Subversion Repositories pentevo

                ifndef  regsx20                 ; avoid multiple inclusion
regsx20inc       equ     1

;****************************************************************************
;*                                                                          *
;*   AS 1.42 - File regsx20.inc                                             *
;*                                                                          *
;*   Contins register & bit definitions for Parallax SX20                   *
;*                                                                          *
;****************************************************************************

                save
                listing off              ; disable listing on this file

                switch  MOMCPUNAME
                case    "SX20","SX28"
                elsecase
                fatal  "wrong processor type: only SX20 or SX28 supported."
                endcase

                if      MOMPASS=1
                 message "Parallax SX20/28 SFR Definitions (C) 2019 Alfred Arnold"
                endif

INDF            sfr     $00             ; access (FSR)
PC              sfr     $02             ; bits 0..7 of program counter
STATUS          sfr     $03             ; Status Register
C               bit     STATUS.0        ;  Carry
DC              bit     STATUS.1        ;  Digit Carry
Z               bit     STATUS.2        ;  Zero Flag
PD              bit     STATUS.3        ;  Power Down
TO              bit     STATUS.4        ;  Time Out
PA0             bit     STATUS.5        ;  (Code) Page Address Bits
PA1             bit     STATUS.6
PA2             bit     STATUS.7
FSR             sfr     $04             ; File Select Register

RTCC            sfr     $01             ; Real-Time Clock/Counter

RA              sfr     $05             ; Port A
RB              sfr     $06             ; Port B
                if      MOMCPUNAME="SX28"
RC              sfr     $07             ; Port C
                endif


;----------------------------------------------------------------------------

                restore                 ; re-enable listing

                endif                   ; regsx20.inc