Portwell PEB-2737VLA Series User Manual Download Page 17

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Hardware Configuration

PEB-2737VLA User

’s Manual

2-8

CN16 : PS/2 Keyboard/Mouse

Pin No.

Signal Description

Pin No.

Signal Description

KB_DATA

MS_DATA

N/C

GND

+5V

KB_CLK

MS_CLK

N/C

CN17 : USB Port4&Port5 Jack

Pin No.

Signal Description

Pin No.

Signal Description

+5V

USBD5-

USBD4-

USBD5+

USBD4+

GND

CN18 : Audio Jack

Pin No.

Signal Description

Top

Stereo line out

Bottom

Microphone input

CN19 : CRT with Serial port 1 Connector (DB15+DB9)

Pin No.

Signal Description

Pin No.

Signal Description

RED

GREEN

BLUE

MON2PU

GND

N/C

B10

GND

B11

MONOPU

B12

5VDDCDA

B13

HSYNC

B14

VSYNC

B15

RED

DCD2#

RXD2#

TXD2#

DTR2#

GND

DSR2#

RTS2#

CTS2#

RI2#

Summary of Contents for PEB-2737VLA Series

Page 1: ...PEB 2737VLA Series Embedded System Board User s Manual Version 1 0b Copyright Portwell Inc 2009 All rights reserved All other brand names are registered trademarks of their respective owners ...

Page 2: ...3 2 3 4 Installing the Single Board Computer 3 2 3 4 1 Chipset Component Driver 3 3 3 4 2 Intel Integrated Graphics GMCH Chip 3 3 3 4 3 Realtek RTL8111C Gigabit Ethernet Controller 3 3 3 4 4 Audio Controller 3 3 3 5 WDT Function 3 4 3 6 GPIO 3 6 3 6 1 Pin assignment 3 7 Chapter 4 BIOS Setup Information 4 1 4 1 Entering Setup Launch System Setup 4 1 4 2 Main 4 2 4 3 Advanced 4 3 4 4 PCIPnP 4 17 4 5...

Page 3: ...Timer function Chapter 4 BIOS Setup Information Specifies the meaning of each setup parameters how to get advanced BIOS performance and update new BIOS In addition POST checkpoint list will give users some guidelines of trouble shooting Chapter 5 Troubleshooting Provides various useful tips to quickly get PEB 2737VLA running with success As basic hardware installation has been addressed in Chapter...

Page 4: ...ull loading so it can be a truly fanless configuration In addition the PEB 2737VLA supports one SO DIMM memory slot for DDR2 SDRAM up to 2GB and comes with one IDE one CompactFlash socket two RS232 audio CH2 1 seven USB2 0 one SDIO socket and dual independent display by 24 bit LVDS and VGA The PEB 2737VLA can be adopted by equipments such as digital signage Portable POS Medical Healthcare Mobile K...

Page 5: ...ntel System Controller Hub US15W System BIOS AMI BIOS Main Memory One 200 pin DDR2 SODIMM socket supports up to 2GB dual channel 400 533MHz memory Serial Port Support two RS 232 USB Interface Support eight USB Universal Serial Bus ports four on rear I O and two on board header for internal devices USB port6 7 can support USB 2 0 only base on Intel specification Audio Interface Connector for Mic In...

Page 6: ...rts 2x5 pin 2mm pitch header One 3 pin power connector for system fan Power on off LED Hard drive activity LED and system Reset switch headers On board programmable 8 bit Digital I O interface 8 pin power connector for ATX power input System Monitoring Feature Monitor system temperature and major power sources Physical and Environmental requirements Outline Dimension L x W 146mm X 102mm Power requ...

Page 7: ...System Overview PEB 2737VLA User s Manual 1 4 Operating temperature 0 to 60 C Storage temperature 20 to 80 C Relative Humidity 5 to 95 non condensing 1 3 1 Mechanical Drawing ...

Page 8: ...System Overview PEB 2737VLA User s Manual 1 5 ...

Page 9: ...System Overview PEB 2737VLA User s Manual 1 6 1 4 System Architecture All of details operating relations are shown in PEB 2737VLA System Block Diagram PEB 2737VLA Block Diagram ...

Page 10: ...B 2737 are in the proper position The default settings are indicated with a star sign 2 1 Jumper Setting For users to customize PEB 2737 s features In the following sections Short means covering a jumper cap over jumper pins Open or N C Not Connected means removing a jumper cap from jumper pins Users can refer to Figure 2 1 for the Jumper and Connector locations Figure 2 1 PEB 2737VLA Jumper and C...

Page 11: ...on 1 2 3 4 5 6 Open Programming microcontroller JP4 5V 3 3V backlight enable pin power level selection JP4 Function 1 2 Short 3 3V 2 3 Short 5V JP5 Serial port 2 function selection JP5 Function 5 6 9 11 10 12 15 17 16 18 Short RS 232 3 4 7 9 8 10 13 15 14 16 21 22 Short RS 422 1 2 7 9 8 10 19 20 Short RS 485 J18 Front Panel Header Pin No Signal Description Pin No Signal Description 1 GND 2 PWRLED ...

Page 12: ...USB port 6 7 CN8 USB port 0 2 CN9 8 bit GPIO CN10 Single channel LVDS panel interface CN11 Panel backlight inverter s power CN12 ATX power source CN13 LPC Debug Port CN14 Giga Ethernet with USB port 1 3 CN15 Microcontroller programmer CN16 PS 2 Keyboard Mouse CN17 USB port 4 5 CN18 Audio port Stereo line output microphone input CN19 CRT with serial port 1 CN21 FAN CN22 DDR2 SO DIMM 200Pin CN23 Com...

Page 13: ... Disk 44 pin Connector Pin No Signal Description Pin No Signal Description 1 R_PLT_RST 2 GND 3 PDD7 4 PDD8 5 PDD6 6 PDD9 7 PDD5 8 PDD10 9 PDD4 10 PDD11 11 PDD3 12 PDD12 13 PDD2 14 PDD13 15 PDD1 16 PDD14 17 PDD0 18 PDD15 19 GND 20 N C 21 PDDREQ 22 GND 23 PDIOW 24 GND 25 PDIOR 26 GND 27 PDIORDY 28 GND 29 PDDACK 30 GND 31 IRQ14 32 N C 33 PDA1 34 GND 35 PDA0 36 PDA2 37 PDCS1 38 PDCS3 39 IDEACT 40 GND ...

Page 14: ...gnal Description Pin No Signal Description 1 DCD1 2 RXD1 3 TXD1 4 DTR1 5 GND 6 DSR1 7 RTS1 8 CTS1 9 RI1 10 N C CN7 USB Port6 Port7 Header Pin No Signal Description Pin No Signal Description 1 5V 2 5V 3 USBD6 4 USBD7 5 USBD6 6 USBD7 7 GND 8 GND 9 N C CN8 USB Port0 Port2 Header Pin No Signal Description Pin No Signal Description 1 5V 2 5V 3 USBD0 4 USBD2 5 USBD0 6 USBD2 7 GND 8 GND 9 N C ...

Page 15: ... Description Pin No Signal Description 1 LVDSA_DATA0 2 LVDSA_DATA0 3 LVDSA_DATA1 4 LVDSA_DATA1 5 LVDSA_DATA2 6 LVDSA_DATA2 7 LVDSA_DATA3 8 LVDSA_DATA3 9 LVDSA_CLK 10 LVDSA_CLK 11 N C 12 N C 13 N C 14 N C 15 N C 16 N C 17 N C 18 N C 19 N C 20 N C 21 LVDS_I2C_DATA 22 LVDS_I2C_CLK 23 GND 24 BACKLIGHT_CTL 25 GND 26 GND 27 VDD_LVDS 28 VDD_LVDS 29 N C 30 VDD_LVDS CN11 LVDS Panel Back Light Inverter Powe...

Page 16: ... Description 1 LAD0 2 3 3V 3 LAD1 4 PLT_RST 5 LAD2 6 LFRAME 7 LAD3 8 LPC_PCID 9 N C 10 GND CN14 Giga Ethernet RJ45 with 2 port USB Jack Pin No Signal Description Pin No Signal Description 1 LAN 0 2 LAN 0 3 LAN 1 4 LAN 2 5 LAN 2 6 LAN 1 7 LAN 3 8 LAN 3 9 5V 10 5V 11 USBD1 12 USBD3 13 USBD1 14 USBD3 15 GND 16 GND CN15 Microcontroller programmer Header Pin No Signal Description 1 Vpp 2 3 3V 3 GND 4 I...

Page 17: ...tion Pin No Signal Description T1 5V B1 5V T2 USBD5 B2 USBD4 T3 USBD5 B3 USBD4 T4 GND B4 GND CN18 Audio Jack Pin No Signal Description Top Stereo line out Bottom Microphone input CN19 CRT with Serial port 1 Connector DB15 DB9 Pin No Signal Description Pin No Signal Description B1 RED B2 GREEN B3 BLUE B4 MON2PU B5 GND B6 GND B7 GND B8 GND B9 N C B10 GND B11 MONOPU B12 5VDDCDA B13 HSYNC B14 VSYNC B1...

Page 18: ...Data 12 4 Data 5 29 Data 13 5 Data 6 30 Data 14 6 Data 7 31 Data 15 7 HDC CS0 32 HDC CS1 8 Ground 33 N C 9 Ground 34 IOR 10 Ground 35 IOW 11 Ground 36 Write Enable pull high 4 7k to 5V 12 Ground 37 IRQ 13 5V 38 5V 14 Ground 39 CSEL pull low 470 to Gnd 15 Ground 40 N C 16 Ground 41 RESET 17 Ground 42 IORDY 18 HDC SDA2 43 DREQ 19 HDC SDA1 44 DACK 20 HDC SDA0 45 HDC ACT 21 Data 0 46 PDIAG Pull Low 15...

Page 19: ...Hardware Configuration PEB 2737VLA User s Manual 2 10 ...

Page 20: ...sed CPU speed of Intel ATOM TM Processor for Mobile can be detected automatically 3 2 Intel System Controller Hub US15W The Intel System Controller Hub US15W is a low power chipset in one small 22x22 mm package It combines the Intel Graphics Media Accelerator 500 memory controller and I O controller in a single chip solution while featuring advanced 3D graphics and extensive I O capabilities such ...

Page 21: ...the card slots Note To maintain system stability don t change any of DRAM parameters in BIOS setup to upgrade system performance without acquiring technical information Memory frequency CPU FSB synchronization PEB 2737VLA supports different memory frequencies depending on the CPU front side bus and the type of DDR2 SO DIMM CPU FSB Memory Frequency 533MHz 533 400MHz 400 MHz 400MHz 3 4 Installing th...

Page 22: ...ombination makes PEB 2737VLA an excellent piece of multimedia hardware Drivers Support Please find Springdale GMCH driver in the PEB 2737VLA CD title Drivers support Windows XP VISTA 3 4 3 Realtek RTL8111C Gigabit Ethernet Controller Drivers Support Please find Realtek RLT8111C LAN drivers in Ethernet directory of PEB 2737VLA CD title The drivers support Windows XP VISTA LED Indicator for LAN stat...

Page 23: ...ritten in C language User can write a non zero value defined as Twd into the Time out Value Register CR_Twd to enable WDT Users can write 0x00 and then Twd to CR_Twd to refresh WDT To refresh WDT the time tolerance of refreshing interval must be considered The smaller of Twd the more deviation of WDT and you need to include more tolerance Let Twd be longer than 2 seconds is the recommendation due ...

Page 24: ...ned char al_char outportb EFIR CR_rx al_char inportb EFDR Write Configuration Register CR_wx with byte al_char1 outportb EFIR CR_wx outportb EFDR al_char1 Exit extended mode after completion of configuration register access outportb EFIR 0xaa How to access W83627DHG WDT Configuration Register Must enter extended function mode first then follow the following steps for accessing WDT registers Step 1...

Page 25: ...riting 00 means disable WDT 1 255 time unit time unit second minute Notes CR2B_bit4P0 means Write 0 to bit4 of Configuration Register 0x2B 3 6 GPIO CN9 General Purpose Input Output Interface Connector There are 8 GPIO pins on PEB 2737VLA GP10 GP11 GP12 and GP13 are dedicated GPO pins with 12mA current sink capacity at 5V signal level The output signals have internal weak pull high resistor 4 7K Oh...

Page 26: ...circuit inside these 3 GPIOs and it can be disabled by programming respective bit LD9 CR FEh bit 4 6 3 6 2 Pin assignment CN9 General Purpose I O Connector PIN No Signal Description 1 General Purpose Input Port 10 2 General Purpose Output Port 14 3 General Purpose Input Port 11 4 General Purpose Output Port 15 5 General Purpose Input Port 12 6 General Purpose Output Port 16 7 General Purpose Input...

Page 27: ...d d 0x02 Set_CFG 0x30 d Enable GPIO3 Set_CFG 0xFE 0x77 Declare GP30 GP31 GP35 s triggle type is level and diable input de bouncer Set_CFG 0xF2 0x00 Declare GP30 37 without data inversion 3 LD9_CRF0_PF0 Set SGP30 33 as GPO pins and SGP34 37 as GPI pin Set_CFG 0xF0 0xF0 GP30 33 as output GP34 GP37 as input 4 LD9_CRF1 Data Register for reading writing data to GPIO pins E g if put four jumper caps on ...

Page 28: ...t the user to enter the SETUP program Some errors are significant enough to abort the start up 4 1 Entering Setup Launch System Setup Power on the computer and the system will start POST Power On Self Test process When the message below appears on the screen press Del key to enter Setup Press Del to enter SETUP If the message disappears before you respond and you still wish to enter Setup restart ...

Page 29: ...ons such as time date etc AMI BIOS Processor System Memory These items show the firmware and hardware specifications of your system Read only System Time The time format is Hour Minute Second Use or to configure system Time System Date The date format is Day Month Date Year Use or to configure system Date ...

Page 30: ...BIOS Setup Information PEB 2737VLA User s Manual 4 3 4 3 Advanced Use this menu to set up the items of special enhanced features ...

Page 31: ...s that comprise a cache line pair when it determines data required is not currently in its cache The choice Disabled Enabled Max CPUID Value Limit The Max CPUID Value Limit BIOS feature allows you to circumvent problems with older operating systems that do not support the Intel Pentium 4 processor with Hyper Threading Technology When enabled the processor will limit the maximum CPUID input value t...

Page 32: ...ed Intel R SpeedStep tm tech Disabled Enabled GV3 tech function The choice Disabled Enabled IDE Configuration The IDE Configuration the IDE devices such as hard disk drive or CD ROM drive It uses a separate sub menu to configure each hard disk drive Master and Slave ATA IDE Configuration This item allows you to configure the ATA IDE The choice Disabled Compatible ...

Page 33: ...s and Sectors Block Multi Sector Transfer Any selection except Disabled determines the number of sectors transferred per block PIO Mode Indicates the type of PIO Programmed Input Output DMA Mode Indicates the type of Ultra DMA S M A R T This allows you to activate the S M A R T Self Monitoring Analysis Reporting Technology capability for the hard disks S M A R T is a utility that monitors your dis...

Page 34: ...ed Enabled IDE Detect Time Out Sec Select the time out value for detecting ATA ATAPI device s The choice 0 5 10 15 20 25 30 35 ATA PI 80Pin Cable Detection Select the mechanism for detecting 80Pin ATA PI cable The choice Host Device Host Device Super IO Configuration Serial Port 1 Port 2 Address Allows BIOS Select Serial Port1 or Port2 Base Addresses The choice Disabled 3F8 IRQ4 3E8 IRQ4 2E8 IRQ3 ...

Page 35: ... of 10 Sec 20 Sec 30 Sec 40 Sec 1 Min 2 Min and 4 Min The default setting is Disabled Hardware Health Configuration Configuration monitor the Hardware Health SYSFAN Mode Setting This item enables or disables the Smart Fan feature Smart Fan is an excellent feature which will adjust the system fan speed automatically depending on the current system temperature to prevent your system from overheating...

Page 36: ... User s Manual 4 9 SYSFAN PWM Control This setting allows users to control the fan speed by changing the duty cycle of the fan PWM Pulse Width Modulation output The choice 0 255 ACPI Configuration Select for Advanced ACPI Configuration ...

Page 37: ...rough the setting of this field Options are S3 STR The S3 sleep mode is a lower power state where the information of system configuration and open applications files is saved to main memory that remains powered while most other hardware components turn off to save energy The information stored in memory will be used to restore the system when a wake up event occurs Repost Video on S3 Resume Set th...

Page 38: ...es Enable RSDP pointers to 64 bit Fixed System Description Tables The choice ACPI v1 0 ACPI v2 0 ACPI v3 0 ACPI APIC support Include ACPI APIC table pointer to RSDT pointer list The choice Disabled Enabled AMI OEMB table Include OEMB table pointer to R X SDT pointer list The choice Disabled Enabled Headless mode Enable Disable Headless operation mode through ACPI The choice Disabled Enabled ...

Page 39: ...n Chipset ACPI related Configuration settings Use this section to configure additional ACPI options APIC ACPI SCI IRQ Enable Disable APIC ACPI SCI IRQ The choice Disabled Enabled USB Device Wake From S3 S4 Enable Disable USB device Wake from S3 S4 mode The choice Disabled Enabled ...

Page 40: ...r Table MPS Revision This field allows you to select which MPS Multi Processor Specification version to be used for the operating system You need to select the MPS version supported by your operating system To find out which version to use consult the vendor of your operating system The choice 1 1 1 4 ...

Page 41: ...S Setup Information PEB 2737VLA User s Manual 4 14 PCI Express Configuration Configure PCI Express Support Active State Power Management PCI Express L0s and L1 link power states The choice Disabled Enabled ...

Page 42: ...BIOS Setup Information PEB 2737VLA User s Manual 4 15 Smbios Configuration SMBIOS Configuration Menu Smbios Smi Support SMBIOS SMI Wrapper support for PnP Func 50h 54h The choice Disabled Enabled ...

Page 43: ...rt or have any USB 1 1 2 0 driver installed such as DOS and SCO Unix The choice Disabled Enabled Auto USB 2 0 Controller Mode This setting specifies the operation mode of the onboard USB 2 0 controller The choice FullSpeed HiSpeed BIOS EHCI Hand Off This is a workaround for OSes without EHCI hand off support The EHCI ownership change should claim by EHCI driver The choice Disabled Enabled ...

Page 44: ...BIOS Setup Information PEB 2737VLA User s Manual 4 17 4 4 PCIPnP Advanced PCI PnP setting wrong values in below sections may cause system to malfunction ...

Page 45: ...I VGA card even if card requests an IRQ The choice No Yes Palette Snooping Enabled informs the PCI devices that an ISA graphics device is installed in the system so the card will function correctly The choice Disabled Enabled PCI IDE BusMaster Enabled Uses PCI bus mastering for reading writing to IDE drives The choice Disabled Enabled OffBoard PCI ISA IDE Card Some PCI IDE cards may require this t...

Page 46: ...rmation PEB 2737VLA User s Manual 4 19 Reserved Memory Size Select Size of memory block to reserve for legacy ISA devices The choice Disabled 16K 32K 64K 4 5 Boot Use this menu to specify the priority of boot devices ...

Page 47: ...board or system manufacturer s full screen logo When it is enabled the BIOS will display the full screen logo during the boot up sequence hiding normal POST messages When it is disabled the BIOS will display the normal POST messages instead of the full screen logo Please note that enabling this BIOS feature often adds 2 3 seconds of delay to the booting sequence This delay ensures that the logo is...

Page 48: ...users to use the arrow keys on the numeric keypad The choice Off On PS 2 Mouse support Select Enabled if you need to use a PS 2 interfaced mouse in the operating system The choice Disabled Enabled Auto Wait For F1 If Error When this setting is set to Enabled and the boot sequence encounters an error it asks you to press F1 If disabled the system continues to boot without waiting for you to press a...

Page 49: ...en disabled the ROM BIOS of these host adaptors will not be able to capture Interrupt 19 Therefore you will not be able to boot operating systems from any bootable disks attached to these host adaptors Nor will you be able to gain access to their ROM setup utilities The choice Disabled Enabled Boot Device Priority 1st Boot Device The items allow you to set the sequence of boot devices where BIOS a...

Page 50: ...rd Supervisor Password controls access to the BIOS Setup utility These settings allow you to set or change the supervisor password User Password Change User Password User Password controls access to the system at boot These settings allow you to set or change the user password Boot Sector Virus Protection Boot Sector Virus Protection The choice Disabled Enabled ...

Page 51: ...BIOS Setup Information PEB 2737VLA User s Manual 4 24 4 7 Chipset This menu controls the advanced features of the onboard Northbridge and Southbridge ...

Page 52: ... Adapter Select which graphics controller to use as the primary boot device The choice IGD PCIe IGD Internal Graphics Mode Select Select the amount of system memory used by the internal graphics device The choice Disabled Enabled 1MB Enabled 4MB Enabled 8MB MSAC Memory Size The choice 128MB 256MB ...

Page 53: ...ls it has a native resolution at which images display at their sharpest This native resolution e g 1280x1024 is the number of pixels in width x number of pixels high in the panel and any time your software resolution is different to this native resolution the LCD panel will do one of the following depending on your choice Auto The scaling unit on your graphics card will rescale the image before it...

Page 54: ...ic 1024x768 generic 640x480 NEC 8 4 800x600 NEC 9 1024x600 TMD 5 61 1024x600 Samsung 4 8 1024x768 Samsung 15 1280x768 Sharp 7 2 1280x800 Samsung 15 4 1366x768 TMD 11 1 DPST Control The choice VBIOS Default DPST Disabled DPST Enabled at Level 1 Level 5 TV Standard The choice VBIOS Default NTSC PAL SECAM SMPTE240M ITU R television SMPTE295M SMPTE296M CEA 7702 CEA 7703 South Bridge Chipset Configurat...

Page 55: ...abled SDIO controller The choice Enabled Disabled Audio Controller Codec The choice Auto Azalia Disabled SLP_S4 Min Assertion Width The choice 4 to 5 seconds 3to 4 seconds 2 to 3 seconds 1 to 2 seconds Restore on AC Power Loss This item allows user to configure the power status of using ATX power supply after a serious power loss occurs The choice Power Off Power On Last State Serial IRQ Mode The ...

Page 56: ...ng Enter on this item asks for confirmation Save changes to CMOS and exit the Setup Utility Discard Changes and Exit Abandon all changes and exit the Setup Utility Discard Changes Abandon all changes and continue with the Setup Utility Load Optimal Defaults Use this menu to load the default values set by the SBC manufacturer specifically for optimal performance of the SBC Load Failsafe Defaults Us...

Page 57: ...st be connected CN12 8 pins Power Connector Figure 5 2 BIOS Setting It is assumed that users have correctly adopted modules and connected all the device cables required before turning on ATX power 200 pin DDR2 SO DIMM keyboard mouse PATA hard disk VGA connector device power cables ATX accessories are good examples that deserve attention With no assurance of properly and correctly accommodating the...

Page 58: ...e IDE ports and press Enter Setup the selected IDE port and its access mode to Auto This will force system to automatically pick up the IDE devices that are being connected each time system boots up Improper disable operation There are too many occasions where users disable a certain device feature in one application through BIOS setting These variables may not be set back to the original values w...

Page 59: ...loppy Disk Controller IRQ 7 Printer Port Parallel Port IRQ 8 CMOS Real Time Clock IRQ 9 ACPI Controller IRQ 10 SCSI adapter Video card USB controller IRQ 11 Network Controller IRQ 12 PS 2 Mouse Connector IRQ 13 Math coprocessor IRQ 14 Primary IDE Controller IRQ 15 Secondary IDE Controller It is then very easy to find out which IRQ resource is ready for additional peripherals If IRQ resource is not...

Page 60: ...f panel you will use on PEB 2737VLA series different panel will connect to different connector LVDS interface is CN10 Question How can I change COM port to RS 232 RS 422 RS 485 mode Answer You can short JP5 pin header to change RS 232 RS 422 RS 485 mode JP5 COM1 CN19 Top Interface Selection JP5 Function 5 6 9 11 10 12 15 17 16 18 Short RS 232 3 4 7 9 8 10 13 15 14 16 21 22 Short RS 422 1 2 7 9 8 1...

Page 61: ...emory address used Memory Area Size Device Description 0000 003F 1K Interrupt Area 0040 004F 0 3K BIOS Data Area 0050 006F 0 5K System Data 0070 040A 14K DOS 040B 04C1 2 9K Program Area 04C2 9FBF 619K Available Conventional memory ends at 639K 9FC0 9FFF 1K Extended BIOS Area A000 AFFF 64K VGA Graphics B000 B7FF 32K Unused B800 BFFF 32K VGA Text C000 CE5F 57K Video ROM CE60 EFFF 134K Unused F000 FF...

Page 62: ...m ROM System Timer IRQ 1 System ROM Keyboard Event IRQ 2 Unassigned Usable IRQ IRQ 3 System ROM COM2 IRQ 4 System ROM COM1 IRQ 5 Unassigned Usable IRQ IRQ 6 System ROM Diskette Event IRQ 7 Unused Usable IRQ IRQ 8 System ROM Real Time Clock IRQ 9 Unassigned Usable IRQ IRQ 10 Unassigned Usable IRQ IRQ 11 Unassigned Usable IRQ IRQ 12 System ROM IBM Mouse Event IRQ 13 System ROM Coprocessor Error IRQ ...

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