Which CPU?

John S Gwynne jsg
Thu May 5 21:01:13 GMT 1994

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Date: Thu, 5 May 94 13:53:45 -0700
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Subject: Re: Which CPU?
To: Diy_Efi-Owner, jsg

I should say that although I have started with a 68HC11 I would be 
happy to change to a different CPU if it was easier to program. I just 
picked the 68HC11 because that what we used  in school and I could buy 
EVB cheap. I don't really keep up with what other MCU's are available 
and presumably the newer ones are easier to program so maybe someone 
would like to make a recommendation.

Wes Evernden
From: Diy.Efi-Owner; jsg
Cc: jsg
Subject: Re: Intro
Date: Thursday, May 05, 1994 1:12PM

<<File Attachment: REINTRO.TXT>>

   In message <940505135705.2dc04180 at STDVAX.GSFC.NASA.GOV> , you write:

| A while ago I worked with a company called CUbit - they made, among other
| things, an 80186 based, STD Bus board.  What I particularly enjoyed about
| their set-up is that the on board ROMs would communicate with Borland's C
| Remote debugger.   That means you write the code on a PC (all Borland),
| compile and link it, and then down load it to the board - and you can step
| through the code running on the remote CPU.  A breeze to debug.  Then you
| link the code with a provided library and you can burn that code directly

Yea, this can also be done with GNU's gcc and the GNU debugger gdb; a remote
serial interfaced debugger. That's why I've chosen to work with the 68000 and
a C cross-compiler. It would be nice if we all used the same CPU but I don't
think it's going to happen. A more reasonable goal would be to stick with an
ANSI-C language (available for PC's, 68HC11's, and about everything
else)(avoiding calls to the standard library functions) and have a common
interface bus that would let us share sensory interface designs. This way
you could use the 80186, I could use a 68HC000, and ???? could use
his 68HC11. We could all still share the software (with vary minor changes)
and sensor interface designs.

                                       John S Gwynne
                                          Gwynne.1 at osu.edu
               T h e   O h i o - S t a t e   U n i v e r s i t y
    ElectroScience Laboratory, 1320 Kinnear Road, Columbus, Ohio 43212, USA
                Telephone: (614) 292-7981 * Fax: (614) 292-7292

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