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From: richardh@hpopd.HP.COM (Richard Hancock)
Newsgroups: comp.lang.c
Subject: Re: Microsoft C far pointer dereferencing
Message-ID: <7990017@hpopd.HP.COM>
Date: 17 Aug 90 09:28:00 GMT
References: <9031@uhccux.uhcc.Hawaii.Edu>
Organization: HP PWD, Pinewood UK.
Lines: 15

/ hpopd:comp.lang.c / mfinegan@uceng.UC.EDU (michael k finegan) / 10:30 pm  Aug 16, 1990 /

>PutPixel (int x, int y, unsigned char c)
>{
>  unsigned char far *mem;

>  FP_SEG (mem) = 0xa000;
>  FP_OFF (mem) = 320 * y + x;

>  *mem = c;		/* <-- this line gives a run-time error */
>}

Why not use

  *((unsigned char far *)(0xA0000000L + 320*y + x)) = c;