Re: Keyboard Typematic rate

Hi David,

Thanks for the additional information! Yeah, this DOS info is getting
old! Geezer as one URL put it! Seems we need it again!

Another thing I've been trying to get a better handle on is using the
Floating Point math instructions in inline assembly language. Seems
Microsoft 'C' doesn't fully support the same FP instructions as Borland
does. I've recently revised my timing code to use some FP calcs
(suggested by Dave's TurboCNC), and I have a few more areas that can
gain from converting from 'C' code to inline ASM. I have only minimal
documentation on the FP instructions, mainly in an old '386 ASM book.
Gotta be something better out there!

Alan KM6VV


"David A. Forsyth" wrote:

>
> On 21 Feb 02 at 19:56, CAD_CAM_EDM_DRO@yahoogroups.c is alleged to have
> scribbled:
>
> > Message: 20
> > Date: Thu, 21 Feb 2002 10:55:47 -0800
> > From: Alan Marconett KM6VV <KM6VV@...>
> > Subject: Re: Keyboard Typematic rate
> >
> > Hi David,
> >
> > Nice find! My Phoenix book ('91) calls functions 6h - 0Fh "reserved".
> > Nice to know! There you go Jerry!
>
> Hiya Alan
>
> It's a long time since I did some low level DOS stuff (-:
>
> Just struck me to check my interrupt list for this and I find:
> 16 00 -- KEYBOARD - GET KEYSTROKE
> 16 01 -- KEYBOARD - CHECK FOR KEYSTROKE
> 16 02 -- KEYBOARD - GET SHIFT FLAGS
> 16 03 -- KEYBOARD - SET TYPEMATIC RATE AND DELAY
> 16 04 -- KEYBOARD - SET KEYCLICK (PCjr only)
> 16 05 -- KEYBOARD - STORE KEYSTROKE IN KEYBOARD BUFFER (AT/PS w enh keybd
> 16 05 -- KEYBOARD - SELECT KEYBOARD LAYOUT (PCjr only)
> 16 09 -- KEYBOARD - GET KEYBOARD FUNCTIONALITY
> 16 0A -- KEYBOARD - GET KEYBOARD ID
> 16 10 -- KEYBOARD - GET ENHANCED KEYSTROKE (enhanced kbd support only)
> 16 11 -- KEYBOARD - CHECK FOR ENHANCED KEYSTROKE (enh kbd support only)
> 16 12 -- KEYBOARD - GET EXTENDED SHIFT STATES (enh kbd support only)
>
> that 'get keyboard functionality' looks interesting
>
> Details are:
> INT 16 - KEYBOARD - SET TYPEMATIC RATE AND DELAY
> AH = 03h
> AL = subfunction
> 00h set default delay and rate (PCjr and some PS/2)
> 01h increase delay before repeat (PCjr)
> 02h decrease repeat rate by factor of 2 (PCjr)
> 03h increase delay and decrease repeat rate (PCjr)
> 04h turn off typematic repeat (PCjr and some PS/2)
> 05h set repeat rate and delay (AT,PS)
> BH = delay value (00h = 250ms to 03h = 1000ms)
> BL = repeat rate (00h=30/sec to 0Ch=10/sec [def] to
> 1Fh=2/sec)
> 06h get current typematic rate and delay (newer PS/2s)
> Return: BL = repeat rate (see above)
> BH = delay (see above)
> Note: use INT 16/AH=09h to determine whether some of the subfunctions are
> supported
>
> Now, my copy of the list is dated 1994. The list is the
> 'MSDOS Interrupt List issue 41' which I probably got off the archives at
> ftp.oak.oakland or similar. It's been a while.... it even has a DOS
> indexing program (-: