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1.1 root 1: /*
2: * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
3: *
4: * @APPLE_LICENSE_HEADER_START@
5: *
6: * Portions Copyright (c) 1999 Apple Computer, Inc. All Rights
7: * Reserved. This file contains Original Code and/or Modifications of
8: * Original Code as defined in and that are subject to the Apple Public
9: * Source License Version 1.1 (the "License"). You may not use this file
10: * except in compliance with the License. Please obtain a copy of the
11: * License at http://www.apple.com/publicsource and read it before using
12: * this file.
13: *
14: * The Original Code and all software distributed under the License are
15: * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
16: * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
17: * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
18: * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT. Please see the
19: * License for the specific language governing rights and limitations
20: * under the License.
21: *
22: * @APPLE_LICENSE_HEADER_END@
23: */
24:
25: /*
26: * Copyright 1996 1995 by Open Software Foundation, Inc. 1997 1996 1995 1994 1993 1992 1991
27: * All Rights Reserved
28: *
29: * Permission to use, copy, modify, and distribute this software and
30: * its documentation for any purpose and without fee is hereby granted,
31: * provided that the above copyright notice appears in all copies and
32: * that both the copyright notice and this permission notice appear in
33: * supporting documentation.
34: *
35: * OSF DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
36: * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
37: * FOR A PARTICULAR PURPOSE.
38: *
39: * IN NO EVENT SHALL OSF BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
40: * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
41: * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
42: * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
43: * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
44: *
45: */
46: /*
47: * Copyright 1996 1995 by Apple Computer, Inc. 1997 1996 1995 1994 1993 1992 1991
48: * All Rights Reserved
49: *
50: * Permission to use, copy, modify, and distribute this software and
51: * its documentation for any purpose and without fee is hereby granted,
52: * provided that the above copyright notice appears in all copies and
53: * that both the copyright notice and this permission notice appear in
54: * supporting documentation.
55: *
56: * APPLE COMPUTER DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS SOFTWARE
57: * INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
58: * FOR A PARTICULAR PURPOSE.
59: *
60: * IN NO EVENT SHALL APPLE COMPUTER BE LIABLE FOR ANY SPECIAL, INDIRECT, OR
61: * CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM
62: * LOSS OF USE, DATA OR PROFITS, WHETHER IN ACTION OF CONTRACT,
63: * NEGLIGENCE, OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION
64: * WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
65: */
66: /*
67: * MKLINUX-1.0DR2
68: */
69: /*
70: File: via6522.h
71:
72: Contains: xxx put contents here xxx
73:
74: Written by: xxx put writers here xxx
75:
76: Copyright: � 1993, 1995 by Apple Computer, Inc., all rights reserved.
77:
78: Change History (most recent first):
79:
80: <1> 2/22/95 AM First checked in.
81: <1> 04/04/94 MRN First checked in.
82:
83: */
84:
85: /*
86: * Copyright 1987-91 Apple Computer, Inc.
87: * All Rights Reserved.
88: */
89:
90: #ifndef __VIA6522_H__
91: #define __VIA6522_H__
92:
93: /*
94: * Synertek SY6522 VIA Versatile Interface Adapter
95: */
96:
97: /*
98: * This has been modified to address BOTH the via and RBV registers,
99: * because we know that both chips ignore part of the address, thus
100: * only responding correctly. It's ugly, but the ROM does it...
101: */
102:
103: #if defined(powerc) || defined (__powerc)
104: #pragma options align=mac68k
105: #endif
106:
107: typedef struct via6522Regs /* VIA / RBV address */
108: {
109: volatile unsigned char vBufB; /* 0000/0000 register b */
110: volatile unsigned char RvExp; /* 0001 RBV future expansion */
111: volatile unsigned char RvSlotIFR; /* 0002 RBV Slot interrupts reg. */
112: volatile unsigned char RvIFR; /* 0003 RBV interrupt flag reg. */
113: unsigned char jnk0[ 12 ];
114:
115: volatile unsigned char RvMonP; /* xxxx/0010 RBV video monitor type */
116: volatile unsigned char RvChpT; /* xxxx/0011 RBV test mode register */
117: volatile unsigned char RvSlotIER; /* xxxx/0012 RBV slot interrupt enables */
118: volatile unsigned char RvIER; /* xxxx/0013 RBV interrupt flag enable reg */
119: unsigned char jnk1[ 0x1FF - 0x13 ];
120:
121: volatile unsigned char vBufAH; /* 0200 buffer a (with handshake). */
122: unsigned char jnk2[ 0x1FF ]; /* Dont use! Here only for completeness */
123:
124: volatile unsigned char vDIRB; /* 0400 data direction register B */
125: unsigned char jnk25[ 0x1FF ];
126:
127: volatile unsigned char vDIRA; /* 0600 data direction register A */
128: unsigned char jnk3[ 0x1FF ];
129:
130: volatile unsigned char vT1C; /* 0800 timer one low */
131: unsigned char jnk4[ 0x1FF ];
132:
133: volatile unsigned char vT1CH; /* 0A00 timer one high */
134: unsigned char jnk5[ 0x1FF ];
135:
136: volatile unsigned char vT1L; /* 0C00 timer one latches low */
137: unsigned char jnk6[ 0x1FF ];
138:
139: volatile unsigned char vT1LH; /* 0E00 timer one latches high */
140: unsigned char jnk7[ 0x1FF ];
141:
142: volatile unsigned char vT2C; /* 1000 timer 2 low */
143: unsigned char jnk8[ 0x1FF ];
144:
145: volatile unsigned char vT2CH; /* 1200 timer two counter high */
146: unsigned char jnk9[ 0x1FF ];
147:
148: volatile unsigned char vSR; /* 1400 shift register */
149: unsigned char jnka[ 0x1FF ];
150:
151: volatile unsigned char vACR; /* 1600 auxilary control register */
152: unsigned char jnkb[ 0x1FF ];
153:
154: volatile unsigned char vPCR; /* 1800 peripheral control register */
155: unsigned char jnkc[ 0x1FF ];
156:
157: volatile unsigned char vIFR; /* 1A00 interrupt flag register */
158: unsigned char jnkd[ 0x1FF ];
159:
160: volatile unsigned char vIER; /* 1C00 interrupt enable register */
161: unsigned char jnkf[ 0x1FF ];
162:
163: volatile unsigned char vBufA; /* 1E00 register A, read and write */
164: } via6522Regs;
165:
166: #if defined(powerc) || defined(__powerc)
167: #pragma options align=reset
168: #endif
169:
170:
171: /* Register B contents */
172:
173: #define VRB_POWEROFF 0x04 /* disk head select */
174: #define RBV_POWEROFF VRB_POWEROFF
175: #define VRB_BUSLOCK 0x02 /* NuBus Transactions are locked */
176:
177:
178: /* Register A contents */
179:
180: #define VRA_DRIVE 0x10 /* drive select */
181: #define VRA_HEAD 0x20 /* disk head select */
182:
183:
184: /* Auxillary control register contents */
185:
186: #define VAC_PAENL 0x01 /* Enable latch for PA */
187: #define VAC_PADISL 0x00 /* Disable latch for PA */
188: #define VAC_PBENL 0x02 /* Enable latch for PA */
189: #define VAC_PBDISL 0x00 /* Disable latch for PA */
190: #define VAC_SRDIS 0x00 /* Shift Reg Disabled */
191: #define VAC_SRMD1 0x04 /* Shift In under control of T2 */
192: #define VAC_SRMD2 0x08 /* Shift In under control of Phase 2 */
193: #define VAC_SRMD3 0x0C /* Shift in under control of Ext Clk */
194: #define VAC_SRMD4 0x10 /* Shift Out free running at T2 rate */
195: #define VAC_SRMD5 0x14 /* Shift Out under control of T2 */
196: #define VAC_SRMD6 0x18 /* Shift Out under control of theta2 */
197: #define VAC_SRMD7 0x1C /* Shift Out under control of Ext Clk */
198: #define VAC_T2CTL 0x20 /* Timer two, control */
199: #define VAC_T2TI 0x00 /* Timer Two, Timed Interrupt */
200: #define VAC_T2CD 0x20 /* Timer Two, count down with pulses on PB6 */
201: #define VAC_T1CONT 0x40 /* Timer one, continous counting */
202: #define VAC_T11SHOT 0x00 /* Timer One, one shot output */
203: #define VAC_T1PB7 0x80 /* Timer one, drives PB7 */
204: #define VAC_T1PB7DIS 0x00 /* Timer one, drives PB7 disabled */
205:
206:
207: /* Interrupt enable register contents */
208:
209: #define VIE_CA2 0x01 /* interrupt on CA2 */
210: #define VIE_CA1 0x02 /* interrupt on CA1 */
211: #define VIE_SR 0x04 /* Shift Register */
212: #define VIE_CB2 0x08 /* interrupt on CB2 */
213: #define VIE_CB1 0x10 /* interrupt on CB1 */
214: #define VIE_TIM2 0x20 /* timer 2 interrupt */
215: #define VIE_TIM1 0x40 /* timer 1 interrupt */
216: #define VIE_SET 0x80 /* Set interrupt bits if this is on */
217: #define VIE_CLEAR 0x00 /* Clear bits if used */
218:
219: #define VIE_ALL ( VIE_TIM1 | VIE_TIM2 | VIE_CB1 | VIE_CB2 | VIE_SR | VIE_CA1 | VIE_CA2 )
220:
221:
222: /* VIA Data Direction Register Contents */
223:
224: #define VDR_P7_O 0x80 /* P7 is output */
225: #define VDR_P7_I 0x00 /* P7 is input */
226: #define VDR_P6_O 0x40 /* P6 is output */
227: #define VDR_P6_I 0x00 /* P6 is input */
228: #define VDR_P5_O 0x20 /* P5 is output */
229: #define VDR_P5_I 0x00 /* P5 is input */
230: #define VDR_P4_O 0x10 /* P4 is output */
231: #define VDR_P4_I 0x00 /* P4 is input */
232: #define VDR_P3_O 0x08 /* P3 is output */
233: #define VDR_P3_I 0x00 /* P3 is input */
234: #define VDR_P2_O 0x04 /* P2 is output */
235: #define VDR_P2_I 0x00 /* P2 is input */
236: #define VDR_P1_O 0x02 /* P1 is output */
237: #define VDR_P1_I 0x00 /* P1 is input */
238: #define VDR_P0_O 0x01 /* P0 is output */
239: #define VDR_P0_I 0x00 /* P0 is input */
240:
241:
242: /* VIA1 Register A contents where they differ from standard VIA1 */
243:
244: #define RBV_BURNIN 0x01 /* burnin flag */
245: #define RBV_CPUID0 0x02 /* CPU id bit 0 */
246: #define RBV_CPUID1 0x04 /* CPU id bit 1 */
247: #define RBV_CPUID2 0x10 /* CPU id bit 2 */
248: #define RBV_CPUID3 0x40 /* CPU id bit 3 */
249:
250:
251: /* VIA1 Register B contents where they differ from standard VIA1 */
252:
253: #define RBV_PARDIS 0x40 /* disable parity */
254: #define RBV_PAROK 0x80 /* parity OK */
255:
256: #define EVRB_XCVR 0x08 /* XCVR_SESSION* */
257: #define EVRB_FULL 0x10 /* VIA_FULL */
258: #define EVRB_SYSES 0x20 /* SYS_SESSION */
259: #define EVRB_AUXIE 0x00 /* Enable A/UX Interrupt Scheme */
260: #define EVRB_AUXID 0x40 /* Disable A/UX Interrupt Scheme */
261: #define EVRB_SFTWRIE 0x00 /* Software Interrupt ReQuest */
262: #define EVRB_SFTWRID 0x80 /* Software Interrupt ReQuest */
263:
264:
265: /* VIA2 Register A contents where they differ from standard VIA2 */
266:
267: #define RBV_SZEROIRQ 0x40 /* slot 0 irq */
268: #define EVRA_ENETIRQ 0x01 /* Ethernet irq */
269: #define EVRA_VIDIRQ 0x40 /* Video irq */
270:
271:
272: /* VIA2 Register B contents where they differ from standard VIA2 */
273:
274: #define RBV_CDIS 0x01 /* disable external cache */
275: #define RBV_CFLUSH 0x08 /* flush external cache */
276: #define EVRB_LED 0x10 /* LED */
277: #define RBV_PARODD 0x80 /* 1 for odd, 0 for even */
278:
279:
280: /* Video monitor parameters: */
281: #define RBV_DEPTH 0x07 /* bits per pixel: 000=1,001=2,010=4,011=8 */
282: #define RBV_MONID 0x38 /* monitor type as below */
283: #define RBV_VIDOFF 0x40 /* 1 turns off onboard video */
284:
285:
286: /* Supported video monitor types: */
287:
288: #define MON_15BW ( 1 << 3 ) /* 15" BW portrait */
289: #define MON_IIGS ( 2 << 3 ) /* modified IIGS monitor */
290: #define MON_15RGB ( 5 << 3 ) /* 15" RGB portrait */
291: #define MON_12OR13 ( 6 << 3 ) /* 12" BW or 13" RGB */
292: #define MON_NONE ( 7 << 3 ) /* No monitor attached */
293:
294: #endif /* __VIA6522_H__ */
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