Re: TypeMatic Rate

Hi Bert,

Thanks for the URL. These seem to agree with what's recently been
posted on this list. I hope to test them on a few machines soon.

I like the URL, "Geezer" OSD. Whatdaya think they mean by that?

Alan KM6VV


Bert Pirson wrote:

>
> I haven't been following this thread so forgive me if this doesn't apply.
>
> According to my IBM ROM BIOS book (1988), Int 16H, Function 03H sets the
> repeat (typematic) rate. According to the book, this is good back to the
> PC-AT. It doesn't say anything about Function 09H, or Function 03H
> returning the rate, only setting it.
>
> Searching the web for "Int 16H 03H" found this web site
> http://www.execpc.com/~geezer/osd/kbd/ which had the following:
>
> INT 16h, AH=03h: set typematic (auto-repeat) rate and delay. Before using
> these functions, use INT 16h, AH=09h to check if they are available.
> INT 16h, AH=03h, AL=05h: set repeat rate BL and delay BH
> INT 16h, AH=03h, AL=06h: return current repeat rate in register BL, current
> delay in BH
>
> value in BH 0 1 2 3 delay (msec) 250 500 750 1000
> BL ranges from 0 for fastest (30 Hz) repeat rate, through BL=0Ch (10 Hz), up
> to BL=1Fh for slowest (2 Hz) rate
>
> Hope this helps.
>
> Bert
>
> ----- Original Message -----
> From: "Alan Marconett KM6VV" <KM6VV@...>
> To: <CAD_CAM_EDM_DRO@yahoogroups.com>
> Sent: Thursday, February 21, 2002 2:42 PM
> Subject: [CAD_CAM_EDM_DRO] Re: TypeMatic Rate
>
> > Which is code that makes BIOS calls to get a Typematic rate. No doubt
> > the new BIOS routine(s) access CMOS for this data. I'm sure not all
> > (especially old '486 machines) have this.
> >