68 lines
877 B
NASM
68 lines
877 B
NASM
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org 0x7C00
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bits 16
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code_start:
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cli
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jmp 0x0000:initialise_cs
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initialise_cs:
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xor ax, ax
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mov ds, ax
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mov es, ax
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mov fs, ax
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mov gs, ax
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mov ss, ax
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mov sp, 0x7c00
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sti
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mov byte [drive_number], dl
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mov si, LoadingMsg
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call simple_print
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; ****************** Load stage 2 ******************
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mov si, Stage2Msg
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call simple_print
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mov ax, 1
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mov ebx, 0x7e00
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mov cx, 7
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call read_sectors
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jc err
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mov si, DoneMsg
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call simple_print
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jmp 0x7e00
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err:
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mov si, ErrMsg
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call simple_print
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halt:
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hlt
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jmp halt
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;Data
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LoadingMsg db 0x0D, 0x0A, '<qLoader 2>', 0x0D, 0x0A, 0x0A, 0x00
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Stage2Msg db 'stage1: Loading stage2...', 0x00
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ErrMsg db 0x0D, 0x0A, 'Error, system halted.', 0x00
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DoneMsg db ' DONE', 0x0D, 0x0A, 0x00
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times 0xda-($-$$) db 0
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times 6 db 0
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;Includes
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%include 'simple_print.inc'
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%include 'disk.inc'
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drive_number db 0
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times 0x1b8-($-$$) db 0
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times 510-($-$$) db 0
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dw 0xaa55
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