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- Path: sparky!uunet!gatech!prism!cchapman.gatech.edu!cchapman
- From: cchapman@matd.gatech.edu (Charles H. Chapman)
- Newsgroups: sci.electronics
- Subject: Re: M68HC11 info needed
- Message-ID: <cchapman.134.715285782@matd.gatech.edu>
- Date: 31 Aug 92 18:29:42 GMT
- References: <keb2oo600UhWE8=LEa@andrew.cmu.edu> <1992Aug29.045135.11282@ee.ubc.ca>
- Sender: news@prism.gatech.EDU
- Organization: Georgia Institute of Technology
- Lines: 31
-
- In article <1992Aug29.045135.11282@ee.ubc.ca> jmorriso@ee.ubc.ca (John Paul Morrison) writes:
- >In article <keb2oo600UhWE8=LEa@andrew.cmu.edu> hk0w+@andrew.cmu.edu (Hanjoon Alex Kim) writes:
- >>I have no idea what kind of responses I'll get, since this is my first posting.
- >>I am currently working on a project which involves the Motorola 68HC11.
- >>Now, I ran into a problem with the Mac. The Mac C compiler for the 68HC11 that
- >>I have does not like to divide numbers or deal with floating points. And,
- >>being a student, I don't have the money to buy a compiler that does. Do you
- >>know of any solutions to my problem? Maybe a cheap (~$20) compiler out there
- >>for the Mac? Or a way around my problem?
- >
- >The MC68HC11xx series has no math instructions, so the compiler wont do them.
- >Someone already sugested calling the Motorola Freeware BBS.
- >
- >If you have the money for yet another more expensive 6811, you can check
- >out the MC68HC711 series (I think it's 711) which has built in math instuctions.
- >
-
- Huh?? What is your definition of math instructions? The 68HC11 has add,
- subtract, multiply (and maybe divide, too. I can't remember) instructions.
- These are all integer only instructions but you can certainly use them
- as the building blocks for complete floating point libraries. Heck, I
- can run Quick Basic on my 8088 PC with no coprocessor and do all kinds of
- transcendental math functions and the 8088 has the same class of math
- instructions as the 68HC11, although it uses 16 bits instead of 8.
-
- Chuck
-
- Charles H. Chapman (GTRI/MATD) (404) 528-7588
- Georgia Institute of Technology, Atlanta Georgia, 30332
- uucp: ...!{allegra,amd,hplabs,ut-ngp}!gatech!matd!cchapman
- Internet: cchapman@matd.gatech.edu
-