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Pre-Processor
RETFIE
SLEEP
IORLW
MOVLW
s
-
k
k
RETLW
ADDLW
LFSR
MULLW
k RETURN s
k ANDLW k
f,k MOVLB k
k RETLW k
SUBLW
TBLRD
TBLWT
k
*+
*
XORLW
TBLRD
TBLWT
k TBLRD
*- TBLRD
*+ TBLWT
*
+*
*-
TBLWT
+*
The compiler will set the access bit depending on the value of the file register.
If there is just a variable identifier in the #asm block then the
compiler inserts an & before it. And if it is an expression it must be
a valid C expression that evaluates to a constant (no & here). In C
an un-subscripted array name is a pointer and a constant (no need
for &).
#BIT
Syntax:
Elements:
Purpose:
#BIT id = x . y
id is a valid C identifier,
x is a constant or a C variable,
y is a constant 0-7
A new C variable (one bit) is created and is placed in memory at byte x and bit
y. This is useful to gain access in C directly to a bit in the processors special
function register map. It may also be used to easily access a bit of a standard C
variable.
Examples: #bit T0IF = 0x b.2
...
T1IF = 0; // Clear Timer 0 interrupt flag
int result;
#bit result_odd = result.0
...
if (result_odd)
Example
Files:
Also See:
ex_glint.c
#BYTE, #RESERVE, #LOCATE, #WORD
83
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