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/usr/share/gputils/header/p16f506.inc is in gputils-common 1.4.0-0.1.

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The actual contents of the file can be viewed below.

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        LIST

;==========================================================================
; Build date : Aug 07 2014
;  MPASM PIC16F506 processor include
; 
;  (c) Copyright 1999-2014 Microchip Technology, All rights reserved
;==========================================================================

        NOLIST

;==========================================================================
;  This header file defines configurations, registers, and other useful
;  bits of information for the PIC16F506 microcontroller.  These names
;  are taken to match the data sheets as closely as possible.
;
;  Note that the processor must be selected before this file is included.
;  The processor may be selected the following ways:
;
;       1. Command line switch:
;               C:\MPASM MYFILE.ASM /PIC16F506
;       2. LIST directive in the source file
;               LIST   P=PIC16F506
;       3. Processor Type entry in the MPASM full-screen interface
;       4. Setting the processor in the MPLAB Project Dialog
;==========================================================================

;==========================================================================
;
;       Verify Processor
;
;==========================================================================
        IFNDEF __16F506
           MESSG "Processor-header file mismatch.  Verify selected processor."
        ENDIF



;==========================================================================
;
;       Register Definitions
;
;==========================================================================

W                EQU  H'0000'
F                EQU  H'0001'

;----- Register Files -----------------------------------------------------

;-----Bank0------------------
INDF             EQU  H'0000'
TMR0             EQU  H'0001'
PCL              EQU  H'0002'
STATUS           EQU  H'0003'
FSR              EQU  H'0004'
OSCCAL           EQU  H'0005'
PORTB            EQU  H'0006'
PORTC            EQU  H'0007'
CM1CON0          EQU  H'0008'
ADCON0           EQU  H'0009'
ADRES            EQU  H'000A'
CM2CON0          EQU  H'000B'
VRCON            EQU  H'000C'

;----- STATUS Bits -----------------------------------------------------
C                EQU  H'0000'
DC               EQU  H'0001'
Z                EQU  H'0002'
NOT_PD           EQU  H'0003'
NOT_TO           EQU  H'0004'
PA0              EQU  H'0005'
CWUF             EQU  H'0006'
RBWUF            EQU  H'0007'


;----- OSCCAL Bits -----------------------------------------------------
CAL0             EQU  H'0001'
CAL1             EQU  H'0002'
CAL2             EQU  H'0003'
CAL3             EQU  H'0004'
CAL4             EQU  H'0005'
CAL5             EQU  H'0006'
CAL6             EQU  H'0007'


;----- PORTB Bits -----------------------------------------------------
RB0              EQU  H'0000'
RB1              EQU  H'0001'
RB2              EQU  H'0002'
RB3              EQU  H'0003'
RB4              EQU  H'0004'
RB5              EQU  H'0005'


;----- PORTC Bits -----------------------------------------------------
RC0              EQU  H'0000'
RC1              EQU  H'0001'
RC2              EQU  H'0002'
RC3              EQU  H'0003'
RC4              EQU  H'0004'
RC5              EQU  H'0005'


;----- CM1CON0 Bits -----------------------------------------------------
NOT_C1WU         EQU  H'0000'
C1PREF           EQU  H'0001'
C1NREF           EQU  H'0002'
C1ON             EQU  H'0003'
NOT_C1T0CS       EQU  H'0004'
C1POL            EQU  H'0005'
NOT_C1OUTEN      EQU  H'0006'
C1OUT            EQU  H'0007'


;----- ADCON0 Bits -----------------------------------------------------
ADON             EQU  H'0000'
GO_NOT_DONE      EQU  H'0001'

GO               EQU  H'0001'
CHS0             EQU  H'0002'
CHS1             EQU  H'0003'
ADCS0            EQU  H'0004'
ADCS1            EQU  H'0005'
ANS0             EQU  H'0006'
ANS1             EQU  H'0007'

NOT_DONE         EQU  H'0001'


;----- CM2CON0 Bits -----------------------------------------------------
NOT_C2WU         EQU  H'0000'
C2PREF1          EQU  H'0001'
C2NREF           EQU  H'0002'
C2ON             EQU  H'0003'
C2PREF2          EQU  H'0004'
C2POL            EQU  H'0005'
NOT_C2OUTEN      EQU  H'0006'
C2OUT            EQU  H'0007'


;----- VRCON Bits -----------------------------------------------------
VRR              EQU  H'0005'
VROE             EQU  H'0006'
VREN             EQU  H'0007'

VR0              EQU  H'0000'
VR1              EQU  H'0001'
VR2              EQU  H'0002'
VR3              EQU  H'0003'



;----- OPTION_REG Bits -----------------------------------------------------
PSA              EQU  H'0003'
T0SE             EQU  H'0004'
T0CS             EQU  H'0005'
NOT_RBPU         EQU  H'0006'
NOT_RBWU         EQU  H'0007'

PS0              EQU  H'0000'
PS1              EQU  H'0001'
PS2              EQU  H'0002'
NOT_GPPU         EQU  H'0006'
NOT_GPWU         EQU  H'0007'


;----- TRISC Bits -----------------------------------------------------
TRISC0           EQU  H'0000'
TRISC1           EQU  H'0001'
TRISC2           EQU  H'0002'
TRISC3           EQU  H'0003'
TRISC4           EQU  H'0004'
TRISC5           EQU  H'0005'


;----- TRISB Bits -----------------------------------------------------
TRISB0           EQU  H'0000'
TRISB1           EQU  H'0001'
TRISB2           EQU  H'0002'
TRISB3           EQU  H'0003'
TRISB4           EQU  H'0004'
TRISB5           EQU  H'0005'



;==========================================================================
;
;       RAM Definitions
;
;==========================================================================
       __MAXRAM  H'007F'

;==========================================================================
;
;       Configuration Bits
;
;   NAME            Address
;   CONFIG             FFFh
;
;==========================================================================

; The following is an assignment of address values for all of the
; configuration registers for the purpose of table reads
_CONFIG          EQU  H'FFF'

;----- CONFIG Options --------------------------------------------------
_OSC_LP              EQU  H'0FF8'    ; LP oscillator and 18 ms DRT
_LP_OSC              EQU  H'0FF8'    ; LP oscillator and 18 ms DRT
_OSC_XT              EQU  H'0FF9'    ; XT oscillator and 18 ms DRT
_XT_OSC              EQU  H'0FF9'    ; XT oscillator and 18 ms DRT
_OSC_HS              EQU  H'0FFA'    ; HS oscillator and 18 ms DRT
_HS_OSC              EQU  H'0FFA'    ; HS oscillator and 18 ms DRT
_OSC_EC              EQU  H'0FFB'    ; EC Osc With RB4 and 1.125 ms DRT
_EC_OSC              EQU  H'0FFB'    ; EC Osc With RB4 and 1.125 ms DRT
_OSC_IntRC_RB4EN     EQU  H'0FFC'    ; INTRC With RB4 and 1.125 ms DRT
_IntRC_OSC_RB4EN     EQU  H'0FFC'    ; INTRC With RB4 and 1.125 ms DRT
_OSC_IntRC_CLKOUTEN  EQU  H'0FFD'    ; INTRC With CLKOUT and 1.125 ms DRT
_IntRC_OSC_CLKOUTEN  EQU  H'0FFD'    ; INTRC With CLKOUT and 1.125 ms DRT
_OSC_ExtRC_RB4EN     EQU  H'0FFE'    ; EXTRC With RB4 and 1.125 ms DRT
_ExtRC_OSC_RB4EN     EQU  H'0FFE'    ; EXTRC With RB4 and 1.125 ms DRT
_OSC_ExtRC_CLKOUTEN  EQU  H'0FFF'    ; EXTRC With CLKOUT and 1.125 ms DRT
_ExtRC_OSC_CLKOUTEN  EQU  H'0FFF'    ; EXTRC With CLKOUT and 1.125 ms DRT

_WDT_OFF             EQU  H'0FF7'    ; WDT disabled
_WDT_ON              EQU  H'0FFF'    ; WDT enabled

_CP_ON               EQU  H'0FEF'    ; Code protection on
_CP_OFF              EQU  H'0FFF'    ; Code protection off

_MCLRE_OFF           EQU  H'0FDF'    ; RB3/MCLR pin functions as RB3, MCLR tied internally to VDD
_MCLRE_ON            EQU  H'0FFF'    ; RB3/MCLR pin functions as MCLR

_IOSCFS_OFF          EQU  H'0FBF'    ; 4 MHz INTOSC Speed
_IOSCFS_ON           EQU  H'0FFF'    ; 8 MHz INTOSC Speed


;----- IDLOC Equates --------------------------------------------------
_IDLOC0          EQU  H'400'
_IDLOC1          EQU  H'401'
_IDLOC2          EQU  H'402'
_IDLOC3          EQU  H'403'

        LIST