OS_Pbt, Write byte to file / device with timeout

 IN:
     A = byte to be written to file, device
     BC = timeout in 1/100 seconds
     IX = handle of file, device

OUT, if call successful:
     Fc = 0
     BC = remaining in 1/100 seconds
OUT, if call failed:
     Fc = 1
     A = error code:
          RC_HAND ($08), bad handle
          RC_WP ($14), write protected
          RC_ESC ($01), escape, if device is :COM.0, :PRT.0
          RC_TIME ($02), timeout

Registers changed after return:
     ....DEHL/IXIY same
     AFBC..../.... different