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1 total messages Started by Mark Horton Mon, 11 Jul 1988 15:38

#2127

Author: Mark Horton
Date: Mon, 11 Jul 1988 15:38

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>From scubed!tcgould!transputer-request  Wed Jul  6 16:02:14 1988 remote from ames
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To: transputer@prg.oxford.ac.uk
Subject: Block move to/from single location
>From: denis <ames!scubed!gec-rl-hrc!denis>
Date: Tue,  5 Jul 88 13:48:00 GMT
Message-Id:  <8807051431.aa11371@lemon.gec-rl-hrc.co.uk>

Is it possible to use the T800 block move to transfer several
words/bytes to/from a single location (which is actually a peripheral
register) using a block move with a destination stride of 0? I want to
copy a block of 32' words from RAM to a 32' register in some external
hardware. Can I do a move2dinit, move2dall with the following
parameters?

	source address		= address of block in RAM
	destination address	= address of hardware register
	width in bytes of row	= 4
	number of rows		= number of words to write
	source stride		= 4
	destination stride	= 0

I would also like to be able to read the register several times and
store the results in a block in RAM. How can I do these things from
occam? The MOVE2D routine in the occam implementation manual seems to
use the strides of its argument arrays. Do I have to use GUY code
inserts?
========================================================================
Denis Howe                              uunet!mcvax!ukc!gec-rl-hrc!denis
G15  GEC Hirst Research Centre          denis@uk.co.gec-rl-hrc
East La. Wembley  MDDX  HA9 7PP  UK     +44 (1) 908 9220
=======================================================================

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