Meits

Scribe (5647)

Meits's picture

02-12-2019, 22:21

For the complete picture: your 8235 is still unmodded? single sided original diskdrive/rom?

By Colonel James Burton

Supporter (3)

Colonel James Burton's picture

02-12-2019, 22:32

Yes, the 8235 is still unmodded, if only replaced the floppy drive belt once. So I hope that patch will work so I do not have to change the rom.

By CyberMaid

Rookie (25)

CyberMaid's picture

03-12-2019, 10:42

Colonel James Burton wrote:

I connected a gotek/flashfloppy drive to my vg8235/20 external drive port with a straight 34pin cable. I did only put a jumper on S1, and then the 8235 will see that drive as double sided drive. Works perfect:-) I found also some old code from NYYRIKKI which he had a routine that would to patch #4010 routine in Disk-ROM. Haven't come so far yet to test it, because it needs to be compiled and that is something I haven't done before.

Thats exactly what I needed to know Smile awesome! Gonna give it a try soon!
How did you power the drive tho?

By Colonel James Burton

Supporter (3)

Colonel James Burton's picture

04-12-2019, 19:51

I just used an old PC power supply. Google which pins you need to connect to start the PSU.

By Meits

Scribe (5647)

Meits's picture

04-12-2019, 22:07

You can "steal" a power lead from an ATX PSU and solder it into the 8235 and lead it outside near the ext fdd connector. There's 5V, 12V and GND available there.
If you don't know where to find the right voltages, someone might be able point you there. I'd take 'em from the same place as where the internal FDD gets it from, but maybe there are better points near the PSU.
At least I would not get an external PSU for an FDD(emulator). There's enough power inside the computer.

By CASDuino

Expert (104)

CASDuino's picture

05-12-2019, 12:42

You only need 5v for Gotek. you could easily rig a USB cable to do the job.

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