Jump to content

Search the Community

Showing results for tags 'ROS'.

More search options

  • Search By Tags

    Type tags separated by commas.
  • Search By Author

Content Type


  • Atari Systems
    • Atari 2600
    • Atari 5200
    • Atari 7800
    • Atari Lynx
    • Atari Jaguar
    • Dedicated Systems
    • Atari 8-Bit Computers
    • Atari ST/TT/Falcon Computers
  • Gaming General
    • Classic Gaming General
    • Classic Computing
    • Modern Gaming
    • Prototypes
    • Arcade and Pinball
    • Emulation
    • Hardware
    • Gaming Publications and Websites
    • International
  • Marketplace
  • Community
  • Game Programming
  • Site
  • Classic Gaming News
  • The Club of Clubs's Discussion
  • I Hate Sauron's Topics
  • 1088 XEL/XLD Owners and Builders's Topics
  • Atari BBS Gurus's Community Chat
  • Atari BBS Gurus's BBS Callers
  • Atari BBS Gurus's BBS SysOps
  • Atari BBS Gurus's Resources
  • Atari Lynx Programmer Club's CC65
  • Atari Lynx Programmer Club's ASM
  • Atari Lynx Programmer Club's Lynx Programming
  • Atari Lynx Programmer Club's Music/Sound
  • Atari Lynx Programmer Club's Graphics
  • The Official AtariAge Shitpost Club's Shitty meme repository
  • The Official AtariAge Shitpost Club's Read this before you enter too deep
  • Arcade Gaming's Discussion
  • Tesla's Vehicles
  • Tesla's Solar
  • Tesla's PowerWall
  • Tesla's General
  • Harmony/Melody's CDFJ
  • Harmony/Melody's DPC+
  • Harmony/Melody's BUS
  • Harmony/Melody's General
  • ZeroPage Homebrew's Discussion
  • Furry Club's Chat/RP
  • PSPMinis.com's General PSP Minis Discussion and Questions
  • PSPMinis.com's Reviews
  • Atari Lynx 30th Birthday's 30th Birthday Programming Competition Games
  • 3D Printing Club's Chat
  • Drivers' Club's Members' Vehicles
  • Drivers' Club's Drives & Events
  • Drivers' Club's Wrenching
  • Drivers' Club's Found in the Wild
  • Drivers' Club's General Discussion
  • Dirtarians's General Discussion
  • Dirtarians's Members' Rigs
  • Dirtarians's Trail Runs & Reports
  • Dirtarians's Wrenching
  • The Green Herb's Discussions


There are no results to display.

There are no results to display.


  • AtariAge Calendar
  • The Club of Clubs's Events
  • Atari BBS Gurus's Calendar
  • ZeroPage Homebrew's Schedule

Find results in...

Find results that contain...

Date Created

  • Start


Last Updated

  • Start


Filter by number of...


  • Start










Custom Status



Currently Playing

Playing Next

Found 1 result

  1. Instead of cluttering up another thread here's one for RAMDisk related info. Last night I was experiencing file corruption when saving Extended BASIC files to my Horizon RAMdisk. The filename was getting copied into the file I was saving, trashing code at seemingly random spots. As I was putting together an email to Gazoo, it dawned on me that I had removed my Myarc floppy controller from the system. Without the FDC, the VDP memory pointer at 0x8370 was not modified, because there was no need for any floppy buffers. Well... ROS uses the 0x8370 pointer to determine where to copy its last used filename and corresponding drive number into VDP memory. ( I believe this is primarily for boot tracking purposes but may also be for convenience). Without a floppy controller in the system, we had extra VDP RAM up to 0x3fff available for system use. ROS was dumping the filename directly into VDP where my program was located! The "corruption" is not limited to XB since the ROS routine is executed for all file IO. Had I not been testing file transfers between systems, requiring me to inspect the files for changes, I might have missed out on finding this dependency. Therefore, for anyone out there using a RAMdisk, it is good practice to keep a floppy controller in the system I do not know if the Myarc hard/floppy controller sets VDP similar to the floppy controllers, that is a test for another day.
  • Create New...