Error (10528): VHDL error at lcd.vhd(135): value "0" is outside the target constraint

[Altera_Forum]

I had upload a vhd file, please help me check. 

The error is at the line 135 : signal lcd_cmd_ptr : integer range 0 to LCD_CMDS'HIGH + 1 := 0;  I have no any idea about it. Please help me solve it, thanks!

[Altera_Forum]

you get this error while simulating or during compilation? 

Wheres the testbench?

[Altera_Forum]

Just a quick try change X to x

[Altera_Forum]

i get this error when i doing full compilation

[Altera_Forum]

--- Quote Start ---  Just a quick try change X to x  --- Quote End ---   the result still same

[Altera_Forum]

Info: ******************************************************************* 

Info: Running Quartus II Analysis & Synthesis  Info: Version 9.1 Build 222 10/21/2009 SJ Web Edition  Info: Processing started: Sat Dec 01 15:14:44 2012 Info: Command: quartus_map --read_settings_files=on --write_settings_files=off lcd -c lcd Info: Found 2 design units, including 1 entities, in source file lcd.vhd  Info: Found design unit 1: lcd-Behavioral  Info: Found entity 1: lcd Info: Elaborating entity "lcd" for the top level hierarchy Warning (10445): VHDL Subtype or Type Declaration warning at lcd.vhd(135): subtype or type has null range Error (10528): VHDL error at lcd.vhd(135): value "0" is outside the target constraint range (0 to -2147483623) Error: Can't elaborate top-level user hierarchy Error: Quartus II Analysis & Synthesis was unsuccessful. 2 errors, 1 warning  Error: Peak virtual memory: 223 megabytes  Error: Processing ended: Sat Dec 01 15:14:45 2012  Error: Elapsed time: 00:00:01  Error: Total CPU time (on all processors): 00:00:01 Error: Quartus II Full Compilation was unsuccessful. 4 errors, 1 warning

[Altera_Forum]

I compiled it in modelsim with no error

[Altera_Forum]

i compiled it in quartus II 9.1

[Altera_Forum]

it no shows error when i click analysis current file, but it shows error when i click start compilation.

[Altera_Forum]

try giving LCD_CMDS a specified range, or change the LCD_CMDS_T to natural range instead of integer.

[Altera_Forum]

--- Quote Start ---  try giving LCD_CMDS a specified range, or change the LCD_CMDS_T to natural range instead of integer.  --- Quote End ---   thank you very much!!! it works!!!

[Altera_Forum]

--- Quote Start ---  try giving LCD_CMDS a specified range, or change the LCD_CMDS_T to natural range instead of integer.  --- Quote End ---    Thanks, it works!