Download ZBOIBOB6 Cross Assembler

EXAMPLES OF OPERANOS
Legal:
-3+ 17H
SCOPE+4
[ bx + COUNT-2 ]
[SI+ARRAY+.BX-OFFSET]
;OFFSET must have already been defined
[01]
[ NEXT]
Illegal:
12+BX
;Register not allowed in VALUE
9C01
;Needs trailing IHI
[Count - BX]
[BX+BP]
;Can't subtract register
;Only one base register at a time
[ARRAY+BX+OFFSET]
COUNT-OIF
;Both labels are forward referenced (Note 1)
;OIF is forward referenced (Note 2)
Note 1. This problem could be corrected like this:
MOV
AX,[BX + ARRAYPLUSOFFSET]
ARRAY:
OFFSET:
ARRAYPLUSOFFSET: EQU
ARRAY + OFFSET
Note 2. This problem could be corrected like this:
MOV
AX, COUNT + MINUSOIF
OIF:
MINUSDIF:EQU
-OIF
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