mirror of
https://github.com/Ed94/bare_x86.git
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59 lines
1.0 KiB
ArmAsm
59 lines
1.0 KiB
ArmAsm
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; Hello world.
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; x86
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; 16-bit - Real Mode, V86 Mode
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%include "AAL.x86.S"
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; 16-Bit Mode
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[BITS 16]
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; The ORG directive specifies the starting address of a segment
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[ORG Mem_BootSector_Start]
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; A label to the address in memory
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; Auto calculated by the assembler
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start :
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textmode_ClearScreen :
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; Params
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mov AH, Video_SetMode
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mov AL, VideoMode_Text_80x25
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; Call Interrupt
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int VideoService
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; Set Data segment to the text mode's memory buffer
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mov AX, Video_Text_MemBuffer
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mov DS, AX
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%macro SetChar 2
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; word : 16-bit (2-byte) increments
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; [offset] : specifies offset in Data Segment (DS)
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; Character
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mov word [%1 * 2 ], %2
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; Attributes - Low: Black, High: White
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mov word [%1 * 2 + 1], 0x0F
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%endmacro
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SetChar 0x00, 'H'
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SetChar 0x01, 'e'
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SetChar 0x02, 'l'
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SetChar 0x03, 'l'
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SetChar 0x04, 'o'
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SetChar 0x05, ' '
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SetChar 0x06, 'W'
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SetChar 0x07, 'o'
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SetChar 0x08, 'r'
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SetChar 0x09, 'l'
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SetChar 0x0A, 'd'
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hang :
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jmp short hang
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; Byte pad 512 bytes (zeroed)
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times 510-$+start db 0
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; Master Boot Record signature
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db 0x55
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db 0xAA
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