MC68HC912DG128 Datasheet, PDF (383/452 Pages) Motorola, Inc – Microcontrollers

Freescale Semiconductor, Inc.
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Instruction Tagging
Table 18-12. Tag Pin Function
TAGHI
1
1
0
0
TAGLO
1
0
1
0
Tag
no tag
low byte
high byte
both bytes
The tag follows program information as it advances through the queue.
When a tagged instruction reaches the head of the queue, the CPU
enters active background debugging mode rather than execute the
instruction.
MC68HC912DG128 — Rev 3.0
MOTOROLA
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Technical Data
383