5  * on26.c is a low-level protocol driver for the
26 #define j44(a, b)	(((a >> 4) & 0x0f) | (b & 0xf0))  argument
30 		w2(5); w2(0xd); w2(5); w2(0xd); w2(5); w2(4); \
35 		w2(5); w2(7); w2(5); w2(4);	\
45 	int a, b, r;  in on26_read_regr()  local
52 		w2(6); a = r1(); w2(4);  in on26_read_regr()
55 		return j44(a, b);  in on26_read_regr()
58 		w2(0x26); a = r0(); w2(4); w2(0x26); w2(4);  in on26_read_regr()
59 		return a;  in on26_read_regr()
63 		w3(1); w3(1); w2(5); w4(r); w2(4);  in on26_read_regr()
64 		w3(0); w3(0); w2(0x24); a = r4(); w2(4);  in on26_read_regr()
66 		return a;  in on26_read_regr()
85 		w3(1); w3(1); w2(5); w4(r); w2(4);  in on26_write_regr()
87 		w2(5); w4(val); w2(4);  in on26_write_regr()
88 		w2(5); w4(val); w2(4);  in on26_write_regr()
97 		w2(4); w2(5); w2(4); w0(0xff);		\
141 	pi->delay = 5;  in on26_test_port()
151 	w0(0x20); w2(4); w2(5);  in on26_test_port()
188 	return 5;  in on26_test_port()
193 	int k, a, b;  in on26_read_block()  local
200 			w2(6); a = r1();  in on26_read_block()
202 			buf[k] = j44(a, b);  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()
253 			w2(5); w0(buf[2 * k]);  in on26_write_block()
256 		w2(5); w2(4);  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()
288 	char *mode_string[5] = { "4-bit", "8-bit", "EPP-8", "EPP-16", "EPP-32" };  in on26_log_adapter()
298 	.max_mode	= 5,