Equipment Required; External Equipment Requirements - Motorola M68HC11EVBU User Manual

There are two ways to assemble user code: use the line assembler in the BUFFALO monitor
program or assemble code on a host computer and then download the code to the EVBU user
RAM via an Motorola S-records. The monitor program is then used to debug the assembled user
code.
Overall debugging/evaluation control of the EVBU is provided by the monitor program via
terminal interaction. RS-232C terminal I/O port interface circuitry provides communication and
data transfer operations between the EVBU and external terminal/host computer devices. The
terminal I/O port is fixed at 9600 baud.
The EVBU has a wire-wrap area for MCU custom interfacing. The wire-wrap hole pattern lets
you install most standard dual-in-line package (DIP) device wire-wrap sockets, strip sockets,
headers, and connectors. Wire-wrap components can be installed on the topside of the EVBU
printed circuit board (PCB), and wire wrapping can be performed on the bottom side of the PCB.
MCU interfacing is accomplished via the MCU I/O port connector to the wire-wrap area.
EVBU operation requires a user-supplied +5 Vdc power supply and an RS-232C compatible
terminal. You must use an RS-232C compatible host computer to download Motorola S-records
via EVBU terminal I/O port. Download the BUFFALO monitor commands.
The Motorola S-record format was devised for the purpose of encoding programs or data files in
a printable format for transportation between computer systems. Refer to Appendix A for
additional S-record information.
1.5

EQUIPMENT REQUIRED

Table 1-2 lists the external equipment requirements for EVBU operation.
+5 Vdc power supply
Terminal (RS-232C compatible)
Host computer (RS-232C compatible)
Terminal/host computer – EVBU RS-232C cable assembly
1. Refer to Chapter 2 for details.
–
2. Optional
M68HC11EVBU/D
Table 1-2. External Equipment Requirements
External Equipment
(1)
not required for basic operation.
(2)
(1)
GENERAL INFORMATION
1-3