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Table 18-3. READ (Read Memory) Command
Description Read byte from memory
Operand 2-byte address in high-byte:low-byte order
Data Returned Returns contents of specified address
Opcode $4A
Command Sequence
SENT TO MONITOR
ADDRESS ADDRESS ADDRESS
HIGH HIGH LOW
ADDRESS
LOW
READ
READ
DATA
ECHO
RETURN
Table 18-4. WRITE (Write Memory) Command
Description Write byte to memory
Operand 2-byte address in high-byte:low-byte order; low byte followed by data byte
Data Returned None
Opcode $49
Command Sequence
FROM HOST
ADDRESS ADDRESS ADDRESS ADDRESS
LOW
DATA
DATA
WRITE
WRITE
HIGH
HIGH
LOW
ECHO
Table 18-5. IREAD (Indexed Read) Command
Description Read next 2 bytes in memory from last address accessed
Operand 2-byte address in high byte:low byte order
Data Returned Returns contents of next two addresses
Opcode $1A
Command Sequence
FROM HOST
IREAD
IREAD
DATA
DATA
ECHO
RETURN
Data Sheet
284
MC68HC908MR32 • MC68HC908MR16 — Rev. 6.0
MOTOROLA
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FREESCALE [ Freescale ]
