Motorola MC68HC908AB32 User Manual

Monitor ROM (MON)
Functional Description
MC68HC908AB32 — Rev. 1.0 Technical Data
MOTOROLA Monitor ROM (MON) 163
10.4.5 Commands
The monitor ROM uses these commands:
• READ, read memory
• WRITE, write memory
• IREAD, indexed read
• IWRITE, indexed write
• READSP, read stack pointer
• RUN, run user program
A sequence of IREAD or IWRITE commands can access a block of
memory sequentially over the full 64k-byte memory map.
Table 10-3. READ (Read Memory) Command
Description Read byte from memory
Operand Specifies 2-byte address in high byte:low byte order
Data
Returned
Returns contents of specified address
Opcode $4A
Command Sequence
READ
READ
ECHO
SENT TO
MONITOR
ADDRESS
HIGH
ADDRESS
HIGH
ADDRESS
LOW
DATA
RETURN
ADDRESS
LOW

Motorola MC68HC908AB32 Specifications

General

Brand	Motorola
Model	MC68HC908AB32
Category	Controller
Language	English