108 		out_8(&via[B], in_8(&via[B]) | TIP);  in assert_TIP()
110 		out_8(&via[B], in_8(&via[B]) & ~TIP);  in assert_TIP()
117 		out_8(&via[B], in_8(&via[B]) | TIP | TACK);  in assert_TIP_and_TACK()
119 		out_8(&via[B], in_8(&via[B]) & ~(TIP | TACK));  in assert_TIP_and_TACK()
126 		out_8(&via[B], in_8(&via[B]) | TACK);  in assert_TACK()
128 		out_8(&via[B], in_8(&via[B]) & ~TACK);  in assert_TACK()
133 	out_8(&via[B], in_8(&via[B]) ^ TACK);  in toggle_TACK()
140 		out_8(&via[B], in_8(&via[B]) & ~TACK);  in negate_TACK()
142 		out_8(&via[B], in_8(&via[B]) | TACK);  in negate_TACK()
149 		out_8(&via[B], in_8(&via[B]) & ~(TIP | TACK));  in negate_TIP_and_TACK()
151 		out_8(&via[B], in_8(&via[B]) | TIP | TACK);  in negate_TIP_and_TACK()
340 	if (TREQ_asserted(in_8(&via[B]))) {  in sync_egret()
346 			(void)in_8(&via[SR]);  in sync_egret()
348 			if (!TREQ_asserted(in_8(&via[B])))  in sync_egret()
352 	} else if (in_8(&via[B]) & TIP) {  in sync_egret()
360 	if (in_8(&via[IFR]) & SR_INT)  in sync_egret()
361 		(void)in_8(&via[SR]);  in sync_egret()
382     (void)in_8(&via[IER]);  in cuda_init_via()
387     out_8(&via[DIRB], (in_8(&via[DIRB]) | TACK | TIP) & ~TREQ);	/* TACK & TIP out */  in cuda_init_via()
388     out_8(&via[ACR], (in_8(&via[ACR]) & ~SR_CTRL) | SR_EXT);	/* SR data in */  in cuda_init_via()
389     (void)in_8(&via[SR]);					/* clear any left-over data */  in cuda_init_via()
398     (void)in_8(&via[SR]);  in cuda_init_via()
405     WAIT_FOR(TREQ_asserted(in_8(&via[B])), "CUDA response to sync");  in cuda_init_via()
408     WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (2)");  in cuda_init_via()
409     (void)in_8(&via[SR]);  in cuda_init_via()
416     WAIT_FOR(!TREQ_asserted(in_8(&via[B])), "CUDA response to sync (3)");  in cuda_init_via()
417     WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (4)");  in cuda_init_via()
418     (void)in_8(&via[SR]);  in cuda_init_via()
541     if (TREQ_asserted(in_8(&via[B])))  in cuda_start()
545     out_8(&via[ACR], in_8(&via[ACR]) | SR_OUT);  in cuda_start()
586         if ((in_8(&via[IFR]) & SR_INT) == 0) {  in cuda_interrupt()
594     status = in_8(&via[B]) & (TIP | TACK | TREQ);  in cuda_interrupt()
599 	(void)in_8(&via[SR]);  in cuda_interrupt()
609 	(void)in_8(&via[SR]);  in cuda_interrupt()
619 	    out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);  in cuda_interrupt()
620 	    (void)in_8(&via[SR]);  in cuda_interrupt()
638 	    out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);  in cuda_interrupt()
639 	    (void)in_8(&via[SR]);  in cuda_interrupt()
663 	    (void)in_8(&via[SR]);  in cuda_interrupt()
665 	    *reply_ptr++ = in_8(&via[SR]);  in cuda_interrupt()
683 	(void)in_8(&via[SR]);  in cuda_interrupt()
716 	if (cuda_state == idle && TREQ_asserted(in_8(&via[B]))) {  in cuda_interrupt()