EB298/D EB298 MC68HC711E9 MC68HC11 MC68HC11E9FN1 MC68HC711E9FS DB-25 RS232C

by EB298/D Motorola Semiconductor Engineering Bulletin EB298 Programming the BUFFALO Monitor into an MC68HC711E9 By Janet M.

Order this document by EB298/D EB298/D Motorola Semiconductor Engineering Bulletin EB298 EB298 Programming the BUFFALO Monitor into an MC68HC711E9 MC68HC711E9 By Janet M. Snyder Austin, Texas Introduction If communication with the EVBU (evaluation) board cannot be established using a terminal emulation program such as Procomm or Kermit, the information in this engineering bulletin is for you. The probable reason for communication failure is that the EPROM in the MC68HC711E9 MC68HC711E9 has not been programmed with the BUFFALO monitor. © Motorola, Inc., 1999 EB298 EB298 Engineering Bulletin Programming the BUFFALO Monitor Use these steps to determine if the BUFFALO monitor is present: · Look at the top of the MC68HC11 MC68HC11 chip on your EVBU board. The chip has the BUFFALO monitor programmed into it if MC68HC11E9FN1 MC68HC11E9FN1 is printed on the top. · The MC68HC11 MC68HC11 chip may not have the BUFFALO monitor programmed into it if: The part has an exposed window, or The part has a blue sticker that actually covers the window, or The part has MC68HC711E9FS MC68HC711E9FS printed on top. · The EVBU board comes with the BUFFALO monitor programmed into an MC68HC11E9FN1 MC68HC11E9FN1. The EVBU that is sold as a student experimental board was formerly shipped with a blank MC68HC711E9FS MC68HC711E9FS. However, since 1992, these boards have been shipped with the MC68HC11E9FN1 MC68HC11E9FN1 (with the BUFFALO monitor) and a blank MC68HC711E9FS MC68HC711E9FS included in the box. · If the EVBU does not have the BUFFALO monitor programmed into the MC68HC11 MC68HC11, use an IBM PC compatible running PCbug11 to communicate with the board. The PC must either have a color monitor, or, if it uses a monochrome monitor, be able to accept the DOS command MODE CO80. Once communication with the EVBU is established using PCbug11, programming the BUFFALO monitor into the MC68HC711E9FS MC68HC711E9FS can be accomplished. Both PCbug11 and BUFFALO monitor come on disks supplied with the EVBU board. These programs can also be found on the Freeware Data System. If the version of PCbug11 shipped on the disks is not at least 3.24a, then download the newest version available. EB298 EB298 2 MOTOROLA Engineering Bulletin Programming the BUFFALO Monitor · Remove the jumper from J7 and place it across J3. This grounds the MODB pin. J4 has a trace across it on the bottom of the board which grounds MODA. This should be intact. If it is not, put a jumper at J4. This configuration places the MC68HC11 MC68HC11 in special bootstrap mode upon reset. · Connect the EVBU to your PC serial port with a DB-25 DB-25 connector. The port can be either COM1 or COM2. The cable to use is "straight through," RS232C RS232C, DB25 to DB25. If you have a DB9 connector on your PC end, the pinout is described in this table: DB9-F DB25-M DB25-M Signal 1 8 DCD 2 3 RXD 3 2 TXD 4 20 DTR 5 7 GND 6 6 DSR 7 4 RTS 8 5 CTS 9 - NO CONNECT The EVBU needs +5 volts DC going to the power connector and +12 volts DC going through a 100-ohm resistor connected to P4, pin 18 (this is the programming voltage pin, VPP). The +5 volt supply must be turned on before +12 volts. EB298 EB298 MOTOROLA 3 Engineering Bulletin · Start PCbug11 by typing PCBUG11 PCBUG11 E port = 1 If you are using COM 2, use port = 2 instead. If your screen freezes and doesn't finish bringing up PCbug11, reset the computer and type mode C080 Then try to restart PCbug11. If you have made the proper connections and have a high quality cable, you should quickly get a PCbug11 command prompt. If you do receive a Comms fault error, check your cable and board connections. Most PCbug11 communications problems can be traced to poorly made cables or bad board connections. Barring these problems, the only way a Comms fault error can occur is if you are using a computer equivalent to a 386DX 386DX running faster than 25 MHz. If this is the case, when you get the PCbug11 command prompt, type CONTROL TIMEOUT 10000 Press the reset button on the EVBU. Then type RESTART If you have made the proper connections and are using a high quality fabricated cable, then you should quickly receive the PCbug11 command prompt without any error messages. These additional steps are required because PCbug11's timing routines depend on processor speed and thus will run faster and time out sooner on more powerful machines. Once you have received the PCbug11 command prompt, type CONTROL BASE HEX This tells PCbug11 that your inputs will be in hexadecimal. When using hexadecimal, you do not have to add the $ to inputs. EB298 EB298 4 MOTOROLA Engineering Bulletin Programming the BUFFALO Monitor · Now type EEPROM B600 B7FF EPROM D000 FFFF LOADS (path) BUF34 BUF34.S19 Where path is wherever the file BUF34 BUF34.S19 is located. This could be floppy drive A. Therefore, type LOADS A:BUF34 BUF34.S19 If BUF34 BUF34.S19 was located on the hard drive under a directory called junk, type LOADS C:\JUNK\BUF34 BUF34.S19 Programming takes approximately five minutes. After programming is finished, turn off all power to the board. · Remove the VPP wire from connector P4 pin 18. · Make the jumper off of J3 and put it on J7. · Apply the +5 volts DC power to the board again. · To quit PCbug11, type QUIT Answer yes, when the program asks if you are sure. · Start your standard terminal program, for example, Procomm, set up for 9600 baud, no parity, eight data bits, and one stop bit (commonly written as 9600,N,8,1). · Push the board reset button, and you should get the BUFFALO 3.4 prompt on the screen. See the M68HC11EVBU M68HC11EVBU Universal Evaluation Board User's Manual, Motorola document order number MC68HC11EVBU/AD2 MC68HC11EVBU/AD2, when using the board with the BUFFALO monitor. EB298 EB298 MOTOROLA 5 Engineering Bulletin EB298 EB298 6 MOTOROLA Engineering Bulletin Programming the BUFFALO Monitor EB298 EB298 MOTOROLA 7 N O N - D I S C L O S U R E A G R E E M E N T R E Q U I R E D Engineering Bulletin Motorola reserves the right to make changes without further notice to any products herein. Motorola makes no warranty, representation or guarantee regarding the suitability of its products for any particular purpose, nor does Motorola assume any liability arising out of the application or use of any product or circuit, and specifically disclaims any and all liability, including without limitation consequential or incidental damages. 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Customer Focus Center, 1-800-521-6274 JAPAN: Motorola Japan Ltd.: SPD, Strategic Planning Office, 141, 4-32-1 Nishi-Gotanda, Shinagawa-ku, Tokyo, Japan, 03-5487-8488 ASIA/PACIFIC: Motorola Semiconductors H.K. Ltd., Silicon Harbour Centre, 2 Dai King Street, Tai Po Industrial Estate, Tai Po, New Territories, Hong Kong, 852-26629298 MfaxTM, Motorola Fax Back System: RMFAX0@email.sps.mot.com; http://sps.motorola.com/mfax/; TOUCHTONE, 1-602-244-6609; US and Canada ONLY, 1-800-774-1848 HOME PAGE: http://motorola.com/sps/ Mfax is a trademark of Motorola, Inc. © Motorola, Inc., 1999 EB298/D EB298/D