20  *		1  8-bit reads and writes
28 #define P1						      \  macro
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()
113 	w0(2); P1; w0(8); P2;  in on26_connect()
114 	w0(2); P1; w0(x); P2;  in on26_connect()
122 		w0(4); P1; w0(4); P1;  in on26_disconnect()
156 		w0(2); P1; w0(0);   P2;  in on26_test_port()
157 		w0(3); P1; w0(0);   P2;  in on26_test_port()
158 		w0(2); P1; w0(8);   P2; udelay(100);  in on26_test_port()
159 		w0(2); P1; w0(0xa); P2; udelay(100);  in on26_test_port()
160 		w0(2); P1; w0(8);   P2; udelay(1000);  in on26_test_port()
178 		w0(4); P1; w0(4); P1;  in on26_test_port()
197 		w0(1); P1; w0(1); P2; w0(2); P1; w0(0x18); P2; w0(0); P1;  in on26_read_block()
204 		w0(2); P1; w0(8); P2;  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()
211 			w2(0x24); buf[2 * k + 1] = r0();  in on26_read_block()
213 		w0(2); P1; w0(9); P2;  in on26_read_block()
216 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
224 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
232 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_read_block()
248 	case 1:  in on26_write_block()
249 		w0(1); P1; w0(1); P2;  in on26_write_block()
250 		w0(2); P1; w0(0x18 + pi->mode); P2; w0(0); P1;  in on26_write_block()
254 			w2(7); w0(buf[2 * k + 1]);  in on26_write_block()
257 		w0(2); P1; w0(8 + pi->mode); P2;  in on26_write_block()
260 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
268 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
276 		w3(1); w3(1); w2(5); w4(1); w2(4);  in on26_write_block()
300 	.default_delay	= 1,
301 	.max_units	= 1,