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From: kagle@batcomputer.tn.cornell.edu (Jonathan C. Kagle)
Newsgroups: comp.periphs,comp.sys.amiga
Subject: Re: Extending Amiga Keyboard Cable
Message-ID: <1969@batcomputer.tn.cornell.edu>
Date: Thu, 8-Jan-87 11:12:15 EST
Article-I.D.: batcompu.1969
Posted: Thu Jan  8 11:12:15 1987
Date-Received: Fri, 9-Jan-87 06:11:59 EST
References: <3692@sdcc3.ucsd.EDU>
Reply-To: kagle@batcomputer.UUCP (Jonathan C. Kagle)
Organization: Theory Center, Cornell University, Ithaca NY
Lines: 34
Keywords: Keyboard
Summary: There are several Amiga keyboards
Xref: mnetor comp.periphs:118 comp.sys.amiga:1330

In article <3692@sdcc3.ucsd.EDU> ee173way@sdcc3.ucsd.edu.UUCP (John Schultz) writes:
>Why can't I use a longer handset cable with my keyboard? 
>I've tried 25 feet, then 12, haven't tried 6 yet.  Anyway, RKM says it
>can be done, but using 25, or even 12 foot cables, the keyboard is
>unable to establish communications with the computer, the red caps
>lock led just comes on a constant red (no flashing) which probably
>means something (haven't looked it up yet...).  So what is the
>limit?
>
>John
>7OHN

	When I tried to do the same thing with my early-vintage Amiga, I had
the same problem.  When I tried a colleague's Amiga keyboard with my Amiga
and extended cable, everything worked.  On closer, inspection, there are at
least three release versions of the Amiga keyboard- the two newest ones seem
to work with extended cables.

	1)  Keyboard with deeply sculpted F and J keys and a dull checkmark
	    logo in the corner (Mine didn't even have a serial number).  
	    This type doesn't seem to work.

	2)  Keyboard with deeply sculpted F and J keys and a shiny checkmark
	    logo in the corner.  This type works.

	3)  Keyboard with raised dots on the D and K keys and a shiny check-
	    mark logo in the corner.  This type also works.

I am not sure that these external features would always correspond to the
internal circuitry; perhaps someone at Commodore could enlighten us as to the
exact serial numbers which had the old electronics?

Jon
7OHN