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sysmem.prg
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1991-08-17
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78 lines
/*
* File......: SYSMEM.PRG
* Author....: Glenn Scott
* CIS ID....: 71620,1521
* Date......: $Date: 17 Aug 1991 15:46:10 $
* Revision..: $Revision: 1.4 $
* Log file..: $Logfile: E:/nanfor/src/sysmem.prv $
*
* This is an original work by Glenn Scott and is placed in the
* public domain.
*
* Modification history:
* ---------------------
*
* $Log: E:/nanfor/src/sysmem.prv $
*
* Rev 1.4 17 Aug 1991 15:46:10 GLENN
* Don Caton fixed some spelling errors in the doc
*
* Rev 1.3 15 Aug 1991 23:04:40 GLENN
* Forest Belt proofread/edited/cleaned up doc
*
* Rev 1.2 14 Jun 1991 19:53:04 GLENN
* Minor edit to file header
*
* Rev 1.1 12 Jun 1991 02:41:50 GLENN
* Documentation mod and check for ft_int86() compatibility
*
* Rev 1.0 01 Apr 1991 01:02:20 GLENN
* Nanforum Toolkit
*
*/
/* $DOC$
* $FUNCNAME$
* FT_SYSMEM()
* $CATEGORY$
* DOS/BIOS
* $ONELINER$
* Determine the amount of conventional memory installed
* $SYNTAX$
* FT_SYSMEM() -> nMemSize
* $ARGUMENTS$
* None
* $RETURNS$
* A numeric corresponding to the number of K memory.
* $DESCRIPTION$
* FT_SYSMEM() simply reports the amount of conventional memory
* (up to 640K) installed.
*
* FT_SYSMEM() uses DOS interrupt 12h to get this information.
* For information, refer to Peter Norton's _Programmer's Guide
* to the IBM PC_ (Brady).
*
* $EXAMPLES$
* QOut( "Conventional memory installed: " + Str( FT_SYSMEM() ) + "K" )
* $END$
*/
#include "FTINT86.CH"
#define MEMSIZE 18
#ifdef FT_TEST
FUNCTION MAIN()
QOut( "Conventional memory: " + str( FT_SYSMEM() ) + "K installed" )
return ( nil )
#endif
FUNCTION FT_SYSMEM()
LOCAL aRegs[ INT86_MAX_REGS ]
aRegs[ AX ] := 0
FT_INT86( MEMSIZE, aRegs )
RETURN ( aRegs[ AX ] )