any website where we could view this... -----Original Message----- From: pic microcontroller discussion list [mailto:PICLIST@MITVMA.MIT.EDU]On Behalf Of Walter Banks Sent: Wednesday, May 26, 2004 7:35 AM To: PICLIST@MITVMA.MIT.EDU Subject: Re: [PIC]:EFI Controller The days of firing the spark plug once in a while and changing the mixture= while monitoring engine temperature is gone. We have just released a C compiler for a peripheral processor that is part= of a multiprocessor controller used in automotive engine controllers. The= processor tools that we did was for the part that talks directly to spark,= injectors, intake and exhaust valving. Increasing attention to fuel efficiency means that the engine= controllers are adjusting mixture in some cases every 3 microseconds= during intake with separate profiles per cylinder. The peripheral processor has two identical execution engines (One= application program, interesting software) a mac, 24 bit word, 4 timers= per pin (32 I/O pins) and a hardware real time executive. The hardware is= essentially a thread machine architecture. Each of these processors can run multiple PID loops. To complete the engine control there is a host processor on the same die= that feeds setpoints and gets performance information to the peripheral= processors. The combination has the computing power of a good laptop. w.. Andrew Warren wrote: > > Nikhil Praveen wrote: > > > does that mean PICs are unsuitable for this purpose? > > Probably, yeah. Ideally, you'd want a fast microprocessor with > powerful timers, a large memory space accessible through an > external address/data bus, analog inputs, maybe an analog output > or two, etc. > > Motorola and Intel, among others, have micros that were > specifically designed for automotive engine-management > applications; you may have better luck with one of those than > with a PIC. > > -Andy -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu ___________________________________ Telecom disclaimer can be found at: Http://www.telecomfiji.com.fj/disclaimer.htm ------------------------------------------------------------------------- This e-mail message has been scanned and cleared by Trend Micro InterScan ------------------------------------------------------------------------- -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu