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IanSeylerIanSeyler
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2026
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‎LICENSE‎

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MIT License
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Copyright (c) 2025 Return Infinity
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Copyright (c) 2026 Return Infinity
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Permission is hereby granted, free of charge, to any person obtaining a copy
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of this software and associated documentation files (the "Software"), to deal

‎docs/CREDITS.TXT‎

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===============================================================================
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Pure64 -- a 64-bit loader written in Assembly for x86-64 systems
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Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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===============================================================================
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PROJECT ADMIN (MAIN CODE AND DOCUMENTATION)
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* Ian Seyler -- ian.seyler@returninfinity.com
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DEVELOPMENT AND TESTING
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* Members of OSDev.org
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===============================================================================
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===============================================================================
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Pure64 -- a 64-bit loader written in Assembly for x86-64 systems
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Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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===============================================================================
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PROJECT ADMIN (MAIN CODE AND DOCUMENTATION)
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* Ian Seyler -- ian.seyler@returninfinity.com
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DEVELOPMENT AND TESTING
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* Members of OSDev.org
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===============================================================================

‎src/boot/bios-floppy.asm‎

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; =============================================================================
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; Pure64 MBR -- a 64-bit OS/software loader written in Assembly for x86-64 systems
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; This Master Boot Record will load Pure64 from a pre-defined location on the
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; floppy drive without making use of the file system.
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; Read the 2nd stage boot loader into memory.
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; Load 4 cylinders - 7 sectors
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mov byte [cylinder], 0
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mov byte [cylinder], 0
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mov word [sec_buff], 0x7E00 ; For simplicity load whole cylinder but jump to 0x8000
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call load_sector
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mov byte [head], 1
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mov word [sec_buff], 0xA200
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call load_sector
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mov byte [cylinder], 1
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mov byte [cylinder], 1
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mov byte [head], 0
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mov word [sec_buff], 0xC600
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call load_sector

‎src/boot/bios-novideo.asm‎

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; =============================================================================
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; Pure64 MBR -- a 64-bit OS/software loader written in Assembly for x86-64 systems
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; This Master Boot Record will load Pure64 from a pre-defined location on the
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; hard drive without making use of the file system.

‎src/boot/bios-pxe.asm‎

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; =============================================================================
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; Pure64 PXE Start -- a 64-bit OS/software loader written in Assembly for x86-64 systems
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; This is a stub file for loading Pure64 and a kernel/software package via PXE.
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;

‎src/boot/bios.asm‎

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; =============================================================================
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; Pure64 MBR -- a 64-bit OS/software loader written in Assembly for x86-64 systems
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; This Master Boot Record will load Pure64 from a pre-defined location on the
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; hard drive without making use of the file system.

‎src/boot/uefi.asm‎

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; =============================================================================
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; UEFI loader for Pure64
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; Adapted from https://stackoverflow.com/questions/72947069/how-to-write-hello-world-efi-application-in-nasm
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; and https://github.com/charlesap/nasm-uefi/blob/master/shoe-x64.asm

‎src/fdc/dma.asm‎

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; =============================================================================
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; DMA Driver
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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; Implemented by Isa Isoux -- https://github.com/isoux/BMFLFS
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; The DMA controller performs data transfers:
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; bl = channel
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; bh = 1 = read, 0 = write
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; esi = count
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dma_IO:
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dma_IO:
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; Examine whether it is writing or reading
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; what_mode

‎src/fdc/fdc_64.asm‎

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; =============================================================================
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; Floppy Disk Driver
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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; Implemented by Isa Isoux -- https://github.com/isoux/BMFLFS
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; Here is a minimal simplified version intended only for reading whole floppy
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; Here is a minimal simplified version intended only for reading whole floppy
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; disk into memory or writing back image from memory to whole disk at once.
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; Errors are poorly handled due to the simplicity of the handling, one thing
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; that can be easily noticed is that the disk is damaged and does not load
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; Errors are poorly handled due to the simplicity of the handling, one thing
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; that can be easily noticed is that the disk is damaged and does not load
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; completely.
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; FDC - Floppy Disk Controler

‎src/init/acpi.asm‎

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; =============================================================================
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; Pure64 -- a 64-bit OS/software loader written in Assembly for x86-64 systems
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; Copyright (C) 2008-2025 Return Infinity -- see LICENSE.TXT
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; Copyright (C) 2008-2026 Return Infinity -- see LICENSE.TXT
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;
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; INIT ACPI
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;

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