If Block erroneous output

Refer to the image at the following link attached for understanding the question. Image: http://www5.picturepush.com/photo/a/12014483/img/12014483.jpg

There are 2 inputs: 1.Speed_Pulse 2.PreviousSpeedPulse_1_old

The second input is nothing but the first input delayed in time by 1 time instant using the unit delay block. The 'If' block compares the 2 inputs. If the input 'u1' (Speed_Pulse) is less than 'u2'(PreviousSpeedPulse_1_old) then, in the 'if action' block, the value 64 is simply added to u1 (Speed_Pulse) value. Else, the input Speed_Pulse is directly transmitted to the output via the 'else action' block. One of the outputs is transmitted to 'Temp' (depending on the 'if-else') using the 'Merge' block.

Now refer to following table of inputs and outputs. Table at this link: http://img521.imageshack.us/img521/8684/tablewy.png

The values are wrong for instant 4 and instant 7. Any idea what is going wrong?

[Rahul]

Links Corrected. Any idea anyone?