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Releases: mallardtheduck/osdev

Release 0.1A

15 Mar 10:59
@mallardtheduck mallardtheduck
0.1A
7ae9685
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Release 0.1A Pre-release
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  • Completely re-written memory manager
  • Shared library support; all major libraries now included as shared libraries
  • Vastly improved (now actually useful!) debugger
  • VESA VBE support using libx86emu (no V86 or switch-to-realmode required!)
  • ANSI terminal compatibility library based on libtmt
  • Port of ncurses using ANSI library
  • Port of "kilo" minimal text editor (also using ANSI)
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Release 0.1

25 May 10:47
@mallardtheduck mallardtheduck
0.1
0449e9e
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Release 0.1 Pre-release
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First "installable" release. Includes support for ATAPI devices, ISO9660 filesystem, ports of GNU GRUB and GNU Parted and a basic rough-and-ready install application. Has been tested on QEMU, Bochs, VirtualBox and VMWare as well as limited testing on real hardware.

System requirements:
An i686-class CPU, at least 8MB RAM (128MB recommended), ATAPI optical drive and ATA hard drive (~110MB space required for installation), VGA-compatible graphics and PS/2 compatible keyboard and mouse.

Installation instructions:

  1. Boot from provided "Live CD".
  2. Use GNU Parted (type: "parted") to create a "msdos" partition table with a FAT/FAT32 partition.
  3. Reboot.
  4. Run "install" to install the OS and bootloader to the hard drive.
  5. Reboot.

(Type "startwm" to start the GUI environment, if desired).

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Release 0.0C

30 Nov 13:28
@mallardtheduck mallardtheduck
0.0C
25f9139
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Release 0.0C Pre-release
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Another milestone. Includes "first draft" of the GUI, as well as many other features and improvements.

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Release 0.0B

23 Oct 08:47
@mallardtheduck mallardtheduck
0.0B
2f6289f
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Release 0.0B Pre-release
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Second milestone release.

Updates and new features:

  • Updated memory manager, with support for memory-mapped I/O.
  • Terminal driver, with support for multiple virtual terminals.
  • C library has full support for standard streams.
  • Command-line shell has many new commands, as well as I/O redirection and "faked" pipes.
  • "PATH" support (in shell).
  • A few external commands (cls, termctl, kill).
  • Fixes in FAT driver (multiple handles per file, directory removal).
  • ATA driver now has basic, 2MB block-level data cache.
  • Various improvements to scheduler and process handling code, several deadlocks resolved, crash bugs fixed, etc.
  • Stability improvements.
  • Scheduler now attempts to calibrate quantum to CPU speed.
  • Several new userspace API calls implemented (including userspace multi-threading).
  • Several additions to module API.
  • Many more bug fixes and miscellaneous improvements.
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Release 0.0A

24 Aug 21:37
@mallardtheduck mallardtheduck
0.0A
b12944e
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Release 0.0A Pre-release
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This is the first "release" of BT/OS. This represents the first "milestone" in development and includes the basic features that define it as an OS.

Features:

  • Scheduler and multithreaded kernel.
  • Paging memory manager.
  • VFS layer
  • Device driver system
  • Loadable modules that can implement devices or filesystems.
  • Basic userspace API (no threading yet)
  • INFOFS, DEVFS and INITFS "virtual" filesystems.
  • Support for following hardware devices:
    • PS/2 keyboard
    • ATA hard drive (PIO only)
    • Real-time clock (partial)
    • VGA 80x25 text mode
  • FAT16/32 filesystem support.
  • Userspace including command-line shell and support for C and C++ applications.
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