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Path: utzoo!linus!philabs!prls!amdimage!amdcad!decwrl!decvax!tektronix!reed!omen!caf
From: caf@omen.UUCP (Chuck Forsberg WA7KGX)
Newsgroups: net.micro
Subject: Re: Assembler Level Commands (long)
Message-ID: <210@omen.UUCP>
Date: Sat, 3-Aug-85 13:34:03 EDT
Article-I.D.: omen.210
Posted: Sat Aug  3 13:34:03 1985
Date-Received: Tue, 6-Aug-85 05:42:34 EDT
References: <881@rayssd.UUCP> <30700024@waltz>
Reply-To: caf@.UUCP (Chuck Forsberg WA7KGX)
Organization: Omen Technology, Portland
Lines: 14

Don't forget
	HCF	9D
on the 6800.  This is an actual instruction that caused the chip to read
sequentially through the entire 64k address space forever.  No interrupts,
no NMI, only a hardware reset would bring it out of its reverie.

I have been told this was put there on purpose as a way of checking the
address bits.  I've even used it myself, but utually its just another form
of crash.
-- 
  Chuck Forsberg WA7KGX   ...!tektronix!reed!omen!caf   CIS:70715,131
Omen Technology Inc     17505-V NW Sauvie Island Road Portland OR 97231
Voice: 503-621-3406     Modem: 503-621-3746 (Hit CR's for speed detect)
Home of Professional-YAM, the most powerful COMM program for the IBM PC