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Chapter 12: USB

Description

Universal Serial Bus (USB) is a hardware interface for peripherals such as the
keyboard, mouse, joystick, scanner, printer, and telephony devices. The 5266 has
four USB 2.0 channels. USB 2.0 has a maximum transfer rate of 480 Mbits/sec. All
channels are Universal HCI compliant.

The USB ports are accessed via a standard dual USB port at J1 (USB 1 and 2), or
a 10-pin, 0.1” pitch connector at J5 (USB 3 and 4). Peripherals can be plugged in
and unplugged while power is applied to the system (see Caution below).

Octagon provides a cable that routes the USB 3 and 4 signals to standard USB
connectors (Octagon p/n 6288). This cable consists of two five-pin connectors that
mate with the J5 connector on one end, and two USB connectors at the other end.
Ensure that the arrow on the five-pin connectors is matched to the pin 1 end of J5.
Any USB device can then plug into either USB interface on the USB adapter cable,
or into a multi-port hub that then plugs into the USB adapter cable.

An operating system capable of utilizing the USB ports and USB devices is
required for USB operation.

Caution

USB devices are hot-swappable when a device is plugged into a
standard USB connector such as J1, as pins on the connectors
determine the order in which they make contact. Devices are not
hot-swappable when connected to a non-standard header (J5). You
can hot swap a device through the USB Adapter cable connected to
J5, or through another USB connector wired to the 10-pin header,
but you cannot hot swap at the 10-pin header itself.

USB hard drives and CD-ROMs

A USB hard drive must be assigned a drive in the BIOS Setup Basic CMOS
Configuration menu. A USB CD-ROM does not need a drive assignment. The 5266
can boot from a USB hard drive or CD-ROM. For a hard drive, select the drive
letter assigned to the hard drive for the Boot First field. For a CD-ROM, select CD-
ROM.

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Содержание 5266

Страница 1: ...5266 CPU card Reference manual Manual part 7739 rev A07 CONTACT INFORMATION Front Desk 303 430 1500 Technical Support 303 426 4521 FastHelp octagonsystems com www octagonsystems com 1 ...

Страница 2: ...nveys no license under any patent or other right and makes no representations that the circuits are free from patent infringement Octagon makes no representation or warranty that such applications will be suitable for the use specified without further testing or modification Octagon Systems Corporation general policy does not recommend the use of its products in life support applications where the...

Страница 3: ... an expensive display Multiple component failures The chance of a random component failure is very rare since the average MTBF of an Octagon card is greater than 11 years In a 7 year study Octagon has never found a single case where multiple IC failures were not caused by misuse or accident It is very probable that multiple component failures indicate that they were user induced Testing dead cards...

Страница 4: ...n Guide version 1 1 section 3 3 5 This assures that all the circuitry on the CPU control card sequences properly and avoids system lockup Excessive signal lead lengths Another source of failure that was identified years ago at Octagon was excessive lead lengths on digital inputs Long leads act as an antenna to pick up noise They can also act as unterminated transmission lines When 5V is switched o...

Страница 5: ... reliability 14 User available SEEPROM 14 Watchdog timer added for safety 14 Hardware reset 14 5 Volt input power 15 Rugged environmental operation 15 Size 15 5266 major software features 16 Diagnostic software verifies system integrity automatically 16 General Software BIOS 16 Octagon built in INT 17 BIOS extensions 16 Boot sequence 16 Chapter 2 Quick start 17 Component diagrams connectors switch...

Страница 6: ...ng a bootable CompactFlash 56 SDRAM 56 Battery backup for real time calendar clock 57 Installing an AT battery 57 Chapter 7 External drives 58 Description 58 Setup configurations for hard drives 58 Hard disk controller 58 Master slave designation for IDE devices 58 Installing a hard drive 60 Chapter 8 Bit programmable digital I O 61 Description 61 BIOS Setup configuration for digital I O 61 Interf...

Страница 7: ... EEPROM 87 Read a single byte from the serial EEPROM 87 Write a single byte to the serial EEPROM 87 Return serial EEPROM size 88 Chapter 16 System switches user switches BIOS update and LEDs 90 System switches 90 System switch 90 Video switch 90 User switch 90 INT17 calls to read user switches 91 BIOS programming using REFLASH EXE 92 LEDs 92 Chapter 17 CPU clock and ISA bus interrupt routing 93 CP...

Страница 8: ... clock 105 Operating systems 105 Power requirements 105 Environmental specifications 105 Size 105 Weight 105 Excessive Thermal Stress 105 Mating connectors 106 Maps 107 Switch settings 109 Jumper Settings 110 Connector pin outs 111 Appendix B Software utilities 118 Introduction 118 Support commands 118 REFLASH EXE 119 RESET COM 119 Appendix C Accessories 120 Warranty 121 Limitations on warranty 12...

Страница 9: ...board and power supply 28 Figure 2 12 Using a passive ISA backplane 30 Figure 2 13 Installing an operating system 33 Figure 4 1 COM ports 46 Figure 4 2 VTC 20F cable and null modem adapter 47 Figure 4 3 Typical RS 422 four wire interface circuit 49 Figure 4 4 Typical RS 485 two wire half duplex interface circuit 50 Figure 5 1 Monitor and keyboard as console 52 Figure 5 2 The 5266 and a serial cons...

Страница 10: ...terrupt routing 94 Table 18 1 POST port 80 codes 98 Table 18 2 BIOS beep counts 101 Table A 1 5266 mating connectors 106 Table A 2 5266 I O map 107 Table A 3 5266 interrupt map 108 Table A 4 5266 memory map 108 Table A 5 CompactFlash UDMA RS485 termination switch Switch2 109 Table A 6 System configuration switches Switch 500 109 Table A 7 Digital I O pulled high pulled low jumper W1 110 Table A 8 ...

Страница 11: ...tion Section 1 provides installation and programming instructions startup options and system configuration program examples The following chapters are included Chapter 1 Overview Chapter 2 Quick start Chapter 3 Setup programs 11 ...

Страница 12: ...speed of 8 33 MHz and a PCI bus speed of 33 MHz SDRAM The 5266 supports a single PC2700 or PC3200 DDR SO DIMM module up to 1 GB On board flash On board is a PLCC boot flash that contains the BIOS CompactFlash socket The CompactFlash socket accepts a Type I or Type II 3V CompactFlash card The CompactFlash appears as an IDE device to the system The IDE controller supports two IDE devices If a Compac...

Страница 13: ... the USB connectors on the two port USB cable or through another USB connector wired to the 10 pin header but you cannot hot swap at the 10 pin header itself The dual stacked port is hot swappable The 5266 will boot from a USB drive Keyboard mouse The 5266 does not have a PS 2 or AT style connector for keyboard or mouse The USB ports support legacy DOS keyboard mouse Digital I O and LPT The 24 dig...

Страница 14: ...tery backed CMOS RAM If the battery fails or is replaced during routine maintenance this information is lost Without a keyboard and monitor in embedded applications time consuming re initialization is required The 5266 stores the Setup information in Serial EEPROM User available SEEPROM The SEEPROM has 720 bytes available to the user Software routines to use this available memory come with the 526...

Страница 15: ...z with 1 GB DDR memory Rugged environmental operation Operating temperature 40 to 70 C Nonoperating temperature 55 to 95 C nonoperating Relative humidity 5 to 95 noncondensing Shock 40g 3 axis Vibration 5g 3 axis The 5266 will operate up to 85 C for brief periods Octagon Systems does not recommend sustained operation over 70 C Size 124 46 mm x 114 3 mm 4 9 in x 4 5 in Micro PC form factor 15 ...

Страница 16: ... test fixtures See the Troubleshooting chapter for a listing of tests and failures and their descriptions General Software BIOS The 5266 has a General Software BIOS with Octagon BIOS extensions The BIOS extensions support the INT17 functions Octagon built in INT 17 BIOS extensions The 5266 has built in INT 17 BIOS extensions which allow easy access to watchdog timer functions serial EEPROM digital...

Страница 17: ...not accelerators or coprocessors Component diagrams connectors switches and cables Figures 2 1 and 2 2 show the connectors and switches and their locations on the 5266 Figures 2 3 and 2 4 show the dimensions of the 5266 in inches and millimeters The sections immediately following those figures describe the connectors and switches and some cables that you might require WARNING The 5266 contains sta...

Страница 18: ...Figure 2 1 5266 component diagram top 18 ...

Страница 19: ...Figure 2 2 5266 component diagram bottom 19 ...

Страница 20: ...Figure 2 3 5266 dimensions inches 20 ...

Страница 21: ...Figure 2 4 5266 dimensions mm 21 ...

Страница 22: ... page 105 For information on custom cables see the following section Table 2 1 5266 connector functions Connector Function W2 PC speaker J1 USB 1 2 J2 Ethernet J3 PC battery J4 COM 1 2 J5 USB 3 4 J6 VGA video J7 Digital I O LPT J8 Hard drive IDE J9 Audio J10 ISA connector J11 Power J500 CompactFlash J501 Flat panel XU500 SO DIMM Table 2 2 5266 switch jumper functions Switch Function SW1 Reset SW2 ...

Страница 23: ...s for field wiring 2 mm VGA 12 Cable Provides a standard 15 pin VGA interface Two port USB Cable Converts the 10 pin header for USB3 4 into two standard USB connectors Caution USB devices are hot swappable when a device is plugged into a standard USB connector as pins on the connectors determine the order in which they make contact Devices are not hot swappable when connected to a non standard hea...

Страница 24: ...ms are Windows XP Linux and DOS 2 mm VGA 12 video cable 6392 USB keyboard VGA monitor 5266 Utilities zip file see page 118 1 Refer to Figures 2 1 and 2 2 on pages 18 and 19 for the location of various connectors and jumpers before installing the 5266 2 Attach the Octagon power module to the card cage following the instructions supplied with the power module 3 Make sure power to the card cage is OF...

Страница 25: ...and USB keyboard USB Keyboard VGA Monitor VGA 12 cable Dot indicates pin 1 5266 CPU Card Figure 2 6 Edge connector orientation Micro PC Passive Back plane A31 B31 A1 B1 card edge pins A31 B31 card edge pins A1 B1 Micro PC card 25 ...

Страница 26: ... by Octagon Systems are Windows XP Linux and DOS 2 mm VGA 12 video cable 6392 USB keyboard VGA monitor 5266 Utilities zip file see page 118 Qty 4 4 40 screws 4 40 threaded hex standoffs 4 internal star lock washers 5252MB stacking kit 3590 required for stacking only 1 Refer to figures 2 1 and 2 2 on pages 18 and 19 for the location of various connectors and jumpers before installing the 5266 Refer...

Страница 27: ...g the voltage at J11 of the 5266 or at the power connector of the 5252MB stacking kit reversing 5V and ground or applying a voltage greater than 5V will destroy the card and void the warranty Refer to figure 2 11 for the following 4 Connect the VGA 12 cable into J6 Ensure that pin 1 of the cable is connected to pin 1 of the connector 5 Make sure power to the power supply is OFF Connect the power s...

Страница 28: ... 2 10 Power connector J11 diagram J11 Power header J11 Figure 2 11 5266 VGA monitor USB keyboard and power supply 5V Gnd VGA Monitor USB Keyboard VGA 12 cable Dot indicates pin 1 5266 CPU Card Power Supply 28 ...

Страница 29: ...and jumpers before installing the 5266 2 Connect the power supply 5V and ground wires to the power connector of the unterminated backplane Refer to the Power Supply Requirements section page 30 WARNING Miswiring the voltage to the backplane reversing 5V and ground or applying a voltage greater than 5V will destroy the card and void the warranty 3 Make sure power to the backplane is OFF 4 Insert th...

Страница 30: ... AWG wires The typical current requirement for the 5266 is listed in the Technical Data appendix The user should consider factors such as the power cable conductor gauge number and length of conductors mating connectors and the power requirements of external devices such as hard drives USB drives displays mouse and keyboard It is important that a quality power supply be used with the 5266 that has...

Страница 31: ... J6 Ensure that pin 1 of the cable is connected to pin 1 of the connector 2 If it is an IDE CD ROM configure it as either a master or a slave see note below Connect the USB keyboard to J1 a VGA monitor to the VGA 12 video cable and the CD ROM drive to J8 or USB J1 3 If using a hard drive configure it as a master or slave device and install it on the IDE cable connected to J8 see note below 4 If us...

Страница 32: ...ion PnP Configuration Shadow Configuration Reset CMOS to last known values Reset CMOS to factory defaults Write to CMOS and Exit Exit without changing CMOS Tab to select Esc to continue no save www gensw com Note Your display message may be slightly different 7 In the BIOS Setup Basic CMOS Configuration menu change the boot sequence to CD ROM drive first Designate drive c as IDE 0 Pri Master or ID...

Страница 33: ...m USB Keyboard VGA Monitor VGA 12 cable Dot indicates pin 1 5266 CPU Card Power Supply CompactFlash installed into CompactFlash socket on back of board CD ROM and or Hard Drive IDE ribbon cable for two devices or one device directly into J8 33 ...

Страница 34: ...l force the Setup to revert to the factory programmed defaults shown in the following menus This allows you to boot with a known set of parameters If you want to use the default settings for future boots you must enter Setup and Save for the default values to be stored in CMOS Note The Setup defaults might vary slightly from those shown in the following menus depending on the BIOS revision on your...

Страница 35: ...ll rights reserved Information Browser Basic CMOS Configuration Features Configuration Custom Configuration PnP Configuration Shadow Configuration Reset CMOS to last known values Reset CMOS to factory defaults Write to CMOS and Exit Exit without changing CMOS CR Tab to select Esc to continue no save www gensw com Information Browser menu The Information Browser provides information specific to the...

Страница 36: ...ections allow you to assign the various drives installed to a designated alphabetic drive Note If using a floppy drive assign a drive to A before assigning a drive to B do not assign a drive to Drive B without using Drive A Do not skip drive C if using flash hard drives the first flash hard drive should be drive C If using an IDE CD ROM DO NOT assign a drive letter to its IDE port the operating sy...

Страница 37: ...us boot selections fail This option requires System Management Mode to be enabled see Features Configuration screen ATA DRIVE ASSIGNMENT These selections allow you to specify the type of devices for IDE 0 and IDE1 Note that the 5266 only supports two IDE devices total CompactFlash and one IDE drive or two IDE drives The available options are Not Installed User Type AUTOCONFIG PHYSICAL AUTOCONFIG L...

Страница 38: ...t of extended memory on the card Features Configuration menu The Features Configuration menu allows you to set some of the system features Default values are shown in the menu System BIOS Setup Feature Configuration C 2004 General Software Inc All rights reserved POST Memory Manager Disabled System Management Mode Enabled System Management BIOS Enabled Graphical Audio POST Enabled Quick Boot Disab...

Страница 39: ...abled When enabled UDMA is available on the primary IDE interface CompactFlash devices do not support UDMA Note UltraDMA modes are not supported by the 5266 These modes require an 80 conductor cable and there is no adapter available for the 44 pin 2mm IDE connector used on the 5266 However UDMA 33 support can be enabled in BIOS Console Redirection Auto redirect When set to Auto the console will be...

Страница 40: ...Frequency 500 MHz PCI bus Frequency 33 MHz Memory Frequency 333 MHz DDR LX Rev Number C1 CAS Latency 2 5 CLKS CS5536 Rev Number B1 CR Tab to select or PgUp PgDn to modify Esc to return to main menu PCI INT A Assignment Auto IRQ 5 IRQ 10 IRQ 11 PCI INT C Assignment Auto IRQ 5 IRQ 10 IRQ 11 COM 1 UART 3F8 IRQ 4 Enabled disabled This enables COM 1 If the COM 1 port is not used you can disable this to...

Страница 41: ... IDE cable The 5266 has a 44 wire cable which also provides power for hard drives Because of the pitch of the 44 in connector there is no known 80 wire to 44 wire cable available This should remain set at 40 wire USB device controller Disabled enabled USB Port 4 function Host device disabled WATCHDOG STATE Disabled enabled This enables or disables the watchdog timer with a default timeout of five ...

Страница 42: ...Disabled Assign DMA5 to PnP Enabled Assign DMA2 to PnP Disabled Assign DMA6 to PnP Enabled Assign DMA3 to PnP Enabled Assign DMA7 to PnP Enabled CR Tab to select or PgUp PgDn to modify Esc to return to main menu Shadow Cache Configuration menu The Shadow Cache Configuration menu enables shadowing and selects the address where it will be stored Shadowing is disabled by selecting None under Shadowin...

Страница 43: ... them Selecting Yes will implement the item Selecting No will return you to the Utility menu Those four selections are Reset CMOS to last known values This item restores the values that were in CMOS at boot without exiting Setup Reset CMOS to factory defaults Write to CMOS and Exit Exit without changing CMOS 43 ...

Страница 44: ...The following chapters are included Chapter 4 Serial ports Chapter 5 Console devices Chapter 6 CompactFlash SDRAM and battery backup Chapter 7 External drives Chapter 8 Bit programmable digital I O Chapter 9 LPT parallel port Chapter 10 CRTs and TFT flat panels Chapter 11 Ethernet Chapter 12 USB Chapter 13 Audio PC speaker 44 ...

Страница 45: ...ts to external serial equipment The P2 and P3 connectors on these cables are DB 9 female VTC 20F or DB 9 male VTC 20M connectors which plug directly into a 9 pin serial cable Figure 4 1 following page shows serial devices connected to the 5266 Figure 4 2 shows a null modem adapter connected to the COM1 port of a VTC 20F A null modem adapter is required when connecting a serial console Baud rate di...

Страница 46: ...terrupts can be routed so that different interrupts are used See page 93 If COM2 is used for RS 422 or RS 485 and the 5266 is at the end of the network the ports will have to be terminated Switch 2 positions 3 and 4 terminate the network The default setting is unterminated If the 5266 is at the end of the network the switch must be set to terminated Table 4 2 shows the COM pin outs for the COM por...

Страница 47: ... 14 Tx 3 15 TxD 5 15 Tx 8 16 CTS 6 16 Rx 4 17 DTR 7 17 nc 9 18 RI 8 18 nc 5 19 GND 9 19 nc 20 nc 10 20 nc Table 4 3 COM2 termination switch Switch 2 Switch 2 COM2 termination COM Port Interface Switch 2 Settings RS 422 RS 485 no termination Position 3 Off Position 4 Off COM2 RS 422 RS 485 with termination Position 3 On Position 4 On Default These switches terminate the network If the 5266 is at an...

Страница 48: ...232 interface COM2 can be configured through Setup as an 8 wire RS 232 interface You can connect up to two RS 232 serial I O devices Note that Switch 2 positions 3 and 4 must remain Off for RS 232 on COM2 COM2 as RS 422 or RS 485 networks COM2 can also be configured in Setup as RS 422 or RS 485 RS 422 and RS 485 use differential signaling to communicate between the devices on a network Differentia...

Страница 49: ...ircuit The RTS signal is used to control the transmitter and receiver in RS 422 mode The RTS signal is controlled by the Modem Control Register bit 1 MCR 1 which is offset 0x04 from the UART base address Writing MCR 1 to 0 default state sets RTS to an inactive state RTS logic high which ENABLES both the RS 422 Transmitter and Receiver Writing MCR 1 to 1 sets RTS to an active state RTS logic low wh...

Страница 50: ... terminated The 5266 optionally terminates with a 100 ohm resistor Refer to table 4 2 on page 47 Figure 4 4 shows a typical RS 485 network Note that for 2 wire RS 485 networks the transmit and receive pairs must be connected together external to the 5266 TXD tied to RXD TXD tied to RXD The RTS signal is used to control the transmitter and receiver in RS 485 mode The RTS signal is controlled by the...

Страница 51: ... allows input but is not required Monitor and keyboard console To use a monitor and keyboard as the console you will need the following equipment or equivalent 5266 2 mm VGA 12 video cable 6392 USB style keyboard VGA monitor WARNING The video connector is keyed but some connectors are not keyed and can be plugged in incorrectly Ensure that pin 1 of the cable is connected to pin 1 of the connector ...

Страница 52: ...Figure 5 1 Monitor and keyboard as console USB Keyboard VGA Monitor VGA 12 cable Dot indicates pin 1 5266 CPU Card Power Supply 52 ...

Страница 53: ...er serial port USB style keyboard optional 18 Refer to Figure 2 1 on page for the location of various connectors and switches before installing the 5266 1 Set the V video switch Switch 500 position 2 to Off An alternative way to redirect the video to a serial console is to hit the carriage return Enter key on the host keyboard This will redirect the video regardless of switch settings or BIOS sett...

Страница 54: ...66 card to the system defaults which includes 115200 baud rate Note Function keys entered on the host computer do not transmit across a serial console Hot key access to serial console In some instances you might want to redirect the video to a serial console without having reconfigured Setup or setting the V switch to Off If you have connected a serial console to COM1 pressing the Enter key on the...

Страница 55: ...device is connected it must be configured as a master If two devices are connected one must be configured as a master and one as a slave Table 6 1 shows the settings for SW2 Note Octagon Systems only recommends Industrial Grade CompactFlash NAND technology that implements ECC error code correction and wear level technology Table 6 1 CompactFlash UDMA RS485 termination switch SW2 Position Name On d...

Страница 56: ...ctFlash Reboot from the external device 3 Use the appropriate commands utility to create partitions on the CompactFlash Refer to your operating system manual for the appropriate parameters You might also have to refresh the MBR Master Boot Record 4 Reboot using the external device 5 Format the CompactFlash Follow the on screen instructions for your operating system to format the CompactFlash 6 Cop...

Страница 57: ...clock The battery is installed at J3 Installing an AT battery 1 Power off the 5266 2 Install the 3 6V AT clock battery at J3 Table 6 2 Battery connector J17 battery connector Pin Pin Name 1 Battery 2 Key 3 nc 4 Battery Note See Appendix A Mating connectors for mating information on the battery connector 57 ...

Страница 58: ...ded with an OS and when it is used to boot Hard disk controller The 5266 supports two 16 bit IDE devices The CompactFlash is an IDE device If a CompactFlash is used only one additional IDE device can be connected through J8 Standard IDE devices such as hard drives and CD ROM drives are interfaced via a 44 pin connector at J8 For those IDE devices that use a 40 pin interface use the Octagon Systems...

Страница 59: ... Keyboard VGA Monitor VGA 12 cable Dot indicates pin 1 5266 CPU Card Power Supply CompactFlash installed into CompactFlash socket on back of board CD ROM and or Hard Drive IDE ribbon cable for two devices or one device directly into J8 59 ...

Страница 60: ... The BIOS will not be able to detect an IDE device that is configured as a slave unless a master device is also installed 5 Execute the BIOS Setup program to configure your system for a hard drive You can execute this program by pressing Delete during system bootup The system steps you through the configuration Also refer to the Setup programs chapter for more information on the BIOS Setup program...

Страница 61: ...y pin number Figure 8 1 shows typical I O configurations The I O lines have the following specifications Each I O chip has 24 I O lines grouped into 3 ports of 8 bits Each bit is programmable as either 5V input or 5V output Read back state of each pin Easy to program Each line can sink and source 15 mA BIOS Setup configuration for digital I O The digital I O connector J7 is configured in the BIOS ...

Страница 62: ...s appendix for connector information for the digital I O connector Table 8 2 J7 arranged by pins digital I O connector J7 Digital I O Pin Pin Name Pin Name Pin 1 Port B bit 4 Vcc 5V 2 3 Port B bit 5 Port B bit 2 4 5 Port B bit 6 Port B bit 3 6 7 Port B bit 7 Port B bit 1 8 9 Port C bit 7 Port B bit 0 10 11 Port C bit 5 Port C bit 6 12 13 Port C bit 0 Port C bit 4 14 15 Port C bit 2 Port C bit 1 16...

Страница 63: ...Figure 8 1 Typical digital I O configuration 5266 CPU 5266 CPU MPB 8 16 or 24 Opto Rack MPB 8 16 or 24 Opto Rack CMA 26 Ribbon Cable STB 26 CMA 26 Ribbon Cable STB 26 CMA 26 Ribbon Cable 5266 CPU 63 ...

Страница 64: ...tal I O lines to an 8 16 or 24 position opto module rack One end of the CMA 26 cable plugs into the I O connector and the other plugs into an MPB 8 MPB 16 or an MPB 24 opto rack Refer to the MPB opto racks data sheet for more information You can also use a CMA 26 cable to connect the I O port to an STB 26 terminal board and then to the opto rack The STB 26 has two 26 pin connectors one of which co...

Страница 65: ... position Port C 0 Bit 0 13 1 Bit 1 16 2 Bit 2 15 Bit 3 17 3 MPB 08 4 Bit 4 14 5 Bit 5 11 6 Bit 6 12 7 Bit 7 9 Port A 8 Bit 0 19 9 Bit 1 21 10 Bit 2 23 Bit 3 25 11 MPB 16 12 Bit 4 24 13 Bit 5 22 14 Bit 6 20 15 Bit 7 18 Port B 16 Bit 0 10 17 Bit 1 8 18 Bit 2 4 Bit 3 6 19 MPB 24 20 Bit 4 1 21 Bit 5 3 22 Bit 6 5 23 Bit 7 7 65 ...

Страница 66: ... at ports A B or C can be configured individually as inputs or outputs Figure 8 2 Organization of banks Port addressing Ports A B C and the control register are addressable The base I O address is set at 1050h Ports A B C and the control register are addressable with reference to the base address J7 Digital I O 8 8 8 Port C Port B Port A Control Register Base 1050h Base 1 1051h Base 2 1052h Base 3...

Страница 67: ...s are inputs or outputs by writing a control command to the control register of the I O bank When a line is configured as an output it can sink a maximum of 15 mA at 0 4V or can source 15 mA at 2 4V On powerup and software or hardware reset all digital I O lines are reset as inputs Programming the I O Follow these steps to program the I O chip 1 Configure the I O port bit directions either as inpu...

Страница 68: ...Write a bit pattern to appear at the outputs of the desired I O port when the I O chip is put in operation mode all input bits are unaffected 5 Write a 3 to the control register base register 3 This places the I O chip back into operation mode OUT 1053h 3 control register Writing and reading from I O Writing to or reading from the desired I O port is accomplished with single program statements 1 T...

Страница 69: ... the following commands OUT 1050h FFh portA OUT 1051h FFh portB OUT 1052h FFh portC or all 0 s after OUT 1050h 0 portA OUT 1051h 0 portB OUT 1052h 0 portC I O input program examples To configure ports A and C as inputs and port B as outputs issue the following commands OUT 1053h 2 Direction Mode OUT 1050h 0 OUT 1051h FF OUT 1052h 0 OUT 1053h 3 Operation Mode To read ports A and C issue the followi...

Страница 70: ...l Data Direction Mask xxxxxxxx xxxxxxxxB direction 1 output 0 input BX Port B configuration Initial Data Direction Mask xxxxxxxx xxxxxxxxB direction 1 output 0 input 0 input CX Port C configuration Initial Data Direction Mask xxxxxxxx xxxxxxxxB direction 1 output 0 input DX ffffh AL Error code Comments This function is used to initialize the I O before normal use Programming example Inline assembl...

Страница 71: ...e for Borland C 3 1 asm mov ax 0ef01h mov di 00ffh port A no change mov bx 8000h port B bit 7 set to 0 mov cx 0202h port C bit 1 set to 0 mov dx 0ffffh int 17h Read I O Function efh Subfunction 02h Purpose To read from an I O port Calling registers AH efh AL 02h DX ffffh Return registers AL Port A data Ah Port B data BL Port C data Comments This function is used to read from the I O Programming ex...

Страница 72: ...allel port Toggle the EZIO 1050 LPT 278 field to select LPT When digital I O EZIO is selected the base address is 1050h with no interrupt LPT uses base address 278h with IRQ 7 Configuring the LPT signals The signals on connector J7 must be pulled low when using this port as LPT Jumper block W1 uses 10K ohm resistor networks to configure these lines as low See page 18 for the location of W1 Ensure ...

Страница 73: ... on the DB 25 and the 26 pin connector Cut wire 2 at the 26 pin connector This signal is 5V and must not be routed to the DB 25 Swap wires 25 and 26 The ribbon cable can then be straight connected to the 26 pin connector and the DB 25 Figure 9 1 shows a custom printer cable for J7 Table 9 1 shows how the J7 signals are routed to the DB 25 once wire 2 is clipped and wires 25 and 26 are swapped Note...

Страница 74: ...6 12 19 13 7 14 20 15 8 16 21 17 9 18 22 19 10 20 23 21 11 22 24 23 12 24 25 26 13 25 Installing a printer 1 Make sure that J7 is configured as an LPT port in BIOS Setup 2 Ensure that W1 2 3 is jumpered 3 Connect the custom cable from the LPT1 port J7 to the 25 pin connector on your printer cable 4 Connect the cable to your printer 74 ...

Страница 75: ...1600 x 1200 x 24 TFT flat panel support with resolutions up to 1024 x 768 x 18 Connecting a monitor To use a monitor the Video switch Switch 500 position 2 must be set to On This is the default configuration The 10 pin connector at J6 supports all analog CRT color or monochrome monitors The 2 mm VGA 12 cable connects to J6 and provides a DB 15 video mating connector for a CRT Refer to figure 10 1 ...

Страница 76: ...or J6 CRT Connector Pin Pin Name Pin Name Pin 1 RED GREEN 2 3 BLUE GND 4 5 5V GND 6 7 HSYNCOUT DDC SDA 8 9 DDC SCL VSYNCOUT 10 Figure 10 1 The 5266 and a VGA monitor USB Keyboard VGA Monitor VGA 12 cable Dot indicates pin 1 76 ...

Страница 77: ...appropriate settings for these fields Figure 10 2 shows a flat panel connected to the 5266 Table 10 2 shows the pinout for the J501 flat panel connector Flat panels requiring bias voltage Some flat panels require a bias voltage To determine if your flat panel requires bias voltage refer to your flat panel documentation If your flat panel requires a bias voltage refer to the manufacturer s document...

Страница 78: ... the Fields in the Custom Configuration menu are set to match your flat panel 3 Ensure your cable correctly routes the signals from J501 to your flat panel Refer to table 10 2 Connect your cable from the flat panel to the flat panel connector Refer to figure 10 2 Warning Improper wiring or connection from the flat panel to the 5266 can damage the 5266 and the flat panel Verify the flat panel cable...

Страница 79: ...3 GROUND FPLINE 4 5 FPFRAME GROUND 6 7 GROUND GROUND 8 9 R0 R1 10 11 R2 GROUND 12 13 R3 R4 14 15 R5 GROUND 16 17 GROUND GROUND 18 19 G0 G1 20 21 G2 GROUND 22 23 G3 G4 24 25 G5 GROUND 26 27 GROUND GROUND 28 29 B0 B1 30 31 B2 GROUND 32 33 B3 B4 34 35 B5 GROUND 36 37 DRDY nc 38 39 VCC 3 3 VCC 3 3 40 41 nc 79 ...

Страница 80: ... 5266 Ethernet uses twisted pair wiring cable The interface terminates at the standard 8 position RJ 45 latching jack CAUTION Use a strain relief loop when connecting to the 5266 Ethernet connector to avoid damaging the connector The Ethernet port uses IRQ11 For more information on programming the Ethernet port see the README file in the Ethernet directory of the 5266 utilities See page 118 for do...

Страница 81: ...nd of J5 Any USB device can then plug into either USB interface on the USB adapter cable or into a multi port hub that then plugs into the USB adapter cable An operating system capable of utilizing the USB ports and USB devices is required for USB operation Caution USB devices are hot swappable when a device is plugged into a standard USB connector such as J1 as pins on the connectors determine th...

Страница 82: ... speaker is implemented with the Geode CS5536 Southbridge and is accessed at connector W2 Table 13 1 shows the audio connector and table 13 2 shows the PC speaker connector Table 13 1 J9 audio connector J9 audio connector Pin Pin Name Pin Name Pin 1 Lineout_L Linein_R 2 3 Audio Ground Audio Ground 4 5 Audio Ground Audio Ground 6 7 Lineout_R Linein_L 8 Table 13 2 W2 PC speaker connector W2 PC speak...

Страница 83: ...e areas of internal control and troubleshooting The following chapters are included Chapter 14 Watchdog timer and hardware reset Chapter 15 Serial EEPROM Chapter 16 System switches user switches BIOS update and LEDs Chapter 17 CPU clock and ISA bus interrupt routing Chapter 18 Troubleshooting 83 ...

Страница 84: ...d in Setup it sets the timeout period for 300 seconds The BIOS will strobe the watchdog during the boot process and once more just before booting is finished The user s application must then begin strobing The watchdog will continue until it is disabled or power down occurs If the watchdog is enabled in Setup and your operating system cannot load up before the timer expires your system could reset...

Страница 85: ...ffh Return registers None Comments This function enables the watchdog Once the watchdog is enabled it has to be strobed at a period greater than the timeout period specified or until the watchdog is disabled Otherwise a system reset will occur Programming example Inline assembly code for Borland C 3 1 set watchdog to 10 second timeout asm mov ax 0fd01h mov bx 1 mov dx 0ffffh int 17h Strobe watchdo...

Страница 86: ... 3 1 asm mov ax 0fd03h mov dx 0ffffh int 17h Hardware reset The reset switch Switch SW1 allows you to reset the system without turning off the power This provides a more complete reset than the CTRL ALT DEL method Depressing this button pulls the circuit to ground and resets the system The RESET command accomplishes the same thing as the reset button Refer to the component diagram in the Quick sta...

Страница 87: ...Read a single byte from the serial EEPROM Function fch Subfunction 00h Purpose To read a single byte from the on board serial EEPROM Calling registers AH fch AL 00h BX Word address zero based DX ffffh User area relative address Return registers AX Word read Error code Meaning ffh Unknown error 01h Function not implemented 02h Defective serial EEPROM 03h Illegal access Comments This function reads ...

Страница 88: ...rland C 3 1 asm mov ax 0fc01h mov bx 03h Write word 3 mov cx seeData Get write data from c environment mov dx 0ffffh int 17h Return serial EEPROM size Function fch Subfunction 04h Purpose To obtain the size bytes of the on board serial EEPROM Calling registers AH fch AL 04h DX ffffh Return registers BX Size available to user 512 bytes AL Error code Error code Meaning ffh Unknown error 01h Function...

Страница 89: ...Programming example unsigned int seeUserSize Inline assembly code for Borland C 3 1 asm mov ax 0fc04h mov dx 0ffffh int 17h mov seeUserSize bx 89 ...

Страница 90: ... enable on card video Off disable on card video X reserved for future use 3 U User switch default On 4 default System switch The system switch is position 1 When this switch is On the system boots using the parameters stored in Setup When this switch is Off the system boots using the factory defaults for all parameters in Setup Note that if you must set the system switch Off to recover your system...

Страница 91: ...To read user jumper Calling Registers AH 0fbh AL 0bh DX 0ffffh Return Registers AL Jumper data bit 0 user jumper 1 1 on 0 off Carry flag set if error AL Error code Comments This function shall be used to read the user switches Programming example Inline assembly code for Borland C 3 1 unsigned char aData asm MOV AX 0fb0bh MOV DX 0ffffh INT 17h MOV aData AL if aData 1 printf U1 switch is ON n 91 ...

Страница 92: ...lity will display a progress screen and tell you when the process is done You may need to push the reset button or cycle the power on the system to boot from the updated BIOS LEDs The 5266 has three on board LEDs in addition to the LEDs on the Ethernet connector See page 18 for the location of the LEDs CR1 is a bicolor User LED The amber LED is connected to GP12 and the green LED is connected to G...

Страница 93: ...d higher ordered interrupts Caution must be used when configuring the jumper options The application software must also be aware of the interrupt that is set for the particular resource Jumper blocks W4 and W5 allow the source interrupt to be routed to the appropriate destination Table 17 1 shows the jumper settings for the ISA bus interrupts as well as the default configuration for each of the in...

Страница 94: ...us IRQ6 IRQ6 W4 7 9 Bus IRQ6 IRQ11 W4 9 10 Bus IRQ6 IRQ12 W5 1 2 Bus IRQ7 IRQ7 W5 1 3 Bus IRQ7 IRQ5 default Note Bus IRQ6 can be inadvertently routed to two interrupts This is not an acceptable configuration Table 17 2 Onboard interrupt routing Onboard interrupts Pins jumpered Source Destination W4 2 4 Serial B IRQ COM2 IRQ3 W4 3 4 Serial B IRQ COM2 IRQ10 W4 4 6 Serial B IRQ COM2 IRQ4 W4 6 8 Seria...

Страница 95: ...ons going from the J6 connector to the monitor If using a flat panel display check the following Check the power and cables going to the flat panel display Make sure that the power module has enough current capacity to power both the 5266 card and the flat panel Ensure you have entered the proper settings for your flat panel in BIOS Setup If an analog monitor is not present or is not displaying th...

Страница 96: ...d between COM1 of the VTC 20F cable and the serial port of your PC Make sure that your terminal emulator such as HyperTerminal on your PC is set up properly Refer to the Console devices chapter Refer to the HyperTerminal manual for information on setting up communication parameters After verifying the above conditions you can monitor voltage levels by connecting an oscilloscope between the TxD lin...

Страница 97: ...gulate properly Output drift up to 6 7V and or 7 8 voltage spikes have been reported If the power supply comes up slowly the sequencing of ICs on the board may be out of sync thus causing the system to lock up System locks up after power down power up If the power supply does not drain below 0 7V the CMOS components on the card will act like diodes and forward bias This is typically caused by usin...

Страница 98: ...tart KBC NOP command 0Ch Test CMOS RAM shutdown register 0Dh Check CMOS checksum OEh Initialize CMOC contents 0Fh Initialize CMOS status for date time 10h Disable DMA PICs 11h Disable Port B video display 12h Initialize board start memory detection 13h Start timer tests 14h Test 8254 T2 for speaker Port B 15h Test 8254 T1 for refresh 16h Test 8254 T0 for 18 2 Hz 17h Start memory refresh 18h Test m...

Страница 99: ... test patterns 46h Write conventional memory test patterns 47h Find low memory size from patterns 48h Find high memory size from patterns 49h Verify ROM BIOS data area again 4Ah Check for DEL pressed 4Bh Clear extended memory for soft reset 4Ch Save memory size 4Dh Cold boot Display 1st 64KB memtest 4Eh 4Fh Cold boot Test all of low memory 50h Adjust memory size for EBDA usage 51h Cold boot Test h...

Страница 100: ...OS extension at C800h 97h ROM C800h extension returned 98h Configure timer printer data 99h Configure serial port base addresses 9Ah Prepare to initialize coprocessor 9Bh Initialize numeric coprocessor 9Ch Numeric coprocessor initialized 9Dh Check KB settings 9Eh Issue keyboard ID command 9Fh KB ID flag reset 0A0h Test cache memory 0A1h Display soft errors 0A2h Set keyboard typomatic rate 0A3h Pro...

Страница 101: ...ister test failed 11 POST_BEEP_CACHE External cache test failed 12 POST_BEEP_BOARD General board initialization failed 13 POST_BEEP_LOWMEM Exhaustive low memory test failed 14 POST_BEEP_EXTMEM Exhaustive extended memory test failed 15 POST_BEEP_CMOS CMOS restart byte test failed 16 POST_BEEP_ADDRESS_LINE Address line test failed 17 POST_BEEP_DATA_LINE Data line test failed 18 POST_BEEP_INTERRUPT I...

Страница 102: ...e more information you can provide the easier it will be for Technical Support staff to help you solve the problem For additional technical assistance try the following Technical Support telephone 303 426 4521 E mail Technical Support fasthelp octagonsystems com http octagonsystems com Applications Notes via web 102 ...

Страница 103: ...rview Section 4 Appendices Section 4 contains a series of appendices which provides additional information about the 5266 Appendix A Technical data Appendix B Software utilities Appendix C Accessories 103 ...

Страница 104: ...as an EIDE device CompactFlash socket Supports Type I and Type II 3V CompactFlash devices USB 4 ports USB 2 0 compatible Serial I O Two ports one with RS 232 one with RS 232 RS 422 or RS 485 interfaces IEC1000 level 3 ESD protection specification Contact discharge 6 kV Air gap discharge 8 kV Backdrive protection 16C550 and 16C750 compatible Up to 115K baud 64 byte FIFO buffers Switch selectable te...

Страница 105: ...is ensures that all the circuitry on the 5266 sequences properly and avoids system lockup Environmental specifications Operating temperature 40 to 70 C Nonoperating temperature 55 to 95 C nonoperating Relative humidity 5 to 95 noncondensing Shock 40g 3 axis Vibration 5g 3 axis The 5266 will operate up to 85 C for brief periods Octagon Systems does not recommend sustained operation over 70 C Size 1...

Страница 106: ...746288 4 or Octagon 4866 cable J5 USB 3 4 Octagon 6288 cable J6 VGA video Molex 87568 1073 or Octagon 6392 cable J7 Digital I O LPT Amp 746288 6 J8 Hard drive IDE Amp 1 111626 0 J9 Audio Samtec SSM 108 S DV BE LC J10 ISA connector 2 x 31 pin ISA connector J11 Power Screw terminals for 22 to 14 AWG wire J500 CompactFlash Standard CompactFlash J501 Flat panel VESA standard XU500 SO DIMM PC2700 or PC...

Страница 107: ...dary IDE 01f0 01f7 Primary IDE 02f8 02ff COM 2 0320 0323 Digital I O Optional Alternate Location 0376 Reserved Secondary IDE control 03c0 03df VGA 03f6 Reserved Primary IDE control 03f8 03ff COM 1 0400 044f PMIO see subfunctions below 0408 040b ACPI timer 0410 0415 ACPI CPU throttle 0448 044F GPIO Watchdog Switches LEDs etc 0cf8 0cff PCI Config 1050 1053 Digital I O Optional Default Location ef00 ...

Страница 108: ... Table A 4 5266 memory map 5266 memory map Start Addr Hex End Addr Hex Function 00000000 0009dfff System Ram 0009e000 0009ffff Reserved 000a0000 000bffff Video RAM area 000c8000 000cdfff Video ROM virtual shadow 000ce000 000dffff SMM memory 000E0000 000fffff BIOS ROM area shadow 00100000 1MB Top of SDRAM following System RAM Top of SDRAM following size varies Top of SDRAM following ACPI Tables Sto...

Страница 109: ...Unterminated 4 RS485 RX Terminated Unterminated default Table A 6 System configuration switches Switch 500 Switch 500 System Configuration Label Description Position S System parameters option switch 1 On enable User Setup options Off enable BIOS Setup default V Video switch 2 On enable on card video Off disable on card video X reserved for future use 3 U User switch default On 4 default 109 ...

Страница 110: ...W4 5 7 Bus IRQ4 IRQ11 W5 1 3 Bus IRQ5 IRQ7 W5 3 4 Bus IRQ5 IRQ5 W5 3 5 Bus IRQ5 IRQ14 W5 4 6 Bus IRQ6 IRQ5 W5 5 6 Bus IRQ6 IRQ14 W5 6 8 Bus IRQ6 IRQ6 W4 7 9 Bus IRQ6 IRQ11 W4 9 10 Bus IRQ6 IRQ12 W5 1 2 Bus IRQ7 IRQ7 W5 1 3 Bus IRQ7 IRQ5 default Note Bus IRQ6 can be inadvertently routed to two interrupts This is not an acceptable configuration Table A 9 Onboard interrupt routing W4 Onboard interrup...

Страница 111: ... port with standard USB pin out Table A 12 J2 Ethernet connector J2 is an RJ 45 port with standard Ethernet pin out Table A 13 J3 Battery connector J17 Battery connector Pin Pin Name 1 Battery 2 Key 3 Battery 4 Battery Table A 14 J4 COM1 and COM2 connector COM1 COM2 Pin RS 232 signal RS 232 signal Pin 1 DCD DCD 11 2 DSR DSR 12 3 RxD RxD 13 4 RTS RTS 14 5 TxD TxD 15 6 CTS CTS 16 7 DTR DTR 17 8 RI R...

Страница 112: ...20 nc Table A 16 J5 USB3 4 connector J5 USB3 4 connector Pin Pin Name Pin Name Pin 1 USB3 power USB4 power 2 3 USB3 USB4 4 5 USB3 USB4 6 7 Gnd Gnd 8 9 Gnd Gnd 10 Table A 17 J6 CRT connector J6 CRT Connector Pin Pin Name Pin Name Pin 1 RD GR 2 3 BL GND 4 5 5V GND 6 7 HSYNCOUT DDC SDA 8 9 DDC SCL VSYNCOUT 10 112 ...

Страница 113: ...C bit 1 16 17 Port C bit 3 Port A bit 7 18 19 Port A bit 0 Port A bit 6 20 21 Port A bit 1 Port A bit 5 22 23 Port A bit 2 Port A bit 4 24 25 Port A bit 3 Gnd 26 5V safe is fused through a 750 mA automatic resetting fuse Table A 19 J7 LPT connector J7 LPT connector Pin Pin Name Pin Name Pin 1 STB AFD 3 4 PD 0 ERR 5 6 PD 1 INIT 7 8 PD 2 SLIN 9 10 PD 3 Gnd 11 12 PD 4 Gnd 13 14 PD 5 Gnd 15 16 PD 6 Gn...

Страница 114: ... IDEPIORDY 27 26 Gnd IDEPIOR 25 24 Gnd IDEPIOW 23 22 Gnd IDEIDRQ 21 20 KEY Gnd 19 18 IDEDP 15 IDEDP 0 17 16 IDEDP 14 IDEDP 1 15 14 IDEDP 13 IDEDP 2 13 12 IDEDP 12 IDEDP 3 11 10 IDEDP 11 IDEDP 4 9 8 IDEDP 10 IDEDP 5 7 6 IDEDP 9 IDEDP 6 5 4 IDEDP 8 IDEDP 7 3 2 Gnd IDEPRST 1 active low Table A 21 J9 Audio connector J9 Audio connector Pin Pin Name Pin Name Pin 1 LINEOUT_L LINEIN_R 2 3 AGND AGND 4 5 AG...

Страница 115: ...RDY KEY 11 AEN SMEMW 12 SA19 SMEMR 13 SA18 IOW 14 SA17 IOR 15 SA16 DACK3 16 SA15 DRQ3 17 SA14 DACK1 18 SA13 DRQ1 19 SA12 REF 20 SA11 SYSCLK 21 SA10 IRQ7 22 SA9 IRQ6 23 SA8 IRQ5 24 SA7 IRQ4 25 SA6 IRQ3 26 SA5 DACK2 27 SA4 TC 28 SA3 BALE 29 SA2 5V SAFE 30 SA1 OSC 31 SA0 GND indicates an inverted signal Table A 23 J11 Power connector J11 Power connector Pin Signal 1 5V 2 Gnd 115 ...

Страница 116: ...9 GND GND 10 11 GND GND 12 13 5V GND 14 15 GND GND 16 17 GND A2 18 19 A1 A0 20 21 DD0 DD1 22 21 DD2 NC 24 25 NC NC 26 27 DD11 DD12 28 29 DD13 DD14 30 31 DD15 HDCS1 32 33 NC IOR 34 35 IOW 5V 36 37 IRQ14 5V 38 39 M S select NC 40 41 RST IORDY 42 43 NC 5V 44 45 ACTLED PDIAG 46 47 DD8 DD9 48 49 DD10 GND 50 51 NC NC 52 active low 116 ...

Страница 117: ... GROUND FPLINE 4 5 FPFRAME GROUND 6 7 GROUND GROUND 8 9 R0 R1 10 11 R2 GROUND 12 13 R3 R4 14 15 R5 GROUND 16 17 GROUND GROUND 18 19 G0 G1 20 21 G2 GROUND 22 23 G3 G4 24 25 G5 GROUND 26 27 GROUND GROUND 28 29 B0 B1 30 31 B2 GROUND 32 33 B3 B4 34 35 B5 GROUND 36 37 DRDY nc 38 39 VCC 3 3 VCC 3 3 40 41 nc 117 ...

Страница 118: ...ted below The drivers and utilities are in a self extracting zip file located at the Octagon Systems web site on the 5266 product page Download this file to a separate directory on your hard drive then double click on it to extract the files Support commands REFLASH EXE RESET COM 118 ...

Страница 119: ...ntrols the programming sequence These files are located in the 5266 utilities see page 118 RESET COM Purpose This support command enables the watchdog timer and allows time out to expire thus restarting the system Syntax RESET Remarks The RESET command also restarts all the expansion I O cards on the bus This differs from a CTRL ALT DEL reboot of the system which only restarts the system but not t...

Страница 120: ... 24 24 cable for I O port 10 pin 1743 CMA 26 12 12 cable for digital IO port 26 pin 2776 CMA 26 24 24 cable for digital IO port 26 pin 1257 Terminal Boards STB 26 Terminal board 26 position 2905 STB 20 Terminal board 20 position 2904 STB 10 Terminal board 10 position 2901 TBD 100 Terminal board with LED indicators 1183 Opto Modules and Racks G4 IAC5 Input module 90 140 VAC 2395 G4 IAC5A Input modu...

Страница 121: ...basis without warranty The warranty and remedies set forth above are in lieu of all other warranties expressed or implied oral or written either in fact or by operation of law statutory or otherwise including warranties of merchantability and fitness for a particular purpose which Octagon specifically disclaims Octagon neither assumes nor authorizes any other liability in connection with the sale ...

Страница 122: ...TED AND WILL BE RETURNED FREIGHT COLLECT Returns There will be a 15 restocking charge on returned product that is unopened and unused if Octagon accepts such a return Returns will not be accepted 30 days after purchase Opened and or used products non standard products software and printed materials are not returnable without prior written agreement Governing law This agreement is made in governed ...

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