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14 commits

Author SHA1 Message Date
Aleksandar Andrejevic 08dc1d3e16 [NTVDM] 
Make the BIOS Data Area accessible to other parts of ntvdm.
Properly redirect read/write access to the console to the keyboard and VGA systems, respectively.


svn path=/branches/ntvdm/; revision=59741
 2013-08-15 01:40:50 +00:00
Aleksandar Andrejevic 5921c465db [NTVDM] 
Keep a list of current directories for all drives.
Implement functions that change the default drive and current directory.


svn path=/branches/ntvdm/; revision=59700
 2013-08-11 20:54:07 +00:00
Hermès Bélusca-Maïto 6a2534345c Fix formatting, no code changes. 
svn path=/branches/ntvdm/; revision=59682
 2013-08-09 18:55:35 +00:00
Aleksandar Andrejevic b4ed87bb3a [NTVDM] 
Fix coding style.
Fix initial cursor position bug.
Fix memory limit constant for VGA memory modes 0 and 1 (64 KB not 32 KB).


svn path=/branches/ntvdm/; revision=59669
 2013-08-07 19:56:28 +00:00
Aleksandar Andrejevic 455deb3bde [NTVDM] 
Implement Video Graphics Array (VGA) support.
Replace the old BIOS video code with new code that uses the VGA.


svn path=/branches/ntvdm/; revision=59648
 2013-08-05 23:20:25 +00:00
Aleksandar Andrejevic b49476f20c [NTVDM] 
Modify the flags on the stack instead of the flags register directly.
The flags register is restored during IRET so changing it directly does nothing.


svn path=/branches/ntvdm/; revision=59566
 2013-07-23 21:43:57 +00:00
Aleksandar Andrejevic 7bcfe7b2a8 [NTVDM] 
Implement several INT 21h functions.


svn path=/branches/ntvdm/; revision=59563
 2013-07-23 14:43:03 +00:00
Aleksandar Andrejevic f603441db9 [NTVDM] 
Implement multiple allocation strategies.


svn path=/branches/ntvdm/; revision=59530
 2013-07-20 06:14:13 +00:00
Aleksandar Andrejevic bac747f151 [NTVDM] 
Fix several bugs.


svn path=/branches/ntvdm/; revision=59502
 2013-07-18 12:31:11 +00:00
Aleksandar Andrejevic 495320af6e [NTVDM] 
Implement Upper Memory Blocks (UMB) support.


svn path=/branches/ntvdm/; revision=59501
 2013-07-18 11:44:06 +00:00
Aleksandar Andrejevic 36f251eca0 [NTVDM] 
Fix several bugs:
The file was not entirely read due to an integer overflow.
The second WORD of the Program Segment Prefix (PSP) is not the number of allocated
paragraphs, but the segment of the last paragraph.
Fix the order of registers (SI and DI were mixed up with SP and BP).
Implement interrupt 0x11.
Implement redirection for reading/writing characters.


svn path=/branches/ntvdm/; revision=59409
 2013-07-02 02:08:30 +00:00
Aleksandar Andrejevic 40e7d3a9fb [NTVDM] 
Implement file creation, opening, reading and writing.


svn path=/branches/ntvdm/; revision=59406
 2013-07-01 02:29:29 +00:00
Aleksandar Andrejevic 944d6e8b5a [NTVDM] 
Implement "Get DOS Version" API call.
Implement BIOS keyboard IRQ handler and some "INT 16h" functions.


svn path=/branches/ntvdm/; revision=59350
 2013-06-28 20:52:40 +00:00
Aleksandar Andrejevic 4c4c69fc37 [NTVDM] 
Clean up the code and properly separate different modules into different files.


svn path=/branches/ntvdm/; revision=59344
 2013-06-26 22:58:41 +00:00