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Lower case strings in macro arguments

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profkelly

Joined: 16 Dec 2004
Posts: 596
Location: Monroe County Community College, Monroe Michigan, U.S.A.

Posted: Thu Mar 19, 2009 8:34 am   Post subject: Lower case strings in macro arguments

When passing a string as a macro argument enclose the text inside single quotes and it will retain the case.

Code:

*-----------------------------------------------------------
* Written by : Chuck Kelly
* Description : Demo of macros
* Macro definitions should be placed at the top of the source file.
*-----------------------------------------------------------
   OPT MEX
CODE EQU 0
TEXT EQU 1

SECTION TEXT
ORG    $2000
SECTION CODE
ORG    $1000

* print the text string
* use ENDL as second argument to add return and linefeed
PRINT MACRO
SECTION TEXT
MSG\@ DC.B \1
IFARG 2
   IFC '\2','ENDL'
   DC.B $D,$A
   ENDC
ENDC
DC.B 0
SECTION CODE
MOVEM.L D0/A1,-(SP)
LEA    MSG\@,A1
MOVE.B #14,D0
TRAP #15
MOVEM.L (SP)+,D0/A1
ENDM

HALT MACRO
MOVE.B #9,D0
TRAP #15
ENDM

**********************
* Program Start
**********************
START
PRINT <'Macro Demonstration Program'>,ENDL

HALT       Halt the program
END START

_________________
Prof Chuck Kelly

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