•Entries from the EXTABLE may be used. As the EXTABLE does not have the label names limitations with operators, in ambiguous case (DUP+#5 may either be an addition DUP + 5, or an entry ‘DUP+#5’), add "" around the word: "DUP"+#5.
•Calculations are done with 64 bits.
•X divide by 0 = $FFFFFFFFFFFFFFFF.
•In order to avoid wasting memory, MASD tries to compile expressions as soon as it sees them. If MASD is not able to compile an expression directly, it’s compiled at the end of the compilation. In order to use less memory, it’s a good idea to define your constants at the beginning of the sources so MASD can compile expression using the constants directly.
•The only operator symbols not allowed in labels are +,
•A label/constant with strange char may be ‘protected’ between " chars.
•The evaluation stack of MASD allows you to have around 10 pending computations (parenthesis, operator priority).
•MASD only works with integers. You can represent signed values using standard 2’s complement, but be careful as all operators are unsigned.
MASD recognizes the following operators:
Operator | Priority | Notes |
<< | 7 | Left Shift 1<<5 = $20 |
>> | 7 | Right shift $20>>5 = 1 |
% | 6 | Modulo (remainder of division) X%0=0 |
* | 5 | Multiplication |
/ | 5 | Division X/0=$FFFFFFFFFFFFFFFF |
+ | 4 | Addition |
- | 4 | Subtraction |
< | 3 | Is smaller (true=1, false = 0) |
> | 3 | Is greater (true=1, false = 0) |
<=, ‰ | 3 | Is smaller or equal (true=1, false = 0) |
>=, Š | 3 | Is greater or equal (true=1, false = 0) |
= | 3 | Is equal (true = 1, false = 0) |
#, ‹ | 3 | Is different (true = 1, false = 0) |
& | 2 | Logical and |
! | 1 | Logical or |
^ | 1 | Logical xor |
Note: Throughout this documentation, you will see discussions about expressions that can be “immediately” evaluated. This refers to any expression that contains only number and labels/constants that have already been declared.
Macros and includes
If data are to be included in a project, it can be entered in hex in a source file, using $. However, a simpler way is to include data from an external file, called a macro. The macro file must be a character string, a graphic, a code object or a list.
-In case of a string or a code, MASD includes only the data part (after the length) of the object
-In case of a graphic, only the graphic data will be included (no length, no dimensions)