Led, Jumpers And External Reset - Technologic Systems TS-5700 User Manual

TS-5700 User's Manual

14 LED, Jumpers and External Reset

Jumper
Automatic CMOS - CMOS memory is reset every time the system boots, IDE0 and IDE2 Comact Flash are
JP1
automatically detected and configured in the BIOS Configuration menu.
JP2 Enable Serial Console - Default to COM2. (unless JP6 installed)
JP3 Write Enable Drive A - Remove this jumper to write protect Flash drive A
JP4 Fast Console - Console is set to 115K baud. (defaults to 9600 baud)
JP5 User Jumper - Read using BIOS call or directly in I/O space. (see appendix D & E)
JP6 Console on COM1 - (requires JP2 installed to enable console)
The TS-5700 has an LED available for user software. The user LED may be used for diagnostics, status
messages, and simple output. When power is first supplied to the TS-5700, the user LED is immediately turned
on under hardware control. Once the processor begins execution, the LED is turned off, then flashed on and off
again briefly. After boot, this LED can be used for user applications. The state of the LED is complemented by
any activity to the Compact Flash card. (accesses to the CF causes the LED to flicker)
The status of all jumpers except JP3, can be read at I/O location 77 (See Table 12).
BIOS interrupt functions can be used to interface software with the user LED and option jumpers. Please
Appendix E for further details and the utility CD for example code.
The LED can be also accessed at I/O location 77h bit 0. A Logic "1" is LED on condition.
The CF activity signal is exclusive ORed with the control bit at I/O location 77h. This causes the LED to always
flicker when there is access to the CF card.
The DIO pin 12 is connected in parallel with the on-board power reset chip.
DIO pin 12 low will perform a 'cold' boot.
Technologic Systems
Table 14 Jumper Listing
Function
24
http://embeddedARM.com/
See Section 6 for details. Pulling
see
5/2009