1/* 2 * Copyright (c) 1980, 1986 Regents of the University of California. 3 * All rights reserved. The Berkeley software License Agreement 4 * specifies the terms and conditions for redistribution. 5 */ 6 7#ifndef lint 8_sccsid:.asciz "@(#)tmtoggle.s 7.1 (Berkeley) 06/05/86" 9#endif not lint 10 11/* 12 * Prototype toggle in bootstrap code for tm type tapes. 13 * If on anything but a 780 with the drive on uba0 14 * this will have to be repaired by patching uba and umem. 15 */ 16begin: 17 movl uba,r1 18 movl $0x80200000,0x800(r1) 19 clrl 0x804(r1) 20 movl umem,r2 21 bisl2 $0172520,r2 22 mnegw $512,4(r2) 23 clrw 6(r2) 24 movw $03,2(r2) 25 halt 26 .align 2 27uba: .long 0x20006000 28umem: .long 0x2013e000 29