Newsgroup: comp.sys.ibm.pc.programmer

In article <3850@plains.UUCP> person@plains.UUCP (Brett G. Person) writes:
>
>How do I make Microsoft C read directly from video memory.  I need to 
>access the memory starting from b800.
>
>What does the c code that allows me to do this look like?

It looks like this:

/*
 * Read a byte from video memory starting at b800.
 * Location is the offset in the video RAM.
 */
char
readbyte(int location)
{
	return *(location + (char far *)(0xb8000000l));
}

Diomidis
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Diomidis Spinellis                  Internet:                 dds@cc.ic.ac.uk
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