text: #if !defined(_MODULE_H)
  #define _MODULE_H
  
  /* OS-9000 i386 module header definitions */
  #define _MPF386
  
  /* sizeof common header less parity field */
  #define N_M_PARITY  (sizeof(mh_com)-sizeof(unisgned short))
  #define OLD_M_PARITY 46
  #define M_PARITY N_M_PARITY
  
  #ifdef _MPF68K
  #define MODSYNC 0x4afd      /* module header sync code for 680x0 processors */
  #endif
  
  #ifdef _MPF386
  #define MODSYNC 0x4afc      /* module header sync code for 80386 processors */
  #endif
  
  #define MODREV	1			/* module format revision 1 */
  #define CRCCON	0x800fe3	/* crc polynomial constant */
  
  /* Module access permission values */
  #define MP_OWNER_READ	0x0001
  #define MP_OWNER_WRITE	0x0002
  #define MP_OWNER_EXEC	0x0004
  #define MP_GROUP_READ	0x0010
  #define MP_GROUP_WRITE	0x0020
  #define MP_GROUP_EXEC	0x0040
  #define MP_WORLD_READ	0x0100
  #define MP_WORLD_WRITE	0x0200
  #define MP_WORLD_EXEC	0x0400
  #define MP_WORLD_ACCESS	0x0777
  #define MP_OWNER_MASK	0x000f
  #define MP_GROUP_MASK	0x00f0
  #define MP_WORLD_MASK	0x0f00
  #define MP_SYSTM_MASK	0xf000
  
  /* Module Type/Language values */
  #define MT_ANY		0
  #define MT_PROGRAM	0x0001
  #define MT_SUBROUT	0x0002
  #define MT_MULTI	0x0003
  #define MT_DATA		0x0004
  #define MT_TRAPLIB	0x000b
  #define MT_SYSTEM	0x000c
  #define MT_FILEMAN	0x000d
  #define MT_DEVDRVR	0x000e 
  #define MT_DEVDESC	0x000f
  #define MT_MASK		0xff00
  
  #define ML_ANY		0
  #define ML_OBJECT	1
  #define ML_ICODE	2
  #define ML_PCODE	3
  #define ML_CCODE	4
  #define ML_CBLCODE	5
  #define ML_FRTNCODE	6
  #define ML_MASK		0x00ff
  
  #define mktypelang(type,lang)	(((type)<<8)|(lang))
  
  /* Module Attribute values */
  #define MA_REENT	0x80
  #define MA_GHOST	0x40
  #define MA_SUPER	0x20
  #define MA_MASK		0xff00
  #define MR_MASK		0x00ff
  
  #define mkattrevs(attr, revs)	(((attr)<<8)|(revs))
  
  #define m_user m_owner.grp_usr.usr
  #define m_group m_owner.grp_usr.grp
  #define m_group_user m_owner.group_user
  
  /* macro definitions for accessing module header fields */
  #define MODNAME(mod) ((u_char*)((u_char*)mod + ((Mh_com)mod)->m_name))
  #if 0
  /* Appears not to be used, and the u_int32 typedef is gone (because it
     conflicted with a Mach header.  */
  #define MODSIZE(mod) ((u_int32)((Mh_com)mod)->m_size)
  #endif /* 0 */
  #define MHCOM_BYTES_SIZE 80
  #define N_BADMAG(a) (((a).a_info) != MODSYNC)
  
  typedef struct mh_com {
    /* sync bytes ($4afc).  */
    unsigned char m_sync[2];
    unsigned char m_sysrev[2];		/* system revision check value */
    unsigned char
      m_size[4];			/* module size */
    unsigned char
      m_owner[4];		/* group/user id */
    unsigned char
      m_name[4];			/* offset to module name */
    unsigned char
      m_access[2],		/* access permissions */
      m_tylan[2],		/* type/lang */
      m_attrev[2],		/* rev/attr */
      m_edit[2];			/* edition */
    unsigned char
      m_needs[4],		/* module hardware requirements flags. (reserved) */
      m_usage[4],		/* comment string offset */
      m_symbol[4],		/* symbol table offset */
      m_exec[4],			/* offset to execution entry point */
      m_excpt[4],		/* offset to exception entry point */
      m_data[4],			/* data storage requirement */
      m_stack[4],		/* stack size */
      m_idata[4],		/* offset to initialized data */
      m_idref[4],		/* offset to data reference lists */
      m_init[4],			/* initialization routine offset */
      m_term[4];			/* termination routine offset */
    unsigned char
      m_ident[2];		/* ident code for ident program */
    char
      m_spare[8];	/* reserved bytes */
    unsigned char
      m_parity[2]; 		/* header parity */
  } mh_com,*Mh_com;
  
  /* Executable memory module */
  typedef mh_com *Mh_exec,mh_exec;
  
  /* Data memory module */
  typedef mh_com *Mh_data,mh_data;
  
  /* File manager memory module */
  typedef mh_com *Mh_fman,mh_fman;
  
  /* device driver module */
  typedef mh_com *Mh_drvr,mh_drvr;
  
  /* trap handler module */
  typedef	mh_com mh_trap, *Mh_trap;
  
  /* Device descriptor module */
  typedef	mh_com *Mh_dev,mh_dev;
  
  /* Configuration module */
  typedef mh_com *Mh_config, mh_config;
  
  #if 0 
  
  #if !defined(_MODDIR_H)
  /* go get _os_fmod (and others) */
  #include <moddir.h>
  #endif
  
  error_code _os_crc(void *, u_int32, int *);
  error_code _os_datmod(char *, u_int32, u_int16 *, u_int16 *, u_int32, void **, mh_data **);
  error_code _os_get_moddir(void *, u_int32 *);
  error_code _os_initdata(mh_com *, void *);
  error_code _os_link(char **, mh_com **, void **, u_int16 *, u_int16 *);
  error_code _os_linkm(mh_com *, void **, u_int16 *, u_int16 *);
  error_code _os_load(char *, mh_com **, void **, u_int32, u_int16 *, u_int16 *, u_int32);
  error_code _os_mkmodule(char *, u_int32, u_int16 *, u_int16 *, u_int32, void **, mh_com **, u_int32);
  error_code _os_modaddr(void *, mh_com **);
  error_code _os_setcrc(mh_com *);
  error_code _os_slink(u_int32, char *, void **, void **, mh_com **);
  error_code _os_slinkm(u_int32, mh_com *, void **, void **);
  error_code _os_unlink(mh_com *);
  error_code _os_unload(char *, u_int32);
  error_code _os_tlink(u_int32, char *, void **, mh_trap **, void *, u_int32);
  error_code _os_tlinkm(u_int32, mh_com *, void **, void *, u_int32);
  error_code _os_iodel(mh_com *);
  error_code _os_vmodul(mh_com *, mh_com *, u_int32);
  #endif /* 0 */
  
  #endif
  