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;;delay_us

#include 

#include 

#include 

#include 

#define DELAY_COUNT (CYGHWR_HAL_H8300_PROCESSOR_SPEED/1000000)*16/8

//      .file   "delay_us.S"

        .h8300h

        .text

        .global CYG_LABEL_DEFN(hal_delay_us)

CYG_LABEL_DEFN(hal_delay_us):

        mov.b   #0,r1l

        mov.b   r1l,@CYGARC_8TCNT2:8

        mov.b   r1l,@CYGARC_8TCSR2:8

        mov.b   #DELAY_COUNT+1,r1l

        mov.b   r1l,@CYGARC_TCORA2:8

        mov.b   #0x09,r1l

        mov.b   r1l,@CYGARC_8TCR2:8

        mov.b   #0,r2h

        sub.w   e1,e1

1:

        mov.l   er0,er0

        ble     3f

2:

        btst    #6,@CYGARC_8TCSR2:8

        beq     2b

        bclr    #6,@CYGARC_8TCSR2:8

        dec.l   #1,er0

        bra     1b

3:

        mov.b   #0,r0l

        mov.b   r0l,@CYGARC_8TCR2

        rts