/[gxemul]/trunk/src/devices/dev_adb.c
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Annotation of /trunk/src/devices/dev_adb.c

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Revision 34 - (hide annotations)
Mon Oct 8 16:21:17 2007 UTC (16 years, 6 months ago) by dpavlin
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File size: 11500 byte(s) 
++ trunk/HISTORY	(local)
$Id: HISTORY,v 1.1480 2007/02/19 01:34:42 debug Exp $
20061029	Changing usleep(1) calls in the debugger to usleep(10000)
20061107	Adding a new disk image option (-d o...) which sets the ISO9660
		filesystem base offset; also making some other hacks to allow
		NetBSD/dreamcast and homebrew demos/games to boot directly
		from a filesystem image.
		Moving Dreamcast-specific stuff in the documentation to its
		own page (dreamcast.html).
		Adding a border to the Dreamcast PVR framebuffer.
20061108	Adding a -T command line option (again?), for halting the
		emulator on unimplemented memory accesses.
20061109	Continuing on various SH4 and Dreamcast related things.
		The emulator should now halt on more unimplemented device
		accesses, instead of just printing a warning, forcing me to
		actually implement missing stuff :)
20061111	Continuing on SH4 and Dreamcast stuff.
		Adding a bogus Landisk (SH4) machine mode.
20061112	Implementing some parts of the Dreamcast GDROM device. With
		some ugly hacks, NetBSD can (barely) mount an ISO image.
20061113	NetBSD/dreamcast now starts booting from the Live CD image,
		but crashes randomly quite early on in the boot process.
20061122	Beginning on a skeleton interrupt.h and interrupt.c for the
		new interrupt subsystem.
20061124	Continuing on the new interrupt system; taking the first steps
		to attempt to connect CPUs (SuperH and MIPS) and devices
		(dev_cons and SH4 timer interrupts) to it. Many things will
		probably break from now on.
20061125	Converting dev_ns16550, dev_8253 to the new interrupt system.
		Attempting to begin to convert the ISA bus.
20061130	Incorporating a patch from Brian Foley for the configure
		script, which checks for X11 libs in /usr/X11R6/lib64 (which
		is used on some Linux systems).
20061227	Adding a note in the man page about booting from Dreamcast
		CDROM images (i.e. that no external kernel is needed).
20061229	Continuing on the interrupt system rewrite: beginning to
		convert more devices, adding abort() calls for legacy interrupt
		system calls so that everything now _has_ to be rewritten!
		Almost all machine modes are now completely broken.
20061230	More progress on removing old interrupt code, mostly related
		to the ISA bus + devices, the LCA bus (on AlphaBook1), and
		the Footbridge bus (for CATS). And some minor PCI stuff.
		Connecting the ARM cpu to the new interrupt system.
		The CATS, NetWinder, and QEMU_MIPS machine modes now work with
		the new interrupt system :)
20061231	Connecting PowerPC CPUs to the new interrupt system.
		Making PReP machines (IBM 6050) work again.
		Beginning to convert the GT PCI controller (for e.g. Malta
		and Cobalt emulation). Some things work, but not everything.
		Updating Copyright notices for 2007.
20070101	Converting dev_kn02 from legacy style to devinit; the 3max
		machine mode now works with the new interrupt system :-]
20070105	Beginning to convert the SGI O2 machine to the new interrupt
		system; finally converting O2 (IP32) devices to devinit, etc.
20070106	Continuing on the interrupt system redesign/rewrite; KN01
		(PMAX), KN230, and Dreamcast ASIC interrupts should work again,
		moving out stuff from machine.h and devices.h into the
		corresponding devices, beginning the rewrite of i80321
		interrupts, etc.
20070107	Beginning on the rewrite of Eagle interrupt stuff (PReP, etc).
20070117	Beginning the rewrite of Algor (V3) interrupts (finally
		changing dev_v3 into devinit style).
20070118	Removing the "bus" registry concept from machine.h, because
		it was practically meaningless.
		Continuing on the rewrite of Algor V3 ISA interrupts.
20070121	More work on Algor interrupts; they are now working again,
		well enough to run NetBSD/algor. :-)
20070122	Converting VR41xx (HPCmips) interrupts. NetBSD/hpcmips
		can be installed using the new interrupt system :-)
20070123	Making the testmips mode work with the new interrupt system.
20070127	Beginning to convert DEC5800 devices to devinit, and to the
		new interrupt system.
		Converting Playstation 2 devices to devinit, and converting
		the interrupt system. Also fixing a severe bug: the interrupt
		mask register on Playstation 2 is bitwise _toggled_ on writes.
20070128	Removing the dummy NetGear machine mode and the 8250 device
		(which was only used by the NetGear machine).
		Beginning to convert the MacPPC GC (Grand Central) interrupt
		controller to the new interrupt system.
		Converting Jazz interrupts (PICA61 etc.) to the new interrupt
		system. NetBSD/arc can be installed again :-)
		Fixing the JAZZ timer (hardcoding it at 100 Hz, works with
		NetBSD and it is better than a completely dummy timer as it
		was before).
		Converting dev_mp to the new interrupt system, although I
		haven't had time to actually test it yet.
		Completely removing src/machines/interrupts.c, cpu_interrupt
		and cpu_interrupt_ack in src/cpu.c, and
		src/include/machine_interrupts.h! Adding fatal error messages
		+ abort() in the few places that are left to fix.
		Converting dev_z8530 to the new interrupt system.
		FINALLY removing the md_int struct completely from the
		machine struct.
		SH4 fixes (adding a PADDR invalidation in the ITLB replacement
		code in memory_sh.c); the NetBSD/dreamcast LiveCD now runs
		all the way to the login prompt, and can be interacted with :-)
		Converting the CPC700 controller (PCI and interrupt controller
		for PM/PPC) to the new interrupt system.
20070129	Fixing MACE ISA interrupts (SGI IP32 emulation). Both NetBSD/
		sgimips' and OpenBSD/sgi's ramdisk kernels can now be
		interacted with again.
20070130	Moving out the MIPS multi_lw and _sw instruction combinations
		so that they are auto-generated at compile time instead.
20070131	Adding detection of amd64/x86_64 hosts in the configure script,
		for doing initial experiments (again :-) with native code
		generation.
		Adding a -k command line option to set the size of the dyntrans
		cache, and a -B command line option to disable native code
		generation, even if GXemul was compiled with support for
		native code generation for the specific host CPU architecture.
20070201	Experimenting with a skeleton for native code generation.
		Changing the default behaviour, so that native code generation
		is now disabled by default, and has to be enabled by using
		-b on the command line.
20070202	Continuing the native code generation experiments.
		Making PCI interrupts work for Footbridge again.
20070203	More native code generation experiments.
		Removing most of the native code generation experimental code,
		it does not make sense to include any quick hacks like this.
		Minor cleanup/removal of some more legacy MIPS interrupt code.
20070204	Making i80321 interrupts work again (for NetBSD/evbarm etc.),
		and fixing the timer at 100 Hz.
20070206	Experimenting with removing the wdc interrupt slowness hack.
20070207	Lowering the number of dyntrans TLB entries for MIPS from
		192 to 128, resulting in a minor speed improvement.
		Minor optimization to the code invalidation routine in
		cpu_dyntrans.c.
20070208	Increasing (experimentally) the nr of dyntrans instructions per
		loop from 60 to 120.
20070210	Commenting out (experimentally) the dyntrans_device_danger
		detection in memory_rw.c.
		Changing the testmips and baremips machines to use a revision 2
		MIPS64 CPU by default, instead of revision 1.
		Removing the dummy i960, IA64, x86, AVR32, and HP PA-RISC
		files, the PC bios emulation, and the Olivetti M700 (ARC) and
		db64360 emulation modes.
20070211	Adding an "mp" demo to the demos directory, which tests the
		SMP functionality of the testmips machine.
		Fixing PReP interrupts some more. NetBSD/prep now boots again.
20070216	Adding a "nop workaround" for booting Mach/PMAX to the
		documentation; thanks to Artur Bujdoso for the values.
		Converting more of the MacPPC interrupt stuff to the new
		system.
		Beginning to convert BeBox interrupts to the new system.
		PPC603e should NOT have the PPC_NO_DEC flag! Removing it.
		Correcting BeBox clock speed (it was set to 100 in the NetBSD
		bootinfo block, but should be 33000000/4), allowing NetBSD
		to start without using the (incorrect) PPC_NO_DEC hack.
20070217	Implementing (slow) AltiVec vector loads and stores, allowing
		NetBSD/macppc to finally boot using the GENERIC kernel :-)
		Updating the documentation with install instructions for
		NetBSD/macppc.
20070218-19	Regression testing for the release.

==============  RELEASE 0.4.4  ==============
1 dpavlin 22 /*
2 dpavlin 34 * Copyright (C) 2005-2007 Anders Gavare. All rights reserved.
3 dpavlin 22 *
4     * Redistribution and use in source and binary forms, with or without
5     * modification, are permitted provided that the following conditions are met:
6     *
7     * 1. Redistributions of source code must retain the above copyright
8     * notice, this list of conditions and the following disclaimer.
9     * 2. Redistributions in binary form must reproduce the above copyright
10     * notice, this list of conditions and the following disclaimer in the
11     * documentation and/or other materials provided with the distribution.
12     * 3. The name of the author may not be used to endorse or promote products
13     * derived from this software without specific prior written permission.
14     *
15     * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
16     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
17     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
18     * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
19     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
20     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
21     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
22     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
23     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
24     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
25     * SUCH DAMAGE.
26     *
27     *
28 dpavlin 34 * $Id: dev_adb.c,v 1.12 2007/01/28 11:29:52 debug Exp $
29 dpavlin 22 *
30     * ADB (Apple Desktop Bus) controller.
31     *
32     * Based on intuition from reverse-engineering NetBSD/macppc source code,
33     * so it probably only works with that OS.
34     *
35     * The comment "OK" means that 100% of the functionality used by NetBSD/macppc
36     * is covered.
37     *
38     * TODO:
39     * o) Clean up, don't hardcode values.
40     * o) Convert into a separate controller, bus, device architecture.
41     */
42    
43     #include <stdio.h>
44     #include <stdlib.h>
45     #include <string.h>
46     #include <sys/time.h>
47    
48     #include "console.h"
49     #include "cpu.h"
50     #include "device.h"
51 dpavlin 34 #include "interrupt.h"
52 dpavlin 22 #include "machine.h"
53     #include "memory.h"
54     #include "misc.h"
55    
56     #include "adb_viareg.h"
57    
58    
59     #define debug fatal
60     /* #define ADB_DEBUG */
61    
62    
63     #define TICK_SHIFT 17
64     #define DEV_ADB_LENGTH 0x2000
65    
66     #define N_VIA_REGS 0x10
67     #define VIA_REG_SHIFT 9
68    
69     #define MAX_BUF 100
70    
71    
72     static char *via_regname[N_VIA_REGS] = {
73     "vBufB", "vBufA", "vDirB", "vDirA",
74     "vT1C", "vT1CH", "vT1L", "vT1LH",
75     "vT2C", "vT2CH", "vSR", "vACR",
76     "vPCR", "vIFR", "vIER", "(unknown)" };
77    
78     struct adb_data {
79 dpavlin 34 struct interrupt irq;
80 dpavlin 22 int int_asserted;
81    
82     int kbd_dev;
83    
84     long long transfer_nr;
85    
86     uint8_t reg[N_VIA_REGS];
87    
88     int cur_output_offset;
89     uint8_t output_buf[MAX_BUF];
90    
91     int cur_input_offset;
92     int cur_input_length;
93     uint8_t input_buf[MAX_BUF];
94    
95     int dir;
96     int int_enable;
97     int ack; /* last ack state */
98     int tip; /* transfer in progress */
99     };
100    
101     #define DIR_INPUT 0
102     #define DIR_OUTPUT 1
103    
104     #define BUFB_nINTR 0x08
105     #define BUFB_ACK 0x10
106     #define BUFB_nTIP 0x20
107     #define IFR_SR 0x04
108     #define IFR_ANY 0x80
109     #define ACR_SR_OUT 0x10
110    
111    
112    
113 dpavlin 28 DEVICE_TICK(adb)
114 dpavlin 22 {
115     struct adb_data *d = extra;
116 dpavlin 34 int assert;
117 dpavlin 22
118 dpavlin 34 assert = d->reg[vIFR >> VIA_REG_SHIFT] & IFR_ANY;
119     if (assert == IFR_ANY && d->int_enable)
120     assert = 1;
121 dpavlin 22
122 dpavlin 34 if (assert)
123     INTERRUPT_ASSERT(d->irq);
124 dpavlin 22 else if (d->int_asserted)
125 dpavlin 34 INTERRUPT_DEASSERT(d->irq);
126 dpavlin 22
127 dpavlin 34 d->int_asserted = assert;
128 dpavlin 22 }
129    
130    
131     /*
132     * adb_reset():
133     *
134     * Reset registers to default values.
135     */
136     static void adb_reset(struct adb_data *d)
137     {
138     d->kbd_dev = 2;
139    
140     memset(d->reg, 0, sizeof(d->reg));
141     d->reg[vBufB >> VIA_REG_SHIFT] = BUFB_nINTR | BUFB_nTIP;
142    
143     d->cur_output_offset = 0;
144     memset(d->output_buf, 0, sizeof(d->output_buf));
145    
146     d->dir = 0;
147     d->int_enable = 0;
148     d->ack = 0;
149     d->tip = 0;
150     }
151    
152    
153     /*
154     * adb_process_cmd():
155     *
156     * This function should be called whenever a complete ADB command has been
157     * received.
158     */
159     static void adb_process_cmd(struct cpu *cpu, struct adb_data *d)
160     {
161     int i, reg, dev;
162    
163     debug("[ adb: COMMAND:");
164     for (i=0; i<d->cur_output_offset; i++)
165     debug(" %02x", d->output_buf[i]);
166     debug(" ]\n");
167    
168     if (d->cur_output_offset < 2) {
169     fatal("[ adb: WEIRD output length: %i ]\n",
170     d->cur_output_offset);
171     exit(1);
172     }
173    
174     switch (d->output_buf[0]) {
175    
176     case 0: /* ADB commands: */
177     if (d->output_buf[1] == 0x00) {
178     /* Reset. */
179     return;
180     }
181     if ((d->output_buf[1] & 0x0c) == 0x0c) {
182     /* ADBTALK: */
183     reg = d->output_buf[1] & 3;
184     dev = d->output_buf[1] >> 4;
185     fatal("dev=%i reg=%i\n", dev, reg);
186     /* Default values: nothing here */
187     d->input_buf[0] = 0x00;
188     d->input_buf[1] = 0x00;
189     d->input_buf[2] = d->output_buf[1];
190     d->cur_input_length = 3;
191     if (dev == d->kbd_dev) {
192     /* Keyboard. */
193     d->input_buf[0] = 0x01;
194     d->input_buf[1] = 0x01;
195     d->input_buf[2] = d->output_buf[1];
196     d->input_buf[3] = 0x01;
197     d->input_buf[4] = 0x01;
198     d->cur_input_length = 5;
199     }
200     } else if ((d->output_buf[1] & 0x0c) == 0x08) {
201     int new_dev_pos = d->output_buf[2] & 15;
202     /* ADBLISTEN: */
203     if ((d->output_buf[1] >> 4) != d->kbd_dev) {
204     fatal("[ adb: ADBLISTEN not to kbd ]\n");
205     exit(1);
206     }
207     if (d->output_buf[3] != 0xfe ||
208     (d->output_buf[2] & 0xf0) != 0x60) {
209     fatal("[ adb: unknown ADBLISTEN ]\n");
210     exit(1);
211     }
212     /* Move device. */
213     d->kbd_dev = new_dev_pos;
214     } else {
215     fatal("[ adb: unknown ADB command? ]\n");
216     exit(1);
217     }
218     break;
219    
220     case 1: /* PRAM/RTC: */
221     if (d->cur_output_offset == 3 &&
222     d->output_buf[1] == 0x01 &&
223     d->output_buf[2] == 0x01) {
224     /* Autopoll: */
225     d->input_buf[0] = 0x00;
226     d->input_buf[1] = 0x00;
227     d->input_buf[2] = d->output_buf[1];
228     d->cur_input_length = 3;
229     } else if (d->cur_output_offset == 2 &&
230     d->output_buf[1] == 0x03) {
231     /* Read RTC date/time: */
232     struct timeval tv;
233     gettimeofday(&tv, NULL);
234     d->input_buf[0] = tv.tv_sec >> 24;
235     d->input_buf[1] = tv.tv_sec >> 16;
236     d->input_buf[2] = tv.tv_sec >> 8;
237     d->input_buf[3] = tv.tv_sec;
238     d->cur_input_length = 4;
239     } else if (d->cur_output_offset == 2 &&
240     d->output_buf[1] == 0x11) {
241     /* Reboot. */
242     fatal("[ adb: reboot. TODO: make this nicer ]\n");
243     exit(1);
244     } else {
245     fatal("[ adb: UNIMPLEMENTED PRAM/RTC command ]\n");
246     exit(1);
247     }
248     break;
249    
250     default:fatal("[ adb: UNKNOWN command type 0x%02x ]\n",
251     d->output_buf[0]);
252     exit(1);
253     }
254    
255     d->reg[vBufB >> VIA_REG_SHIFT] &= ~BUFB_nINTR;
256     d->reg[vIFR >> VIA_REG_SHIFT] |= IFR_ANY | IFR_SR;
257     d->reg[vSR >> VIA_REG_SHIFT] = 0x00; /* Dummy. */
258     }
259    
260    
261     /*
262     * adb_transfer():
263     *
264     * This function should be called whenever a new transfer is started, a
265     * transfer is finished, or when the next byte in a transfer should be
266     * sent/received.
267     */
268     static void adb_transfer(struct cpu *cpu, struct adb_data *d, int state_change)
269     {
270     unsigned char c = 0x00;
271    
272     if (state_change) {
273     if (d->tip == 0) {
274     debug("[ adb: transfer #%lli done ]\n",
275     (long long)d->transfer_nr);
276     if (d->cur_output_offset > 0)
277     adb_process_cmd(cpu, d);
278     d->transfer_nr ++;
279     return;
280     }
281     debug("[ adb: starting transfer #%lli: %s ]\n", (long long)
282     d->transfer_nr, d->dir == DIR_INPUT? "INPUT" : "OUTPUT");
283     d->cur_input_offset = d->cur_output_offset = 0;
284     }
285    
286     debug("[ adb: transfer #%lli: ", (long long)d->transfer_nr);
287    
288     switch (d->dir) {
289    
290     case DIR_INPUT:
291     if (d->cur_input_offset >= d->cur_input_length)
292     fatal("[ adb: INPUT beyond end of data? ]\n");
293     else
294     c = d->input_buf[d->cur_input_offset ++];
295     debug("input 0x%02x", c);
296     d->reg[vSR >> VIA_REG_SHIFT] = c;
297     d->reg[vIFR >> VIA_REG_SHIFT] |= IFR_ANY | IFR_SR;
298     if (d->cur_input_offset >= d->cur_input_length)
299     d->reg[vBufB >> VIA_REG_SHIFT] |= BUFB_nINTR;
300     break;
301    
302     case DIR_OUTPUT:
303     c = d->reg[vSR >> VIA_REG_SHIFT];
304     debug("output 0x%02x", c);
305     d->reg[vIFR >> VIA_REG_SHIFT] |= IFR_ANY | IFR_SR;
306     d->reg[vBufB >> VIA_REG_SHIFT] |= BUFB_nINTR;
307     d->output_buf[d->cur_output_offset ++] = c;
308     break;
309     }
310    
311     debug(" ]\n");
312     }
313    
314    
315     DEVICE_ACCESS(adb)
316     {
317     uint64_t idata = 0, odata = 0;
318     struct adb_data *d = extra;
319     uint8_t old = 0;
320    
321     if (writeflag == MEM_WRITE)
322     idata = memory_readmax64(cpu, data, len);
323    
324     #ifdef ADB_DEBUG
325     if ((relative_addr & ((1 << VIA_REG_SHIFT) - 1)) != 0)
326     fatal("[ adb: %s non-via register? offset 0x%x ]\n",
327     writeflag == MEM_READ? "read from" : "write to",
328     (int)relative_addr);
329     else if (writeflag == MEM_READ)
330     fatal("[ adb: read from %s: 0x%02x ]\n",
331     via_regname[relative_addr >> VIA_REG_SHIFT],
332     (int)d->reg[relative_addr >> VIA_REG_SHIFT]);
333     else
334     fatal("[ adb: write to %s: 0x%02x ]\n", via_regname[
335     relative_addr >> VIA_REG_SHIFT], (int)idata);
336     #endif
337    
338     if (writeflag == MEM_READ)
339     odata = d->reg[relative_addr >> VIA_REG_SHIFT];
340     else {
341     old = d->reg[relative_addr >> VIA_REG_SHIFT];
342     switch (relative_addr) {
343     case vIFR:
344     /*
345     * vIFR is write-ones-to-clear, and the highest bit
346     * (IFR_ANY) is set if any of the lower bits are set.
347     */
348     d->reg[relative_addr >> VIA_REG_SHIFT] &= ~(idata|0x80);
349     if (d->reg[relative_addr >> VIA_REG_SHIFT] & 0x7f)
350     d->reg[relative_addr >> VIA_REG_SHIFT] |= 0x80;
351     break;
352     default:
353     d->reg[relative_addr >> VIA_REG_SHIFT] = idata;
354     }
355     }
356    
357     switch (relative_addr) {
358    
359     case vBufB:
360     /* OK */
361     if (writeflag == MEM_WRITE) {
362     int old_tip = d->tip;
363     int old_ack = d->ack;
364     if (idata & BUFB_nINTR)
365     idata &= ~BUFB_nINTR;
366     d->ack = 0;
367     if (idata & BUFB_ACK) {
368     idata &= ~BUFB_ACK;
369     d->ack = 1;
370     }
371     d->tip = 1;
372     if (idata & BUFB_nTIP) {
373     idata &= ~BUFB_nTIP;
374     d->tip = 0;
375     }
376     if (idata != 0)
377     fatal("[ adb: WARNING! UNIMPLEMENTED bits in"
378     " vBufB: 0x%02x ]\n", (int)idata);
379     if (old_tip != d->tip)
380     adb_transfer(cpu, d, 1);
381     else if (old_ack != d->ack)
382     adb_transfer(cpu, d, 0);
383     }
384     break;
385    
386     case vDirB:
387     break;
388    
389     case vSR:
390     /* Clear the SR interrupt flag, if set: */
391     d->reg[vIFR >> VIA_REG_SHIFT] &= ~IFR_SR;
392     break;
393    
394     case vACR:
395     /* OK */
396     if (writeflag == MEM_WRITE) {
397     if (idata & ACR_SR_OUT)
398     d->dir = DIR_OUTPUT;
399     else
400     d->dir = DIR_INPUT;
401     }
402     break;
403    
404     case vIFR:
405     /* OK */
406     break;
407    
408     case vIER:
409     /* OK */
410     if (writeflag == MEM_WRITE) {
411     d->int_enable = idata & 0x80? 1 : 0;
412     if (idata != 0x04 && idata != 0x84)
413     fatal("[ adb: WARNING! vIER value 0x%x is"
414     " UNKNOWN ]\n", (int)idata);
415     }
416     break;
417    
418     default:if ((relative_addr & ((1 << VIA_REG_SHIFT) - 1)) != 0)
419     fatal("[ adb: %s non-via register? offset 0x%x ]\n",
420     writeflag == MEM_READ? "read from" : "write to",
421     (int)relative_addr);
422     else if (writeflag == MEM_READ)
423     fatal("[ adb: READ from UNIMPLEMENTED %s ]\n",
424     via_regname[relative_addr >> VIA_REG_SHIFT]);
425     else
426     fatal("[ adb: WRITE to UNIMPLEMENTED %s: 0x%x ]\n",
427     via_regname[relative_addr >> VIA_REG_SHIFT],
428     (int)idata);
429     exit(1);
430     }
431    
432     if (writeflag == MEM_READ)
433     memory_writemax64(cpu, data, len, odata);
434    
435     return 1;
436     }
437    
438    
439     DEVINIT(adb)
440     {
441     struct adb_data *d = malloc(sizeof(struct adb_data));
442    
443     if (d == NULL) {
444     fprintf(stderr, "out of memory\n");
445     exit(1);
446     }
447     memset(d, 0, sizeof(struct adb_data));
448    
449 dpavlin 34 INTERRUPT_CONNECT(devinit->interrupt_path, d->irq);
450    
451 dpavlin 22 adb_reset(d);
452    
453     memory_device_register(devinit->machine->memory, devinit->name,
454     devinit->addr, DEV_ADB_LENGTH, dev_adb_access, d, DM_DEFAULT, NULL);
455 dpavlin 24 machine_add_tickfunction(devinit->machine, dev_adb_tick, d,
456     TICK_SHIFT, 0.0);
457 dpavlin 22
458     return 1;
459     }
460    
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