MC68HC908LJ24 Datasheet, PDF (175/464 Pages) Motorola, Inc – Microcontrollers

Monitor ROM (MON)
Functional Description
Table 10-7. IWRITE (Indexed Write) Command
Description
Operand
Data
Returned
Opcode
Write to last address accessed + 1
Single data byte
None
$19
FROM
HOST
Command Sequence
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 10-8. 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
SP
HIGH
LOW
RETURN
MC68HC908LJ24/LK24 — Rev. 2.1
Freescale Semiconductor
Monitor ROM (MON)
Data Sheet
175