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CONSTANTS:

               Constants are specific numbers entered into
               assembly language instructions.
               The default base for all constants in the assembler is hexadecimal.
               Either a prefix or a suffix is used, not both.  

                       Base	Prefix	Suffix
                       02	%	Q
                       10	!	T
                       16	$	H 
 
                        Ex : 10010111Q = %10010111 = 97H = $97

                Additionally, a character $ or  *  by itself is used to mean
                "the current program counter".

                      JMP $	; jump to itself
                      JMP *	; jump to itself



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The following list of pseudo operations (assembler driectives) are allowed
in place of opcodes:


DS n  or  RMB n

Define Storage, n = number or label, reserves n bytes.
Forward references of n are not allowed.

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DB m  or  FCB m

Define Byte storage, m = label, number or string.
Strings generate ASCII codes for multiple bytes.
Numbers and labels define only a single byte per parameter.
Multiple parameters are allowed and are separated by commas.

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DW n  or  FDB n

Define Word storage, n=label, number or string.
Two bytes are generated for each number or label.
Multiple parameters are allowed and are separated by commas.

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label:  EQU n

Assigns the value of the number or label n to the label lab.
Forward references to n are not allowed.

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ORG n

Sets the ORiGin to the value of the number or label n.
All assembler lines after this statement will be placed in memory at n.
Forward references to n are not allowed.

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Example:


VAR	DS 1		;Allocate 1 byte of memory for variable VAR
	DB 1,2,3,4,5	;Set up constant array in memory
	DW 'vector'	;Place constant word 'vector' in memory



LBL1:	EQU $100		;Set label LBL1 to value $100
	ORG $800		;Assemble code from address $800



	An ASCII constant may be specified by placing a character in single or double quotes 	(i.e. 'A' which is the same as 41H).  Strings consist of a series of characters enclosed 	in quotes, such as :

STR	db 'this is a string'