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Conference hydra::amiga_v1

Title:	AMIGA NOTES
Notice:	Join us in the NEW conference - HYDRA::AMIGA_V2
Moderator:	HYDRA::MOORE

Created:	Sat Apr 26 1986
Last Modified:	Wed Feb 05 1992
Last Successful Update:	Fri Jun 06 1997
Number of topics:	5378
Total number of notes:	38326

2899.0. "Can an LK250 be used on an A2000?" by UFP::LARUE (Jeff LaRue - MAA Senior Network Consultant) Wed Sep 06 1989 22:19

    There have been several notes over the past few years having to
    do with replacing the standard keyboard on either the A1000 or
    A2000 with various "other" full-size keyboards. (e.g. #557 and
    #2017)
    
    Can anyone provide an update and/or some further information on what
    can be done?  In particular, does anyone have any thoughts on
    connecting the LK250 keyboard to the A2000?  Since the LK250 is
    our LK201 for the IBM PC.....might that make it a simple plug-in
    replacement?
    
    -tnx,
    	  Jeff

T.R	Title	User	Personal Name	Date	Lines
2899.1		UFP::LARUE	Jeff LaRue - MAA Senior Network Consultant	`Fri Sep 08 1989 17:40`	22
	Well, I went and tried connecting an IBM PC keyboard to the Amiga..and vice-versa. They are plug compatible and apparently the voltage and current levels are within limits......nothing was damaged by this little exercise. However, it didn't work. The Amiga just sat there and nothing happens when the keyboard is used. In the case of the PC, something like "bad key codes" were gotten when using the Amiga's keyboard. So. Perhaps it is now a matter of trying to replace the Amiga's keyboard routine with a custom routine for the PC keyboard (or the LK250). Can anyone provide any help/guidance as to how one might do such a thing? -thanks, Jeff
2899.2	keymap?	WJG::GUINEAU	Impossible Concentration	`Sat Sep 09 1989 10:15`	9
	Maybe you just need to set up the proper keymap. There is a SetMap AmigaDOS command (startup-sequence usually has a "SetMap USA1" in it) and also I've seen keymap editors. You also might want to look into the KeyToy2000 tool on your extras disk. John
2899.3		UFP::LARUE	Jeff LaRue - MAA Senior Network Consultant	`Thu Nov 02 1989 13:53`	10
	Re: .-1 Unfortunately.....nope. Neither of those suggestions appear to offer a way to actually define the key encodings. ...any other ideas? [does anyone know which system file the keyboard driver is located in?] -Jeff
2899.4	Not exactly a file	TLE::RMEYERS	Randy Meyers	`Thu Nov 02 1989 17:32`	5
	Re: .3 >[does anyone know which system file the keyboard driver is located in?] ROM.
2899.5	2000 keyboard on 500	WJG::GUINEAU		`Thu Nov 02 1989 22:23`	101
	From USENET: Article 8076 of comp.sys.amiga.tech Path: shlump.nac.dec.com!decuac!haven!purdue!tut.cis.ohio-state.edu!bloom-beacon!eru!luth!sunic!liuida!slaka!micke From: [email protected] (Mikael Karlsson) Newsgroups: comp.sys.amiga.tech Subject: 2000 kbd to 500 Message-ID: <[email protected]> Date: 25 Oct 89 09:32:32 GMT Followup-To: comp.sys.amiga.tech Lines: 84 In article <[email protected]> Dale Larson writes: >I do not recommend replacing your A500 keyboard with an A2000 keyboard. I don't share Dale's opinion. I certainly recommend replacing the keyboard. This is an article that I wrote two months ago but never got around to posting: ---------------------------------------------------------------------- Some time ago somebody asked if it was possible to connect an A2000 keyboard to an A500. Well, it is, sort of... Here's the story. Ins and outs (from the TECHREF manual): A2000 2 1 KCLK Keyboard clock __ _____ 5 4 2 KDAT Keyboard data \| \| \____ 3 NC ---> \| \| \|____ 3 1 4 GND \|__\|_____/ 5 +5 6 SHIELD 6 A500 - from left to right when facing the machine (bus side to floppy side) 1 KDAT Keyboard data 2 KCLK Keyboard clock 3 RESET Reset signal (Hard wired) 4 +5 5 KEY Beats me 6 GND 7 STATW Power LED 8 INUSE Floppy LED Using this information I connected 2000 to 500; 1-2, 2-1, 4-6, 5-4. When I switched on I got a stream of (not acrid smoke :-) quotes. According to an earlier posting by George Robbins at CATS this meant that KDAT and KCLK were swapped. I changed my connections to: 1-1, 2-2, 4-6, 5-4. This time, no smoke, no quotes. So, I try to type something. Things look strange and after a couple of characters I get no output. Since I use conman (and VT100s) I try a Ctrl-Q. Ok, back in business. By now I can type almost anything, except "m", "n" and cursor keys. After a while I realise that these keys have some special meaning when used together with left and right amiga keys. I press and release left amiga and right amiga and finally everything works. So it seems like the A500 believes that the reset-keys are down. By pressing and releasing them one at a time I tell the A500 that they're up. The same thing happens if you try to reboot the A500 by pressing ctrl-amiga-amiga. What happens is that the A500 registers that the keys are pressed and then the keyboard resets itself leaving the A500 believing that the reset-keys are still down. Question: How does the A2000 detect a reset? Is there any HW involved? Is there a difference in the ROMs between the A500 and the A2000? Disclaimer: I take no responsibility at all for any damage made to your Amiga. Neither because of this fix or any other reason, such as earth quakes, tornados etc. Problems: You can't do a 3-finger reset. It doesn't matter much to me since I don't reboot often (twice a week maybe). Questions: Why did I have to swap KDAT and KCLK? Have I done anything wrong? Would it be possible to connect both keyboards at the same time? Would it be possible to connect a keyboard via the serial port? Where can I find a specification of the data sent from the keyboard? Comments? George? Dave? Last recommendation: I would feel much safer if you wait for somebody who knows what he's talking to acknowledge this before you start mutilating your Amiga 500 (and your friend's A2000 ;-). ---------------------------------------------------------------- Have fun. Mikael Karlsson, Lovsattersvagen 10, S-585 98 LINKOPING, SWEDEN [email protected], [email protected] {mcvax,munnari,seismo}!enea!liuida!slaka!micke [email protected]