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Path: utzoo!mnetor!seismo!rutgers!ames!hc!hi!josh
From: josh@hi.UUCP (Josh Siegel)
Newsgroups: comp.unix.questions
Subject: Re: Microport shmcreate
Message-ID: <6370@hi.UUCP>
Date: Sun, 10-May-87 16:05:11 EDT
Article-I.D.: hi.6370
Posted: Sun May 10 16:05:11 1987
Date-Received: Mon, 11-May-87 02:59:57 EDT
References: <93@upas.UUCP>
Reply-To: josh@hi.UUCP (Josh Siegel)
Distribution: world
Organization: U. of New Mexico, Albuquerque
Lines: 39
Keywords: shmcreate

In article <93@upas.UUCP> rcw@upas.UUCP (Robert White) writes:
>
>This line == can of raid.
>
>	Greetings. I have a problem with the shmcreate facility of
>Microport Unix 2.2 when attempting to use shared memory to access
>the Hercules bit mapped graphics memory. The documentation says to
>put the following line in /etc/rc:
>
>	/etc/shmcreate 0xb0000 b0000 32768  /* create a segment whose key is
>					    b0000, mapped to physical address
>					    b0000, with length 32768 bytes. */
>
>
>	In the user program, the following code should give me access
>to the  shared memory through char * pointer shmaddr:
>
>	extern char *shmat();
>
>	shmid = shmget (0xb8000,32768,0);   /* shmid is an int, large model */
>
>	shmaddr = shmat (shmid, (char *) 0); /* shmaddr is a large model pntr */
>
>

All together now...

	If ya going to include examples... make sure the examples
	are bug free!

Your making a key of b0000 and asking for a key of b8000.

Is this a typo?

			--Josh Siegel
-- 
Josh Siegel		(siegel@hc.dspo.gov)
	It's a 9mm hand gun... useful for killing people... 
		If you're into that sorta thing...