Freescale Semiconductor, Inc.
Development Support
Background Debug Mode
TTAGO — Trace, Tag, Go Field
Table 18-5. TTAGO Decoding
Table 18-6TTAGO Value Table 18-7Instruction
00
01
10
11
—
GO
TRACE1
TAGGO
REGN — Register/Next Field
Indicates which register is being affected by a command. In the case
of a READ_NEXT or WRITE_NEXT command, index register X is
pre-incriminated by 2 and the word pointed to by X is then read or
written.
Table 18-8. REGN Decoding
REGN Value
000
Instruction
—
001
—
010
READ/WRITE NEXT
011
PC
D
100
101
X
110
Y
111
SP
MC68HC912DG128 — Rev 3.0
Technical Data
Development Support
For More Information On This Product,
Go to: www.freescale.com
FREESCALE [ Freescale ]
