Solution for running Linux under DOSBox

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See it in action

It is used in these Youtube videos:

README

   Linux for DOSBox
   Version 1.1
   Copyright (C) 2016 Joel Yliluoma -- http://iki.fi/bisqwit/
   License: zlib
   Portions of the code come straight from the Linux kernel.
   ---------------------------------------------------------
   LINUX.EXE is a stand-alone 16-bit realmode program for MS-DOS,
   which implements a FAST 4-tty Linux-compatible terminal emulator.
   It will emulate a 80x50 256-color terminal
   with xterm's 256-color extension.
   A status line is also displayed on the screen, which is accomplished
   by reprogramming the VGA text mode for 80x51 dimensions.
   
   Compile with Borland C++ 3.1. You need TASM, too.
   The packaged version of LINUX.EXE is compressed using UPX.
   Due to the compression, it will have a slight startup delay
   while it decompresses itself to RAM.
   To run, you need a version of MS-DOS (such as DOSBox) that has
   a special patch in it that implements the following callback
   routine:
         INT 21
          OPEN A NEW TERMINAL
              in:
               AX = 5300
               CX = rows
               DX = columns
              out:
               BX = fd
               CX = pid
          CLOSE TERMINAL
              in:
               AX = 5301
               BX = fd
               CX = pid
          WRITE STRING (NON-BLOCKING)
              in:
               AX = 5302
               BX = fd
               DS:DX = string address
               CX = string length
              out:
               CX = number of bytes written
          READ STRING (NON-BLOCKING)
              in:
               AX = 5303
               BX = fd
               DS:DX = target address
               CX = buffer capacity
              out:
               CX = number of bytes read
               DX = error code (or zero if CX != 0xFFFF)
          SEND A RESIZE EVENT
              in:
               AX = 5304
               BX = fd
               CX = rows
               DX = columns
An example of such an implementation is added to DOSBox 0.74 by the following patch.

http://bisqwit.iki.fi/src/patch-dosbox-forkpty.txt

Do be careful when applying this patch. It opens a security hole to your system, allowing any DOS program to issue arbitrary commands in your host system with the privileges of the account that you use to run DOSBox. A


Last edited at: 2016-01-27T06:32:09+02:00