[comp.sys.amiga] Right button, /SEL bits

carolyn@cbmvax.UUCP (05/27/87)

(I couldn't Followup on this, so I'm using Pnews to post answer)

> From: hansb@ariel.unm.edu (Richard Harris PSYCHOLOGY)
> What are the hardware memory locations for the right mouse button?
> I have found the left button's location, $BFE001, but the MANUAL
> does not mention the right button even once.  There is another location,
> $BFD100, that mentions /sel0 /sel1 /sel2 /sel3, but absolutely no
> documentation on what they are expecting.

I don't know what "MANUAL" you're looking at.  I had no problem.

1. Right Mouse Button

   C-A Hardware Manual - page 8-5
   A-W Hardware Manual - page 219

   Note - I found these page numbers in the Index under

      Mouse
         buttons  p. nnn

   You will see that the right mouse button is read as a potentiometer
   port and are referred to "Reading Proportional Controllers" for
   more info.  (Note - To find that, look up  Proportional Controllors,
   Reading, in the Index).

   
2. /sel0 /sel1 /sel2 /sel3  are the Disk Select bits described on page
   8-14 of the C-A Hardware manual, page 229 of the A-W hardware manual.
   As for what they expect, I believe "/" means the bits are active low
   (i.e. a 0 in that bit selects that drive)


PS: Be prepared for many obstacles if you are attempting to directly
    deal with parts of the hardware already allocated by Intuition,
    trackdisk, AmigaDOS, etc.

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Carolyn Scheppner -- CBM   >>Amiga Technical Support<<
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