There  is a few Line-A calls that I didn't have time to  document 
up therefore it wont be any source examples to this part, perhaps 
in a later issue it will be sources to it.

------------
$A007 Bitblt

This command is useless if you have a STE or a mega since all you 
can  do with this call can be done with the Blitter and it's  not 
as difficult either.  Check my blitter articles to get any use of 
the blitter.

-------------
$A008 TEXTBLT

I'll jump over this one,  since it's far to complext to  describe 
here, I'll give it a stand-alone article later on.

----------------
$A009 Show mouse

This  turn  on the mouse when it have been turned  off  with  the 
$A00A  call.  It only works if you the amount of $A009  calls  is 
greater then the amount of $A00A calls.

To call it do like this:

     DC.W $A009

That's all.

----------------
$A00A Hide mouse

This  one is the oppisit of the previous one,  it turns  off  the 
mouse. To use it simply type:

     DC.W $A00A

Not especially difficult.

---------------------
$A00B Transform mouse

Yet another one I didn't have time to document up.  I'll be  back 
in a later issue with this call.  Since it requires a whole bunch 
of values.

-----------------------------------------
$A00C & $A00D Undraw sprite & Draw sprite

Though  two  calls  are not useful at all since  sprites  can  be 
generated  though the blitter much faster,  read the next  issues 
blitter  article part II for information about sprites  with  the 
blitter.  Waring!  This  call  isn't  avaible  on  diskbased  TOS 
versions.

----------------------
$A00E Copy raster form  

Yet another unusful call,  yepp! That's right man, not to any use 
at all.  A normal person wouldn't look at this call since all  it 
does is to copy memory blocks around in memory,  that can be done 
with  the blitter.  But incase there is any mad freak  with  some 
suicide tendencys (great music group!  I like their trash metal.) 
out there is here a description of the call.

Only  two parameters has to be passed,  they are pointers to  two 
MFDB's one for the source and one for the destination.  They  are 
passed like this:
     DC.W      $A000
     MOVE.L    4(A0),A0
     MOVE.L    SOURCE,$E(A0)
     MOVE.L    DESTIN,$12(A0)
     DC.W      $A00E
That's it, but what is the MFDB's then? Well they are a bounch of 
values organized like this:
Offset from the start pointer of the block and description:

     0         Memory pointer to 32bit address of pixel 0,0
     4         Width     word only
     8         Height      --"--
     12        Word width     Pixel width/word size
     16        Format flag
     20        Memory planes (remember the bit planes?)
     24        reserved
     28        reserved
     32        reserved
     36        empty

The format flag is this:

        +ve  |        -ve  |  Operation | Format
  Fg  |  Bg  |  Fg  |  Bg  |------------|
------------------------------------------------
   0     0      0      0      Transparent    0
   0     1      0      1      Background     1    
   1     1      1      1      Foreground     2
   1     0                    Foreground     2
                1      0      Xor screen     3

Well let's forget this call now.

----------
$A00F Contopur fill
                             
This is a odd one,  it exists in "Consice" but not in "Internals" 
and  I I finds about it is that a color index value ought  to  be 
oassed  and  then  is  should  be  called,  strande  no  X  or  Y 
coordinates. I'll be back later with this call.                                 

Well,  that was that. As you might see is it several calls that I 
dont  know  much about I'll be back in a later issue  (in  a  few 
months) with the description of those in Line-A part 3. 

See ya.

Article written by Kent Johansson

Call +46(0)90139994.