tcl commands

[Altera_Forum]

For master_write_32 $master_path [expr $base_reconfig + 0x40*4], can anybody tell me what *4 means exactly? Thanks

[Altera_Forum]

--- Quote Start ---  For master_write_32 $master_path [expr $base_reconfig + 0x40*4], can anybody tell me what *4 means exactly? Thanks  --- Quote End ---   Avalon-MM master addresses are 32-bits wide. The address map for the reconfiguration controller probably has the register offsets in words, i.e., the register located at 32-bit word offset 0x40 is located at byte offset 4*0x40.  If the address map for the reconfiguration controller is already in byte offsets, and the register you want to access is at byte-offset 0x40, then the 4* would be unnecessary.  Cheers, Dave

[Altera_Forum]

Thanks, Dave. 

 * here doesn't mean multiply. So 4*0x40 = 0x00000040. Is that correct?

[Altera_Forum]

--- Quote Start ---  here doesn't mean multiply. So 4*0x40 = 0x00000040  --- Quote End ---    The Tcl command expr means "do some math", so 4*0x40 = 0x100 :)