PDP-11 lamp test

Dennis Boone drb at msu.edu
Wed May 18 00:03:16 CDT 2005


Jay:

Try this:

	Location	Contents	Opcode		Comment
	001000		012700		mov #1,r0	Load 1 into R0
	001002		000001
	001004		006100		rol r0		Rotate R0 left
	001006		000005		reset		Initialise bus (70ms)
	001010		000775		br .-4		Loop back to 'rol r0'

from:

	http://www.psych.usyd.edu.au/pdp-11/11_40.html#chaser

Not sure if it works on all models.

De


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