In this post i’m going to show you how to make it technical posible to have 2 drives (Gotek & disk drive) inside a Amiga 500, 600 or 1200.
The internal FDD header (CN11) does not have all the needed signals to add 2 drives to this header, it’s imposible to have a DF0 & DF1 at the same time on the internal header. _MTRX & _RESET are missing. But! What can be done with a simple trick is to switch between the 2 drives, both will be seen as DF0 which makes it easy to ready ADF images from gotek and normal floppy disks. With this trick you can even use X-Copy to read a ADF image from a Gotek drive and write it back to a real disk.
In this post I uses a Amiga 600.
NOTE: Simon Vergauwen pointed me out a micronik adaptor which could provide 2 drives on DF0 & DF1 for internal usage.
If I have that info, I will add it to this post.
To achive this you need a long floppydisk cable, and alter this cable like this.
Pin 10 of the internal floppy connector (CN11) holds the _SEL0 signal, which is used to control DF0. To use two drives you need to switch this signal to one of both drives.
I used a long cable like this, and added 2 extra connectors to it:
Then I freed the wire from pin 10 on both sides of the middle connector:
I soldered a 3 wired cable to the wires, and added some heat shrink tubes to protect the wires from shorting:
I added a switch to that cable:
Now the basics are ready. Now connect the middle connector to the board (CN11), and the other two connectors to the drives.
For the power I used some spare (left overs) power connectors and soldered them together like this:
Does it work?
Time to put everything together
Because I’m going to use a Gotek and a readl floppy drive, I altered the case to add the gotek to the left side of the Amiga 600.
Result / testing
In the following video I show:
- Load X-Copy from a real disk
- Set both source and target to DF0
- Set Gotek (FlashFloppy) to my Amiga Test Kit ADF image
- Switch to Gotek drive
- Read disk image with X-Copy
- After the reading is done, switch to real floppy drive
- Write Amiga Test Kit to the real disk
- Load Amiga Test Kit from the real disk
And it works like a charm!