Atari800macx free#

Atari800macx free#

Now you can use DIR to see the contents, which should be empty, and see the number of free sectors which will be slightly less than the 720. Then use W rite Directory to “format” the disk. This should show a sector count of 720 and 128 BPS (bytes per sector), with a total of 92,160 bytes. When creating the image in Atari800MacX, you can use the standard single density option, or choose Custom and set the sector count to 720 and sector size to 128 bytes.Īfterward using SpartaDOS X Format utility, select the drive number, set the density to “SINGLE”, tracks to 40 SS (single sided). I’ll be referencing the Atari800MacX create new disk image utility, accessible from the Media menu: In this post, I’m describing the required format specifications to achieve a fully compatible ATR image that is sized at 720K, as well as 360K, 180K, and 90K. I also found a 360K format I was using that was also incompatible outside the emulator. Over the years I found that the specific sector size and configuration is problematic for some utilities that manipulate/use ATR’s (outside of the emulator). In a previous post here ( ) I posted about creating a 720K ATR disk image with SpartaDOS on it. 720K was a size never achieved with stock hardware throughout Atari’s existence. By comparison, a double sided single density 3.5″ floppy is 720K. It’s still actively maintained today!Ītari started out at 90K disks (single sided single density 5.25″ floppy). It also supports sub directories and timestamps. It received updates to allow hard drive access and boasted one of the best memory footprints, which is critical for these old 48K to 128K machines. It was released on disk and eventually on cartridge too. SpartaDOS is great MS-DOS like DOS (Disk Operating System) for the Atari 8 bit line of computers.