CPC-2347 Series PCI Bus 486 Mini Biscuit PC with VGA/LAN User’s Manual
Copyright notice This document is copyrighted, October 2000. All rights are reserved. The original manufacturer reserves the right to make improvements to the products described in this manual at any time without notice. No part of this manual may be reproduced, copied, translated or transmitted in any form or by any means without the prior written permission of the original manufacturer. Information provided in this manual is intended to be accurate and reliable.
Product warranty Advantech warrants to you, the original purchaser, that each of its products will be free from defects in materials and workmanship for one year from the date of purchase. This warranty does not apply to any products that have been repaired or altered by persons other than repair personnel authorized by Advantech, or which have been subject to misuse, abuse, accident or improper installation. Advantech assumes no liability under the terms of this warranty as a consequence of such events.
Packing list Before installing your board, ensure that the following materials have been received: • 1 CPC-2347 all-in-one single board computer • 1 CD-ROM including Ethernet utility programs, and SVGA utility programs and drivers for Windows 3.1/95/98/NT • 1 warranty certificate • This user's manual If any of these items are missing or damaged, contact your distributor or sales representative immediately.
Contents Chapter 1 General Information ................................ 1 1.1 Introduction ........................................................... 2 1.2 1.3 Specifications ............................................................... 3 1.2.1 Mechanical and environmental .............................. 4 Board layout: dimensions .......................................... 5 Chapter 2 Installation ................................................. 7 2.1 2.2 2.3 2.4 Jumpers and connectors ...............
3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 3.10 3.11 3.12 3.13 General information .................................................. 36 Starting Award BIOS setup ..................................... 36 Standard CMOS features ......................................... 37 Advanced BIOS features ......................................... 38 Advanced chipset features ...................................... 42 Integrated peripherals.............................................. 43 Power management setup ...............
Appendix A System Assignments ........................... 69 A.1 A.2 A.3 A.4 System I/O ports ....................................................... 70 DMA channel assignments ...................................... 71 Interrupt assignments .............................................. 71 1st MB memory map ................................................ 72 Appendix B Programming the Watchdog Timer .... 73 B.1 Programming the watchdog timer ..........................
Tables Table 2-1: Jumpers and connectors ......................................................... 8 Table 2-2: Clear CMOS (J1) .................................................................... 12 Table 2-3: PCI/IDE/FDD/LPT port connector (CN5) ................................ 14 Table 2-4: PCI bus - CN5 cross reference table (side A) ....................... 16 Table 2-5: PCI Rounting table ................................................................. 20 Table 2-6: IDE hard drive connector ..........
Figures Figure Figure Figure Figure Figure Figure Figure Figure Figure 2-1: Board layout: jumper/connector locations .............................. 9 2-2: Damping resistor .................................................................. 22 3-1: Main menu ............................................................................ 36 3-2: Standard CMOS setup screen .............................................. 37 3-3: BIOS features setup screen .................................................
CHAPTER 1 General Information This chapter provides background information for the CPC-2347.
1.1 Introduction Advantech's new Card-PC, the CPC-2347, a truly an all-in-one 486 processor-based single board computer comes equipped with 32M DRAM , an SVGA interface which supports CRT monitor with up to 4MB display memory, a 10/100 base-T Ethernet interface and a Compact Flash solid state disk socket. In addition, it is equipped with two RS-232 serial ports.
1.2 Specifications • CPU: 486-66MHZ • BIOS: 256KB FLASH BIOS • Super I/O Chipset: Winbond W83977F • RAM memory: 32MB EDO RAM on board. • Solid state disk: Support one CompactFlash card as an emulated HDD • PCI/IDE/FDD/Parallel port (144 pins SODIM socket): -I/O expansion: PCI bus. -GPIO -CF LED signal -Ethernet LED signals -Enhanced IDE hard disk drive interface: Support up to two hard disk drives. BIOS auto-detect.
• 10/100 Base T Ethernet interface: -controller: RTL-8139, 10Mbps/100Mbps • Serial ports: Two RS232 Serial ports • Keyboard & PS2 mouse: supports standard PC/AT keyboard and PS/2 mouse • Power connector: 4 pins 3.5" FDD power connector. 1.2.1 Mechanical and environmental Power supply voltage: +5V (4.75V to 5.25V) Max. Power requirements: +5V @ 1.6A Operating temperature: 32 to 140 F (0 to 60C) Board Size: 68mm x 100mm Weight: 0.
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CHAPTER 2 I N S T A L L A T I O N This chapter explains the setup procedures of CPC-2347 hardware, including instructions on setting jumpers and connecting peripherals, switches and indicators. Be sure to read all safety precautions before you begin the installation procedure.
2.1 Jumpers and connectors On-board connectors link to external devices such as hard disk drives, keyboards, floppy drives, and so on. In addition, the board has jumpers for configuring your board for specific applications. The table below lists the function of each of the board’s jumpers and connectors. Later sections in this chapter give detailed information on each jumper setting, and instructions for connecting external devices to your card.
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2.3 10 Safety precautions Warning! Always completely disconnect the power cord from your chassis whenever you are working on it. Do not make connections while the power is on because sensitive electronic components can be damaged by the sudden rush of power. Only experienced electronics personnel should open the PC chassis. Caution! Always ground yourself to remove any static charge before touching the CPU card. Modern electronic devices are very sensitive to static electric charges.
2.4 Setting jumpers You may configure your card to match the needs of your application by setting jumpers. A jumper is a metal bridge used to close an electric circuit. It consists of two metal pins and a small metal clip (often protected by a plastic cover) that slides over the pins to connect them. To "close" a jumper, you connect the pins with the clip. To "open” a jumper, you remove the clip. Sometimes a jumper will have three pins, labeled 1, 2 and 3.
2.4.1 Clear CMOS (J1) This jumper is used to erase CMOS data and reset system BIOS information. The procedure for clearing CMOS is: 1. Turn off the system. 2. Short pin 2 and pin 3. 3. Turn on the system. The CMOS is now cleared. 4. Turn off the system. Short pin 1 and pin 2. 5. Turn on the system. The BIOS is now reset to its default setting. Table 2-2: Clear CMOS (J1) Function Protect* Clear CMOS 1-2 Closed Open 2-3 Open Closed * default setting 2.
2.6 PCI/IDE/floppy drive/parallel port (CN5) The CPC-2347 provides a +5 V PCI bus, one IDE channel (support two IDE devices), one parallel interface and one floppy interface (support two floppy drives). All these are provided via a 144-pin SODIMM gold finger (CN5), which can be plugged into a DODIMM socket on the user's system board. Users can choose suitable positions on their system board for their HDD, FDD or parallel connectors.
Table 2-3: PCI/IDE/FDD/LPT port connector (CN5) Pin 1 2 3 4 5 6 7 8 9 10 11 14 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 Signal Bus Pin TRDY# PCI 73 AD[29] PCI 74 AD[31] PCI 75 AD[26] PCI 76 AD[27] PCI 77 C/BE3# PCI 78 STOP# PCI 79 AD[17] PCI 80 C/BE1# PCI 81 AD[14] PCI 82 CF1 CompactFlash™83 LED LED VCC POWER 84 VCC POWER 85 GND POWER 86 PCI_LOCK# PCI 87 AD[4] PCI 88 AD[3] PCI 89 AD[11] PCI 90 AD[19] PCI 91 AD[21] PCI 92 AD[7] PCI 93 AD[23] PCI 94 AD[0] PCI 95 VCC POWER 96 VCC
36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 SIOR# IDE LA17 IDE LA18 IDE VCC POWER VCC POWER VCC POWER VCC POWER SA_DD2 IDE SA_DD6 IDE SA_DD4 IDE SA_DD10 IDE SA_DD8 IDE SA_DD14 IDE SA_DD12 ISA SA_DD11 ISA SA_DD13 ISA GND GND GND GND GND IOCHRDY IDE GND GND GND PSTIN RESET SWITCH IRRXH FIR ERRPRT IRTX IR IRRX IR STBPRT PTD0 PRT PTD2 PRT GND PTD4 PRT PE PRT PTD7 PRT 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 1
2.6.1 PCI bus Table 2-4: PCI bus - CN5 cross reference table (side A) PCI bus Pin A1 A2 A3 A4 A5 A6 A7 A8 A9 A10 A11 A12 A13 A14 A15 A16 A17 A18 A19 A20 A21 A22 A23 A24 A25 A26 A27 A28 A29 A30 A31 16 Signal TRST 12 V TMS TDI 5V INTA# INTC# 5V RSVD1 5V RSVD3 GND GND RSVD4 RST# 5V GNT# GND RSVD6 AD30 3.3 V AD28 AD26 GND AD24 IDSEL# 3.3 V AD22 AD20 GND AD18 CPC-2347 User's Manual CN5 Pin 87 31 75 76 4 77 93 91 90 Signal 8.2 Kilo ohm pull LOW 8.2 Kilo ohm pull HIGH 8.
A32 A33 A34 A35 A36 A37 A38 A39 A40 A41 A42 A43 A44 A45 A46 A47 A48 A49 A50 A51 A52 A53 A54 A55 A56 A57 A58 A59 A60 A61 A62 AD16 3.3 V FRAME# GND TRDY# GND STOP# 3.3 V SDONE SBO# GND PAR AD15 3.3 V AD13 AD11 GND AD9 C/BE0# 3.3 V AD6 AD4 GND AD2 AD0 5V REQ64# 5V 5V 89 100 1 7 73 98 82 18 92 81 27 16 26 23 - AD16 FRAME# TRDY# STOP# 8.2 Kilo ohm PULL HIGH 8.2 Kilo ohm PULL HIGH PAR AD15 AD13 AD11 AD9 C/BE0# AD6 AD4 AD2 AD0 8.
PCI bus (Side B) Pin Signal B1 -12V B2 TCK B3 GND B4 TDO B5 5V B6 5V B7 INTB# B8 INTD# B9 PRSNT1# B10 RSVD2 B11 PRSNT2# B12 GND B13 GND B14 RSVD5 B15 GND B16 CLK B17 GND B18 REQ# B19 5V B20 AD31 B21 AD29 B22 GND B23 AD27 B24 AD25 B25 3.3 V B26 C/BE3# B27 AD23 B28 GND B29 AD21 B30 AD19 B31 3.3 V 18 CPC-2347 User's Manual Pin 3 2 5 78 6 22 20 19 CN5 Signal NOTE 1 NOTE 1 0.1 uF cap. PULL LOW 0.1 uF cap.
B32 B33 B34 B35 B36 B37 B38 B39 B40 AD17 C/BE2# GND IRDY# 3.3 V DEVSEL# GND LOCK# PERR# 8 80 79 74 15 - B41 B42 B43 B44 B45 B46 B47 B48 B49 B50 B51 B52 B53 B54 B55 B56 B57 B58 B59 B60 3.3 V SERR# 3.3 V C/BE1# AD14 GND AD12 AD10 GND AD8 AD7 3.3 V AD5 AD3 GND AD1 5V ACK64# 29 9 10 28 97 94 21 99 17 88 - B61 B62 5V 5V - AD17 C/BE2# IRDY# DEVSEL# PCI_LOCK# 8.2 Kilo ohm PULL HIGH SERR# C/BE1# AD14 AD12 AD10 AD8 AD7 AD5 AD3 AD1 8.
Table 2-5: PCI Rounting table INT_A IDSEL REQ# GNT# CLK PCI Slot 2 PCI_INIT1 AD29 PCI_REQ2# PCI_GNT#2 PCICLK2 PCI Slot 3 PCI_INIT2 AD30 PCI_REQ1# PCI_GNT#1 PC2CLK3 2.6.2 IDE interface Users can attach two IDE devices to the IDE channel, one drive must be set as the master and another as the slave. You may do this by setting the jumpers on the drives. Refer to the documentation that came with your drive for more information. A jumper diagram usually appears on the top side of a hard disk drive.
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TO HDD TO PCI- Figure 2-2: Damping resistor 22 CPC-2347 User's Manual
2.6.4 Floppy drive Users can attach up to two floppy disk drives to the CPC-2347 via a SODIMM socket. The CPC-2347 supports any combination of 5.25" (360 KB / 1.2 MB) and/or 3.5" (720 KB / 1.44/2.88 MB) drives. The following table lists the pin assignments for the floppy disk connector: Table 2-7: Floppy drive connector FDD connctr.
2.6.5 Parallel port The parallel port is normally used to connect the CPU card to a printer through a DB25 connector. The CPC-2347 includes an onboard parallel port, accessed through a SO. DIMM golden finger. The parallel port is designated as LPT1 and can be disabled or changed to LPT2 or LPT3 in the BIOS setup manual.
2.7 VGA/LAN/serial ports/keyboard/ mouse (CN2) The CPC-2347 provides a VGA interface, a 10/100 Base-T Ethernet, two RS-232 serial ports, one keyboard and one PS2 mouse through a 40-pins FPC connector (CN4). Users can design their FPC cable for connecting CPC-2347's FPC connector to the user's system board. Users can choose suitable positions to layout VGA, LAN, COM port, Keyboard and mouse connector on user's system board.
2.7.1 VGA interface The VGA connector is a 15-pin D-SUB connector. Users can follow a transfer table to layout these VGA signals to a standard 15-pin D-SUB connector.
2.7.2 Ethernet configuration The CPC-2347 is equipped with a high performance 32-bit PCI-bus Fast Ethernet interface that are fully compliant with IEEE 802.3u 10/100Base-T specifications. Ethernet connector is a RJ-45 jack. User can follow a transfer table to connect Ethernet signals to a standard RJ-45 connector. Table 2-11: Ethernet configuration RJ-45 Pin 1 3 5 7 Signal TD+ RD+ NC NC CN2 Pin 36 39 - Signal TPT+ TPR+ - RJ-45 Pin 2 4 6 8 Signal TD NC RDNC CN2 Pin 35 38 - Signal TPTTPR- 2.7.
Table 2-12: PS/2 keyboard connector PS/2 Keyboard Pin Signal 1 KB_Data 2 NC 3 GND CN2 Pin Signal 31 KBDT 34 GND PS/2 Keyboard Pin Signal 4 Vcc 5 KBCLK 6 NC CN2 Pin 29 32 - Signal KBVCC KBCK - CN2 Pin 29 33 - Signal KBVCC MSCK - Table 2-13: PS/2 mouse connector PS/2 Mouse Pin Signal 1 MDATA 2 NC 3 GND CN2 Pin Signal 30 MSDT 34 GND PS/2 Mouse Pin Signal 4 Vcc 5 MCLK 6 NC 2.7.4 Serial ports The CPC-2347 offers two serial ports: COM1 and COM2, both in RS- 232.
Table 2-14: Serial port default settings Port COM1 COM2 Address 3F8, 2F8, 3E8, 2E8 3F8, 2F8, 3E8, 2E8 Default 3F8/IRQ4 2F8/IRQ3 The following table shows the pin assignments for the card's RS-232 port: 5 1 6 9 Table 2-15: COM1 RS-232 serial port connector RS-232 Pin Signal 1 DCD 2 RX 3 TX 4 DTR 5 GND CN2 Pin 18 19 17 16 37 Signal CD1 RX1 TX1 DTR1 GND RS-232 Pin Signal 6 DSR 7 RTS 8 CTS 9 RI CN2 Pin 20 15 14 13 Signal DSR1 RTS1 CTS1 RI1 Table 2-16: COM2 RS-232 serial port connector RS-232 Pin Sig
2.8 Power supply connector (CN1) In single board computer without carrier applications, user may connect a power directly to the CPC-2347 board through CN1.
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CHAPTER 3 Award BIOS Setup This chapter describes how to set the BIOS configuration data.
3.1 General information Award BIOS ROM has a built-in setup program that allows users to modify the basic system configuration. This type of information is stored in battery-backed-up RAM so that it retains the setup information when the power is turned off. 3.2 Starting Award BIOS setup As POST executes, the following appears: Hit if you want to run SETUP Press to run AWARDBIOS setup.
3.3 Standard CMOS features Choose the "Standard CMOS Features" option from the main menu, and the screen below will be displayed. This standard setup menu allows users to configure system components such as date, time, hard disk drive, floppy drive, display, and memory.
3.4 Advanced BIOS features The screen below appears when choosing the "Advanced BIOS Features " item from the main menu. It allows the user to configure the CPC-2347 according to his particular requirements. Below are some major items that are provided in the Advanced BIOS FEATURES setup screen. A quick booting function is provided for your convenience. Simply enable the Quick Power On Self Test item to save yourself valuable time.
Quick Power On Self Test This option speeds up the Power-On Self Test (POST) conducted as soon as the computer is turned on. When enabled, BIOS shortens or skips some of the items during the test. When disabled, the computer conducts normal POST procedures. Boot Sequence This function determines the sequence in which the computer will search the drives for the disk operating system (i.e. DOS).
Boot Up NumLock Status The default is On. On Keypad boots up to number keys. Off Keypad boots up to arrow keys. Gate A20 Option Normal: The A20 signal is controlled by the keyboard controller or chipset hardware. Fast (Default): The A20 signal is controlled by Port 92 or the chipset specific method. Typematic Rate Setting The typematic rate determines the characters per second accepted by the computer. The Typematic Rate setting enables or disables the typematic rate.
OS Select for DRAM > 64 MB This setting is under the OS/2 system. Video BIOS Shadow This determines whether video BIOS will be copied to RAM, which is optional according to the chipset design. When enabled, Video BIOS Shadow increases the video speed. C8000-CBFFF Shadow / CC000-CFFFF Shadow These determine whether optional ROM will be copied to RAM in blocks of 16 KB. Enabled Optional shadow is enabled. Disabled Optional shadow is disabled.
3.5 Advanced chipset features By choosing the "Advanced CHIPSET FEATURES" option from the Main menu, the screen below will be displayed. This sample screen contains the manufacturer default values for the CPC-2347. This section allows you to configure the system based on the specific features of the installed chipset. This chipset manages bus speeds and access to system memory resources, such as DRAM and the external cache.
3.6 Integrated peripherals Figure 3-5: Integrated peripherals Onboard FDC Controller This option enables the floppy drive controller on the CPC-2347. The settings are Enabled, or Disabled. Onboard Serial Port 1/2 This option enables serial port 1/2 on the board and specifies the base I/O port address for serial port 1~2. The settings are Disabled, 3F8h/IRQ4, 3E8h/IRQ4, 2E8h/IRQ3, and 2F8h/IRQ3.
Onboard Parallel Port This option enables the parallel port on the CPC-2347 and specifies the parallel port's base I/O address. The settings are Disabled, 378/ IRQ7, 3BC/IRQ7 and FDD. The default setting is 378/IRQ7. The CPC-2347's floppy interface and parallel port share the same pin assignment. When "On board Parallel port" is setting to FDD, floppy drive will be enabled and printer port will be disabled.
3.7 Power management setup The power management setup controls the CPU card's "green" features. The following screen shows the manufacturer defaults. Figure 3-6: Power management setup screen Power Management Power management lets you set up your computer to save electricity when it is not inactive use by putting the system into progressively greater power saving modes.
Standby mode This sets the period of system inactivity after which the system goes into Standby mode, the intermediate power saving state. The settings range from 2 minutes to 16 minutes and can be set manually when power management is Enable. The default setting is Disabled. When the system goes into power saving mode, power management will skip to the next mode in the sequence if this is disabled. 3.
IRQ resources These fields indicate whether or not the displayed IRQ for each field is being used by a legacy (non-PnP card). Two options are available: PCI/ISA PnP or Legacy. The first option, the default setting, indicates that the displayed IRQ is not used to determine if an ISA card is using that IRQ. If you install a legacy ISA card that requires a unique IRQ, you must set the field for that IRQ to "Legacy". Say for example that you install a legacy ISA card that requires IRQ10.
3.10 Load optimized defaults "Load Optimized Defaults" loads the values required by the system for maximum performance. 3.11 Password setting To change the password: 1. Choose the "SET PASSWORD" option from the main menu and press . The screen will display the following message: Enter Password: Press . 2. If the CMOS is good or if this option has been used to change the default password, the user is asked for the password stored in the CMOS.
3.13 Exit without saving Selecting this option and pressing lets you exit the setup program without recording any new values or changing old ones.
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CHAPTER 4 Software Configuration This chapter details the software configuration information. It shows you how to configure the card to match your application requirements.
4.1 Ethernet software configuration The CPC-2347 on-board Ethernet interface supports all major network operating systems. To configure the medium type, to view the current configuration, or to run diagnostics, do the following: 1. Power the CPC-2347 on. Ensure that the RSET8139.EXE file is located in the working drive. 2. At the prompt type RSET8139.EXE and press . The Ethernet configuration program will then be displayed. 3.
CHAPTER 5 PCI Bus Ethernet Interface This chapter provides information on Ethernet configuration. • Introduction • Installation of Ethernet driver for - MS-DOS and Windows 3.
5.1 Introduction The CPC-2347 is equipped with a high performance 32-bit Ethernet chipset which is fully compliant with IEEE 802.3 100 Mbps CSMA/ CD standards. It is supported by major network operating systems. It is also both 100Base-T and 10Base-T compatible. The medium type can be configured via the RSET8139.exe program included on the utility disk. 5.2 Installation of Ethernet driver Before installing the Ethernet driver, note the procedures below.
5.2.2 Installation for Windows 95 1. a. Select "Start", "Settings", "Control Panel". b. Double click "Network". 2. a. Click "Add" and prepare to install network functions. 3. a. Select the "Adapter" item to add the Ethernet card. 4. a. Click "Have Disk" to install the driver.
a. Insert the disc labeled "RTL 8139A Driver #2" into drive A:. b. Fill in the correct path. c. Click "OK". 5. 6. a. Choose the "Realtek" item. b. Click "OK". 7. a. Make sure the configurations of relative items are set correctly. b. Click "OK" to reboot.
5.2.3 Installation for Windows NT 1. a. Select "Start", "Settings", "Control Panel". b. Double click "Network". 2. a. Choose the "Adapters" label. b. Click the "Add" button. 3. a. Press "Have Disk". 4. a. Type "D:". b. Press "OK".
a. Insert the disc labeled "RTL 8139A Driver #2" into drive A:. b. Fill in the correct path. c. Click "OK". 5. 6. a. Choose the "Realtek" item. b. Click "OK". 7. a. Make sure the configurations of relative items are set correctly. b. Click "OK" to reboot.
5.3 Further information Realtek website: www.realtek.com.tw Advantech websites: www.advantech.com www.advantech.com.
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CHAPTER 6 Board Diagrams This chapter shows diagrams of the CPC-2347's carrier board. It includes specifications for the FPC cable, SODIMM socket, and mechanical diagrams.
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6.4 FPC/FFC cable layout: (CN2; 40-pin FPC connector) 6.5 Height limits (side view) *1: At least 3.0 mm height is needed between the carrier board's surface and the bottom of CPC-2347.Therefore, SODIMM socket must meet this requirement. Some suggested suppliers are listed below.
6.6 Component suppliers Location Model number Supplier CN5 SODIMM so cke t C-390112 AMP CN2 40-pin FPC connector IL-FPR-40S-HF JA E CN3 50-pin PCI connector 245077050112861 E LC O * Advantech's part number for the CN5 SODIMM socket is 1651500002.
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APPENDIX A System Assignments This appendix contains information of a detailed or specialized nature.
A.1 System I/O ports Table A-1: System I/O ports Addr.
A.2 DMA channel assignments Table A-2: DMA channel assignments Channel 0 1 2 3 4 5 6 7 A.
A.4 1st MB memory map Table A-4: 1st MB memory map Addr.
APPENDIX B Programming the Watchdog Timer The CPC-2347 is equipped with a watchdog timer that resets the CPU or generates an interrupt if processing comes to a standstill for any reason. This feature ensures system reliability in industrial standalone or unmanned environments.
B.1 Programming the watchdog timer The default configuration of the timer is enabled with system reset. To enable the watchdog timer, you must make a program which writes 1 to I/O port address 443 (hex) at regular intervals. The first time your program reads the port, it enables the watchdog timer. After that, your program must write 1 to port 443 at time intervals of less than 1.6 seconds. Otherwise, the watchdog timer will activate and reset the CPU.
The following example shows how you might program the watchdog timer in BASIC: 10 REM Watchdog timer example program 20 X=Out &H443,1 REM watchdog 30 GOSUB 1000 REM complete 40 X=Out &H443,1 REM 50 GOSUB 2000 REM complete 60 X=Out &H443,0 REM 70 END 1000 REM Enable and refresh the Task #1, takes 1 second to Refresh the watchdog Task #2, takes 1 second to Disable the watchdog Subroutine #1, takes 1 second to complete . . .
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