Input
Assembly Unit
-D<LabelName>[=<Value>]
<LabelName>: Name of label.
<Value>: Value for label. 0 if not present.
0 for Value.
This option behaves as if a Label: EQU Value is at the start of the main source file. When no explicit value is given, 0 is used as the default.
This option can be used to build different versions with one common source file.
Conditional inclusion of a copyright notice. See the following listings.
YearAsString: MACRO DC.B $30+(\1 /1000)%10 DC.B $30+(\1 / 100)%10 DC.B $30+(\1 / 10)%10 DC.B $30+(\1 / 1)%10 ENDM ifdef ADD_COPYRIGHT ORG $1000 DC.B "Copyright by " DC.B "John Doe" ifdef YEAR DC.B " 1999-" YearAsString YEAR endif DC.B 0 endif
When assembled with the option -dADD_COPYRIGHT -dYEAR=2005, the code in the following listing is generated:
1 1 YearAsString: MACRO 2 2 DC.B $30+(\1 /1000)%10 3 3 DC.B $30+(\1 / 100)%10 4 4 DC.B $30+(\1 / 10)%10 5 5 DC.B $30+(\1 / 1)%10 6 6 ENDM 7 7 8 8 0000 0001 ifdef ADD_COPYRIGHT 9 9 ORG $1000 10 10 a001000 436F 7079 DC.B "Copyright by " 001004 7269 6768 001008 7420 6279 00100C 20 11 11 a00100D 4A6F 686E DC.B "John Doe" 001011 2044 6F65 12 12 0000 0001 ifdef YEAR 13 13 a001015 2031 3939 DC.B " 1999-" 001019 392D 14 14 YearAsString YEAR 15 2m a00101B 32 + DC.B $30+(YEAR /1000)%10 16 3m a00101C 30 + DC.B $30+(YEAR / 100)%10 17 4m a00101D 30 + DC.B $30+(YEAR / 10)%10 18 5m a00101E 31 + DC.B $30+(YEAR / 1)%10 19 15 endif 20 16 a00101F 00 DC.B 0 21 17 endif