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                ifndef  __reguart90inc
__reguart90inc  equ     1
                save
                listing off   ; no listing over this file

;****************************************************************************
;*                                                                          *
;*   AS 1.42 - File REGUART90.INC                                           *
;*                                                                          *
;*   Contains Bit & Register Definitions for AT90Sxxxx UART                 *
;*                                                                          *
;****************************************************************************

UDR             port    0x0c            ; UART I/O Data Register

USR             port    0x0b            ; UART Status Register
OR              avrbit  USR,3           ; Overrun
FE              avrbit  USR,4           ; Framing Error
UDRE            avrbit  USR,5           ; Data Register Empty
TXC             avrbit  USR,6           ; Transmit Complete
RXC             avrbit  USR,7           ; Receive Complete

UCR             port    0x0a            ; UART Control Register
TXB8            avrbit  UCR,0           ; Transmit Bit 8
RXB8            avrbit  UCR,1           ; Receive Bit 8
CHR9            avrbit  UCR,2           ; 9 bit Characters
TXEN            avrbit  UCR,3           ; Enable Transmitter
RXEN            avrbit  UCR,4           ; Enable Receiver
UDRIE           avrbit  UCR,5           ; Enable Data Register Empty Interrupt
TXCIE           avrbit  UCR,6           ; Enable Transmit Complete Interrupt
RXCIE           avrbit  UCR,7           ; Enable Receive Complete Interrupt

UBRR            port    0x09            ; Baud Rate Register

                restore                 ; re-enable listing

                endif                   ; __reguart90inc