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-.TH REDCODE 6 5/20/84
-.CM 3
-.SH NAME
-redcode \- assembler for mars game
-.SH SYNOPSIS
-.I redcode
-.I file ...
-.SH DESCRIPTION
-.I Redcode
-is an assembler for the
-assembly language given by Kee Dewdney in the
-`Computer Recreations',
-.I Scientific American,
-May, 1984.
-The command line lists of source file names ending in
-.LR .red .
-They are assembled into corresponding
-object files with names ending in
-.LR .obj .
-.PP
-A source file consists of a
-.L name
-directive giving the program's name,
-then any number of program and data statements,
-then an
-.L end
-directive that gives the starting location of the program.
-Statements have the following syntax:
-.IP
-[label] opcode arg1 [arg2] [; comment]
-.PP
-There are three addressing modes;
-all address calculations are done modulo 8000.
-.LP
-.nf
-.I
-Syntax Meaning
-#[0-9]+ immediate
-[0-9]+ relative
-@[0-9]+ indirect, relative
-.PP
-The following opcodes are implemented, along with the corresponding
-semantics specified in pseudo-C:
-.PP
-.nf
-.I
-Instruction Mnem Opcode Args Explanation
-Move mov 1 A B B=A
-Add add 2 A B B+=A
-Subtract sub 3 A B B-=A
-Jump jmp 4 A PC=A
-Jump if zero jmz 5 A B PC=(B==0)?A:PC+1
-Jump if greater jmg 6 A B PC=(B<4000)?A:PC+1
-Dec, Jmp if 0 djz 7 A B PC=(--B==0)?A:PC+1
-Compare cmp 8 A B PC=(A==B)?PC+1:PC+2
-.PP
-The following non-executable directives may be used
-to reserve and initialize data space:
-.PP
-.I
-Directive Mnem Arg Explanation
-Buffer space bss n Reserve n words
-Data data A Initialize 1 word
-Name name 't' Name of program
-End end start Specify starting location
-.PP
-The program was written by Paul Milazzo at Rice.
-For documentation on the object code format, see
-.IR mars (6).
-.SH EXAMPLES
-.EX
- name 'dwarf'
-site data -1 ; address of last 0 'bomb'
-start add #5 site ; move site forward
- mov #0 @site ; write 0 'bomb'
- jmp start ; loop
- end start
-.EE
-.SH SEE ALSO
-.IR mars (6)