Subject:
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understanding the opcode
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Newsgroups:
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lugnet.robotics
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Date:
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Wed, 3 Sep 2003 14:51:51 GMT
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Original-From:
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Pierre Spring <rcx@caillou*NoSpam*.ch>
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Viewed:
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788 times
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hi there,
i should write a scheme compiler for the RCX. so, first i am trying to
understand the opcode of the RCX. now there is one thing i really don't
get...
let's take the example of the 'Add to variable' function [1]. we have
the following args and the function does the following thing:
byte index
byte source
short argument
Add the value specified by source and argument to the value of variable
index, and store the result in variable index.
what i don't get is:
i.
how long is a short? my guess is 2 bytes.
ii.
what this value specified by source and argument is... what is this
argument???
i'd really be thankful if s.o. could help me out here.
yours
pierre spring
[1] http://graphics.stanford.edu/~kekoa/rcx/opcodes.html#add_to_variable
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Message has 1 Reply:
 | | RE: understanding the opcode
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| Pierre, Matt Jadud has done what you are trying to do on my pbForth firmware for the RCX. (URL) His weblog is here: (URL) You might try to contact him before you go too far down the road :-). The RCX native opcode execution may be too slow for any (...) (21 years ago, 3-Sep-03, to lugnet.robotics)
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