DOS ain't dead

Virtual x86 - Javascript x86 emulator - source released! (Announce)

posted by Arjay, 07.11.2013, 17:19
(edited by Arjay on 07.11.2013, 17:38)

> does it also support pmode? I tried to run some DJGPP program, CWSDPMI can
> be preloaded but then I always get
> Unimplemented: load system segment descriptor, type = 9
> Execution stopped

I have swapped a few emails with copy and my understanding is he still needs to implement some of the 16bit features required by DOS extenders. He's kindly added support for smaller disk formats, e.g. 160k. However I've noted myself that SeaBIOS fails to boot some disks that lack the 55AAh signature as was common in the days of the XT. It would be good if SeaBIOS had a new setting to ignore bootsector signature checking as it was only implemented in the AT.

[EDIT]Looks like such a feature exists in SeaBIOS and appears to be called "no-fd-bootchk" - discussion here: http://lists.gnu.org/archive/html/qemu-devel/2013-07/msg01193.html

However not much in the way in terms of documentation that I can see beyond that discussion. http://www.seabios.org/ simply refers to http://www.coreboot.org/SeaBIOS for documentation. I note that under http://www.coreboot.org/SeaBIOS#Adding_a_floppy_image it says the following:
"Both uncompressed and LZMA compressed images are supported. Several floppy formats are available: 360K, 1.2MB, 720K, 1.44MB, 2.88MB, 160K, 180K, 320K.[/EDIT]

Complete thread:

• Virtual x86 - Javascript x86 emulator with FreeDOS/graphics - Arjay, 02.11.2013, 01:07 (Announce)
  • Virtual x86 - Javascript x86 emulator with FreeDOS/graphics - Arjay, 02.11.2013, 01:43
  • Fake86js = Javascript port of Mike Chamber's Fake86+DOS - Arjay, 02.11.2013, 06:40
  • Virtual x86 - Javascript x86 emulator with FreeDOS+HXDOS - Arjay, 02.11.2013, 08:04
  • Virtual x86 - Javascript x86 emulator - source released! - Arjay, 07.11.2013, 00:06
    • Virtual x86 - Javascript x86 emulator - source released! - RayeR, 07.11.2013, 14:53
      • Virtual x86 - Javascript x86 emulator - source released! - Arjay, 07.11.2013, 17:19
        • Virtual x86 - Javascript x86 emu no-fd-bootchk now enabled - Arjay, 07.11.2013, 22:49
          • Shelta v1.2 online in FreeDOS in v86 - Rugxulo, 29.12.2013, 04:35
            • 22nd IOCCC winners - Rugxulo, 10.01.2014, 00:18
              • 22nd IOCCC winners - RayeR, 12.01.2014, 02:30
                • 22nd IOCCC winners - Rugxulo, 24.01.2014, 13:58
                  • 22nd IOCCC winners - RayeR, 25.01.2014, 01:28
                    • 22nd IOCCC winners - RayeR, 25.01.2014, 15:30
                      • 22nd IOCCC winners - RayeR, 25.01.2014, 18:00
                        • 22nd IOCCC winners - roytam, 26.01.2014, 14:53
                          • 22nd IOCCC winners - RayeR, 26.01.2014, 16:37
                          • 22nd IOCCC winners - roytam, 27.01.2014, 00:06
                            • 22nd IOCCC winners - Rugxulo, 23.02.2014, 01:01
                    • 22nd IOCCC winners - Rugxulo, 27.01.2014, 23:24
                      • 22nd IOCCC winners - roytam, 28.01.2014, 04:00
                        • 22nd IOCCC winners - RayeR, 29.01.2014, 04:43
                          • 22nd IOCCC winners - roytam, 29.01.2014, 23:42