Freescale Semiconductor, Inc.
Monitor ROM (MON)
Table 13-5. IREAD (Indexed Read) Command
Description
Operand
Read next 2 bytes in memory from last address accessed
Specifies 2-byte address in high byte:low byte order
Returns contents of next two addresses
$1A
Data Returned
Opcode
Command Sequence
SENT TO
MONITOR
IREAD
IREAD
DATA
DATA
RESULT
ECHO
Table 13-6. IWRITE (Indexed Write) Command
Description
Write to last address accessed + 1
Operand
Specifies single data byte
Data Returned
Opcode
None
$19
Command Sequence
SENT TO
MONITOR
IWRITE
IWRITE
DATA
DATA
ECHO
Table 13-7. READSP (Read Stack Pointer) Command
Description
Operand
Reads stack pointer
None
Data Returned
Opcode
Returns stack pointer in high byte:low byte order
$0C
Command Sequence
SENT TO
MONITOR
READSP
READSP
SP HIGH
SP LOW
RESULT
ECHO
Technical Data
MC68HC908AS60 — Rev. 1.0
Monitor ROM (MON)
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