davis@groucho.ucar.edu (Glenn P. Davis) (12/14/90)
For an experimental heating control system I wish to gather temperatures from 5 or so locations and be able to do say 5 or so 24 volt ~50ma contact closures. System also needs Time of Day clock, RS232 or 422 serial interface and some contact closure inputs. Product needs some high level programming support, like FORTH or (arg) a BASIC interpreter or? Any suggestions as to vendors that have board level components to do this sort of thing? Glenn P. Davis UCAR / Unidata PO Box 3000 3300 Mitchell Lane, Suite 170 Boulder, CO 80307-3000 Boulder, CO 80301 (303) 497 8643
nanders@plains.NoDak.edu (Noel Anderson) (12/16/90)
I would suggest the Motorola 68HC11evb which lists at $168 ($68.11, educational). The board comes with an assembler, an HC11 reference manual, and an EVB reference manual. You need to provide a power supply and a cable to your host (PC, Mac, whatever). The evb includes parallel and serial I/O (I think at 25 mA, not the desired 50 mA), a timer which can be programmed for time of day use, and a dedicated 6850-based serial port. A BASIC interpretter may be obtained from the Motorola BBS. At NDSU we've developed a Borland-style program development environment and simulator which facilitates assembly language programming. We use the environment and evb in one of our microprocessor courses and have been pleased with it. -- Noel W. Anderson nanders@plains.nodak.edu (Internet) Asst Prof, Computer Engineering uunet!plains!nanders (UUCP) EEE Dept, North Dakota State University nanders@plains (Bitnet)
nanders@plains.NoDak.edu (Noel Anderson) (12/18/90)
The PDE6811 program development environment I mentioned in my earlier post is available through anonymous ftp at plains.nodak.edu. The file name is /keeper/pc/engin/pde_v227.zip. -- Noel W. Anderson nanders@plains.nodak.edu (Internet) Asst Prof, Computer Engineering uunet!plains!nanders (UUCP) EEE Dept, North Dakota State University nanders@plains (Bitnet)