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CHAPTER 8 RESETS AND STARTUP
■ Flowchart Internal Vector Mode
USDM set?
n
Scan UART
Connected ?
y
MFSB or
SFSB set ?
unsecured
secured
Disable part of
serial commands
Command
Loop
206
Figure 8.4-4 Boot ROM sequence in Internal Vector Mode
Internal Vector
Mode
y
Main Reset ?
n
y
n
y
FBVAM set ?
fixed
n
look-up
Read Boot Vector
from 0xFFFFDC
Set Boot Vector
to 0xDF0080
MB96300 Super Series Hardware Manual
not protected
(M/S)FMWPAM
set ?
write
protected
Write FMWC
configuration
MFSB or
unsecured
SFSB set ?
secured
n
y
Jump to Start
Address
BDMAM
enabled ?
y
Init BDM
Autostart
enabled ?
n
Init FDM
Indicate Break
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