alt_u_div_6od.tdf

完成的是RS422信号的计数功能

--alt_u_div DEVICE_FAMILY="MAX7000S" LPM_PIPELINE=0 MAXIMIZE_SPEED=9 WIDTH_D=14 WIDTH_N=24 WIDTH_Q=24 WIDTH_R=14 denominator numerator quotient remainder
--VERSION_BEGIN 5.0 cbx_cycloneii 2004:12:20:14:28:52:SJ cbx_lpm_add_sub 2005:04:12:13:30:42:SJ cbx_lpm_divide 2005:03:14:22:01:08:SJ cbx_mgl 2005:04:13:17:26:48:SJ cbx_stratix 2005:03:14:17:09:02:SJ cbx_stratixii 2004:12:22:13:27:12:SJ cbx_util_mgl 2005:04:04:13:50:06:SJ  VERSION_END


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FUNCTION add_sub_7b8 (dataa[0..0], datab[0..0])
RETURNS ( cout, result[0..0]);
FUNCTION add_sub_8b8 (dataa[1..0], datab[1..0])
RETURNS ( cout, result[1..0]);
FUNCTION add_sub_oc8 (dataa[10..0], datab[10..0])
RETURNS ( cout, result[10..0]);
FUNCTION add_sub_pc8 (dataa[11..0], datab[11..0])
RETURNS ( cout, result[11..0]);
FUNCTION add_sub_qc8 (dataa[12..0], datab[12..0])
RETURNS ( cout, result[12..0]);
FUNCTION add_sub_rc8 (dataa[13..0], datab[13..0])
RETURNS ( cout, result[13..0]);
FUNCTION add_sub_sc8 (dataa[14..0], datab[14..0])
RETURNS ( cout, result[14..0]);
FUNCTION add_sub_9b8 (dataa[2..0], datab[2..0])
RETURNS ( cout, result[2..0]);
FUNCTION add_sub_ab8 (dataa[3..0], datab[3..0])
RETURNS ( cout, result[3..0]);
FUNCTION add_sub_bb8 (dataa[4..0], datab[4..0])
RETURNS ( cout, result[4..0]);
FUNCTION add_sub_cb8 (dataa[5..0], datab[5..0])
RETURNS ( cout, result[5..0]);
FUNCTION add_sub_db8 (dataa[6..0], datab[6..0])