joncampbell123/dosbox-x
1
0
Fork 0
mirror of https://github.com/joncampbell123/dosbox-x.git synced 2025-05-08 19:32:39 +08:00
Code Issues Packages Projects Releases Wiki Activity

move fixed global constants defining segments into dos.cpp and make them

Browse Source 
variables. We're going to allow for dynamic mapping later.
This commit is contained in:
Jonathan Campbell 2014-01-18 16:56:36 -08:00
parent 1754a6caf5
commit fa43e4b203
2 changed files with 28 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
include/dos_inc.h
View File

@ -108,6 +108,7 @@ extern Bitu DOS_FILES;
#define DOS_DEVICES 10
#if 0 /* ORIGINAL DEFINES FOR REFERENCE */
// dos swappable area is 0x320 bytes beyond the sysvars table
// device driver chain is inside sysvars
#define DOS_INFOBLOCK_SEG 0x80 // sysvars (list of lists)
@ -122,6 +123,21 @@ extern Bitu DOS_FILES;
#define DOS_PRIVATE_SEGMENT 0xc800
#define DOS_PRIVATE_SEGMENT_END 0xd000
#endif
// dos swappable area is 0x320 bytes beyond the sysvars table
// device driver chain is inside sysvars
extern Bit16u DOS_INFOBLOCK_SEG;// 0x80 // sysvars (list of lists)
extern Bit16u DOS_CONDRV_SEG;// 0xa0
extern Bit16u DOS_CONSTRING_SEG;// 0xa8
extern Bit16u DOS_SDA_SEG;// 0xb2 // dos swappable area
extern Bit16u DOS_SDA_OFS;// 0
extern Bit16u DOS_CDS_SEG;// 0x108
extern Bit16u DOS_FIRST_SHELL;// 0x118
extern Bit16u DOS_MEM_START;// 0x158 // regression to r3437 fixes nascar 2 colors
extern Bit16u DOS_PRIVATE_SEGMENT;// 0xc800
extern Bit16u DOS_PRIVATE_SEGMENT_END;// 0xd000
/* internal Dos Tables */

12
src/dos/dos.cpp
View File

@ -32,6 +32,18 @@
#include "serialport.h"
#include "dos_network.h"
Bit16u DOS_INFOBLOCK_SEG=0x80; // sysvars (list of lists)
Bit16u DOS_CONDRV_SEG=0xa0;
Bit16u DOS_CONSTRING_SEG=0xa8;
Bit16u DOS_SDA_SEG=0xb2; // dos swappable area
Bit16u DOS_SDA_OFS=0;
Bit16u DOS_CDS_SEG=0x108;
Bit16u DOS_FIRST_SHELL=0x118;
Bit16u DOS_MEM_START=0x158; // regression to r3437 fixes nascar 2 colors
Bit16u DOS_PRIVATE_SEGMENT=0xc800;
Bit16u DOS_PRIVATE_SEGMENT_END=0xd000;
DOS_Block dos;
DOS_InfoBlock dos_infoblock;