1.2.1 Data Write Match Breakpoints
If the data in a GPR location is modified using any arithmetic
instruction like INCF
, ADDWF
,
SETF
, CLRF
, etc., the data write match
breakpoint does not work. It works with MOVF
, which moves the data
into the same memory location. See code examples below.
1.
MOVLB 0x00
CLRF 0x08
LOOP
INCF 0x08 ;Doesn’t break when data
breakpoint set @ 0x08
with data match for 0xAA
GOTO LOOP
2.
MOVLB 0x00
MOVLW 0xAA
MOVF 0x08 ;Breaks when data
breakpoint set @ 0x08
with data match for 0xAA
GOTO LOOP
Work around
Use data write breakpoints without matching wherever possible.
Affected Silicon Revisions
A3 | A4 | ||||||
X |