Dallas says this part is obsolete and you should move to the pin compatible alternative for new designs... ____________ Steven Donegan SSCC/NORC Car #86 www.sscc.us
--- On Wed, 7/21/10, Richard Erlacher <rich...@idcomm.com> wrote: > From: Richard Erlacher <rich...@idcomm.com> > Subject: Re: [Sdcc-user] Ultra-High-speed Maxim/Dallas parts > To: sdcc-user@lists.sourceforge.net > Date: Wednesday, July 21, 2010, 4:44 PM > Yes, I know this has been a long time > coming, but ... why is it important to > disable interrupts when using the "auto DPTR stuff", > autoincrement/autodecrement/autotoggling? It would > appear to me that such > processes would be entirely and safely interruptible so > long as one ensured > the DPTR were not disturbed during ISR's. Maybe I've > overlooked something? > > regards, > > Richard Erlacher > > > > ----- Original Message ----- > From: "Frieder Ferlemann" <frieder.ferlem...@web.de> > To: <sdcc-user@lists.sourceforge.net> > Sent: Monday, June 27, 2005 11:09 AM > Subject: Re: [Sdcc-user] Ultra-High-speed Maxim/Dallas > parts > > > > Hi, > > > > Richard Erlacher wrote: > >> Has anyone successfully used SDCC in combination > with the Maxim/Dallas > >> 89C4x0 types? > > > > There are definitions for the DS89C420 in the combined > include file > > mcs51reg.h > > (since Nov 9, 2000). The file is part of the > distribution. A direct link: > > http://cvs.sourceforge.net/viewcvs.py/sdcc/sdcc/device/include/mcs51/mcs51reg.h?view=markup > > > > > > Does it actually utilize the second data pointer, > and/or > >> other features of that device series, e.g. > extended SFR set? You'd > > > > It's supported as a plain 8051 with no fancy > features. > > > > If you want to make use of dptr toggle/increment > tricks > > you could use inline assembly. This is comparatively > easy > > with SDCC. > > Remember to disable interrupts when using any of the > > "auto DPTR stuff" > autoincrement/autodecrement/autotoggling. > > > > Greetings, > > Frieder > > > > > > > ------------------------------------------------------- > > SF.Net email is sponsored by: Discover Easy Linux > Migration Strategies > > from IBM. Find simple to follow Roadmaps, > straightforward articles, > > informative Webcasts and more! Get everything you need > to get up to > > speed, fast. http://ads.osdn.com/?ad_id=7477&alloc_id=16492&op=click > > _______________________________________________ > > Sdcc-user mailing list > > Sdcc-user@lists.sourceforge.net > > https://lists.sourceforge.net/lists/listinfo/sdcc-user > > > > > ------------------------------------------------------------------------------ > This SF.net email is sponsored by Sprint > What will you do first with EVO, the first 4G phone? > Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first > _______________________________________________ > Sdcc-user mailing list > Sdcc-user@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/sdcc-user > ------------------------------------------------------------------------------ This SF.net email is sponsored by Sprint What will you do first with EVO, the first 4G phone? Visit sprint.com/first -- http://p.sf.net/sfu/sprint-com-first _______________________________________________ Sdcc-user mailing list Sdcc-user@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/sdcc-user
