Motorola MC68340 User Manual page 222

Integrated processor with dma

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Command Sequence:

Operand Data:

The 32-bit operand data is the starting location of the patch routine, which is the initial

PC upon exiting BDM.

Result Data:

As an example, consider the following code segment. It outputs a character from the

MC68340 serial module channel A.

BDM and the CALL command can be used to patch the code as follows:

1. Breakpoint user program at CHKSTAT

2. Enter BDM

3. Execute CALL command to MISSING

5. Execute MISSING code

6. Return to user program

5.6.2.8.14 Reset Peripherals (RST). RST asserts RESET for 512 clock cycles. The CPU

is not reset by this command. This command is synonymous with the CPU RESET

instruction.

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Move serial status to D0

Loop until condition true

Transmit character

Check for TxEMP flag