28 lines
620 B
NASM
28 lines
620 B
NASM
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; this offsets all memory addresses in the asm code
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; to be relative to the start of the assembled bytecode
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; in memory, where the BIOS loads it.
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[org 0x7c00]
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[bits 16]
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; store the boot drive - bios puts in dl
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mov [i_global_boot_drive], dl
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jmp main16 ; start the main label
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i_global_boot_drive: db 0
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; Helper label that pops all stack registers and returns
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; Used as a one-line return in service routines
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; e.g. jmp global_return
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g_return:
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popa
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ret
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; Include common code
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%include "print16.asm"
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%include "disk16.asm"
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%include "gdt16.asm"
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%include "switch16.asm"
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%include "kern16.asm"
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%include "print32.asm"
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