Re: An OS in Ada, why not RTEMS ?

[sk <noname@myob.com>]

Hi,

>- GNAT (or GCC) compiles to a logically flat memory model.  That 
> ...
>---
>with System; use System;
>with System.Storage_Elements; use System.Storage_Elements;
>procedure Hello is
>  Char : Character;
>  for Char'Address use To_Address (16#B8000#);
>begin
>  Char := 'H';
>end Hello;   
>---
> ...
>GNAT 

Do you expect this to put the character 'H' on the screen ?

I think of storage elements as bytes, with bytes and characters
being synonymous. 

However, the PC VGA card "thinks" storage_elements are words; 
8-bits are for color attributes, and 8-bits are for the character.

It took me a while to solve the mystery of very strange and 
seemingly random colored characters popping up on the screen.

 o o
  |
 \_/

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