[Coco] OS-9 How to sense any key ?

[Christopher R. Hawks]

On Fri, 28 Mar 2014 15:53:43 -0400
"Luis Antoniosi (CoCoDemus)" <retrocanada76 at gmail.com> wrote:

> The "press any key to continue" is a LIE. You cannot press the
> hibernate or power-off key...

	It's not a lie, it just predates the hibernate and power-off
keys (and you).

> On Thu, Mar 27, 2014 at 11:24 PM, Kip Koon <computerdoc at sc.rr.com>
> wrote:
> > Hi Luis!
> > I have had people tell me that they can't find the any key!  :)
> > For real! I've had to tell them the any key does not exist so I
> > would have to say that it is impossible to sense the any key!  :)
> > I thought that might amuse you! :)
> > Kip
> >
> > -----Original Message-----
> > From: coco-bounces at maltedmedia.com
> > [mailto:coco-bounces at maltedmedia.com] On Behalf Of Luis Antoniosi
> > (CoCoDemus) Sent: Thursday, March 27, 2014 10:06 PM
> > To: CoCoList for Color Computer Enthusiasts
> > Subject: [Coco] OS-9 How to sense any key ?
> >
> > I checked the KeySns GetStt but it seems to sense only control +
> > cursor keys.
> >
> > On cp/m i need to do:
> >
> > * sense if there is any key pressed
> > * get the key without removing it from the queue
> >
> > this is the function I need to repdroduce. DbaseII uses that:
> >
> > BDOS function 6 (C_RAWIO) - Direct console I/O
> >
> > Supported by: CP/M 1.4 and later, with variations
> >
> > Entered with C=6, E=code. Returned values (in A) vary.
> >
> > E=0FFhReturn a character without echoing if one is waiting; zero if
> > none is available. In MP/M 1, this works like E=0FDh below and waits
> > for a character.E=0FEh[CP/M3, NovaDOS, Z80DOS, DOS+] Return console
> > input status. Zero if no character is waiting, nonzero
> > otherwise.E=0FDh[CP/M3, DOS+] Wait until a character is ready,
> > return it without echoing.E=0FCh[DOS+] One-character lookahead -
> > return the next character waiting but leave it in the buffer.
> >
> > Values of E not supported on a particular system will output the
> > character. Under CP/M 2 and lower, direct console functions may
> > interact undesirably with non-direct ones, since certain buffers may
> > be bypassed. Do not mix them.
> >
> >
> > --
> > Long live the CoCo
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> >
> >
> > --
> > Coco mailing list
> > Coco at maltedmedia.com
> > http://five.pairlist.net/mailman/listinfo/coco
> 
> 
> 




Christopher R. Hawks
HAWKSoft
-- 
When a true genius appears in this world, you may know him by this
sign, that the dunces are all in confederacy against
him.	--Jonathan Swift