155135Storek /* 2*63322Sbostic * Copyright (c) 1992, 1993 3*63322Sbostic * The Regents of the University of California. All rights reserved. 455135Storek * 555135Storek * This software was developed by the Computer Systems Engineering group 655135Storek * at Lawrence Berkeley Laboratory under DARPA contract BG 91-66 and 755135Storek * contributed to Berkeley. 855135Storek * 955503Sbostic * All advertising materials mentioning features or use of this software 1055503Sbostic * must display the following acknowledgement: 1155503Sbostic * This product includes software developed by the University of 1259213Storek * California, Lawrence Berkeley Laboratory. 1355503Sbostic * 1455135Storek * %sccs.include.redist.c% 1555135Storek * 16*63322Sbostic * @(#)bwtworeg.h 8.1 (Berkeley) 06/11/93 1755135Storek * 1859213Storek * from: $Header: bwtworeg.h,v 1.4 92/11/26 02:28:05 torek Exp $ 1955135Storek */ 2055135Storek 2155135Storek /* 2255135Storek * bwtwo display registers. 2355135Storek * 2455135Storek * The registers start at offset 0x400000 and repeat every 32 bytes 2555135Storek * (presumably only the low order address lines are decoded). Video RAM 2655135Storek * starts at offset 0x800000. We use separate pointers to each so that 2755135Storek * the sparc addressing modes work well. 2855135Storek */ 2955135Storek struct bwtworeg { 3055135Storek /* 3155135Storek * The xxx0 range is all 0xff on my IPC but causes a screen glitch 3255135Storek * on my SS1+, so it must do *some*thing... the xxx1 range is full 3355135Storek * of values but I do not know what they are. bw_ctl changes for 3455135Storek * a blanked screen. 3555135Storek */ 3655135Storek char bw_xxx0[16]; 3755135Storek u_char bw_ctl; /* contains video enable */ 3855135Storek char bw_xxx1[15]; 3955135Storek }; 4055135Storek 4155135Storek /* bits in bw_ctl */ 4255135Storek #define CTL_VE 0x40 /* video enable */ 4355135Storek 4455135Storek /* offsets */ 4555135Storek #define BWREG_ID 0 4655135Storek #define BWREG_REG 0x400000 4755135Storek #define BWREG_MEM 0x800000 4855135Storek 4955135Storek /* same, but for gdb */ 5055135Storek struct bwtwo_all { 5155135Storek long ba_id; /* ID = 0xfe010104 on my IPC */ 5255135Storek char ba_xxx0[0x400000-4]; 5355135Storek struct bwtworeg ba_reg; /* control registers */ 5455135Storek char ba_xxx1[0x400000-32]; 5555135Storek char ba_ram[4096]; /* actually larger */ 5655135Storek }; 57