To LUGNET HomepageTo LUGNET News HomepageTo LUGNET Guide Homepage
 Help on Searching
 
Post new message to lugnet.roboticsOpen lugnet.robotics in your NNTP NewsreaderTo LUGNET News Traffic PageSign In (Members)
 Robotics / 1672
  Pattern in RCX opcodes.
 
Did anyone notice that the last hex digit of the RCX opcodes uniquely (well almost) identifies number of bytes that the opcode takes as arguments? 0,6 -> void 1,7 -> 1 byte 2 -> 2 bytes. 3 -> 3 bytes. 4 -> 4 bytes. 5 -> 5 bytes I think the only (...) (26 years ago, 20-Dec-98, to lugnet.robotics)
 
  Re: Pattern in RCX opcodes.
 
(...) This is certainly used by the ROM. I believe Paul Haas was the first to notice this, see the comment on my web page, (URL) notes Paul Haas was right about messages being grouped and parsed by lower 3 bits And lower, in the RXI handler: receive (...) (26 years ago, 20-Dec-98, to lugnet.robotics)

©2005 LUGNET. All rights reserved. - hosted by steinbruch.info GbR