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r8637 Monday 26th July, 2010 at 19:42:12 UTC by Wilbert Pol
[3DO] Some expansion bus updates.

[src/mess/machine]

3do.c

src/mess/machine/3do.c

r8636	r8637
46	46	this data comes from 00010100 stored by the loop at 1cba4 (read from 00010100, store to 00013917)
47	47	this data comes from 0300d4f8 stored to 00010100 (done by loop at 000000a8)
48	48
	49
	50	Expansion bus stuff:
	51	00022ba4 - init exp bus, write 17x 00 to the selection register to let all expansion devices determine their id on the bus.
	52	00022bd0 - write 0x8f to the selection register to determine if there are too many devices attached.
	53
49	54	*/
50	55
51	56	#include "emu.h"
r8636	r8637
165	170	/* DMA */
166	171	UINT32   dmareqdis;      /* 03400308 */
167	172	/* Expansion bus */
168		UINT32   setexpctl;      /* 03400400 */
169		UINT32   clrexpctl;      /* 03400404 */
	173	UINT32   expctl;         /* 03400400/03400404 */
170	174	UINT32   type0_4;      /* 03400408 */
171	175	UINT32   dipir1;         /* 03400410 */
172	176	UINT32   dipir2;         /* 03400414 */
173	177	/* Bus signals */
174		UINT32   sel[16];      /* 03400500 - 0340053f */
175		UINT32   poll[16];      /* 03400540 - 0340057f */
176		UINT32   cmdstat[16];   /* 03400580 - 034005bf */
177		UINT32   data[16];      /* 034005c0 - 034005ff */
	178	UINT32   sel;         /* 03400500 - 0340053f */
	179	UINT32   poll;         /* 03400540 - 0340057f */
	180	UINT32   cmdstat;      /* 03400580 - 034005bf */
	181	UINT32   data;         /* 034005c0 - 034005ff */
178	182	/* DSPP */
179	183	UINT32   semaphore;      /* 034017d0 */
180	184	UINT32   semaack;      /* 034017d4 */
r8636	r8637
736	740	case 0x0088/4:
737	741	return clio.adbctl;
738	742
	743	case 0x0100/4:
	744	return clio.timer0;
	745	case 0x0104/4:
	746	return clio.timerback0;
	747	case 0x0108/4:
	748	return clio.timer1;
	749	case 0x010c/4:
	750	return clio.timerback1;
	751	case 0x0110/4:
	752	return clio.timer2;
	753	case 0x0114/4:
	754	return clio.timerback2;
	755	case 0x0118/4:
	756	return clio.timer3;
	757	case 0x011c/4:
	758	return clio.timerback3;
	759	case 0x0120/4:
	760	return clio.timer4;
	761	case 0x0124/4:
	762	return clio.timerback4;
	763	case 0x0128/4:
	764	return clio.timer5;
	765	case 0x012c/4:
	766	return clio.timerback5;
	767	case 0x0130/4:
	768	return clio.timer6;
	769	case 0x0134/4:
	770	return clio.timerback6;
	771	case 0x0138/4:
	772	return clio.timer7;
	773	case 0x013c/4:
	774	return clio.timerback7;
	775	case 0x0140/4:
	776	return clio.timer8;
	777	case 0x0144/4:
	778	return clio.timerback8;
	779	case 0x0148/4:
	780	return clio.timer9;
	781	case 0x014c/4:
	782	return clio.timerback9;
	783	case 0x0150/4:
	784	return clio.timer10;
	785	case 0x0154/4:
	786	return clio.timerback10;
	787	case 0x0158/4:
	788	return clio.timer11;
	789	case 0x015c/4:
	790	return clio.timerback11;
	791	case 0x0160/4:
	792	return clio.timer12;
	793	case 0x0164/4:
	794	return clio.timerback12;
	795	case 0x0168/4:
	796	return clio.timer13;
	797	case 0x016c/4:
	798	return clio.timerback13;
	799	case 0x0170/4:
	800	return clio.timer14;
	801	case 0x0174/4:
	802	return clio.timerback14;
	803	case 0x0178/4:
	804	return clio.timer15;
	805	case 0x017c/4:
	806	return clio.timerback15;
	807
739	808	case 0x0200/4:
740	809	return clio.settm0;
741	810	case 0x0204/4:
r8636	r8637
749	818	return clio.slack;
750	819
751	820	case 0x0400/4:
752		return clio.setexpctl | 0x80;      /* bit 7 - ARM has bus control */
	821	case 0x0404/4:
	822	return clio.expctl;
753	823	case 0x0410/4:
754	824	return clio.dipir1;
755	825	case 0x0414/4:
r8636	r8637
759	829	case 0x0510/4: case 0x0514/4: case 0x0518/4: case 0x051c/4:
760	830	case 0x0520/4: case 0x0524/4: case 0x0528/4: case 0x052c/4:
761	831	case 0x0530/4: case 0x0534/4: case 0x0538/4: case 0x053c/4:
762		return clio.sel[offset & 0x1f];
	832	return clio.sel;
763	833
764	834	case 0x0540/4: case 0x0544/4: case 0x0548/4: case 0x054c/4:
765	835	case 0x0550/4: case 0x0554/4: case 0x0558/4: case 0x055c/4:
766	836	case 0x0560/4: case 0x0564/4: case 0x0568/4: case 0x056c/4:
767	837	case 0x0570/4: case 0x0574/4: case 0x0578/4: case 0x057c/4:
768		return clio.poll[offset & 0x1f];
	838	return clio.poll;
769	839
770	840	case 0xc000/4:
771	841	return clio.unclerev;
r8636	r8637
984	1054	clio.dmareqdis = data;
985	1055	break;
986	1056
	1057	case 0x0400/4:
	1058	clio.expctl = clio.expctl | ( data & 0xca00 );
	1059	break;
	1060	case 0x0404/4:
	1061	clio.expctl = clio.expctl & ~( data & 0xca00 );
	1062	break;
987	1063	case 0x0408/4:
988	1064	clio.type0_4 = data;
989	1065	break;
r8636	r8637
992	1068	case 0x0510/4: case 0x0514/4: case 0x0518/4: case 0x051c/4:
993	1069	case 0x0520/4: case 0x0524/4: case 0x0528/4: case 0x052c/4:
994	1070	case 0x0530/4: case 0x0534/4: case 0x0538/4: case 0x053c/4:
995		clio.sel[offset & 0x1f] = data;
	1071	clio.sel = data & 0xff;
996	1072	/* Start WRSEL cycle */
997		clio.poll[offset & 0x1f] = 0x10;
	1073
	1074	/* Detection of too many devices on the bus */
	1075	switch ( data & 0xff )
	1076	{
	1077	case 0x8f:
	1078	/* Everything is fine, there are not too many devices in the system */
	1079	clio.poll = ( clio.poll & 0x0f );
	1080	break;
	1081	default:
	1082	clio.poll = ( clio.poll & 0x0f ) | 0x90;
	1083	}
998	1084	break;
999	1085
	1086	case 0x0540/4: case 0x0544/4: case 0x0548/4: case 0x054c/4:
	1087	case 0x0550/4: case 0x0554/4: case 0x0558/4: case 0x055c/4:
	1088	case 0x0560/4: case 0x0564/4: case 0x0568/4: case 0x056c/4:
	1089	case 0x0570/4: case 0x0574/4: case 0x0578/4: case 0x057c/4:
	1090	clio.poll = ( clio.poll & 0xf8 ) | ( data & 0x07 );
	1091	break;
	1092
1000	1093	case 0xc000/4:
1001	1094	case 0xc004/4:
1002	1095	case 0xc00c/4:
r8636	r8637
1019	1112	clio.revision = 0x02022000 /* 0x04000000 */;
1020	1113	clio.cstatbits = 0x01;   /* bit 0 = reset of clio caused by power on */
1021	1114	clio.unclerev = 0x03800000;
	1115	clio.expctl = 0x80;   /* ARM has the expansion bus */
1022	1116	}
1023	1117
1024	1118

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