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3.3.2
Personal Computer – BDM Connection
Personal computer communication with the MEVB requires background debug
mode (BDM) hardware. Connect your BDM hardware between your computer's
I/O port and the BDM header on the MPFB (MPFB connector J6). The drawing
below shows signal assignments for connector J6. For additional information
about your BDM software/hardware, including debugging and assembly
information, see the appropriate user's manual.
3.4 SOFTWARE INSTALLATION AND MCU INITIALIZATION
After you have set up the MEVB hardware you must install the software on your
computer. Follow the installation procedure in the appropriate software operations
manual.
The MCU must be initialized before the MEVB will function. The following is
one possible initialization for the MPB376. You may adapt this example to your
debugger. This initialization enables the maximum system clock frequency and
disables the software watchdog while enabling the bus monitor. CSBOOT is set to
zero-wait state and the block size set to 64K starting at $00000. The SRAM is
enabled to reside at $10000 with the stack pointer initialized at $103FE and the
instruction pointer (IP) initialized to $00200 (PK=0, IP=200).
Load your program at address $00200.
M68MPB16Z1UM/D
J6
•
•
DS
1
•
•
GND
3
•
•
GND
5
•
•
RESET
7
•
•
+5 Vdc
9
MEVB QUICK START GUIDE
2
BERR*
4
BKPT*
6
FREEZE
8
DSI
10
DSO
3-5
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