[fpu] Re:

["Damjan Lampret" <lampret@opencores.org>]

Hi Chen,

 

Rudi Usselmann developed this code. His email is rudi@opencores.org.

 

regards,

Damjan

 

----- Original Message -----

From: Chieu Minh

To: fpu-digest

Sent: Wednesday, August 15, 2001 10:23 AM

Hi,

I'm reading the source code FPU which 's downloaded from www.opencores.org

I have trouble with this . In the file pre_norm_fmul.v at line 99-103

assign {co2,exp_tmp2} = op_div ? ({co1,exp_tmp1} + 8'h7f) : ({co1,exp_tmp1} - 8'h7f);

assign exp_tmp3 = exp_tmp2 + 1;
assign exp_tmp4 = 8'h7f - exp_tmp1;
assign exp_tmp5 = op_div ? (exp_tmp4+1) : (exp_tmp4-1);

I don't know why we have to plus 8'h7f with {co1,exp_tmp1}  when division and subtract {co1,exp_tmp1} with 8'h7f

If everyone have any idea about this trouble , please send them for me.

All your helps will be appreciated.

Your sincerely,

TRUNG