33                 1  5/3 reads on ports 1 & 2, 8-bit writes
35                 3  8-bit EPP mode
41 #define j53(a,b)                (((a>>3)&0x1f)+((b<<4)&0xe0))
58                 w0(r); w2(1); w2(3); w0(r);  in epia_read_regr()
64                 w2(3); w2(5); w0(r|0xf0);  in epia_read_regr()
73 	case 3:  in epia_read_regr()
93                 w0(r); w2(1); w0(val); w2(3); w2(4);  in epia_write_regr()
96 	case 3:  in epia_write_regr()
108    some EPP counters ...  currently we know about 3 different block
120         if (pi->mode >= 3) {   in epia_connect()
138 {       int     k, ph, a, b;  in epia_read_block()  local
142         case 0: w0(0x81); w2(1); w2(3); w0(0xc1);  in epia_read_block()
144                 for (k=0;k<count;k++) {  in epia_read_block()
147                         buf[k] = j44(a,b);  in epia_read_block()
153         case 1: w0(0x91); w2(1); w0(0x10); w2(3);   in epia_read_block()
156                 for (k=0;k<count;k++) {  in epia_read_block()
159                         buf[k] = j53(a,b);  in epia_read_block()
167                 for (k=0;k<count;k++) {  in epia_read_block()
169                         buf[k] = r0();  in epia_read_block()
175         case 3: if (count > 512) WR(0x84,3);  in epia_read_block()
177                 for (k=0;k<count;k++) buf[k] = r4();  in epia_read_block()
181         case 4: if (count > 512) WR(0x84,3);  in epia_read_block()
183 		for (k=0;k<count/2;k++) ((u16 *)buf)[k] = r4w();  in epia_read_block()
187         case 5: if (count > 512) WR(0x84,3);  in epia_read_block()
189                 for (k=0;k<count/4;k++) ((u32 *)buf)[k] = r4l();  in epia_read_block()
198 {       int     ph, k, last, d;  in epia_write_block()  local
204         case 2: w0(0xa1); w2(1); w2(3); w2(1); w2(5);  in epia_write_block()
206                 for (k=0;k<count;k++) {  in epia_write_block()
207                         d = buf[k];  in epia_write_block()
215         case 3: if (count < 512) WR(0x84,1);  in epia_write_block()
217                 for (k=0;k<count;k++) w4(buf[k]);  in epia_write_block()
223                 for (k=0;k<count/2;k++) w4w(((u16 *)buf)[k]);  in epia_write_block()
229                 for (k=0;k<count/4;k++) w4l(((u32 *)buf)[k]);  in epia_write_block()
239 {       int     j, k, f;  in epia_test_proto()  local
245             for (k=0;k<256;k++) {  in epia_test_proto()
246                 WR(2,k^0xaa);  in epia_test_proto()
247                 WR(3,k^0x55);  in epia_test_proto()
248                 if (RR(2) != (k^0xaa)) e[j]++;  in epia_test_proto()
250 	    WR(2,1); WR(3,1);  in epia_test_proto()
258         for (k=0;k<256;k++) {  in epia_test_proto()
259             if ((scratch[2*k] & 0xff) != ((k+1) & 0xff)) f++;  in epia_test_proto()
260             if ((scratch[2*k+1] & 0xff) != ((-2-k) & 0xff)) f++;  in epia_test_proto()
277 {       char    *mode_string[6] = {"4-bit","5/3","8-bit",  in epia_log_adapter()
291 	.epp_first	= 3,