Quartus Block/Symbol

[Altera_Forum]

I've write some vhdl files for my component for example: 

a1.vhd ... a5.vhd and b1.vhd ... b6.vhd I've crated two schematic with their block/symbols a.qsch and b.qsch. But I can't use these two schematics as two component in my top_level... How can I use this approach. I mean instead of drawing all blocks in the top-level schematic, create some block/symbols schematic and use these as new component in my top level design? is it possible?

[Altera_Forum]

Once your vhd file is ready you can convert it into a Block Symbol FIle with 

File>Create/Update>Create symbol files for current file. After the symbol generation you will find the symbol in your Project folder and you will be able to insert it in your top-level bdf file by double-clicking on the sheet and choosing the symbol that you have created before.

[Altera_Forum]

if I may ask  

what board do you work?

[Altera_Forum]

--- Quote Start ---  Once your vhd file is ready you can convert it into a Block Symbol FIle with File>Create/Update>Create symbol files for current file. After the symbol generation you will find the symbol in your Project folder and you will be able to insert it in your top-level bdf file by double-clicking on the sheet and choosing the symbol that you have created before.  --- Quote End ---   Thank but I already know these: I've design a.bdf with this approach form a1.vhd......a5.vhd and b.bdf with this approach form b1.vhd.......b6.vhd and now I want to use a.bdf and b.bdf in my top-level.bdf schematic. my problem is I've had a lot of vhd files I want to draw my top_level.bdf form two three sub_schematic.bdf .... is it possible? or I have to draw all block individually in my top-level.bdf?  P.S.if there is not possible so it's a good offer for next version of quartus.

[Altera_Forum]

Yes it is possible. Also to your sub_schematics bdf files you can apply: 

File>Create/Update>Create symbol files for current file Quartus will create a symbol which will represent your sub_schematics. You follow this procedure for each of your sub_schematics and then you create a new top_level.bdf in which you will recall the three new symbols which were derived from your sub_schematics.

[Altera_Forum]

Thank a lot OrchestraDirector