111 		out_8(&via[B], in_8(&via[B]) | TIP);  in assert_TIP()
113 		out_8(&via[B], in_8(&via[B]) & ~TIP);  in assert_TIP()
120 		out_8(&via[B], in_8(&via[B]) | TIP | TACK);  in assert_TIP_and_TACK()
122 		out_8(&via[B], in_8(&via[B]) & ~(TIP | TACK));  in assert_TIP_and_TACK()
129 		out_8(&via[B], in_8(&via[B]) | TACK);  in assert_TACK()
131 		out_8(&via[B], in_8(&via[B]) & ~TACK);  in assert_TACK()
136 	out_8(&via[B], in_8(&via[B]) ^ TACK);  in toggle_TACK()
143 		out_8(&via[B], in_8(&via[B]) & ~TACK);  in negate_TACK()
145 		out_8(&via[B], in_8(&via[B]) | TACK);  in negate_TACK()
152 		out_8(&via[B], in_8(&via[B]) & ~(TIP | TACK));  in negate_TIP_and_TACK()
154 		out_8(&via[B], in_8(&via[B]) | TIP | TACK);  in negate_TIP_and_TACK()
343 	if (TREQ_asserted(in_8(&via[B]))) {  in sync_egret()
349 			(void)in_8(&via[SR]);  in sync_egret()
351 			if (!TREQ_asserted(in_8(&via[B])))  in sync_egret()
355 	} else if (in_8(&via[B]) & TIP) {  in sync_egret()
363 	if (in_8(&via[IFR]) & SR_INT)  in sync_egret()
364 		(void)in_8(&via[SR]);  in sync_egret()
385     (void)in_8(&via[IER]);  in cuda_init_via()
390     out_8(&via[DIRB], (in_8(&via[DIRB]) | TACK | TIP) & ~TREQ);	/* TACK & TIP out */  in cuda_init_via()
391     out_8(&via[ACR], (in_8(&via[ACR]) & ~SR_CTRL) | SR_EXT);	/* SR data in */  in cuda_init_via()
392     (void)in_8(&via[SR]);					/* clear any left-over data */  in cuda_init_via()
401     (void)in_8(&via[SR]);  in cuda_init_via()
408     WAIT_FOR(TREQ_asserted(in_8(&via[B])), "CUDA response to sync");  in cuda_init_via()
411     WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (2)");  in cuda_init_via()
412     (void)in_8(&via[SR]);  in cuda_init_via()
419     WAIT_FOR(!TREQ_asserted(in_8(&via[B])), "CUDA response to sync (3)");  in cuda_init_via()
420     WAIT_FOR(in_8(&via[IFR]) & SR_INT, "CUDA response to sync (4)");  in cuda_init_via()
421     (void)in_8(&via[SR]);  in cuda_init_via()
544     if (TREQ_asserted(in_8(&via[B])))  in cuda_start()
548     out_8(&via[ACR], in_8(&via[ACR]) | SR_OUT);  in cuda_start()
589         if ((in_8(&via[IFR]) & SR_INT) == 0) {  in cuda_interrupt()
597     status = in_8(&via[B]) & (TIP | TACK | TREQ);  in cuda_interrupt()
602 	(void)in_8(&via[SR]);  in cuda_interrupt()
612 	(void)in_8(&via[SR]);  in cuda_interrupt()
622 	    out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);  in cuda_interrupt()
623 	    (void)in_8(&via[SR]);  in cuda_interrupt()
641 	    out_8(&via[ACR], in_8(&via[ACR]) & ~SR_OUT);  in cuda_interrupt()
642 	    (void)in_8(&via[SR]);  in cuda_interrupt()
666 	    (void)in_8(&via[SR]);  in cuda_interrupt()
668 	    *reply_ptr++ = in_8(&via[SR]);  in cuda_interrupt()
686 	(void)in_8(&via[SR]);  in cuda_interrupt()
719 	if (cuda_state == idle && TREQ_asserted(in_8(&via[B]))) {  in cuda_interrupt()