[A83] Re: PolySmlt

To: <assembly-83@lists.ticalc.org>
Subject: [A83] Re: PolySmlt
From: "Dan Englender" <dan@calc.org>
Date: Tue, 15 Jan 2002 08:24:24 -0500
References: <200201142347.g0ENlj525136@sunsparc.hysoft-automation.com> <0a1401c19d4e$e7dd1440$5ab5d58d@denglend> <001201c19da5$16808290$d905040a@tijl>
Reply-To: assembly-83@lists.ticalc.org


Port 20h on the 83P is a shadow of the link port.

-Dan Englender

----- Original Message -----
From: "Tijl Coosemans" <tijl@ulyssis.org>
To: <assembly-83@lists.ticalc.org>
Sent: Tuesday, January 15, 2002 4:14 AM
Subject: [A83] Re: PolySmlt


>
> > From: "Dan Englender" <dan@calc.org>
> >
> > You could probably optimize that a bit, but if you really need to be as
> > efficient as possible (but suffer the "risk" of dealing directly with
the
> > hardware), you can do this:
> >     in    a,(2)            ;Port two bit 7 is HW type (1=SE)
> >     rla
> >     jr    nc,NotSE
> >     ld    a,1                ;Port 20h 1=15MHZ
> >     out    (20h),a
> > NotSE:
>
> Would setting port 20h, without checking the HW type, suffice? Or is port
> 20h used on the 83+?
>
>
>

References:

[A83] Re: PolySmlt

From: Peter-Martijn Kuipers <hyper@hbyte.net>

[A83] Re: PolySmlt

From: "Dan Englender" <dan@calc.org>

[A83] Re: PolySmlt

From: "Tijl Coosemans" <tijl@ulyssis.org>