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Annotation of 41BSD/4.0.upgrade/sys/mdec/httoggle.s, revision 1.1

1.1     ! root        1: /*
        !             2:  * Prototype toggle in bootstrap code for ht type tapes.
        !             3:  * If on anything but a 780 with a tape at slave 1 of mba 1
        !             4:  * this will have to be repaired by patching mba and ht.
        !             5:  */
        !             6:        movl    mba,r10
        !             7:        mull3   ht,$0x80,r11
        !             8:        addl3   r11,r10,r11
        !             9:        addl2   $0x400,r11
        !            10:        movl    $1,4(r10)
        !            11:        movl    $9,(r11)
        !            12:        cvtwl   $012300,0x24(r11)
        !            13:        clrl    12(r10)
        !            14:        movl    $0x80000000,0x800(r10)
        !            15:        cvtwl   $-512,16(r10)
        !            16:        movl    $0x39,(r11)
        !            17:        halt
        !            18:        .align  2
        !            19: mba:   .long   0x20012000
        !            20: ht:    .long   0

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