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I was playing with my 48SX. After running the "standard" keyboard test KBD1 by ON+D then E, I discovered that ON+D followed by F launches a test called KBD2. But, I don't know what it does. I haven't been able to find this documented (this is not in the manual, and Google did not help). Does anyone here know?

(I did not try this on my 48G, which is in my office at work.)


PS: I found some info on KBD2 test for the 49G:
HP49G KBD2 test on comp.sys.hp48
This test is docmented in the HP-48 FAQ list (availble on hpcalc.org and many other places) but the description merely says "Partial keyboard test". I have seen this documented in more useful detail somewhere, but don't recall where... (or even when).

Maybe comp.sys.hp48 would have something?
http://lmgtfy.com/?q=KBD2+test+in+HP48SX, see the first result ... Wink
(05-21-2014 06:31 AM)Didier Lachieze Wrote: [ -> ]http://lmgtfy.com/?q=KBD2+test+in+HP48SX, see the first result ... Wink

LOL!! Today, the first result is this very thread!

I think this is the one that was first when Didier posted.

Thanks for that Didier, I knew I saw it somewhere. I recalled the upper diagonal, but not the lower one so could not get it to complete.
Thanks for the link, Bob. I had forgotten about that page. I always pull up a local copy of the HP 48 FAQ when I need it.
Thanks for the replies. (I'm a bit surprised this answer is in rskey.org rather than in comp.sys.hp48 or in this forum.) Perhaps this could be inserted into the 48 FAQ? (Well, I suppose it's not really a *frequently* asked question...)

(05-21-2014 08:06 PM)supernumero Wrote: [ -> ]Well, I suppose it's not really a *frequently* asked question...


That and it's about 15 years too late to update the 48 FAQ.

Unless you are volunteering? ;-)
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