20  *		1  8-bit reads and writes
40  * cont = 1 - access the IDE command set
47 	r = (regr << 2) + 1 + cont;  in on26_read_regr()
51 		w0(1); P1; w0(r); P2; w0(0); P1;  in on26_read_regr()
56 	case 1:  in on26_read_regr()
57 		w0(1); P1; w0(r); P2; w0(0); P1;  in on26_read_regr()
63 		w3(1); w3(1); w2(5); w4(r); w2(4);  in on26_read_regr()
69 	return -1;  in on26_read_regr()
74 	int r = (regr << 2) + 1 + cont;  in on26_write_regr()
78 	case 1:  in on26_write_regr()
79 		w0(1); P1; w0(r); P2; w0(0); P1;  in on26_write_regr()
85 		w3(1); w3(1); w2(5); w4(r); w2(4);  in on26_write_regr()
193 	int k, a, b;  in on26_read_block()  local
197 		w0(1); P1; w0(1); P2; w0(2); P1; w0(0x18); P2; w0(0); P1;  in on26_read_block()
199 		for (k = 0; k < count; k++) {  in on26_read_block()
202 			buf[k] = j44(a, b);  in on26_read_block()
206 	case 1:  in on26_read_block()
207 		w0(1); P1; w0(1); P2; w0(2); P1; w0(0x19); P2; w0(0); P1;  in on26_read_block()
209 		for (k = 0; k < count / 2; k++) {  in on26_read_block()
210 			w2(0x26); buf[2 * k] = r0();  in on26_read_block()
211 			w2(0x24); buf[2 * k + 1] = r0();  in on26_read_block()
216 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
219 		for (k = 0; k < count; k++)  in on26_read_block()
220 			buf[k] = r4();  in on26_read_block()
224 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
227 		for (k = 0; k < count / 2; k++)  in on26_read_block()
228 			((u16 *)buf)[k] = r4w();  in on26_read_block()
232 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
235 		for (k = 0; k < count / 4; k++)  in on26_read_block()
236 			((u32 *)buf)[k] = r4l();  in on26_read_block()
244 	int k;  in on26_write_block()  local
248 	case 1:  in on26_write_block()
249 		w0(1); P1; w0(1); P2;  in on26_write_block()
252 		for (k = 0; k < count / 2; k++) {  in on26_write_block()
253 			w2(5); w0(buf[2 * k]);  in on26_write_block()
254 			w2(7); w0(buf[2 * k + 1]);  in on26_write_block()
260 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
263 		for (k = 0; k < count; k++)  in on26_write_block()
264 			w4(buf[k]);  in on26_write_block()
268 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
271 		for (k = 0; k < count / 2; k++)  in on26_write_block()
272 			w4w(((u16 *)buf)[k]);  in on26_write_block()
276 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
279 		for (k = 0; k < count / 4; k++)  in on26_write_block()
280 			w4l(((u32 *)buf)[k]);  in on26_write_block()
300 	.default_delay	= 1,
301 	.max_units	= 1,