Saturday, July 12, 2014

Gotek Floppy Drive Emulator in Amiga 600

I read on various Amiga forums about a rival floppy drive emulator for the HxC floppy, called the Gotek floppy drive emulator. It is in reality a Cortex board, but flashed with the right firmware it can be used as a cheap Amiga floppy drive emulator on the Amiga 600 - I found a seller on Ebay selling a pre-flashed Gotek Amiga package with accessories and quickly bought it!

And here it is - Included with the Gotek package (as above) is the Gotek board mounted in a floppy drive sized plastic case (with controls, USB port and display mounted at one end), 8GB USB flash drive, engraved with the Amiga logo,  DVD with goodies, Instructions, USB flashing tool and cable for upgrading the Gotek firmware from a Windows PC and some jumpers and mounting screws.

It was very cheap compared to the HxC, only AUD$60. But keep in mind it does less too (more on that later).

Here is a closer look at the display end of the gotek floppy drive - you can see the 3 digit display, USB port, two black buttons and a green light:

Looking at the other end we can see the power connector and floppy drive cable connector:

The case is designed to be the same size as the floppy drive you are expected to remove to install this into your Amiga case.

It also has screw holes in the right places for the mounting points into the Amiga 600.

However, when I put the case on I found the first problem - you cannot see the display well, and the buttons are covered by the original case:

After looking online I noted that many people bought the longer floppy and power cables to mount outside, or simply cut the bottom part of the floppy drive section of the Amiga 600 case covering the ports and display so they could use it there - I don't want to do this and at this stage just wanted to try it out - so I put my original floppy drive back in, and connected the Gotek externally using the internal floppy and internal power cables as below:

I also removed the CF drive - reading the instructions the Gotek loads a SELECTOR.ADF from the USB stick, which you then program ADF files to the number slots selectable on the Gotek. Sounds fiddly, and hard to navigate when booting - to prevent HD damage from multiple resets I expect, I took it out first:

I then copied some ADF files to the 8GB USB drive supplied. It is important not to delete the SELECTOR.ADF file, as the Gotek uses this file when booting:

With the setup in place, I then connected everything and powered on - USB drive glows, the green light and the 3 digit display comes on:

Soon after I see the SELECTOR.ADF booted into it's menu screen:

It scans the USB drive and shows all the ADF's. In my case I put a bunch of Classic Amiga demos on it. Use the up and down arrow keys to select an ADF, then choose which SLOT number to assign it to:

The slot number assigned matches up to the 3 digit number displayed on the Gotek case. You can mount up to 999 ADF files with the Gotek.

Don't forget to select the Save and Restart option at the top when you have finished this task (otherwise it doesn't save the work you did!):

On reboot, use the two buttons on the gotek unit to select the Unit number that corresponds to the ADF file you want to boot. Having no Hard disk is good here because doing the going up SLOTS is tedious and slow unless the disk you want is within the first ten or so SLOTS:

Here is the Anarchy Digital Innovation demo ADF loaded via the Gotek Emulator - speed is the same as for the original floppy disk:

SLOT 2 selected and another reboot brings up the Andromeda Sequential demo from 1994:

Crusaders Micro Concept demo was a few more SLOTS along:

You can press down both buttons on the Gotek to quickly change the display to 000 to boot the SELECTOR.ADF again.

It does work well, but unfortunately it doesn't suit my needs really. I think this device is really intended to 100% replace an Amiga floppy drive on an unexpanded Amiga 500/600/1200.

The biggest problem for me is that although it is designed to mount into the floppy drive space on the Amiga, the external interfaces on it do not line up on the Amiga 600, requiring you to alter the case to make it fit - this was disappointing as I am not keen to do this. The attraction of the Gotek over the HxC is that I was hoping not to have to modify the case. Perhaps on an Amiga 500 it does line up better...

I should mention I have seen an external floppy drive mounting kit which I assume means the Gotek can be made to boot from the external drive if you run an Amiga with Workbench 3.0+ ROMS. This would avoid hacking up the original case. However, many games expect to be DF0 and will not work in this configuration, limiting it's usefulness.

The ACA630 accelerator in the Amiga 600 allows me to reconfigure the floppy drive assigns so that DF1 is actually DF0 in hardware, which bypasses this problem above!

The Gotek does not support IPF files, which means it cannot replace protected floppy disks (games, mostly). For me, this means it cannot be a true floppy drive replacement - you still need the floppy drive to boot protected floppies in your collection. For people without a large collection of original game floppy disks this would not be an issue - I bought most of my games so it is for me.

Perhaps this IPF support will come in time.

On the other side of the fence, the HxC floppy drive emulator supports ADF and IPF files amongst others, and has a nicer application to select files and mount them/reboot too - it also has a nice big display to show the active ADF to make switching ADF's easier without the selector application. However, installing it as a floppy drive replacement also involves modifying the Amiga case.

Going back to the Gotek - Changing SLOTS is fiddly and slow - the selector application requires you to take a photo of the screen showing what ADF you assigned to which SLOT as you have zero chance of remembering this later on when selected the SLOTS using the buttons - there is no other display.

This also means you are likely to need to modify the SLOT list often to keep the number of active ADF files low, so that you don't have to press the button so many times....this also means taking photos regularly when you change it..and don't forgot to Save before rebooting from the SELECTOR.ADF each time!

Multiple floppy disks being changed is also a little bit fiddly due to the digit display location, and important to assign the multiple disks to sequential SLOT numbers to avoid slowness switching disks.

I will gloss over the DVD filled with "all the ADF's and DMS files you will ever need" included with the package - do with this what you will. Not totally convinced the seller has a license to use the Amiga name and logo, or permission for the re-flashing of the Gotek for Amiga support either, but maybe the seller does - I'll give them the benefit of the doubt here.

It sounds like I am being a bit harsh on the Gotek, but in summary it is a workable solution for booting ADF files on a real Amiga, with some caveats. I am grateful to have the Gotek flashed with the Amiga floppy firmware with everything you need to plug it in and get started, and the price is certainly attractive.

I do prefer the HxC though, and I will show the HxC on another occasion (I have one of these too) as I work through my Amiga 600 upgrade work.

I first wanted to see what the Gotek was all about since I only found out about it recently. The price of the Gotek is initially attractive, but keep in mind the restrictions I mention above. If these are not an issue for you, then go for it!


  1. You paid 60$ ?

    The Gotek unit from Chinese sellers costs less then 30USD including shipping.
    The USB cable for flashing the FW costs another 2$.
    FW is free.

    1. $60 Australian dollars, not USD. It may have cost more than the price you mentioned but I didn't have to do anything to get it working at all and it came with everything needed - Amiga firmware loaded, plug and go. For me I am happy with what I paid for it. If you can get it even cheaper now then that is great - well done!