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MC908AB32CFUE Datasheet, PDF (163/392 Pages) Freescale Semiconductor, Inc – Microcontrollers | |||
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Monitor ROM (MON)
10.4.5 Commands
The monitor ROM uses these commands:
⢠READ, read memory
⢠WRITE, write memory
⢠IREAD, indexed read
⢠IWRITE, indexed write
⢠READSP, read stack pointer
⢠RUN, run user program
A sequence of IREAD or IWRITE commands can access a block of
memory sequentially over the full 64k-byte memory map.
Table 10-3. READ (Read Memory) Command
Description Read byte from memory
Operand Specifies 2-byte address in high byte:low byte order
Data
Returned
Returns contents of specified address
Opcode $4A
Command Sequence
SENT TO
MONITOR
READ
ECHO
READ
ADDRESS ADDRESS ADDRESS
HIGH
HIGH
LOW
ADDRESS
LOW
DATA
RETURN
MC68HC908AB32 â Rev. 1.1
Freescale Semiconductor
Monitor ROM (MON)
Technical Data
163
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