5  * dstr.c is a low-level protocol driver for the DataStor EP2000 parallel
23  *		4  EPP-32
26 #define j44(a, b)  (((a >> 3) & 0x07) | ((~a >> 4) & 0x08) | \  argument
29 #define P1	w2(5);w2(0xd);w2(5);w2(4);
30 #define P2	w2(5);w2(7);w2(5);w2(4);
31 #define P3      w2(6);w2(4);w2(6);w2(4);
41 	int a, b, r;  in dstr_read_regr()  local
54 		w2(6); a = r1(); w2(4); w2(6); b = r1(); w2(4);  in dstr_read_regr()
55 		return j44(a, b);  in dstr_read_regr()
57 		w0(0); w2(0x26); a = r0(); w2(4);  in dstr_read_regr()
58 		return a;  in dstr_read_regr()
61 	case 4:  in dstr_read_regr()
62 		w2(0x24); a = r4(); w2(4);  in dstr_read_regr()
63 		return a;  in dstr_read_regr()
83 		w0(val); w2(5); w2(7); w2(5); w2(4);  in dstr_write_regr()
87 	case 4:  in dstr_write_regr()
95 		w0(0xff); w2(0xc); w2(4);		\
98 		w0(x); w2(5); w2(4);			\
105 	w2(4); CCP(0xe0); w0(0xff);  in dstr_connect()
117 	int k, a, b;  in dstr_read_block()  local
129 			w2(6); a = r1(); w2(4);  in dstr_read_block()
130 			w2(6); b = r1(); w2(4);  in dstr_read_block()
131 			buf[k] = j44(a, b);  in dstr_read_block()
141 		w2(4);  in dstr_read_block()
147 		w2(4);  in dstr_read_block()
153 		w2(4);  in dstr_read_block()
155 	case 4:  in dstr_read_block()
157 		for (k = 0; k < count / 4; k++)  in dstr_read_block()
159 		w2(4);  in dstr_read_block()
183 		w2(5); w2(4);  in dstr_write_block()
197 	case 4:  in dstr_write_block()
199 		for (k = 0; k < count / 4; k++)  in dstr_write_block()
209 	char *mode_string[5] = { "4-bit", "8-bit", "EPP-8", "EPP-16", "EPP-32" };  in dstr_log_adapter()