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[org 0x7c00] ; bootsector
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; Save the boot drive index
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mov [BOOT_DRIVE], dl
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; Move the stack pointer somewhere safe
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mov bp, 0x8000 ; move it to 0x8000
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mov sp, bp
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; Print the welcome string
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mov bx, welcome_string
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call println
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; Read second sector (outside bootsector)
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mov bx, 0x9000 ; LOAD LOCATION
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mov dh, 2 ; SECTOR-COUNT
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mov dl, [BOOT_DRIVE] ; DISK-INDEX
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call disk_read
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; Print out whatever bloated data that was read
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mov dx, [0x9000]
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call print_hex
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mov bx, [ASCII_END]
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call println
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mov dx, [0x9000 + 512] ; read from second sector too
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call print_hex
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jmp $ ; inf loop
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%include "equ/ascii.asm"
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%include "bios.asm"
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welcome_string: db "e Operating-System (eOS)", ASCII_CARRIAGE_RETURN, ASCII_LINEBREAK, "Version 2021 0.0", ASCII_END
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BOOT_DRIVE: db 0
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%include "pm.asm"
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; Bootsector
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times 510-($-$$) db 0
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dw 0xaa55 ; magic BIOS numbers
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; After bootsector
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times 256 dw 0xEEEE
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times 256 dw 0xAAAA
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