INTROL-C COMPILER REFERENCE MANUAL

mb - Reserve Memory Bytes
This directive, which is identical to the ds.b form of the ds
directive discussed previously, is defined as follows:
{} rmb {}
The rmb directive causes the location counter to be incremented an
amount specified by the expression in the operand field. This
reserves an area in memory whose length, in bytes, is equal to the
value of the operand expression. The memory area reserved by the rmb
directive is uninitialized by the directive. The expression cannot
contain external references, forward references, or undefined
symbols. The label and comment fields are optional.
xtable rmb 256 save 256 byte for xtable
rmb 20 save 20 bytes for the stack
stack
data rmb 1024*4 save 4K for data area
buffer.length equ 132
buffer rmb buffer.length reserve buffer space
set - Set Symbol To A Value
This directive has the form:
set {}
The set directive assigns the value of the expression to the label.
Function of the set directive is similar to that of equ except that
labels defined using set can have their values redefined in another
part of the program by using another set directive. The set
directive is useful for establishing temporary or re-usable counters
within macros.
syn - Equate Labels
This directive has the form.
syn
where is any previously defined symbol. This directive
makes the first symbol synonomous with the second symbol. The new
symbol has all the attributes of the original. Thus the user may
redefine opcodes, register names, labels, or any other symbol.
C.5.14