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 Robotics / NXT / NXT Firmware Hacking / 98
97  |  99
Subject: 
Re: The standard NXT firmware & the case of the missing opcodes
Newsgroups: 
lugnet.robotics.nxt.nxthacking
Date: 
Thu, 30 Aug 2007 16:55:47 GMT
Viewed: 
17198 times
  
In lugnet.robotics.nxt.nxthacking, John Hansen wrote:
In lugnet.robotics.nxt.nxthacking, Jason J Railton wrote:
In lugnet.robotics.nxt.nxthacking, Jason J Railton wrote:

//Family: Bit manipulation
#define OP_CMNT     0x0A  // dest, src
#define OP_LSL      0x0B  // dest, src
#define OP_LSR      0x0C  // dest, src
#define OP_ASL      0x0D  // dest, src
#define OP_ASR      0x0E  // dest, src
#define OP_ROTL     0x0F  // dest, src
#define OP_ROTR     0x10  // dest, src

I don't think I ever got around to mentioning this here, but a long time ago I
implemented all of the above opcodes in my NBC/NXC enhanced standard NXT
firmware. I implemented all of the shift opcodes so that they take 3 parameters
rather than just two as shown in the comments above.


Could you, please, confirm, that the latest version of NBC then translates the
following two commands with three arguments listed in the NBC manual:

  shr
  shl

to the correct new opcodes of the enhanced firmware (depending on the type of
the operands), if one provides the -EF compiler switch, and to other but still
equivalent code without the switch?

Or did you introduce some new instructions for these new opcodes, please?



Message is in Reply To:
  Re: The standard NXT firmware & the case of the missing opcodes
 
(...) I don't think I ever got around to mentioning this here, but a long time ago I implemented all of the above opcodes in my NBC/NXC enhanced standard NXT firmware. I implemented all of the shift opcodes so that they take 3 parameters rather than (...) (17 years ago, 22-Aug-07, to lugnet.robotics.nxt.nxthacking)

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