74 lines
5.6 KiB
Plaintext
74 lines
5.6 KiB
Plaintext
/*
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* File......: SYSMEM.PRG
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* Author....: Glenn Scott
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* CIS ID....: 71620,1521
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*
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* This is an original work by Glenn Scott and is placed in the
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* public domain.
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*
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* Modification history:
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* ---------------------
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*
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* Rev 1.4 17 Aug 1991 15:46:10 GLENN
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* Don Caton fixed some spelling errors in the doc
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*
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* Rev 1.3 15 Aug 1991 23:04:40 GLENN
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* Forest Belt proofread/edited/cleaned up doc
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*
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* Rev 1.2 14 Jun 1991 19:53:04 GLENN
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* Minor edit to file header
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*
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* Rev 1.1 12 Jun 1991 02:41:50 GLENN
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* Documentation mod and check for ft_int86() compatibility
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*
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* Rev 1.0 01 Apr 1991 01:02:20 GLENN
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* Nanforum Toolkit
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*
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*/
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/* $DOC$
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* $FUNCNAME$
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* FT_SYSMEM()
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* $CATEGORY$
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* DOS/BIOS
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* $ONELINER$
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* Determine the amount of conventional memory installed
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* $SYNTAX$
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* FT_SYSMEM() -> nMemSize
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* $ARGUMENTS$
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* None
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* $RETURNS$
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* A numeric corresponding to the number of K memory.
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* $DESCRIPTION$
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* FT_SYSMEM() simply reports the amount of conventional memory
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* (up to 640K) installed.
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*
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* FT_SYSMEM() uses DOS interrupt 12h to get this information.
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* For information, refer to Peter Norton's _Programmer's Guide
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* to the IBM PC_ (Brady).
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*
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* $EXAMPLES$
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* QOut( "Conventional memory installed: " + Str( FT_SYSMEM() ) + "K" )
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* $END$
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*/
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#include "ftint86.ch"
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#define MEMSIZE 18
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#ifdef FT_TEST
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FUNCTION MAIN()
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QOut( "Conventional memory: " + str( FT_SYSMEM() ) + "K installed" )
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return ( nil )
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#endif
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FUNCTION FT_SYSMEM()
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LOCAL aRegs[ INT86_MAX_REGS ]
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aRegs[ AX ] := 0
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FT_INT86( MEMSIZE, aRegs )
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RETURN ( aRegs[ AX ] )
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