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pic8259.h
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1 /*******************************************************************************/
2 /* © Université de Lille, The Pip Development Team (2015-2021) */
3 /* */
4 /* This software is a computer program whose purpose is to run a minimal, */
5 /* hypervisor relying on proven properties such as memory isolation. */
6 /* */
7 /* This software is governed by the CeCILL license under French law and */
8 /* abiding by the rules of distribution of free software. You can use, */
9 /* modify and/ or redistribute the software under the terms of the CeCILL */
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32 /*******************************************************************************/
33 
39 #ifndef PIC8259_H
40 #define PIC8259_H
41 
42 #define PIC1 0x20 /* IO base address for master PIC */
43 #define PIC2 0xA0 /* IO base address for slave PIC */
44 #define PIC1_COMMAND PIC1
45 #define PIC1_DATA (PIC1+1)
46 #define PIC2_COMMAND PIC2
47 #define PIC2_DATA (PIC2+1)
48 #define ICW1_ICW4 0x01 /* ICW4 (not) needed */
49 #define ICW1_SINGLE 0x02 /* Single (cascade) mode */
50 #define ICW1_INTERVAL4 0x04 /* Call address interval 4 (8) */
51 #define ICW1_LEVEL 0x08 /* Level triggered (edge) mode */
52 #define ICW1_INIT 0x10 /* Initialization - required! */
53 
54 #define ICW4_8086 0x01 /* 8086/88 (MCS-80/85) mode */
55 #define ICW4_AUTO 0x02 /* Auto (normal) EOI */
56 #define ICW4_BUF_SLAVE 0x08 /* Buffered mode/slave */
57 #define ICW4_BUF_MASTER 0x0C /* Buffered mode/master */
58 #define ICW4_SFNM 0x10 /* Special fully nested (not) */
59 #define PIC_EOI 0x20
60 
61 #endif
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