;-----------------------------------------------------------------------
;
; FILE :lowlvl.src
; DATE :Wed, Jul 01, 2009
; DESCRIPTION :Program of Low level
; CPU TYPE :RX
;
;-----------------------------------------------------------------------
                .GLB    _charput
                .GLB    _charget

FC2E0           .EQU    00084080h
FE2C0           .EQU    00084090h
DBGSTAT         .EQU    000840C0h
RXFL0EN         .EQU    00001000h
TXFL0EN         .EQU    00000100h

                .SECTION P,CODE

;-----------------------------------------------------------------------
; _charput:
;-----------------------------------------------------------------------
_charput:
                .STACK  _charput = 00000000h
__C2ESTART:     MOV.L   #TXFL0EN,R3
                MOV.L   #DBGSTAT,R4
__TXLOOP:       MOV.L   [R4],R5
                AND     R3,R5
                BNZ     __TXLOOP
__WRITEFC2E0:   MOV.L   #FC2E0,R2
                MOV.L   R1,[R2]
__CHARPUTEXIT:  RTS

;-----------------------------------------------------------------------
; _charget:
;-----------------------------------------------------------------------
_charget:
                .STACK  _charget = 00000000h
__E2CSTART:     MOV.L   #RXFL0EN,R3
                MOV.L   #DBGSTAT,R4
__RXLOOP:       MOV.L   [R4],R5
                AND     R3,R5
                BZ      __RXLOOP
__READFE2C0:    MOV.L   #FE2C0,R2
                MOV.L   [R2],R1
__CHARGETEXIT:  RTS

;-----------------------------------------------------------------------

; End of conditional code
                .END