Xref: utzoo comp.arch:10608 comp.misc:6535
Path: utzoo!attcan!utgpu!jarvis.csri.toronto.edu!rutgers!cs.utexas.edu!uunet!cs.dal.ca!iotek!garyb
From: garyb@iotek.UUCP (Gary Burrell)
Newsgroups: comp.arch,comp.misc
Subject: Re: TRON (a little long)
Message-ID: <336@venus.iotek.UUCP>
Date: 12 Jul 89 11:07:23 GMT
References: <32424@apple.Apple.COM> <226@arnor.UUCP> <33015@apple.Apple.COM> <29418@ism780c.isc.com>
Reply-To: garyb@iotek.UUCP (Gary R. Burrell)
Organization: IOTEK Inc
Lines: 45

In article <29418@ism780c.isc.com> marv@ism780.UUCP (Marvin Rubenstein) writes:
>
>As an implementor of an assembler and a C compiler for the machine I can make
>some comments.  The assembler recoginizes 442 opcode names.  But the actual
>number of machine instructions is greater than this.  For an opcode name like
>'mov' the assembler selects from one of 7 different machine instructions
>depending on the operands.  Allen Baum is correct about instruction
>complexity.  But his 160 bit estimate was conservative.  Here is an example
>of a single instruction.  The number of bits in the instruction is 416.  And
>there are instructions that are even longer than this one.
>
>     mov @(@(@(@(a,r1),b,r2),c,r3),d,r4), @(@(@(@(a,r1),b,r2),c,r3),d,r4)
>
>       D20B 4412 0003 0D40
>       4812 0004 93E0 4C12
>       0006 1A80 9012 0000
>       C350 8A0B 4412 0003
>       0D40 4812 0004 93E0
>       4C12 0006 1A80 9012
>       0000 C350
>
>The block of hex digits is the object form of the assembly source line.
>This form of 'mov' does a memory to memory move.  The address is computed
>as follows:

Can you say "GAG" Boys and Girls !

Sure you can it's easy!!!


>
>     Marv Rubinstein


  			Gary Burrell

			<<<<<<******>>>>>>
Gary R. Burrell, Iotek Inc,     |*| E-Mail: garyb@iotek.uucp	|*| 
1127 Barrington St., Suite 100, |*| Fax:    (902)420-0674	|*|   
Halifax, N.S., B3H 2P8, Canada  |*| Phone:  (902)420-1890	|*| 

Damm it Jim 
  I'm a Doctor not a Computer Scientist!
              
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