2 * Copyright (c) 1990 The Regents of the University of California.
5 * This code is derived from software contributed to Berkeley by
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9 * modification, are permitted provided that the following conditions
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 * 4. Neither the name of the University nor the names of its contributors
17 * may be used to endorse or promote products derived from this software
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20 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
21 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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32 * from: @(#)isa.h 5.7 (Berkeley) 5/9/91
36 #ifndef _PC98_PC98_PC98_H_
37 #define _PC98_PC98_PC98_H_
39 /* BEWARE: Included in both assembler and C code */
42 * PC98 Bus conventions
43 * modified for PC9801 by A.Kojima F.Ukai M.Ishii
44 * Kyoto University Microcomputer Club (KMC)
48 * Input / Output Port Assignments
51 #define IO_ISABEGIN 0x000 /* 0x000 - Beginning of I/O Registers */
53 /* PC98 IO address ... very dirty (^_^; */
55 #define IO_ICU1 0x000 /* 8259A Interrupt Controller #1 */
56 #define IO_ICU2 0x008 /* 8259A Interrupt Controller #2 */
57 #define IO_RTC 0x020 /* 4990A RTC */
58 #define IO_SYSPORT 0x031 /* 8255A System Port */
59 #define IO_KBD 0x041 /* 8251A Keyboard */
60 #define IO_COM2 0x0B1 /* 8251A RS232C serial I/O (ext) */
61 #define IO_COM3 0x0B9 /* 8251A RS232C serial I/O (ext) */
62 #define IO_FDPORT 0x0BE /* FD I/F port (1M<->640K,EMTON) */
63 #define IO_WD1_EPSON 0x80 /* 386note Hard disk controller */
64 #define IO_ISAEND 0xFFFF /* - 0x3FF End of I/O Registers */
65 #endif /* !IO_ISABEGIN */
68 * Input / Output Port Sizes - these are from several sources, and tend
69 * to be the larger of what was found, ie COM ports can be 4, but some
70 * boards do not fully decode the address, thus 8 ports are used.
75 #define IO_KBDSIZE 16 /* 8042 Keyboard controllers */
76 #define IO_LPTSIZE 8 /* LPT controllers, some use only 4 */
77 #define IO_LPTSIZE_EXTENDED 8 /* "Extended" LPT controllers */
78 #define IO_LPTSIZE_NORMAL 4 /* "Normal" LPT controllers */
80 #endif /* !IO_ISASIZES */
83 * Input / Output Memory Physical Addresses
86 #define IOM_BEGIN 0x0A0000 /* Start of I/O Memory "hole" */
87 #define IOM_END 0x100000 /* End of I/O Memory "hole" */
88 #define IOM_SIZE (IOM_END - IOM_BEGIN)
89 #endif /* !IOM_BEGIN */
92 * RAM Physical Address Space (ignoring the above mentioned "hole")
95 #define RAM_BEGIN 0x0000000 /* Start of RAM Memory */
96 #ifdef EPSON_BOUNCEDMA
97 #define RAM_END 0x0f00000 /* End of EPSON GR?? RAM Memory */
99 #define RAM_END 0x1000000 /* End of RAM Memory */
101 #define RAM_SIZE (RAM_END - RAM_BEGIN)
102 #endif /* !RAM_BEGIN */
104 #endif /* !_PC98_PC98_PC98_H_ */