1 /* 2 * Copyright (c) 1992, 1993 3 * The Regents of the University of California. All rights reserved. 4 * 5 * This software was developed by the Computer Systems Engineering group 6 * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 7 * contributed to Berkeley. 8 * 9 * All advertising materials mentioning features or use of this software 10 * must display the following acknowledgement: 11 * This product includes software developed by the University of 12 * California, Lawrence Berkeley Laboratory. 13 * 14 * %sccs.include.redist.c% 15 * 16 * @(#)auxreg.h 8.1 (Berkeley) 06/11/93 17 * 18 * from: $Header: auxreg.h,v 1.8 92/11/26 03:04:45 torek Exp $ (LBL) 19 */ 20 21 /* 22 * Sun-4c Auxiliary I/O register. This register talks to the floppy 23 * (if it exists) and the front-panel LED. 24 */ 25 26 #define AUXIO_MB1 0xf0 /* must be set on write */ 27 #define AUXIO_FHD 0x20 /* floppy: high density (unreliable?)*/ 28 #define AUXIO_FDC 0x10 /* floppy: diskette was changed */ 29 #define AUXIO_FDS 0x08 /* floppy: drive select */ 30 #define AUXIO_FTC 0x04 /* floppy: drives Terminal Count pin */ 31 #define AUXIO_FEJ 0x02 /* floppy: eject disk */ 32 #define AUXIO_LED 0x01 /* front panel LED */ 33 34 /* 35 * We use a fixed virtual address for the register because we use it for 36 * timing short sections of code (via external hardware attached to the LED). 37 */ 38 #define AUXIO_REG ((volatile u_char *)(AUXREG_VA + 3)) 39 40 #define LED_ON *AUXIO_REG = AUXIO_MB1|AUXIO_FEJ|AUXIO_LED 41 #define LED_OFF *AUXIO_REG = AUXIO_MB1|AUXIO_FEJ 42 #define LED_FLIP *AUXIO_REG = (*AUXIO_REG | AUXIO_MB1) ^ AUXIO_LED 43 44 #define AUXIO_BITS "\20\6FHD\5FDC\4FDS\3FTC\2FEJ\1LED" 45