Difficulties in causing the vga to count from 0 to 799

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It counts from 0 to 13 but i want it to count from 0 to 799 as the heading says about counter_int.h and counter_int.v

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your counting logic doesn't do what you want.

at reset you set counter_int.h to 1

at 799 you set to 755

then you increment it in between.

once it reaches 799 it will just go to 755 then 799 then 755 back and forth

here is your code

if counter_int.h >= 799 then  
         counter_int.h <= 755; --(others => '0');
  else
         counter_int.h <= counter_int.h + 1;
end if;