RANGE attribute use

[Shannon]

The newbie is back!

Why can't I do this:

type table_array IS ARRAY (0 to 16) of STD_LOGIC_VECTOR(11 downto 0);
signal table: table_array;
....

FOR i in 1 to table'RANGE loop
....


Shannon

 

[KJ]

The newbie is back!

Why can't I do this:

type table_array IS ARRAY (0 to 16) of STD_LOGIC_VECTOR(11 downto 0);
signal table: table_array;
...

FOR i in 1 to table'RANGE loop
...

Because the correct syntax is...
FOR i in table'RANGE loop
KJ

 

[Shannon]

The newbie is back!




Because the correct syntax is...
FOR i in table'RANGE loop
KJ

Almost.

An allowed syntax is:

FOR i in 1 to 10 Loop

Correct?

if table'range = 10 then why couldn't I say

FOR i in 1 to table'range Loop

?

 

[Allan Herriman]

Almost.

An allowed syntax is:

FOR i in 1 to 10 Loop

Correct?

Good so far.

if table'range = 10 then why couldn't I say

No. table'range isn't "10". It is a range 1 to 10. It includes both
the left and right limits, and the direction (to or downto).

Regards,
Allan

 

[Shannon]

Good so far.


No. table'range isn't "10". It is a range 1 to 10. It includes both
the left and right limits, and the direction (to or downto).

Regards,
Allan

Darn! You were too fast for me Allan. I feel so dumb. I thought
RANGE meant "max". I'll just use 'right or 'high. duh...I feel
silly. In my defense I'm trying to code and take care of my two year
old and 11 month old kids at the same time...It has an effect on your
concentration.

Shannon