Motorola M68CPU32BUG Manuel d'utilisateur télécharger pdf (Page 29)

MC68332TUT/D MOTOROLA

Press the page up key on the PC keyboard. A small window will open and ask for the character protocol.

Select ASCII. Then, when prompted to, type in the name of the S-record file.

Figure 18 Terminal/PC Cable Diagram for PFB P9

The file transfer is done when the beeper sounds and the underline cursor flashes. Press <CR> twice to

return to the CPU32Bug prompt. See the

CPU32Bug Debug Monitor User’s Manual

or the

M68332BCC Us-

er’s Manual

for more information about debugging commands.

3.2.1.2 Using the EVK in Background Debug Mode

Both the PFB and BCC have a BDM connector. On older versions of the EVK, both the PFB and BCC BDM

connectors have eight pins instead of ten pins. On newer versions of the EVK, the BCC has a 10-pin con-

nector, while the PFB still has an 8-pin connector. The 8-pin connector is shown in Figure 19, and the 10-

pin connector is shown in Figure 17.

The change from the 8-pin connector to the10-pin BDM connector was made primarily to accommodate the

BERR

signal. This signal is required to terminate bus cycles that would otherwise prevent the MCU from

entering BDM (a bus cycle is unterminated if no bus termination signal, e.g. DSACK[0:1] or BERR is assert-

ed externally or internally). The functions of the connector pins are described in Table 4.

When using a board with the 8-pin connector, connect pins 3 through10 of the ICD32 cable to pins 1 through

8 of the 8-pin connector. Apply power to the board, and invoke the ICD32 software. Since CSBOOT selects

the EPROM on the BCC that contains the monitor program, the first address in the code window should be

either 60090 or e0090, depending upon whether the EPROM contains M68332Bug or M68CPU32Bug

(CPU32Bug is the newer version). Simply type “go” at the command prompt and then press any key to re-

gain the prompt. At this point, basic system initialization (chip-select circuits, software watchdog, and sys-

tem clock) is complete, and user code can be loaded into RAM. Alternatively, the system can be booted

from memory in the U2 and U4 sockets on the PFB by changing the jumper settings on both the PFB and

BCC. See the EVK manual for instructions.

332TUT SERIAL CONN

RXD

TXD

GND

IBM-PC SERIAL PORT

(DB-25)

EVALUATION BOARD

(DB-9)

1 2 ... 24 25 26 27 28 29 30 31 32 33 34 ... 55 56

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Motorola M68CPU32BUG Manuel d'utilisateur Page 29