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5-26 Chapter 5: Setup Interrupts (7401-26xx/46xx BIOS Version 2.3.x.x) The following table lists the default settings. To resolve any conflicts, refer to the notes that follow the table. IRQ System Resource NMI I/O channel check 0 Reserved, interval timer 1 Reserved, keyboard buffer full 2 Reserved, cascade interrupt 3 Communications port (COM 2) or Port B 4 Communications port (COM 1) or Port A 5 Communications port (COM 3) or Port C 6 MSR 7 Parallel port 1 8 Real time clock 9 System monitor 10 Audio, LAN 11 Communications port (COM 4) or Port D 12 PS/2 compatible mouse port 13 Math coprocessor 14 On‐board IDE 15 Secondary IDE The Mouse uses IRQ 12 and so does the Touch Screen. Since the Touch Screen serves as a mouse, it cannot be freed up unless you donʹt want to use either. The Audio and LAN share IRQ 10, and since these are PCI IRQs, they can move around depending on what is available in the system.
Chapter 5: Setup 5-27 Memory Map (7401-26xx/46xx BIOS Version 2.3.x.x) The following table details the memory map for 7401‐26xx/46xx terminals BIOS Version 2.3.1.2 (Pentium III/Celeron processors with ACPI). The ESCD area from ED000‐EDFFF is not available for use as an Upper Memory Block (UMB) by memory managers. The area from E0000‐EBFFF is currently not used by the BIOS and is available for use as UMB by memory managers. Parts of this area may be used by future versions of the BIOS to add increased functionality. Address Range (hex) Size Description FECFF000‐FECFF01B 27 LAN PXE ROM 100000‐10000000 255 MB Extended memory F0000‐FFFFF 64 kB System BIOS EE000‐EFFFF 8 kB Main BIOS (available as UMB) ED000‐EDFFF 4 kB ESCD (plug and play configuration area) EC000‐ECFFF 4 kB OEM (available as UMB) E0000‐EBFFF 48 kB BIOS Reserved (currently available as UMB) D0000‐DFFFF 64 kB Available HI DOS memory CE000‐CFFFF 8 kB Flash Disk (optional) CC000‐CDFFF 8 kB NCR Trigantor MSR (optional) C0000‐CBFFF 48 kB Onboard video BIOS A0000‐BFFFF 128 kB Reserved for video memory 9FC00‐9FFFF 1 kB Extended BIOS Data (moveable by QEMM, 386MAX) 80000‐9FBFF 127 kB Extended conventional 00000‐7FFFF 512 kB Conventional
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NCR NCR EasyPoint 7401 Release 2.5
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i Safety Warnings Preface Audience
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iii Grounding Instructions In the e
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v Table of Contents Chapter 1: 7401
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vii Compact Flash (Optional).......
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ix Internal Speaker ...............
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xi Calibration Using MicroTouch (Wi
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xiii Setting Boot Options .........
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xv NCR 7401‐21xx/31xx NT Operatin
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xvii Revision Record Issue Date Rem
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xix IEC & EN Laser Product Label CA
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Chapter 1: 7401-2xxx/3xxx Product O
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Chapter 3: 7401-2xxx/3xxx Hardware
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Chapter 4: 7401-4xxx Hardware Insta
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Page 218 and 219: 5-24 Chapter 5: Setup QuickBoot Mod
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8-6 Chapter 8: NCR 7401 7890/7892 S
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A-2 Appendix A: Cables Corporate ID
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B-2 Appendix B: Feature Kits 2. Sel
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B-4 Appendix B: Feature Kits Kit Nu
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B-6 Appendix B: Feature Kits Kit Nu
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Index-2 Setting boot options, 5‐6
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Index-4 OS Recovery from a Larger D
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