38 lines
458 B
ArmAsm
38 lines
458 B
ArmAsm
[BITS 32]
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PIC1_CMD equ 0x20
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PIC1_DATA equ 0x21
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PIC2_CMD equ 0xA0
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PIC2_DATA equ 0xA1
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section .text
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global setup_pic
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setup_pic:
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mov al, 0x11
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out PIC1_CMD, al
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out PIC2_CMD, al
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mov al, 0x20
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out PIC1_DATA, al
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mov al, 0x28
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out PIC2_DATA, al
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mov al, 4
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out PIC1_DATA, al
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mov al, 2
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out PIC2_DATA, al
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; mask all
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mov al, 0xFF
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out PIC1_DATA, al
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out PIC2_DATA, al
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ret
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global pic_eoi
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pic_eoi:
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mov al, 0x20
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out PIC2_CMD, al
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out PIC1_CMD, al
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ret
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