summaryrefslogtreecommitdiffstatshomepage
path: root/src/mame/drivers/gammagic.c
blob: 7ddc19cabe8f736282136f89db52b65fd09e6641 (plain) (blame)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
/************************************************************************************

Game Magic (c) 1997 Bally Gaming Co.

Preliminary driver by Grull Osgo

Game Magic

Is a Multigame machine build on a Bally's V8000 platform.

This is the first PC based gaming machine developed by Bally Gaming.

V8000 platform includes:

1 Motherboard MICRONICS M55Hi-Plus PCI/ISA, Chipset INTEL i430HX (TRITON II), 64 MB Ram (4 SIMM M x 16 MB SIMM)
On board Sound Blaster Vibra 16C chipset.
1 TOSHIBA CD-ROM or DVD-ROM Drive w/Bootable CD-ROM with Game.
1 OAK SVGA PCI Video Board.
1 Voodoo Graphics PCI Video Board, connected to the monitor.
1 21" SVGA Color Monitor, 16x9 Aspect, Vertical mount, with touchscreen.
1 Bally's IO-Board, Based on 68000 procesor as interface to all gaming devices
(Buttons, Lamps, Switches, Coin acceptor, Bill Validator, Hopper, Touchscreen, etc...)

PC and IO-Board communicates via RS-232 Serial Port.

Additional CD-ROM games: "99 Bottles of Beer"

*************************************************************************************/

#include "emu.h"
#include "cpu/i386/i386.h"
#include "machine/cr589.h"
#include "machine/8237dma.h"
#include "machine/pic8259.h"
//#include "machine/i82371sb.h"
//#include "machine/i82439tx.h"
#include "machine/pit8253.h"
#include "machine/mc146818.h"
#include "machine/pci.h"
#include "machine/8042kbdc.h"
#include "machine/pckeybrd.h"
#include "video/pc_vga.h"

#define ATAPI_CYCLES_PER_SECTOR (5000)  // plenty of time to allow DMA setup etc.  BIOS requires this be at least 2000, individual games may vary.

#define ATAPI_ERRFEAT_ABRT 0x04

#define ATAPI_STAT_BSY     0x80
#define ATAPI_STAT_DRDY    0x40
#define ATAPI_STAT_DMARDDF 0x20
#define ATAPI_STAT_SERVDSC 0x10
#define ATAPI_STAT_DRQ     0x08
#define ATAPI_STAT_CORR    0x04
#define ATAPI_STAT_CHECK   0x01

#define ATAPI_INTREASON_COMMAND 0x01
#define ATAPI_INTREASON_IO      0x02
#define ATAPI_INTREASON_RELEASE 0x04

#define ATAPI_REG_DATA      0
#define ATAPI_REG_ERRFEAT   1
#define ATAPI_REG_INTREASON 2
#define ATAPI_REG_SAMTAG    3
#define ATAPI_REG_COUNTLOW  4
#define ATAPI_REG_COUNTHIGH 5
#define ATAPI_REG_DRIVESEL  6
#define ATAPI_REG_CMDSTATUS 7
#define ATAPI_REG_MAX 16

#define ATAPI_DATA_SIZE ( 64 * 1024 )

#define MAX_TRANSFER_SIZE ( 63488 )

class gammagic_state : public driver_device
{
public:
	gammagic_state(const machine_config &mconfig, device_type type, const char *tag)
		: driver_device(mconfig, type, tag),
		m_pit8254(*this, "pit8254" ),
		m_pic8259_1(*this, "pic8259_1" ),
		m_pic8259_2(*this,  "pic8259_2" ),
		m_dma8237_1(*this, "dma8237_1" ),
		m_dma8237_2(*this, "dma8237_2" ),		
		m_maincpu(*this, "maincpu") { }

	int m_dma_channel;
	UINT8 m_dma_offset[2][4];
	UINT8 m_at_pages[0x10];

	required_device<device_t> m_pit8254;
	required_device<device_t> m_pic8259_1;
	required_device<device_t> m_pic8259_2;
	required_device<i8237_device> m_dma8237_1;
	required_device<i8237_device> m_dma8237_2;

	emu_timer *m_atapi_timer;
	//SCSIInstance *m_inserted_cdrom;

	int m_atapi_data_ptr;
	int m_atapi_data_len;
	int m_atapi_xferlen;
	int m_atapi_xferbase;
	int m_atapi_cdata_wait;
	int m_atapi_xfermod;
	/* memory */
	UINT8 m_atapi_regs[ATAPI_REG_MAX];
	UINT8 m_atapi_data[ATAPI_DATA_SIZE];

	DECLARE_DRIVER_INIT(gammagic);
	IRQ_CALLBACK_MEMBER(irq_callback);
	DECLARE_READ8_MEMBER(get_out2);
	DECLARE_READ8_MEMBER(at_page8_r);
	DECLARE_WRITE8_MEMBER(at_page8_w);
	DECLARE_READ8_MEMBER(pc_dma_read_byte);
	DECLARE_WRITE8_MEMBER(pc_dma_write_byte);
	DECLARE_READ8_MEMBER(at_dma8237_2_r);
	DECLARE_WRITE8_MEMBER(at_dma8237_2_w);
	DECLARE_WRITE_LINE_MEMBER(pc_dma_hrq_changed);
	void set_dma_channel(int channel, int state);
	DECLARE_WRITE_LINE_MEMBER(pc_dack0_w);
	DECLARE_WRITE_LINE_MEMBER(pc_dack1_w);
	DECLARE_WRITE_LINE_MEMBER(pc_dack2_w);
	DECLARE_WRITE_LINE_MEMBER(pc_dack3_w);	
	DECLARE_WRITE_LINE_MEMBER(gammagic_pic8259_1_set_int_line);
	DECLARE_READ8_MEMBER(get_slave_ack);
	
	virtual void machine_start();
	virtual void machine_reset();
	void atapi_init();
	required_device<cpu_device> m_maincpu;
};

READ8_MEMBER(gammagic_state::at_dma8237_2_r)
{
	return m_dma8237_2->i8237_r(space, offset / 2);
}

WRITE8_MEMBER(gammagic_state::at_dma8237_2_w)
{
	m_dma8237_2->i8237_w(space, offset / 2, data);
}

READ8_MEMBER(gammagic_state::at_page8_r)
{
	UINT8 data = m_at_pages[offset % 0x10];

	switch(offset % 8) {
	case 1:
		data = m_dma_offset[(offset / 8) & 1][2];
		break;
	case 2:
		data = m_dma_offset[(offset / 8) & 1][3];
		break;
	case 3:
		data = m_dma_offset[(offset / 8) & 1][1];
		break;
	case 7:
		data = m_dma_offset[(offset / 8) & 1][0];
		break;
	}
	return data;
}


WRITE8_MEMBER(gammagic_state::at_page8_w)
{
	m_at_pages[offset % 0x10] = data;

	switch(offset % 8) {
	case 1:
		m_dma_offset[(offset / 8) & 1][2] = data;
		break;
	case 2:
		m_dma_offset[(offset / 8) & 1][3] = data;
		break;
	case 3:
		m_dma_offset[(offset / 8) & 1][1] = data;
		break;
	case 7:
		m_dma_offset[(offset / 8) & 1][0] = data;
		break;
	}
}


WRITE_LINE_MEMBER(gammagic_state::pc_dma_hrq_changed)
{
	m_maincpu->set_input_line(INPUT_LINE_HALT, state ? ASSERT_LINE : CLEAR_LINE);

	/* Assert HLDA */
	m_dma8237_1->i8237_hlda_w(state);
}


READ8_MEMBER(gammagic_state::pc_dma_read_byte)
{
	offs_t page_offset = (((offs_t) m_dma_offset[0][m_dma_channel]) << 16)
		& 0xFF0000;

	return space.read_byte(page_offset + offset);
}


WRITE8_MEMBER(gammagic_state::pc_dma_write_byte)
{
	offs_t page_offset = (((offs_t) m_dma_offset[0][m_dma_channel]) << 16)
		& 0xFF0000;

	space.write_byte(page_offset + offset, data);
}

void gammagic_state::set_dma_channel(int channel, int state)
{
	if (!state) m_dma_channel = channel;
}

WRITE_LINE_MEMBER(gammagic_state::pc_dack0_w){ set_dma_channel(0, state); }
WRITE_LINE_MEMBER(gammagic_state::pc_dack1_w){ set_dma_channel(1, state); }
WRITE_LINE_MEMBER(gammagic_state::pc_dack2_w){ set_dma_channel(2, state); }
WRITE_LINE_MEMBER(gammagic_state::pc_dack3_w){ set_dma_channel(3, state); }

static I8237_INTERFACE( dma8237_1_config )
{
	DEVCB_DRIVER_LINE_MEMBER(gammagic_state,pc_dma_hrq_changed),
	DEVCB_NULL,
	DEVCB_DRIVER_MEMBER(gammagic_state, pc_dma_read_byte),
	DEVCB_DRIVER_MEMBER(gammagic_state, pc_dma_write_byte),
	{ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL },
	{ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL },
	{ DEVCB_DRIVER_LINE_MEMBER(gammagic_state,pc_dack0_w), DEVCB_DRIVER_LINE_MEMBER(gammagic_state,pc_dack1_w), DEVCB_DRIVER_LINE_MEMBER(gammagic_state,pc_dack2_w), DEVCB_DRIVER_LINE_MEMBER(gammagic_state,pc_dack3_w) }
};

static I8237_INTERFACE( dma8237_2_config )
{
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,
	DEVCB_NULL,
	{ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL },
	{ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL },
	{ DEVCB_NULL, DEVCB_NULL, DEVCB_NULL, DEVCB_NULL }
};
/*
READ32_MEMBER( gammagic_state::atapi_r )
{
    UINT8 *atapi_regs = m_atapi_regs;
    //running_machine &machine = space.machine();
    int reg, data;

    if (mem_mask == 0x0000ffff) // word-wide command read
    {
      logerror("ATAPI: packet read = %04x\n", m_atapi_data[m_atapi_data_ptr]);

        // assert IRQ and drop DRQ
        if (m_atapi_data_ptr == 0 && m_atapi_data_len == 0)
        {
            // get the data from the device
            if( m_atapi_xferlen > 0 )
            {
                SCSIReadData( m_inserted_cdrom, m_atapi_data, m_atapi_xferlen );
                m_atapi_data_len = m_atapi_xferlen;
            }

            if (m_atapi_xfermod > MAX_TRANSFER_SIZE)
            {
                m_atapi_xferlen = MAX_TRANSFER_SIZE;
                m_atapi_xfermod = m_atapi_xfermod - MAX_TRANSFER_SIZE;
            }
            else
            {
                m_atapi_xferlen = m_atapi_xfermod;
                m_atapi_xfermod = 0;
            }

            //verboselog\\( machine, 2, "atapi_r: atapi_xferlen=%d\n", m_atapi_xferlen );
            if( m_atapi_xferlen != 0 )
            {
                atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRQ | ATAPI_STAT_SERVDSC;
                atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_IO;
            }
            else
            {
                logerror("ATAPI: dropping DRQ\n");
                atapi_regs[ATAPI_REG_CMDSTATUS] = 0;
                atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_IO;
            }

            atapi_regs[ATAPI_REG_COUNTLOW] = m_atapi_xferlen & 0xff;
            atapi_regs[ATAPI_REG_COUNTHIGH] = (m_atapi_xferlen>>8)&0xff;

            atapi_irq(space.machine(), ASSERT_LINE);
        }

        if( m_atapi_data_ptr < m_atapi_data_len )
        {
            data = m_atapi_data[m_atapi_data_ptr++];
            data |= ( m_atapi_data[m_atapi_data_ptr++] << 8 );
            if( m_atapi_data_ptr >= m_atapi_data_len )
            {

                m_atapi_data_ptr = 0;
                m_atapi_data_len = 0;

                if( m_atapi_xferlen == 0 )
                {
                    atapi_regs[ATAPI_REG_CMDSTATUS] = 0;
                    atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_IO;
                    atapi_irq(space.machine(), ASSERT_LINE);
                }
            }
        }
        else
        {
            data = 0;
        }
    }
    else
    {
        atapi_irq(space.machine(), CLEAR_LINE);
        int shift;
        shift = 0;
        reg = offset<<2;
        switch(mem_mask)
        {
        case 0x000000ff:
            break;
        case 0x0000ff00:
            reg+=1;
            data >>= 8;
            shift=8;
            break;
        case 0x00ff0000:
            reg+=2;
            data >>=16;
            shift=16;
            break;
        case 0xff000000:
            reg+=3;
            data >>=24;
            shift=24;
            break;
        }
        data = atapi_regs[reg];
            data <<= shift;
    }
    return data;
}

WRITE32_MEMBER( gammagic_state::atapi_w )
{
    UINT8 *atapi_regs = m_atapi_regs;
    UINT8 *atapi_data = m_atapi_data;
    int reg;
    if (mem_mask == 0x0000ffff) // word-wide command write
    {
        atapi_data[m_atapi_data_ptr++] = data & 0xff;
        atapi_data[m_atapi_data_ptr++] = data >> 8;

        if (m_atapi_cdata_wait)
        {
            logerror("ATAPI: waiting, ptr %d wait %d\n", m_atapi_data_ptr, m_atapi_cdata_wait);
            if (m_atapi_data_ptr == m_atapi_cdata_wait)
            {
                // send it to the device
                SCSIWriteData( m_inserted_cdrom, atapi_data, m_atapi_cdata_wait );

                // assert IRQ
                atapi_irq(space.machine(), ASSERT_LINE);

                // not sure here, but clear DRQ at least?
                atapi_regs[ATAPI_REG_CMDSTATUS] = 0;
            }
        }

        else if ( m_atapi_data_ptr == 12 )
        {
            int phase;
            // reset data pointer for reading SCSI results
            m_atapi_data_ptr = 0;
            m_atapi_data_len = 0;

            // send it to the SCSI device
            SCSISetCommand( m_inserted_cdrom, m_atapi_data, 12 );
            SCSIExecCommand( m_inserted_cdrom, &m_atapi_xferlen );
            SCSIGetPhase( m_inserted_cdrom, &phase );

            if (m_atapi_xferlen != -1)
            {
                        logerror("ATAPI: SCSI command %02x returned %d bytes from the device\n", atapi_data[0]&0xff, m_atapi_xferlen);

                // store the returned command length in the ATAPI regs, splitting into
                // multiple transfers if necessary
                m_atapi_xfermod = 0;
                if (m_atapi_xferlen > MAX_TRANSFER_SIZE)
                {
                    m_atapi_xfermod = m_atapi_xferlen - MAX_TRANSFER_SIZE;
                    m_atapi_xferlen = MAX_TRANSFER_SIZE;
                }

                atapi_regs[ATAPI_REG_COUNTLOW] = m_atapi_xferlen & 0xff;
                atapi_regs[ATAPI_REG_COUNTHIGH] = (m_atapi_xferlen>>8)&0xff;

                if (m_atapi_xferlen == 0)
                {
                    // if no data to return, set the registers properly
                    atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRDY;
                    atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_IO|ATAPI_INTREASON_COMMAND;
                }
                else
                {
                    // indicate data ready: set DRQ and DMA ready, and IO in INTREASON
                    atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRQ | ATAPI_STAT_SERVDSC;
                    atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_IO;
                }

                switch( phase )
                {
                case SCSI_PHASE_DATAOUT:
                    m_atapi_cdata_wait = m_atapi_xferlen;
                    break;
                }

                // perform special ATAPI processing of certain commands
                switch (atapi_data[0]&0xff)
                {
                    case 0x00: // BUS RESET / TEST UNIT READY
                    case 0xbb: // SET CDROM SPEED
                        atapi_regs[ATAPI_REG_CMDSTATUS] = 0;
                        break;

                    case 0x45: // PLAY
                        atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_BSY;
                        m_atapi_timer->adjust( downcast<cpu_device *>(&space->device())->cycles_to_attotime( ATAPI_CYCLES_PER_SECTOR ) );
                        break;
                }

                // assert IRQ
                atapi_irq(space.machine(), ASSERT_LINE);
            }
            else
            {
                        logerror("ATAPI: SCSI device returned error!\n");

                atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRQ | ATAPI_STAT_CHECK;
                atapi_regs[ATAPI_REG_ERRFEAT] = 0x50;   // sense key = ILLEGAL REQUEST
                atapi_regs[ATAPI_REG_COUNTLOW] = 0;
                atapi_regs[ATAPI_REG_COUNTHIGH] = 0;
            }
        }
    }
    else
    {
        reg = offset<<2;
        switch(mem_mask)
        {
        case 0x000000ff:
            break;
        case 0x0000ff00:
            reg+=1;
            data >>= 8;
            break;
        case 0x00ff0000:
            reg+=2;
            data >>=16;
            break;
        case 0xff000000:
            reg+=3;
            data >>=24;
            break;
        }

        atapi_regs[reg] = data;
            logerror("ATAPI: reg %d = %x (offset %x mask %x PC=%x)\n", reg, data, offset, mem_mask, cpu_get_pc(&space->device()));

        if (reg == ATAPI_REG_CMDSTATUS)
        {
                logerror("ATAPI command %x issued! (PC=%x)\n", data, cpu_get_pc(&space->device()));
            switch (data)
            {
                case 0xa0:  // PACKET
                    atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRQ;
                    atapi_regs[ATAPI_REG_INTREASON] = ATAPI_INTREASON_COMMAND;

                    m_atapi_data_ptr = 0;
                    m_atapi_data_len = 0;

                    // we have no data
                    m_atapi_xferlen = 0;
                    m_atapi_xfermod = 0;

                    m_atapi_cdata_wait = 0;
                    break;

                case 0xa1:  // IDENTIFY PACKET DEVICE
                    atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_DRQ;

                    m_atapi_data_ptr = 0;
                    m_atapi_data_len = 512;

                    // we have no data
                    m_atapi_xferlen = 0;
                    m_atapi_xfermod = 0;

                    memset( atapi_data, 0, m_atapi_data_len );

                    atapi_data[ 0 ^ 1 ] = 0x85; // ATAPI device, cmd set 5 compliant, DRQ within 3 ms of PACKET command
                    atapi_data[ 1 ^ 1 ] = 0x80; // ATAPI device, removable media

                    memset( &atapi_data[ 46 ], ' ', 8 );
                    atapi_data[ 46 ^ 1 ] = '1';
                    atapi_data[ 47 ^ 1 ] = '.';
                    atapi_data[ 48 ^ 1 ] = '0';


                    memset( &atapi_data[ 54 ], ' ', 40 );
                    atapi_data[ 54 ^ 1 ] = 'T';
                    atapi_data[ 55 ^ 1 ] = 'O';
                    atapi_data[ 56 ^ 1 ] = 'S';
                    atapi_data[ 57 ^ 1 ] = 'H';
                    atapi_data[ 58 ^ 1 ] = 'I';
                    atapi_data[ 59 ^ 1 ] = 'B';
                    atapi_data[ 60 ^ 1 ] = 'A';
                    atapi_data[ 61 ^ 1 ] = ' ';
                    atapi_data[ 62 ^ 1 ] = 'X';
                    atapi_data[ 63 ^ 1 ] = 'M';
                    atapi_data[ 64 ^ 1 ] = '-';
                    atapi_data[ 65 ^ 1 ] = '3';
                    atapi_data[ 66 ^ 1 ] = '3';
                    atapi_data[ 67 ^ 1 ] = '0';
                    atapi_data[ 68 ^ 1 ] = '1';
                    atapi_data[ 69 ^ 1 ] = ' ';

                    atapi_data[ 98 ^ 1 ] = 0x06; // Word 49=Capabilities, IORDY may be disabled (bit_10), LBA Supported mandatory (bit_9)
                    atapi_data[ 99 ^ 1 ] = 0x00;

                    atapi_regs[ATAPI_REG_COUNTLOW] = 0;
                    atapi_regs[ATAPI_REG_COUNTHIGH] = 2;

                    atapi_irq(space.machine(), ASSERT_LINE);
                    break;
                case 0xec:  //IDENTIFY DEVICE - Must abort here and set for packet data
                    atapi_regs[ATAPI_REG_ERRFEAT] = ATAPI_ERRFEAT_ABRT;
                    atapi_regs[ATAPI_REG_CMDSTATUS] = ATAPI_STAT_CHECK;

                    atapi_irq(space.machine(), ASSERT_LINE);

                case 0xef:  // SET FEATURES
                    atapi_regs[ATAPI_REG_CMDSTATUS] = 0;

                    m_atapi_data_ptr = 0;
                    m_atapi_data_len = 0;

                    atapi_irq(space.machine(), ASSERT_LINE);
                    break;

                default:
                    logerror("ATAPI: Unknown IDE command %x\n", data);
                    break;
            }
        }
    }
}
*/
// Memory is mostly handled by the chipset
static ADDRESS_MAP_START( gammagic_map, AS_PROGRAM, 32, gammagic_state )
	AM_RANGE(0x00000000, 0x0009ffff) AM_RAM
	AM_RANGE(0x000a0000, 0x000bffff) AM_DEVREADWRITE8("vga", vga_device, mem_r, mem_w, 0xffffffff)
	AM_RANGE(0x00100000, 0x07ffffff) AM_RAM
	AM_RANGE(0x08000000, 0xfffdffff) AM_NOP
	AM_RANGE(0xfffe0000, 0xffffffff) AM_ROM AM_REGION("user", 0x20000)/* System BIOS */
ADDRESS_MAP_END

static ADDRESS_MAP_START( gammagic_io, AS_IO, 32, gammagic_state)
	AM_RANGE(0x0000, 0x001f) AM_DEVREADWRITE8("dma8237_1", i8237_device, i8237_r, i8237_w, 0xffffffff)
	AM_RANGE(0x0020, 0x003f) AM_DEVREADWRITE8_LEGACY("pic8259_1", pic8259_r, pic8259_w, 0xffffffff)
	AM_RANGE(0x0040, 0x005f) AM_DEVREADWRITE8_LEGACY("pit8254", pit8253_r, pit8253_w, 0xffffffff)
	AM_RANGE(0x0060, 0x006f) AM_DEVREADWRITE8("kbdc", kbdc8042_device, data_r, data_w, 0xffffffff)
	AM_RANGE(0x0070, 0x007f) AM_DEVREADWRITE8("rtc", mc146818_device, read, write, 0xffffffff)
	AM_RANGE(0x0080, 0x009f) AM_READWRITE8(at_page8_r, at_page8_w, 0xffffffff)
	AM_RANGE(0x00a0, 0x00bf) AM_DEVREADWRITE8_LEGACY("pic8259_2", pic8259_r, pic8259_w, 0xffffffff)
	AM_RANGE(0x00c0, 0x00df) AM_READWRITE8(at_dma8237_2_r, at_dma8237_2_w, 0xffffffff)
	AM_RANGE(0x00e8, 0x00ef) AM_NOP
	AM_RANGE(0x00f0, 0x01ef) AM_NOP
	//AM_RANGE(0x01f0, 0x01f7) AM_READWRITE(atapi_r, atapi_w)
	AM_RANGE(0x01f8, 0x03ef) AM_NOP
	AM_RANGE(0x03b0, 0x03bf) AM_DEVREADWRITE8("vga", vga_device, port_03b0_r, port_03b0_w, 0xffffffff)
	AM_RANGE(0x03c0, 0x03cf) AM_DEVREADWRITE8("vga", vga_device, port_03c0_r, port_03c0_w, 0xffffffff)
	AM_RANGE(0x03d0, 0x03df) AM_DEVREADWRITE8("vga", vga_device, port_03d0_r, port_03d0_w, 0xffffffff)
	AM_RANGE(0x03f0, 0x0cf7) AM_NOP
	AM_RANGE(0x0cf8, 0x0cff) AM_DEVREADWRITE("pcibus", pci_bus_device, read, write)
	AM_RANGE(0x0400, 0xffff) AM_NOP


ADDRESS_MAP_END

#define AT_KEYB_HELPER(bit, text, key1) \
	PORT_BIT( bit, IP_ACTIVE_HIGH, IPT_KEYPAD) PORT_NAME(text) PORT_CODE(key1)

#if 1
static INPUT_PORTS_START( gammagic )
	PORT_START("pc_keyboard_0")
	PORT_BIT ( 0x0001, 0x0000, IPT_UNUSED )     /* unused scancode 0 */
	AT_KEYB_HELPER( 0x0002, "Esc",          KEYCODE_Q           ) /* Esc                         01  81 */

	PORT_START("pc_keyboard_1")
	AT_KEYB_HELPER( 0x0010, "T",            KEYCODE_T           ) /* T                           14  94 */
	AT_KEYB_HELPER( 0x0020, "Y",            KEYCODE_Y           ) /* Y                           15  95 */
	AT_KEYB_HELPER( 0x0100, "O",            KEYCODE_O           ) /* O                           18  98 */
	AT_KEYB_HELPER( 0x1000, "Enter",        KEYCODE_ENTER       ) /* Enter                       1C  9C */

	PORT_START("pc_keyboard_2")

	PORT_START("pc_keyboard_3")
	AT_KEYB_HELPER( 0x0001, "B",            KEYCODE_B           ) /* B                           30  B0 */
	AT_KEYB_HELPER( 0x0002, "N",            KEYCODE_N           ) /* N                           31  B1 */
	AT_KEYB_HELPER( 0x0800, "F1",           KEYCODE_S           ) /* F1                          3B  BB */
	AT_KEYB_HELPER( 0x1000, "F2",           KEYCODE_D           ) /* F2                          3C  BC */
	AT_KEYB_HELPER( 0x4000, "F4",           KEYCODE_F           ) /* F4                          3E  BE */


	PORT_START("pc_keyboard_4")
	AT_KEYB_HELPER( 0x0004, "F8",           KEYCODE_F8          ) // f8=42  /f10=44 /minus 4a /plus=4e
	AT_KEYB_HELPER( 0x0010, "F10",          KEYCODE_F10         ) // f8=42  /f10=44 /minus 4a /plus=4e
	AT_KEYB_HELPER( 0x0100, "KP 8(UP)",     KEYCODE_8_PAD       ) /* Keypad 8  (Up arrow)        48  C8 */
	AT_KEYB_HELPER( 0x0400, "KP -",         KEYCODE_MINUS_PAD   ) // f8=42  /f10=44 /minus 4a /plus=4e
	AT_KEYB_HELPER( 0x4000, "KP +",         KEYCODE_PLUS_PAD    ) // f8=42  /f10=44 /minus 4a /plus=4e

	PORT_START("pc_keyboard_5")
	AT_KEYB_HELPER( 0x0001, "KP 2(DN)",     KEYCODE_2_PAD       ) /* Keypad 2  (Down arrow)      50  D0 */

	PORT_START("pc_keyboard_6")
	AT_KEYB_HELPER( 0x0040, "(MF2)Cursor Up",       KEYCODE_UP          ) /* Up                          67  e7 */
	AT_KEYB_HELPER( 0x0080, "(MF2)Page Up",         KEYCODE_PGUP        ) /* Page Up                     68  e8 */
	AT_KEYB_HELPER( 0x0100, "(MF2)Cursor Left",     KEYCODE_LEFT        ) /* Left                        69  e9 */
	AT_KEYB_HELPER( 0x0200, "(MF2)Cursor Right",        KEYCODE_RIGHT       ) /* Right                       6a  ea */
	AT_KEYB_HELPER( 0x0800, "(MF2)Cursor Down",     KEYCODE_DOWN        ) /* Down                        6c  ec */
	AT_KEYB_HELPER( 0x1000, "(MF2)Page Down",       KEYCODE_PGDN        ) /* Page Down                   6d  ed */
	AT_KEYB_HELPER( 0x4000, "Del",                      KEYCODE_A           ) /* Delete                      6f  ef */

	PORT_START("pc_keyboard_7")

INPUT_PORTS_END
#endif

IRQ_CALLBACK_MEMBER(gammagic_state::irq_callback)
{
	return pic8259_acknowledge(m_pic8259_1);
}

void gammagic_state::machine_start()
{
	m_maincpu->set_irq_acknowledge_callback(device_irq_acknowledge_delegate(FUNC(gammagic_state::irq_callback),this));
}

void gammagic_state::machine_reset()
{
	//void *cd;
	//SCSIGetDevice( m_inserted_cdrom, &cd );

}


/*void gammagic_state::atapi_irq(int state)
{
    pic8259_ir6_w(m_pic8259_2, state);
}

void gammagic_state::atapi_exit(running_machine& machine)
{
    SCSIDeleteInstance(m_inserted_cdrom);

}
*/

void gammagic_state::atapi_init()
{
	m_atapi_regs[ATAPI_REG_CMDSTATUS] = 0;
	m_atapi_regs[ATAPI_REG_ERRFEAT] = 1;
	m_atapi_regs[ATAPI_REG_COUNTLOW] = 0x14;
	m_atapi_regs[ATAPI_REG_COUNTHIGH] = 0xeb;
	m_atapi_data_ptr = 0;
	m_atapi_data_len = 0;
	m_atapi_cdata_wait = 0;

	//SCSIAllocInstance( machine, &SCSIClassCr589, &m_inserted_cdrom, ":cdrom" );

	//machine().add_notifier(MACHINE_NOTIFY_EXIT, machine_notify_delegate(FUNC(atapi_exit), &machine));

}


/*************************************************************
 *
 * pic8259 configuration
 *
 *************************************************************/

WRITE_LINE_MEMBER(gammagic_state::gammagic_pic8259_1_set_int_line)
{
	m_maincpu->set_input_line(0, state ? HOLD_LINE : CLEAR_LINE);
}

READ8_MEMBER(gammagic_state::get_slave_ack)
{
	if (offset==2) {
		return pic8259_acknowledge(m_pic8259_2);
	}
	return 0x00;
}

static const struct pic8259_interface gammagic_pic8259_1_config =
{
	DEVCB_DRIVER_LINE_MEMBER(gammagic_state,gammagic_pic8259_1_set_int_line),
	DEVCB_LINE_VCC,
	DEVCB_DRIVER_MEMBER(gammagic_state,get_slave_ack)
};

static const struct pic8259_interface gammagic_pic8259_2_config =
{
	DEVCB_DEVICE_LINE("pic8259_1", pic8259_ir2_w),
	DEVCB_LINE_GND,
	DEVCB_NULL
};

/*************************************************************
 *
 * pit8254 configuration
 *
 *************************************************************/

static const struct pit8253_config gammagic_pit8254_config =
{
	{
		{
			4772720/4,              /* heartbeat IRQ */
			DEVCB_NULL,
			DEVCB_DEVICE_LINE("pic8259_1", pic8259_ir0_w)
		}, {
			4772720/4,              /* dram refresh */
			DEVCB_NULL,
			DEVCB_NULL
		}, {
			4772720/4,              /* pio port c pin 4, and speaker polling enough */
			DEVCB_NULL,
			DEVCB_NULL
		}
	}
};

READ8_MEMBER(gammagic_state::get_out2)
{
	return pit8253_get_output( m_pit8254, 2 );
}

static const struct kbdc8042_interface at8042 =
{
	KBDC8042_AT386,
	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_RESET),
	DEVCB_CPU_INPUT_LINE("maincpu", INPUT_LINE_A20),
	DEVCB_DEVICE_LINE_MEMBER("pic8259_1", pic8259_device, ir1_w),
	DEVCB_NULL,

	DEVCB_NULL,
	DEVCB_DRIVER_MEMBER(gammagic_state,get_out2)
};

static MACHINE_CONFIG_START( gammagic, gammagic_state )
	MCFG_CPU_ADD("maincpu", PENTIUM, 133000000) // Intel Pentium 133
	MCFG_CPU_PROGRAM_MAP(gammagic_map)
	MCFG_CPU_IO_MAP(gammagic_io)
	MCFG_PIT8254_ADD( "pit8254", gammagic_pit8254_config )
	MCFG_I8237_ADD( "dma8237_1", XTAL_14_31818MHz/3, dma8237_1_config )
	MCFG_I8237_ADD( "dma8237_2", XTAL_14_31818MHz/3, dma8237_2_config )
	MCFG_PIC8259_ADD( "pic8259_1", gammagic_pic8259_1_config )
	MCFG_PIC8259_ADD( "pic8259_2", gammagic_pic8259_2_config )
	MCFG_MC146818_ADD( "rtc", MC146818_STANDARD )
//  MCFG_I82371SB_ADD("i82371sb")
//  MCFG_I82439TX_ADD("i82439tx", "maincpu", "user")
	MCFG_PCI_BUS_ADD("pcibus", 0)
//  MCFG_PCI_BUS_DEVICE(0, "i82439tx", i82439tx_pci_read, i82439tx_pci_write)
//  MCFG_PCI_BUS_DEVICE(1, "i82371sb", i82371sb_pci_read, i82371sb_pci_write)
	/* video hardware */
	MCFG_FRAGMENT_ADD( pcvideo_vga )
	
	MCFG_KBDC8042_ADD("kbdc", at8042)

MACHINE_CONFIG_END


DRIVER_INIT_MEMBER(gammagic_state,gammagic)
{
	atapi_init();
}

ROM_START( gammagic )
	ROM_REGION32_LE(0x40000, "user", 0)
	//Original Memory Set
	//ROM_LOAD("m7s04.rom",   0, 0x40000, CRC(3689f5a9) SHA1(8daacdb0dc6783d2161680564ffe83ac2515f7ef))
	//ROM_LOAD("otivga_tx2953526.rom", 0x0000, 0x8000, CRC(916491af) SHA1(d64e3a43a035d70ace7a2d0603fc078f22d237e1))

	//Temp. Memory Set (Only for initial driver development stage)
	ROM_LOAD16_BYTE( "trident_tgui9680_bios.bin", 0x0000, 0x4000, CRC(1eebde64) SHA1(67896a854d43a575037613b3506aea6dae5d6a19) )
	ROM_CONTINUE(                                 0x0001, 0x4000 )
	ROM_LOAD("5hx29.bin",   0x20000, 0x20000, CRC(07719a55) SHA1(b63993fd5186cdb4f28c117428a507cd069e1f68))

	DISK_REGION( "cdrom" )
	DISK_IMAGE_READONLY( "gammagic", 0,SHA1(caa8fc885d84dbc07fb0604c76cd23c873a65ce6) )
ROM_END

ROM_START( 99bottles )
	ROM_REGION32_LE(0x40000, "user", 0)
	//Original BIOS/VGA-BIOS Rom Set
	//ROM_LOAD("m7s04.rom",   0, 0x40000, CRC(3689f5a9) SHA1(8daacdb0dc6783d2161680564ffe83ac2515f7ef))
	//ROM_LOAD("otivga_tx2953526.rom", 0x0000, 0x8000, CRC(916491af) SHA1(d64e3a43a035d70ace7a2d0603fc078f22d237e1))

	//Temporary (Chipset compatible Rom Set, only for driver development stage)
	ROM_LOAD16_BYTE( "trident_tgui9680_bios.bin", 0x0000, 0x4000, CRC(1eebde64) SHA1(67896a854d43a575037613b3506aea6dae5d6a19) )
	ROM_CONTINUE(                                 0x0001, 0x4000 )
	ROM_LOAD("5hx29.bin",   0x20000, 0x20000, CRC(07719a55) SHA1(b63993fd5186cdb4f28c117428a507cd069e1f68))

	DISK_REGION( "cdrom" )
	DISK_IMAGE_READONLY( "99bottles", 0, SHA1(0b874178c8dd3cfc451deb53dc7936dc4ad5a04f))
ROM_END


/***************************************************************************

  Game driver(s)

***************************************************************************/
/*************************
*      Game Drivers      *
*************************/

/*     YEAR NAME       PARENT    MACHINE   INPUT     INIT       ROT   COMPANY             FULLNAME              FLAGS           */
GAME( 1999,  gammagic, 0,        gammagic, gammagic, gammagic_state, gammagic , ROT0, "Bally Gaming Co.", "Game Magic",         GAME_IS_SKELETON )
GAME( 1999, 99bottles, gammagic, gammagic, gammagic, gammagic_state, gammagic , ROT0, "Bally Gaming Co.", "99 Bottles of Beer", GAME_IS_SKELETON )