Hi! Here is the related RBIL part for you:
--------B-1603-------------------------------
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 (above)
BH = delay (above)
Return: AH destroyed by many BIOSes
Note: use INT 16/AH=09h to determine whether some of the subfunctions are
supported
SeeAlso: INT 16/AH=09h,AH=29h"HUNTER",AH=2Ah"HUNTER"
--------B-1609-------------------------------
INT 16 - KEYBOARD - GET KEYBOARD FUNCTIONALITY
AH = 09h
Return: AL = supported keyboard functions (see #00585)
AH destroyed by many BIOSes
Note: this function is only available if bit 6 of the second feature byte
returned by INT 15/AH=C0h is set (see #00509)
SeeAlso: AH=03h,AH=0Ah,AH=10h,AH=11h,AH=12h,AH=20h,AH=21h,AH=22h,INT 15/AH=C0h
Bitfields for supported keyboard functions:
Bit(s) Description (Table 00585)
7 reserved
6 INT 16/AH=20h-22h supported (122-key keyboard support)
5 INT 16/AH=10h-12h supported (enhanced keyboard support)
4 INT 16/AH=0Ah supported
3 INT 16/AX=0306h supported
2 INT 16/AX=0305h supported
1 INT 16/AX=0304h supported
0 INT 16/AX=0300h supported
SeeAlso: #00511
And here is what FreeDOS "MODE /?" has to say about it:
...
> MODE CON[:] [RATE=...] [DELAY=...]
> (default rate 20, default delay 1)
> Rate can be 1..32 for 2..30 char/sec,
> delay can be 1..4 for 1/4..4/4 sec.
Our MODE just calls the BIOS. There is no DOS typematic rate driver, DOS
only asks the BIOS to set the rate for it.
Regards, Eric
Eric proposed:
"For this, you start DEBUG, then type:
a cs:100
mov ax,0305
mov bx,0000
int 16
int 20
g
q
"
As Ah=3 int 16h is marked as PCJr only:
INT 16 - KEYBOARD - SET DELAYS (PCjr ONLY)
REG AH = 3
AL = 0: RESET TYPEMATIC
AL = 1: INCREASE INITIAL DELAY
AL = 2: INCREASE CONTINUING DELAY
AL = 3: INCREASE BOTH DELAYS
AL = 4: TURN OFF TYPEMATIC
in https://groups.google.com/g/net.micro.pc/c/yg4oazZOA7g/m/uwO-gYOTi2gJ
I hesitate to go there... but did not get the full RBIL.
https://info.wsisiz.edu.pl/~bse26236/batutil/help/MODESTRS.HTM
but I am a bit unsure these options are supported by FreeDOS because:
http://wiki.freedos.org/wiki/index.php/Mode
does not mention them.
Last I was thinking many keyboards are now USB rather than PS/2...
and I think the 8042 chip handle typematic on DOS...
so I was first thinking about BIOS emulation of PS/2 keyboard and mouse in BIOS
options...
but your keyboard would just not work if these options were causing problem I
think.
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