MC68HC908GZ8 Datasheet, PDF (158/344 Pages) Motorola, Inc – Microcontrollers

Monitor ROM (MON)
Table 15-6. IWRITE (Indexed Write) Command
Description
Operand
Data Returned
Opcode
Write to last address accessed + 1
Single data byte
None
$19
Command Sequence
FROM HOST
IWRITE IWRITE
DATA
DATA
ECHO
A sequence of IREAD or IWRITE commands can access a block of memory
sequentially over the full 64-Kbyte memory map.
Table 15-7. READSP (Read Stack Pointer) Command
Description
Operand
Data Returned
Opcode
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
SP
HIGH
SP
LOW
RETURN
Table 15-8. RUN (Run User Program) Command
Description
Operand
Data Returned
Opcode
Executes PULH and RTI instructions
None
None
$28
Command Sequence
FROM HOST
RUN
RUN
ECHO
Data Sheet
158
Monitor ROM (MON)
MC68HC908GZ8
Freescale Semiconductor