A poorly written OS for the x86 arch. (WIP)
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%include "BIOS_equ.asm"
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mov ah, 0x0e ; enter teletype mode (BIOS)
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mov al, "e"
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int BIOS_INT
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mov al, "O"
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int BIOS_INT
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mov al, "S"
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int BIOS_INT
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mov al, 10 ; linebreak
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int BIOS_INT
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; ALPHABET PRINT
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mov al, 64 ; one less than A since we are printing in a loop and it increments before sys interupt
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loop:
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inc al ; move to next char
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int BIOS_INT ; bios interupt to print it
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push al ; push al onto stack
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mov al, 10 ; ASCII linebreak
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int BIOS_INT
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pop al ; return to char
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cmp al, 91 ; 26 letters in english alphabet (65 + 26)
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jl loop ; if al < 65+26: jmp loop
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jmp $
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times 510-($-$$) db 0
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db 0x55, 0xaa
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