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- Newsgroups: sci.electronics
- Path: sparky!uunet!haven.umd.edu!wam.umd.edu!tedwards
- From: tedwards@wam.umd.edu (technopagan priest)
- Subject: Re: HC11 EVB MC68HC24 PRU
- Message-ID: <1993Jan23.194747.7830@wam.umd.edu>
- Sender: usenet@wam.umd.edu (USENET News system)
- Nntp-Posting-Host: rac2.wam.umd.edu
- Organization: University of Maryland, College Park
- References: <1993Jan23.024730.9720@wam.umd.edu> <laird.727798045@pasture.ecn.purdue.edu>
- Date: Sat, 23 Jan 1993 19:47:47 GMT
- Lines: 29
-
- In article <laird.727798045@pasture.ecn.purdue.edu> laird@pasture.ecn.purdue.edu (Kyler Laird) writes:
- >tedwards@wam.umd.edu (technopagan priest) writes:
- >>Hi! I think I just toasted the MC68HC24 PRU (port replacement
-
- >You idiot! What'd you do? Lay an input line across one of the
- >12V rails? (Gee, that's what I did...)
-
- >University Sales (Relations/.../?) at Motorola sent me a new one
- >when I told them I toasted mine. I almost ordered one from Digi-
- >Key or someone like that, but they wanted on the order of $35 for
- >the chip!
-
- Yeah, I think I probably dropped an input line on one of the
- power rails (DOH!). Unfortunately, I am not associated with the
- fine learning institution where I got it from, and also it is
- the old bigger EVB. I assume the new EVBs use the same PRU,
- am I right?
-
- What am I using it for? Well, I have a quad D/A converter, and I
- am using the HC11 to output digital X,Y positions for two galvometers
- to move a laser beam around to do some animation. Last night I
- was using the A/D converter on the HC11 to read an analog joystick
- for use in inputing the point positions, but somehere along the line,
- I messed up, the output ports went into multiplexed mode, and
- the PRU got too hot to touch...
-
- -Thomas
-
-
-