Tuesday, May 5, 2020

PC to Amiga FDD interface cable

People are writing detailed articles how to modify stock 3.5" PC HD floppy drives to make them Amiga compatible.

My solution is completely different: create a special cable and no modification is required to the FDD itself.

The only thing You need to do is to hide the HD detection hole on the floppy disk with a sticky tape and all HD disks will work in DD mode. Of course DD disks will also work without any problem.

See the pictures below for the details. The testing involved 30+ different drives. 

Amiga supports DD drives only: don't ask for a HD mod; it requires oscillator change etc.




Friday, September 29, 2017

Dedicated website to my Amiga projects

Dear my friends, Amiga enthuasists!

I'm proud to present a dedicated website for our beloved machines and accessories. All further information, documents, drivers and news will be available there and not in this blog.

You can find the new website on the following address: irixlabs.com

Tuesday, September 26, 2017

SD Drive Z2

File transfer between the Amiga and PC is a painful question even in 2017. There are various solutions available:
  1. Floppy method - PC formatted 720 kB disk is required, if your PC has a floppy drive. It has small capacity and very slow (20kB /sec). How to transfer e.g. 50-100 MB of data?
  2. Ethernet card - The cheapest interface is 80-100 USD, if You can find it for sale. It requires a TCP stack, lots of RAM, an FTP client or SAMBA. In A1200 it is a working solution with a cheap PCMCIA card, however the Amiga -> Windows transfer is very slow (~100 kB/s) due to problem in SAMBA implementation. Amiga -> Linux and Windows -> Amiga transfer is working much faster.
  3. Removable HDD method - The system should be shut down in order to change the HDD / CF card.  
  4. PCMCIA CF adapter - It is a good solution, but limited to A1200 / A600 with PCMCIA slot.
For the big box Amigas we are proud to present the solution: the SD Drive!

SD Drive external card slot

SD Drive was born to solve all the listed data transfer problems above. No need for a clockport, no need for a SPI bus; SD Drive is a complete plug'n'play solution.

SD Drive is a Zorro 2 card, compatible with all Amiga models equipped with Zorro 2 or 3 bus, including the most popular A2000/A3000/A4000 machines, running AmigaOS 1.2 - 3.9.

SD Drive offers reliable file transfer using cheap SD / SDHC / MMC cards. The data transfer rate is 1.2 - 1.5 MB/sec, which is ideal for copying even large amount of data between your computers.

There is no limitation in card size: SD Drive can utilize any size cards. All cards which are >4 GB will be formatted to 4 GB.
SD Drive Zorro 2 card with a disassembled external card slot
The installation is very simple: Plug the autoconfig compatible card into a free slot, connect the cable to the external card reader and the hardware installation is complete. It takes no more than 5 minutes!

On the software side only 3 files are required: the device driver (DEVS: directory), the mountlist entry (SD0:, copy it into DEVS:DOSDrivers) and the filesystem. The FAT95 filesystem should be available in L: directory. That's all.

No need to run UAE on the PC side to access the files on the SD card written with the Amiga; SD Drive uses a native FAT16/32 filesystem, which is directly accessible by your Windows PC.

SD Drive supports dynamic card sizing  and hot swapping. No need to reboot the Amiga to mount a new SD card. It works exactly like a regular floppy disk, with much more capacity and incredible transfer rate!

Please note, this site is not a webshop. You can order various products from our resellers (Amedia Computer France etc.). For further information please send a private message.