386BSD 0.1 development
[unix-history] / usr / src / sys.386bsd / i386 / isa / isa.h
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1/*-
2 * Copyright (c) 1990 The Regents of the University of California.
3 * All rights reserved.
4 *
5 * This code is derived from software contributed to Berkeley by
6 * William Jolitz.
7 *
8 * Redistribution and use in source and binary forms, with or without
9 * modification, are permitted provided that the following conditions
10 * are met:
11 * 1. Redistributions of source code must retain the above copyright
12 * notice, this list of conditions and the following disclaimer.
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
16 * 3. All advertising materials mentioning features or use of this software
17 * must display the following acknowledgement:
18 * This product includes software developed by the University of
19 * California, Berkeley and its contributors.
20 * 4. Neither the name of the University nor the names of its contributors
21 * may be used to endorse or promote products derived from this software
22 * without specific prior written permission.
23 *
24 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
25 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
26 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
27 * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
28 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
29 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
30 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
31 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
32 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
33 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * SUCH DAMAGE.
35 *
36 * @(#)isa.h 5.7 (Berkeley) 5/9/91
37 */
38
39/*
40 * ISA Bus conventions
41 */
42
43#ifndef LOCORE
44unsigned char inb(), rtcin();
45void outb();
46extern unsigned int atdevbase; /* offset in virtual memory of ISA io mem */
47void sysbeep(int,int);
48unsigned kbd_8042cmd(int);
49#endif
50
51
52/*
53 * Input / Output Port Assignments
54 */
55
56#ifndef IO_BEGIN
57#define IO_ISABEGIN 0x000 /* 0x000 - Beginning of I/O Registers */
58
59 /* CPU Board */
60#define IO_DMA1 0x000 /* 8237A DMA Controller #1 */
61#define IO_ICU1 0x020 /* 8259A Interrupt Controller #1 */
62#define IO_TIMER1 0x040 /* 8252 Timer #1 */
63#define IO_TIMER2 0x048 /* 8252 Timer #2 */
64#define IO_KBD 0x060 /* 8042 Keyboard */
65#define IO_RTC 0x070 /* RTC */
66#define IO_NMI IO_RTC /* NMI Control */
67#define IO_DMAPG 0x080 /* DMA Page Registers */
68#define IO_ICU2 0x0A0 /* 8259A Interrupt Controller #2 */
69#define IO_DMA2 0x0C0 /* 8237A DMA Controller #2 */
70#define IO_NPX 0x0F0 /* Numeric Coprocessor */
71
72 /* Cards */
73 /* 0x100 - 0x16F Open */
74
75#define IO_WD2 0x170 /* Secondary Fixed Disk Controller */
76
77 /* 0x178 - 0x1EF Open */
78
79#define IO_WD1 0x1f0 /* Primary Fixed Disk Controller */
80#define IO_GAME 0x200 /* Game Controller */
81
82 /* 0x208 - 0x277 Open */
83
84#define IO_LPT2 0x278 /* Parallel Port #2 */
85
86 /* 0x280 - 0x2F7 Open */
87
88#define IO_COM2 0x2f8 /* COM2 i/o address */
89
90 /* 0x300 - 0x36F Open */
91
92#define IO_FD2 0x370 /* secondary base i/o address */
93#define IO_LPT1 0x378 /* Parallel Port #1 */
94
95 /* 0x380 - 0x3AF Open */
96
97#define IO_MDA 0x3B0 /* Monochome Adapter */
98#define IO_LPT3 0x3BC /* Monochome Adapter Printer Port */
99#define IO_VGA 0x3C0 /* E/VGA Ports */
100#define IO_CGA 0x3D0 /* CGA Ports */
101
102 /* 0x3E0 - 0x3EF Open */
103
104#define IO_FD1 0x3f0 /* primary base i/o address */
105#define IO_COM1 0x3f8 /* COM1 i/o address */
106
107#define IO_ISAEND 0x3FF /* - 0x3FF End of I/O Registers */
108#endif IO_ISABEGIN
109
110/*
111 * Input / Output Memory Physical Addresses
112 */
113
114#ifndef IOM_BEGIN
115#define IOM_BEGIN 0x0a0000 /* Start of I/O Memory "hole" */
116#define IOM_END 0x100000 /* End of I/O Memory "hole" */
117#define IOM_SIZE (IOM_END - IOM_BEGIN)
118#endif IOM_BEGIN
119
120/*
121 * RAM Physical Address Space (ignoring the above mentioned "hole")
122 */
123
124#ifndef RAM_BEGIN
125#define RAM_BEGIN 0x0000000 /* Start of RAM Memory */
126#define RAM_END 0x1000000 /* End of RAM Memory */
127#define RAM_SIZE (RAM_END - RAM_BEGIN)
128#endif RAM_BEGIN
129
130/*
131 * Oddball Physical Memory Addresses
132 */
133#ifndef COMPAQ_RAMRELOC
134#define COMPAQ_RAMRELOC 0x80c00000 /* Compaq RAM relocation/diag */
135#define COMPAQ_RAMSETUP 0x80c00002 /* Compaq RAM setup */
136#define WEITEK_FPU 0xC0000000 /* WTL 2167 */
137#define CYRIX_EMC 0xC0000000 /* Cyrix EMC */
138#endif COMPAQ_RAMRELOC