Wincor Nixdorf BEETLE User Manual
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Wincor Nixdorf BEETLE User Manual

Wincor Nixdorf BEETLE User Manual

Pos motherboard with intel celeron processor / intel pentium iii processor
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POS Motherboard
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  • Page 1 POS Motherboard with Intel Celeron Processor / Intel Pentium III Processor User Manual...
  • Page 2 - the layout - the product We would like to thank you in advance for your comments. With kind regards, Wincor Nixdorf GmbH & Co. KG Wernerwerkdamm 16 D-13629 Berlin Fax: (+4930) 3864 3065 Your opinion: Order number of this manual: 0175 00 28522C (POS Motherboard)
  • Page 3 Published by Wincor Nixdorf GmbH & Co. KG D-33094 Paderborn Edition September 2000 Order No.: 0175 00 28522C Printed in Singapore...
  • Page 4 Motherboard with Intel Celeron Processor / Intel Pentium III Processor Edition September 2000...
  • Page 5 All brand and product names mentioned in this document are trademarks of their respective owners. Copyright © Wincor Nixdorf GmbH & Co. KG, 2000 The reproduction, transmission or use of this document or its contents is not permitted without express authority.

  • Page 6: Table Of Contents

    Contents Introduction ....................1 Block Diagram .................... 3 Technical Data ..................4 Mechanical Arrangement ................9 Jumper Settings ..................10 Interrupt Setting ..................10 IRQ10=COM3* + COM4* , IRQ11 available .......... 10 IRQ10 = COM3*, IRQ11 = COM4* ............11 IRQ10 available, IRQ11= COM4* ............
  • Page 7 Type [Auto] ....................27 [User] ......................27 Cylinders ....................27 Heads .....................28 Sector .....................28 Maximum Capacity .................28 Multi-Sector Transfers [Maximum] ............28 LBA Mode Control [Enabled] ..............29 32 Bit I/O [Disabled] ................29 SMART Monitoring .................29 PIO Mode ....................29 Local Bus IDE adapter [Primary] ............30 Memory Cache [Enabled] ...............30 System Memory [640 KB] ..............30 Installed Memory [XXX MB] ..............30...
  • Page 8 Processor Serial Number [Disabled] ............. 38 Power Menu ..................... 38 Power Savings [Disabled] ..............39 Wakeup On Modem Ring [Off] ............... 39 Wakeup On LAN [Off] ................39 Wakeup On Time [Off] ................39 Power State [Stay off] ................40 Hardware Monitor ..................

  • Page 9: Introduction

    Introduction This manual describes the features of the Central Processing Unit (CPU) for the BEETLE POS Systems based on the Intel Celeron Processor family and the Intel Pentium III processor. With a frequency of up to 566 MHz (Pentium III: 700 MHz), second level cache and many other features, these processors guarantee an increased performance of your BEETLE POS System.
  • Page 10 Floppy Disk connectors for 3.5" Floppy Disk Drives, Standard and Slim line IEEE1284 compatible Parallel Interface (SPP, EPP, ECP) Small battery type CR 1/3N (size: length 10.5mm, diameter 11.5mm), long life time Power management features incl. UPS functionality Logic On/Off feature Wake up feature (WakeOnLan,WakeOnModem,WakeOnRTC) Polyfuses for all powered Interfaces (COM,USB,Keyboard) Supported operating systems: MS-DOS, WIN98, WIN/CE,...

  • Page 11: Block Diagram

    Block Diagram The block diagram shows all of the functional units of the mother- board. The physical plug-in connections to the system and external peripherals are shown at the bottom of the diagram. Only the most important internal connectors are part of the block diagram. GB - 3...

  • Page 12: Technical Data

    Technical Data Supported systems: BEETLE/M, BEETLE/NetPOS, BEETLE/S, BEETLE/XL-II Architecture: PC-AT compatible and POS-specific functional units Technology: TTL,CMOS,LVT; SMD + 5V, +3.3V, AGTL+ technology Operating Modes: Normal Mode, Power Save Mode Power Management: APM 1.2 Operating Systems: MS-DOS, WIN98, WIN/CE, WIN/NT, WIN2000, LINUX...
  • Page 13 Chipset (cont.) DMA controller Interrupt controller Timer based on 82C54 Two USB 1.0 Ports 1.5Mbit/sec and 12 Mbit/sec UHCI Design Guide Rev. 1.1 interface SMBus interface Real-Time Clock incl. 256 byte CMOS SRAM Data retention 5 years 324 BGA package Super I/O: NS97317 with the following functions: FD-Controller NEC 765 compatible,...
  • Page 14 320MB, 384MB SDRAM Bus Freq.: 66 MHz (Celeron); 100MHz (Pentium III) Risercard Interface: ISA-Bus, PCI-Bus (32 bit interface, 33MHz) No changes of introduced BEETLE-Risercards, Risercard with 3 PCI slots supported BIOS: 256KB Flash Memory (Phoenix 4.06) PnP ISA/PCI Rev.1.0A (WIN98) DMI Rev.2.0 -support (WIN98)
  • Page 15 Floppy disk connection: Standard interface CMOS, NEC 765- compatible, foil connector and 2.54mm connector Hard disk connection: Local Bus IDE interface, Primary/Secondary for 4 drives, PIO Mode 0 - Mode 4, UDMA/33, 2mm connector for Primary and Secondary each USB connection: Standard 2 port connector, series Stack A PCI Plug-in card interface: 32 bit interface, 33 MHz i.e.
  • Page 16 Cash drawer connection: Up to 2 cash drawers can be connected, connection via RJ12 connector inside Power supply Printer Connection: Connection via HOSIDEN connector inside Power supply (24V, max. 2A). Connecting cable with HOSIDEN plug required. Note: Connect only cable to the 24V connector which are marked with DP-1 or DP-2.

  • Page 17: Mechanical Arrangement

    Mechanical Arrangement The CPU comprises the printed circuit board with connectors for all external peripheral connections (see also page 16 ) and for installing the optional plug-in cards. It is equipped with a Lithium battery. PS2/Mouse 32KB or 512KB 128KB XILINX BIOS 49F002T...

  • Page 18: Jumper Settings

    Jumper Settings The CPU is equipped with jumpers which can be used to set the interrupt assignments for the serial interfaces COM3* and COM4* I1,I2,I3 set the component configuration of the non-volatile memory NV1, NV2 set the panel type configuration PT1,PT2, PT3,PT4 activate COM2 for SNIKEY-Touchcontroller...

  • Page 19: Irq10 = Com3*, Irq11 = Com4

    IRQ10 = COM3*, IRQ11 = COM4* Interrupt Paneltype reserved IRQ10 available, IRQ11= COM4* Interrupt Paneltype reserved COM3* available without IRQ support! IRQ10 = COM3*, IRQ11 available Interrupt Paneltype reserved COM4* available without IRQ support! GB - 11...

  • Page 20: Irq10, Irq11 Available

    IRQ10, IRQ11 available Interrupt Paneltype reserved COM3* and COM4* available without IRQ support! NV-RAM Setting NV1,NV2 Default: NV2: NV-SRAM 32 KB or 128 KB NV1:NV-SRAM 512 KB GB - 12...

  • Page 21: Lcd Paneltype Setting

    LCD Paneltype Setting PT1,PT2,PT3,PT4 Default: Paneltype 0: BA71, BA72, SNIKEY SVGA (800x600) Interrupt Paneltype reserved Paneltype 1: BA73A (TFT), XGA (1024 x 768) Interrupt Paneltype reserved GB - 13...

  • Page 22: Com2/Touch Setting

    Paneltype 2: BA69 (STN), (320 x 240); BA70 (DSTN), VGA (640 x 480) Interrupt Paneltype reserved All other jumper positions reserved for future Paneltypes. COM2/Touch Setting S1,S2 Default: COM2* available, no SNIkey with Touch connected SNIkey with Touch connected, no COM2* available GB - 14...

  • Page 23: Changing The Cpu Battery

    Changing the CPU Battery The BEETLE POS systems are equipped with a lithium battery on the CPU board to ensure data retention, the time and the setup parameters. The battery should be changed approximately every five years. When inserting the new battery, make sure the polarity is correct.

  • Page 24: Connecting Peripherals

    Connecting Peripherals When connecting peripherals always make sure that the system is switched off! CRT/TFT LPT1 KYBD COM4* COM3* COM2* COM1 The motherboard offers a total of four serial interfaces: COM1 - COM4* and interfaces for connecting displays, modular printers, keyboards, USB-devices, loudspeaker and for the network connection.
  • Page 25 TFT Adapter/TFT Panel Link If a TFT adapter is installed you can connect a SNIkeyTFT or a BA71 or BA72 to your BEETLE. Connect the 50-pin data cable of the display to the system. The signals for the touchscreen function including the loudspeaker of the display module and the power supply are also effected via this cable.
  • Page 26 CRT Adapter If a CRT adapter is installed, you can connect any VGA monitor (like the MO34) to the BEETLE system via the 15-pin D-sub jack on the CRT adapter. Power is supplied to the monitor via the rubber connector on the BEETLE, located on the back of the housing.
  • Page 27 KYBD Your BEETLE system has a 6-pin mini-DIN jack for connecting a keyboard. Make sure that the connector is plugged firmly into the socket to prevent malfunctioning. Power is supplied to the keyboard via this socket. If you wish to connect a standard PC keyboard with DIN connector, you must use a special adapter cable, obtainable from the Wincor Nixdorf branch office responsible for your area.
  • Page 28 GB - 20...

  • Page 29: Bios Setup

    BIOS Setup The Celeron / Pentium III mainboard comes with a Phoenix BIOS chip that contains the ROM Setup information of your system. This chip serves as an interface between the processor and the rest of the mainboard’s components. This section explains the information contained in the Setup program and tells you how to modify the settings according to your system configuration.

  • Page 30: Bios Menu Bar

    The POS specific components described in this document (e.g. NVRAM, Memory Card, some POS Displays) are not supported by the “Standard BIOS” version but only by the POS BIOS version! The Setup program has been designed to make it to use as easy as possible.

  • Page 31: Legend Bar

    Legend Bar At the bottom of the Setup screen you will notice a legend bar. The keys in the legend bar allow you to navigate through the various setup menus. The following table lists the keys found in the legend bar with their corresponding alternates and functions.

  • Page 32: General Help

    General Help In addition to the Item Specific Help window, the BIOS setup program also provides a General Help screen. This screen can be called from any menu by simply pressing <F1> or the <Alt> + <H> combination. The General Help screen lists the legend keys with their corresponding alternates and functions.

  • Page 33: Main Screen

    Main screen When the Setup program is accessed, the following screen appears: System Time: [08:14:46] System Date: [09/20/2000] Legacy Diskette A: [1.44 MB 31/2"] Legacy Diskette B: [Disabled] Primary Master [270MB] Primary Slave [None] Secondary Master [None] Secondary Slave [None] Local Bus IDE adapter: [Primary] Memory Cache:...

  • Page 34: System Date [Xx/Xx/Xxxx]

    System Date [XX/XX/XXXX] Sets your system to the date that you specify (usually the current date). The format is month, day, year. Valid values for month, day, and year are: Month: (1 to 12), Day (1 to 31), Year: (up to 2079). Use the <Tab> or <Shift>...

  • Page 35: Type [Auto]

    Type [Auto] Select [Auto] to automatically detect an IDE hard disk drive. If automatic detection is succesful, the correct values will be filled in for the remaining fields of this sub-menu. If automatic detection fails, your hard disk drive may be too old or too new. You can try updating your BIOS or enter the IDE hard disk drive parameters manually.

  • Page 36: Heads

    Heads This field configures the number of read/write heads. Refer to your drive documentation to determine the correct value to enter into this field. To make changes to this field, the Type field must be set to [User]. Sector This field configures the number of sectors per track. Refer to your drive documentation to determine the correct value to enter into this field.

  • Page 37: Lba Mode Control [Enabled]

    LBA Mode Control [Enabled] Select the hard disk drive type in this field. When Logical Block Addressing is enabled, 28-bit addressing of the hard drive is used without regard for cylinders, heads, or sectors. Note that Logical Block Access may decrease the access speed of the hard disk. However, LBA Mode is neccessary for drives with greater than 504MB in storage capacity.

  • Page 38: Local Bus Ide Adapter [Primary]

    Local Bus IDE adapter [Primary] You can select to enable the primary IDE channel, secondary IDE channel, both, or disable both channels. Configuration options: [Both] [Primary] [Secondary] [Disabled]. Memory Cache [Enabled] This field allows you to choose the default of [Enabled] or choose [Disabled] to turn off the CPU’s Level 2 built-in cache.

  • Page 39: Advanced Menu

    Advanced Menu Installed O/S: [Other] Reset Configuration Data: [No] Hard Disk Pre-Delay: [Disabled] Large Disk Access Mode: [DOS] PS/2 Mouse: [Disabled] Default Primary Video Adapter: [PCI/Onboard] Legacy USB Support: [Disabled] Speaker Volume: [Middle] PCI Configuration I/O Device Configuration Audio Options Menu DMI Event Logging Installed O/S [Other] This field allows you to use a Plug-and-Play (PnP) operating system to...

  • Page 40: Hard Disk Pre-Delay [Disabled]

    Hard Disk Pre-Delay [Disabled] A slower hard disk requires a user selectable wait period before detection of it in the “Power On Self Test”. Configuration options: [Disabled] [3...30 seconds]. Large Disk Access Mode [DOS] For UNIX, Novell Netware, or other operating systems you have to select [Other].

  • Page 41: Speaker Volume [Middle]

    Speaker Volume [Middle] This field is for the volume control of the installed speaker. Configuration options: [High] [Middle] [Low]. PCI Configuration ISA graphics device installed: [No] PCI/PNP ISA UMB Region Exclusion PCI/PNP ISA IRQ Region Exclusion ISA graphics device installed [No] Some nonstandard VGA cards may not show colors properly.

  • Page 42: Pci/Pnp Isa Irq Region Exclusion

    PCI/PNP ISA IRQ Region Exclusion These fields indicate whether or not the displayed IRQ for each field is being used by a legacy (non-PnP) ISA card. The default value indicates either that the displayed IRQ is not used or that ISA Configuration Utility (ICU) is being used to determine if an ISA card is using that IRQ.

  • Page 43: Serial Port A [Enabled], Serial Port B [Enabled]

    Serial port A [Enabled], Serial port B [Enabled] This fields configure the Serial ports directly. With [Disabled] the port is switched off. With [Auto] the BIOS has the opportunity to set the base address of the Serial port. With [OS Controlled] the Serial port is disabled as long as the operating system enables this port.

  • Page 44: Sound Chip [Disabled]

    Sound Chip [Disabled] This field allows you to configure the onboard sound chip. The default configuration is [Disabled]. To get the best implementation, please use the [Auto] select function. With this function active the BIOS has to decide which I/O address, interrupt line, and DMA channel is to use to get a conflict free running audio chip.

  • Page 45: Clear All Dmi Event Logs [No]

    Clear all DMI event logs [No] With this point is it possible to clear all the recorded DMI events manualy. Event Logging [Enabled] If you don’t use the DMI event logging, it is possible to shut off the recording mechanism of errors. ECC Event Logging [Enabled] This is a single point only for ECC errors.The recording of ECC errors are only possible, if there are SDRAMs with Parity installed.

  • Page 46: Processor Serial Number [Disabled]

    Type a password and press <Enter>, you can type up to eight alphanumeric characters. Symbols and other keys are ignored. To confirm the password, type the password again and press <Enter>. The password is now set to [Enabled]. This password allows full access to the BIOS Setup menu.

  • Page 47: Power Savings [Disabled]

    The BEETLE cannot receive or transmit data until the system and applications are fully running, thus connection cannot be made on the first try. Turning an external modem off and then back on while the BEETLE is off causes an initialization string that will cause the system to power on.

  • Page 48: Power State [Stay Off]

    Power State [Stay off] Decide whether you want your system to reboot after the power has been interrupted. [Stay off] leaves your system off and [Restore] reboots your system if it was active before power loss. Configuration options: [Stay off] [Restore].

  • Page 49: Cpu Fan Speed, Power Supply Fan Speed [Xxxxrpm]

    CPU Fan Speed, Power Supply Fan Speed [xxxxrpm] The onboard hardware monitor is able to detect the CPU fan speed and power supply speed in rotations per minute (rpm). The presence of the fans is detected automatically. These values refresh upon any key entries in the BIOS setup screen.

  • Page 50: Exit Saving Changes

    Exit menu to ensure the values you selected are saved to the CMOS RAM. The CMOS RAM is sustained by an onboard backup battery and stays on even when the BEETLE is turned off. Once this option is selected, a confirmation is asked. Select [Yes] to save changes and exit.

  • Page 51: Save Changes

    Save Changes This option saves your selections without exiting the Setup program. You can then return to other menus to make changes. After selecting this option, all selections are saved and a confirmation is requested. Select [Yes] to save any changes to the non-volatile RAM. GB - 43...

  • Page 52: The Pos Bios

    The POS BIOS This setup is an integral part of the BIOS. It has been incorporated in the BIOS FLASH ROM. At present, the setup can be started in the following ways: By pressing the key <2> during the POST test phase. By simultaneously pressing <Ctrl>+<Alt>+<ESC>...

  • Page 53: Time And Date

    The various setup screens are described in details below. The outputs are distributed over several screen pages. Where possible, related functions are shown on the same page. The setup program begins with a copyright message. This is followed automatically by a help screen. Copyright(C) Reboot with (7) WN 1992 - 2000...

  • Page 54: Speaker Volume

    Speaker Volume This screen enable the possibility to change the volume of the PC speaker. There are three choices implemented Low, Middle, High. Speaker Volume Middle (8)Prev (6)Incr (2)Next (4)Decr Drive A / Drive B These fields record the types of floppy disk drives installed in the system. The memory card drive can also be specified here as an alternative drive.
  • Page 55 The following screen display shows the hard disk configurations: PRI MASTR USER Type PRI MASTR Auto (3)List Params (8)Prev (6)Incr (8)Prev (6)Incr (2)Next (4)Decr (2)Next (4)Decr Read valid HD Param Cylinders (3)Edit Params YES = (9) (8)Prev NO = other (2)Next Large Disk Access Cyl 977 Head 10...

  • Page 56: Secondary Ide

    (3)Edit Params Cylinders Sectors Heads Enter 5 chars Enter 2 chars Enter 2 chars (2) (8) (2) (8) (2) (8) As shown in the diagrams above, there are two basic alternatives: Entering a configuration manually with the aid of the parameters specified in the documentation for the IDE hard disks, and Automatic configuration of the IDE hard disk with reading the parameters directly from the disk through the setup program.

  • Page 57: Parallel Port Mode

    (8)Prev (2)Next Sound configuration Normally the BEETLE is not designed to work inside a multimedia environment. But if you like to hear some sound, and the codec chip is installed onboard, you can enable the sound function. GB - 49...

  • Page 58: Boot Sequence

    Please note that this function needs a lot of system resources, these are the addresses 220-22Fh, 530-531h, 388-38Bh, the interrupt #5, and the DMA channels 3 and 0. Sound Configuration Disable (8)Prev (6)Incr (2)Next (4)Decr Boot Sequence This field determines where the system looks first for an operating system. Options are A: then C:, C: then A:, C: only.

  • Page 59: Save And Restore

    Power State This allows you whether you want your system to reboot after the power has been interrupted. [Ignore] leaves your system off and [Save and Restore] reboots your system if it was active before power loss. Power State Ignore (8)Prev (6)Incr (2)Next (4)Decr Legacy ISA Memory Addresses...

  • Page 60: Pnp Irq Resources

    All data settings of the IRQ, DMA, and memory information of PCI and ISA PnP cards, were recorded in a non volatile RAM. To clear this information set the value to Yes. This setting will be set to No after the next booting of the BEETLE system. Reset Config Data (8)Prev (6)Incr...

  • Page 61: Password

    Password This field allows you to set a password. Before entering the password press key <6> or <4>. Then type a password of 6 characters. Symbol and other keys are ignored. you have to confirm the entered password. With the entered password it isn’t possible to start up the setup without entering the stored password.

  • Page 62: Test Points Codes

    If you now take a look at the way the setup keys are arranged on the keyboard, you will notice a certain logic: <8> & <2> for the previous and next screen are the top and bot- tom keys, <4> & <6> for more and less values are the keys to the left and right in one level, <5>...
  • Page 63 The routine derives the beep code from the test point error as follows: 1. The 8-bit error code is broken down to four 2-bit groups. 2. Each group is made one-based (1 through 4) by adding 1. 3. Short beeps are generated for the number in each group Example: Testpoint 1Ah = 00 01 10 10 = 1-2-3-3 beeps The following is a list of the checkpoint codes written out to the diagnostic...
  • Page 64 POST Code Name Description (Hex) SET_IN_POST Set bit in CMOS indicating that POST is in progress. Not cleared until Post Code Aeh. CPU_INIT Set CPU configuration registers. CPU_CACHE_ON Turns on the CPU cache. CACHE_INIT Set L2 cache controller registers to values needed for SRAM discovery and testing.
  • Page 65 POST Code Name Description (Hex) PCI_BM_RESET Early reset of PCI devices required to disable bus masters. Assumes the presence of a stack and running from decompressed shadow memory. 8742_INIT Verify 8742 (keyboard controller) is responding. Improper connections/ timing to the 8742. Send self test command to 8742.
  • Page 66 POST Code Name Description (Hex) SET_HUGE_ES Go into protected mode. Set ES, DS, SS, FS, and GS to 4Gb. SIZE_RAM Determine the size of each DRAM bank Set DRAM controller configuration registers to enable DRAM. MEM_MGR_INIT Initialize the POST Memory manager. ZERO_BASE_RAM Clear the 512k of DRAM.
  • Page 67 POST Code Name Description (Hex) CMOS_TEST Clear CMOS diagnostic byte. IF <CMOS battery is dead> THEN Set “bad battery” flag in CMOS IF <CMOS checksum is bad> THEN Set “bad CMOS check” flag in CMOS Checksum CMOS ENDIF CHK_SHUTDOWN Vector to proper shutdown routine (reset).
  • Page 68 POST Code Name Description (Hex) VECTOR_INIT Set interrupt vectors 0-77h to BIOS general interrupt handler. SET_BIOS_INT Set interrupt vectors 0-20h to correct BIOS interrupt handlers. CORE_DEVICE_INIT Initialize all motherboard devices. COPYRIGHT Verify that the Phoenix BIOS copyright message is correct. PCI_OP_INIT Initialize PCI option ROM manager.
  • Page 69 POST Code Name Description (Hex) EISA_INIT IF <EISA support is enabled> THEN Checksum EISA data NVRAM locations. IF <checksum good> THEN Initialize each slot. ELSE Display bad config message. ENDIF ENDIF KB_TEST Check for return code of AA from keyboard self-test, IF <return code not AA>...
  • Page 70 POST Code Name Description (Hex) MEMORY_TEST Determine amount of memory below 1M. Walk a1 through data bus at 80000h. Walk a 0 through data bus at 80000h. Check for stuck address line from 80000h to 8FFFFh. EXT_MEMORY Determine total amount of memory by doing a read/write test.
  • Page 71 POST Code Name Description (Hex) DISP_SHADOW IF <system BIOS ROM shadowed> THEN Display message indicating that the system BIOS ROM is shadowed. ENDIF IF <video BIOS ROM shadowed> THEN Display message indicating that the video BIOS ROM is shadowed. ENDIF DISP_NONDISP Display the starting address of the nondisposable (run time) BIOS.
  • Page 72 POST Code Name Description (Hex) IO_BEFORE IF <integrated super I/O exists> THEN Disable LPT and COM ports on integrated super I/O. ENDIF. CORE_LATE_INIT Late initialization of devices. RS232 Identify and test all COM ports. CONFIG_IDE Configure Fdisk controller. Test and ID parallel ports. PCI_PCC Initialize PnP ISA devices.
  • Page 73 POST Code Name Description (Hex) FLOPPY Test both floppy drives. IF <error detected> THEN Display floppy error message. ENDIF FDISK_FAST_PREINIT Count and store the number of ATA drives in the subsystem. FDISK Initialize the hard disk subsystem and test. IF <error detected> THEN Display hard disk error message.
  • Page 74 POST Code Name Description (Hex) MISC_SHADOW Shadow expansion ROM areas that are enabled from setup. PM_SETUP Setup power management if enabled. SECURITY Initialize Security Engine. IRQS Enable IRQ 0, 1, 2, and 6. FDISK_FAST_INIT2 Check and store the total number of Fast Disks (ATA and SCSI).
  • Page 75 POST Code Name Description (Hex) SETUP_CHECK IF <2 was pressed> THEN Enter Setup. ELSE IF <errors were found> THEN Display “Press 7 or 2" prompt. IF <2 is pressed> THEN Enter Steup. ELSE IF <7 is pressed> THEN Boot. ENDIF ELSE Boot.
  • Page 76 POST Code Name Description (Hex) PASSWORD IF <password enabled> THEN Print message requesting password. IF <password incorrect> THEN Halt. ENDIF ENDIF SYSTEM_INIT Clear the GDT. PREPARE_BOOT Prepare to boot, clear the screen. Initialize DMI header and substructures. INT19 Do INT 19h to load OS. GB - 68...

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