how can I make the input to HDL FIFO Scalar ?

I have used the HDL FIFO block of dhldemolib in Simulink but when i start "Run compatibility check" to generate the VHDL code, an error appears which state that the HDL FIFO only supports a scalar input. how can I solve such a problem. i tried too many solutions but non of them works ??? any one can help me, please?

Answer 1

[Tim McBrayer]

The signal attached to the HDL FIFO's 'In' port must be a scalar; its dimensions must be static, a [1x1] matrix. To help you understand what your Simulink signal dimensions are, make sure the following settings are selected on your model:

 Display>Signals & Ports>Signal Dimensions
 Display>Signals & Ports>Wide Nonscalar Lines

The Display>Signals & Ports>Port Data Types setting can also be very useful in diagnosing type issues in Simulink.

[Esmail Abo-basha]

the input to the input port of HDL FIFO is int8 and to the push and pop ports are boolean. i can't figure out what is wrong ??? how can i make int8 scalar ???

[Esmail Abo-basha]

please i need to know the answer

I have put two screen shots of my design on drop box and i wish if you can take a look at them. in the first screen shot https://www.dropbox.com/sh/4zq1e6hkxt9joh7/1Ce8sKNG6Q/Screenshot%202014-04-17%2011.03.34.png

the design report 3 errors state that the HDL FIFO accept only Scalat input data type

in the second photo i made a small modification as you can see https://www.dropbox.com/sh/4zq1e6hkxt9joh7/dotLTAT_-R/Screenshot%202014-04-17%2011.12.28.png

and the design reports no errors i can't figure out what is wrong with the first photo ?? i didn't change any data type i just separated between the two input !!!

i hope i don't waste your time and thank you very much for your help