Added SDA.
Update DTA/PSP to use SDA. Added some more pic commands. Cleaned dos.cpp up a bit. Handled some more calls in dos.cpp. Changed execute and terminate to mess less with the dta. Removed all dta references and changes in PSP. Added some messages to messagefile for mount. Imported-from: https://svn.code.sf.net/p/dosbox/code-0/dosbox/trunk@1787
This commit is contained in:
Peter Veenstra
parent
afbc7f8828
commit
e3a7a48687
15 changed files with 271 additions and 180 deletions
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@ -16,7 +16,7 @@
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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/* $Id: dos_inc.h,v 1.41 2004-04-18 14:49:48 qbix79 Exp $ */
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/* $Id: dos_inc.h,v 1.42 2004-05-04 18:34:07 qbix79 Exp $ */
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#ifndef DOS_H_
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#define DOS_H_
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@ -45,27 +45,6 @@ struct DOS_Version {
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Bit8u major,minor,revision;
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};
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struct DOS_Block {
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DOS_Date date;
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DOS_Version version;
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Bit16u firstMCB;
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Bit16u errorcode;
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Bit16u psp;
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Bit16u env;
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RealPt cpmentry;
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RealPt dta;
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Bit8u return_code,return_mode;
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Bit8u current_drive;
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bool verify;
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bool breakcheck;
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bool echo; // if set to true dev_con::read will echo input
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struct {
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RealPt indosflag;
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RealPt mediaid;
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RealPt tempdta;
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} tables;
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};
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#ifdef _MSC_VER
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#pragma pack (1)
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@ -93,7 +72,7 @@ enum { RETURN_EXIT=0,RETURN_CTRLC=1,RETURN_ABORT=2,RETURN_TSR=3};
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#define DOS_DRIVES 26
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/* internal Dos Tables */
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extern DOS_Block dos;
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extern DOS_File * Files[DOS_FILES];
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extern DOS_Drive * Drives[DOS_DRIVES];
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extern Bit8u dos_copybuf[0x10000];
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@ -273,8 +252,6 @@ public:
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void RestoreVectors (void);
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void SetSize (Bit16u size) { sSave(sPSP,next_seg,size); };
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Bit16u GetSize (void) { return sGet(sPSP,next_seg); };
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void SetDTA (RealPt ptdta) { sSave(sPSP,dta,ptdta); };
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RealPt GetDTA (void) { return sGet(sPSP,dta); };
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void SetEnvironment (Bit16u envseg) { sSave(sPSP,environment,envseg); };
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Bit16u GetEnvironment (void) { return sGet(sPSP,environment); };
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Bit16u GetSegment (void) { return seg; };
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@ -312,8 +289,11 @@ private:
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Bit16u max_files; /* Maximum open files */
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RealPt file_table; /* Pointer to File Table PSP:0x18 */
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RealPt prev_psp; /* Pointer to previous PSP */
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RealPt dta; /* Pointer to current Process DTA */
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Bit8u fill_2[16]; /* Lot's of unused stuff i can't care aboue */
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Bit8u interim_flag;
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Bit8u truename_flag;
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Bit16u nn_flags;
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Bit16u dos_version;
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Bit8u fill_2[14]; /* Lot's of unused stuff i can't care aboue */
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Bit8u service[3]; /* INT 0x21 Service call int 0x21;retf; */
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Bit8u fill_3[9]; /* This has some blocks with FCB info */
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Bit8u fcb1[16]; /* first FCB */
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@ -520,10 +500,77 @@ private:
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#endif
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};
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extern DOS_InfoBlock dos_infoblock;;
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extern Bit16u sdaseg;
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#define DOS_SDA_SEG sdaseg
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#define DOS_SDA_OFS 0
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class DOS_SDA : public MemStruct {
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public:
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DOS_SDA(Bit16u _seg,Bit16u _offs) { SetPt(_seg,_offs); }
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void Init();
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void SetDrive(Bit8u _drive) { sSave(sSDA,current_drive, _drive); }
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void SetDTA(Bit32u _dta) { sSave(sSDA,current_dta, _dta); }
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void SetPSP(Bit16u _psp) { sSave(sSDA,current_psp, _psp); }
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Bit8u GetDrive(void) { return sGet(sSDA,current_drive); }
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Bit16u GetPSP(void) { return sGet(sSDA,current_psp); }
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Bit32u GetDTA(void) { return sGet(sSDA,current_dta); }
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private:
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#ifdef _MSC_VER
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#pragma pack (1)
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#endif
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struct sSDA {
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Bit8u crit_error_flag; /* 0x00 Critical Error Flag */
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Bit8u inDOS_flag; /* 0x01 InDOS flag (count of active INT 21 calls) */
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Bit8u drive_crit_error; /* 0x02 Drive on which current critical error occurred or FFh */
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Bit8u locus_of_last_error; /* 0x03 locus of last error */
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Bit16u extended_error_code; /* 0x04 extended error code of last error */
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Bit8u suggested_action; /* 0x06 suggested action for last error */
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Bit8u error_class; /* 0x07 class of last error*/
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Bit32u last_error_pointer; /* 0x08 ES:DI pointer for last error */
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Bit32u current_dta; /* 0x0C current DTA (Disk Transfer Address) */
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Bit16u current_psp; /* 0x10 current PSP */
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Bit16u sp_int_23; /* 0x12 stores SP across an INT 23 */
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Bit16u return_code; /* 0x14 return code from last process termination (zerod after reading with AH=4Dh) */
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Bit8u current_drive; /* 0x16 current drive */
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Bit8u extended_break_flag; /* 0x17 extended break flag */
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Bit8u fill[2]; /* 0x18 flag: code page switching || flag: copy of previous byte in case of INT 24 Abort*/
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} GCC_ATTRIBUTE(packed);
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#ifdef _MSC_VER
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#pragma pack()
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#endif
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};
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extern DOS_InfoBlock dos_infoblock;
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struct DOS_Block {
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DOS_Date date;
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DOS_Version version;
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Bit16u firstMCB;
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Bit16u errorcode;
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Bit16u psp(){return DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).GetPSP();};
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void psp(Bit16u _seg){ DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).SetPSP(_seg);};
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Bit16u env;
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RealPt cpmentry;
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RealPt dta(){return DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).GetDTA();};
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void dta(RealPt _dta){DOS_SDA(DOS_SDA_SEG,DOS_SDA_OFS).SetDTA(_dta);};
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Bit8u return_code,return_mode;
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Bit8u current_drive;
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bool verify;
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bool breakcheck;
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bool echo; // if set to true dev_con::read will echo input
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struct {
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RealPt mediaid;
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RealPt tempdta;
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} tables;
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};
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extern DOS_Block dos;
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INLINE Bit8u RealHandle(Bit16u handle) {
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DOS_PSP psp(dos.psp);
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DOS_PSP psp(dos.psp());
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return psp.GetFileHandle(handle);
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}
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