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With the ProSystem'98 software you may attach up to 4 disk drives at once. Each drive must have a unique drive ID, but need not start at drive 1. Turn on the Atari disk drive(s) and insert the disk(s) you wish to image. If using more than one drive, insert ALL the disks you wish to image.
Oct 9, 2020 · I was under the impression that Atari 800 games came in three forms: Cart Files - ROM/COM/XEX/CART Disk Files - ATR/ATX Tape Files - CAS But then I stumbled upon some COM games that (according to AtariMania) were never released on cartridge: Air Support, Desmond's Dungeons, Encounter, Ghost Chase...
Sep 20, 1997 · The following is generally true in the PC world: - disks written on 360k drives can be read on either drive - blank disk formatted and written on 1.2M drives can be read on either kind - disks written on a 360k drive, and overwritten on a 1.2M drive, can be read reliably only on a 1.2M drive.
- Atari Dos 2.x – Single Density
- RI Dos 2.5 – 1050 Double (Enhanced) Density
- OS 4.5X
- Kboot Disk
- SpartaDOS
Boot Sectors
On start up the first three sectors are read and they contain information on how to boot the disk. For Atari Dos Disks sector 1 has the following special bytes (The remaining bytes are just the code to load DOS.SYS) :
Data Sectors
Each data sector holds up to 125 bytes of data and the remaining three bytes hold a link to the next sector, which file the sector belongs to and how many bytes of data in the sector. The number of bytes in the sector may be less than 125 if it is the last sector in the file or it was the last sector in the file before an append operation.
VTOC
This consists of 10 special purpose bytes and 90 bytes used to hold a sector bit map to track used sectors. 720 sectors / 8 bits per byte requires 90 bytes. The bytes in the VTOC are as follows:
Boot Sectors
There is no difference in the special boot bytes on a single density Atari Dos Disk and an Enhanced Density formated disk. On start up the first three sectors are read and they contain information on how to boot the disk. For Atari Dos Disks sector 1 has the following special bytes (The remaining bytes are just the code to load DOS.SYS) :
Data Sectors
Each data sector holds up to 125 bytes of data and the remaining three bytes hold a link to the next sector, which file the sector belongs to and how many bytes of data in the sector. The number of bytes in the sector may be less than 125 if it is the last sector in the file or it was the last sector in the file before an append operation.
VTOC
This consists of 10 special purpose bytes and 90 bytes used to hold a sector bit map to track used sectors for sectors 0 through 719 on the disk (for compability reasons with Dos 2.0) Sector 1024 is used to track the remaining sectors. The bytes in the VTOC are as follows:
Boot Sectors
There is no real important difference in the special boot bytes on a MyDos disk and an Atari Dos Disk. On start up the first three sectors are read and they contain information on how to boot the disk. For MyDos Disks sector 1 has the following special bytes (The remaining bytes are just the code to load DOS.SYS) :
Data Sectors
Each data sector holds up to 125(SD)/253(DD) bytes of data and the remaining three bytes hold a link to the next sector, and the number of bytes in the sector. For small images that are Atari Dos compatable, the file# is also stored within the last three bytes. Slashes seperate single density and true double density (256 bytes sector) values. A flag byte in the directory indicates if the file is Atari Dos compatable or not.
VTOC
The first vtoc sector consists of 10 special purpose bytes and 118 bytes used to hold a sector bit map to track used sectors for sectors 0 through 943(max) on the disk. Sectors 359 and down are used to store additional sectors. For sectors 359 or less, all 256 bytes in each sector may be used on double density disks and sectors are always allocated in pairs on single density disks (excluding the first sector which is for Atari Dos compatability). The bytes in the first VTOC sector are as foll...
KBoot disks are created with my AtrUtil win 95 utility or MakeAtr Dos utility. They contain a minimally sized ATR image that contains three boot sectors and the original file. Note: Only single density disks (128 byte sectors) are supported. This allows each executable to be stored in an ATR file to itself without wasting much space. No menu disks ...
Boot Sectors
On start up the first three sectors are read and they contain information on how to boot the disk. For SpartaDos Disks sector 1 has the following special bytes:
Data Sectors
The entire sector can be used for data unlike Atari Dos. There is no link information necessary like with Atari Dos. The link information is maintained in the sector map for the file.
Bitmap
This is a simple map of every sector on the disk. One bit is used per sector so 8 bytes are available per byte. There are as many bytes allocated for the bitmap is as necessary to track every sector on the disk.
Atari software as files or "images" containing the data from an entire disk, data cassette, or cartridge as duplicated from the native media for the Atari. Here is a list of file formats, arranged by their associated filename
All you need is a PC and a 5.25" and/or a 3.5" floppy drive. Version 0.92b added experimental support for the enhanced density (1040. sectors/128 bytes per sector) format. Please note: this format doesn't work. with a lot of floppy controllers - use it at your own risk! http://www.horus.com/~hias/atari/ MyUTIL. ====== - By Mark K Vallevand.
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Jan 20, 2024 · For loose binaries on Atari, there's never bin an official extension. So you will find them with ".COM", ".EXE", ".OBJ", ".BIN" and various made-up extensions. The internet has been trying to standardize on .XEX for these.
