92 lines
5.8 KiB
C
92 lines
5.8 KiB
C
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/****************************************************************/
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/* */
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/* lol.h */
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/* */
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/* DOS List of Lists structure */
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/* */
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/* Copyright (c) 2003 */
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/* Bart Oldeman */
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/* All Rights Reserved */
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/* */
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/* This file is part of DOS-C. */
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/* */
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/* DOS-C is free software; you can redistribute it and/or */
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/* modify it under the terms of the GNU General Public License */
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/* as published by the Free Software Foundation; either version */
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/* 2, or (at your option) any later version. */
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/* */
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/* DOS-C is distributed in the hope that it will be useful, but */
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/* WITHOUT ANY WARRANTY; without even the implied warranty of */
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/* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See */
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/* the GNU General Public License for more details. */
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/* */
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/* You should have received a copy of the GNU General Public */
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/* License along with DOS-C; if not, write to the Free Software */
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/* Foundation, Inc., 59 Temple Place, Suite 330, */
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/* Boston, MA 02111-1307 USA. */
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/****************************************************************/
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enum {LOC_CONV=0, LOC_HMA=1};
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/* note: we start at DOSDS:0, but the "official" list of lists starts a
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little later at DOSDS:26 (this is what is returned by int21/ah=52) */
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struct lol {
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char filler[0x22];
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char *inputptr; /* -4 Pointer to unread CON input */
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unsigned short first_mcb; /* -2 Start of user memory */
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struct dpb far *DPBp; /* 0 First drive Parameter Block */
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struct sfttbl far *sfthead; /* 4 System File Table head */
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struct dhdr far *clock; /* 8 CLOCK$ device */
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struct dhdr far *syscon; /* c console device */
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unsigned short maxsecsize; /* 10 max bytes per sector for any blkdev */
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void far *inforecptr; /* 12 pointer to disk buffer info record */
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struct cds far *CDSp; /* 16 Current Directory Structure */
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struct sfttbl far *FCBp; /* 1a FCB table pointer */
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unsigned short nprotfcb; /* 1e number of protected fcbs */
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unsigned char nblkdev; /* 20 number of block devices */
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unsigned char lastdrive; /* 21 value of last drive */
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struct dhdr nul_dev; /* 22 NUL device driver header(no pointer!)*/
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unsigned char njoined; /* 34 number of joined devices */
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unsigned short specialptr; /* 35 pointer to list of spec. prog(unused)*/
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void far *setverPtr; /* 37 pointer to SETVER list */
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void (*a20ptr)(void); /* 3b pointer to fix A20 ctrl */
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unsigned short recentpsp; /* 3d PSP of most recently exec'ed prog */
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unsigned short nbuffers; /* 3f Number of buffers */
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unsigned short nlookahead; /* 41 Number of lookahead buffers */
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unsigned char BootDrive; /* 43 bootdrive (1=A:) */
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unsigned char cpu; /* 44 CPU family [was unused dword moves] */
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unsigned short xmssize; /* 45 extended memory size in KB */
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struct buffer far *firstbuf; /* 47 head of buffers linked list */
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unsigned short dirtybuf; /* 4b number of dirty buffers */
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struct buffer far *lookahead;/* 4d pointer to lookahead buffer */
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unsigned short slookahead; /* 51 number of lookahead sectors */
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unsigned char bufloc; /* 53 BUFFERS loc (1=HMA) */
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char far *deblock_buf; /* 54 pointer to workspace buffer */
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char filler2[5]; /* 58 ???/unused */
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unsigned char int24fail; /* 5d int24 fail while making i/o stat call*/
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unsigned char memstrat; /* 5e memory allocation strat during exec */
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unsigned char a20count; /* 5f nr. of int21 calls for which a20 off */
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unsigned char VgaSet; /* 60 bitflags switches=/w, int21/4b05 */
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unsigned short unpack; /* 61 offset of unpack code start */
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unsigned char uppermem_link; /* 63 UMB Link flag */
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unsigned short min_pars; /* 64 minimum para req by program execed */
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unsigned short uppermem_root;/* 66 Start of umb chain (usually 9fff) */
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unsigned short last_para; /* 68 para: start scanning during memalloc */
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/* ANY ITEM BELOW THIS POINT MAY CHANGE */
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/* FreeDOS specific entries */
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unsigned char os_setver_minor;/*6a settable minor DOS version */
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unsigned char os_setver_major;/*6b settable major DOS version */
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unsigned char os_minor; /* 6c minor DOS version */
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unsigned char os_major; /* 6d major DOS version */
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unsigned char rev_number; /* 6e DOS revision#, only 3 bits */
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unsigned char version_flags; /* 6f DOS version flags */
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char *os_release; /* 70 near pointer to os_release string */
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#ifdef WIN31SUPPORT
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unsigned short winInstanced; /* WinInit called */
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unsigned long winStartupInfo[4];
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unsigned short instanceTable[5];
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#endif
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};
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