In SX Microcontrollers, SX/B Compiler and SX-Key Tool, bernoulli wrote:

Personally with the SX48, I have had difficulty getting the PIN assignment commands to work and ended up using an initialize routine to set the port settings.  An example from one of my programs is below.  Maybe doing a similar thing for your program will resolve the issue.

[code]
ASM
  MODE $09                ; WKPND_B
  MOV !RB,#00000000B      ; clear pending Port B detections


  MODE $0A                ; WKED_B
                          ; 0 = selects rising  edge detection
                          ; 1 = selects falling edge detection
  MOV !RB,#11111111B      ; set high-to-low detection for all Port B pins


  MODE $0B                ; WKEN_B
                          ; 0 =  enable pin for interrupt
                          ; 1 = disable pin for interrupt
  MOV !RB,#11111111B      ; 


  MODE $0C                ; ST_B/C/D/E
                          ; 0 =  enable Schmitt Trigger
                          ; 1 = disable Schmitt Trigger
  MOV !RB,#11111111B	
  MOV !RC,#00000001B 	; enable 1-7 as Schmitt-Trigger
  MOV !RD,#00000000B 	; enable all inputs as Schmitt-Trigger
  MOV !RE,#00000000B 	; enable all inputs as Schmitt-Trigger


  MODE $0D                ; LVL_A/B/C/D/E
                          ; 0 = Sets pin to CMOS
                          ; 1 = Sets pin to TTL
  MOV !RA,#    1111B       ; set 1-3 inputs to TTL levels
  MOV !RB,#11111111B	; set 1-5,7 inputs to TTL levels, 6 to CMOS
  MOV !RC,#11111110B	; set 1-7 inputs to TTL levels, 0 to CMOS
  MOV !RD,#11111111B	; set all inputs to TTL levels
  MOV !RE,#11111111B	; set all inputs to TTL levels


  MODE $0E                ; PLP_A/B/C/D/E
                          ; 0 =  Enable internal pull-up resistor
                          ; 1 = Disable internal pull-up resistor
  MOV !RA,#    0000B	     ; do not use internal weak pull-up resistor
  MOV !RB,#00000000B   ; do not use internal weak pull-up resistor on 0-3 and 6-7
                                     ; internal pull-ups for 4 & 5
  MOV !RC,#00000000B	; do not use internal weak pull-up resistor
  MOV !RD,#00000000B	; do not use internal weak pull-up resistor
  MOV !RE,#00000000B	; do not use internal weak pull-up resistor for 0-6


  MODE $0F                ; TRIS_A/B/C
                            ; 0 = Sets pin to output mode
                            ; 1 = Sets pin to input (High-Z) mode
  MOV !RA,#    0000B	   ; set 0-7 as outputs
  MOV !RB,#11110111B   ; set 0-2 & 4-7 as Hi-Z inputs
                                     ; and pin 3 as output
  MOV !RC,#11111110B	; set 0 as output, 1-7 as Hi-Z inputs
  MOV !RD,#11111111B	; set 0-7 as Hi-Z inputs
  MOV !RE,#11111111B	; set 0-7 as Hi-Z inputs


  MOV !OPTION,#01000000B	; Register $01 is W
                                                ; RTCC roll-over interrupt off
                                                ; Prescaler assigned to WDT
                                                ; Prescaler = 1:1

ENDASM[/code]

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