LK14. INT6 interrupt source selection
LK15. INT7 interrupt source selection
LK16. Watchdog reset enable
LK17. User link - CPU port P1 bit 6
LK18. User link - CPU port P1 bit 7
LK19. Run mode select
Selects whether the processor runs the monitor software or the users
application code after a power-on or reset. Application code must be
set to start running at 80000H (lowest Flash ROM memory address).
Once running, code may dynamically change the mapped size of the
Flash ROM (by re-programming 386EX chip select UCS) to free more
memory space for expansion bus memory mapped peripherals.
LK20. Battery back-up from PL2
FACTORY FIT LINK - default position depends on board variant
J539 TARGET386EX
2192-08270-000-000
Section 3. Links and Options
Page 14
LK18
Function
CPU port P1 bit 6 reads as 1
CPU port P1 bit 6 reads as 0
Omit
+Fit
LK19
Function
Run application starting at memory address 80000H
Run monitor software
Omit
+Fit
LK20
Function
STEbus variant - VSTBY from PL1
SBC variant - VSTBY from PL2 pin 1
Omit
Fit
LK14
Function
DPR mailbox interrupt [NOT SBC VARIANTS]
PC/104 IRQ6
A
+B
LK16
Function
Watchdog reset disabled
Watchdog timeout generates CPU reset
A
+B
LK17
Function
CPU port P1 bit 7 reads as 1
CPU port P1 bit 7 reads as 0
Omit
+Fit
LK15
Function
STEbus TFRERR*/bus timeout interrupt [NOT SBC VARIANTS]
PC/104 IRQ15
A
+B
All manuals and user guides at all-guides.com
