Freescale Semiconductor MC68HC908MR16 Datasheet page 262

Development Support
Description
Operand
Data Returned
Opcode
A sequence of IREAD or IWRITE commands can access a block of memory sequentially over the full
64-Kbyte memory map.
Description
Operand
Data Returned
Opcode
Description
Operand
Data Returned
Opcode
262
Table 18-6. IWRITE (Indexed Write) Command
Write to last address accessed + 1
Single data byte
None
$19
Command Sequence
FROM HOST
IWRITE IWRITE
ECHO
Table 18-7. READSP (Read Stack Pointer) Command
Reads stack pointer
None
Returns incremented stack pointer value (SP + 1) in high-byte:low-byte order
$0C
Command Sequence
FROM HOST
READSP READSP
ECHO
Table 18-8. RUN (Run User Program) Command
Executes PULH and RTI instructions
None
None
$28
Command Sequence
FROM HOST
RUN
ECHO
MC68HC908MR32 • MC68HC908MR16 Data Sheet, Rev. 6.1
DATA DATA
SP SP
HIGH LOW
RETURN
RUN
Freescale Semiconductor