Motorola MC68HC908AB32 - WRITE (Write Memory) Command; IREAD (Indexed Read) Command

Monitor ROM (MON)
Technical Data MC68HC908AB32 — Rev. 1.0
164 Monitor ROM (MON) MOTOROLA
Table 10-4. WRITE (Write Memory) Command
Description Write byte to memory
Operand
Specifics 2-byte address in high byte:low byte order; low byte
followed by data byte
Data
Returned
None
Opcode $49
Command Sequence
Table 10-5. IREAD (Indexed Read) Command
Description Read next 2 bytes in memory from last address accessed
Operand Specifies 2-byte address in high byte:low byte order
Data
Returned
Returns contents of next two addresses
Opcode $1A
Command Sequence
WRITE
WRITE
ECHO
SENT TO
MONITOR
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
ADDRESS
LOW
DATA DATA
IREAD
IREAD
ECHO
SENT TO
MONITOR
DATA
RETURN
DATA