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Annotation of 42BSD/sys/mdec/httoggle.s, revision 1.1.1.1

1.1       root        1: /*     httoggle.s      6.1     83/07/29        */
                      2: 
                      3: /*
                      4:  * Prototype toggle in bootstrap code for ht type tapes.
                      5:  * If on anything but a 780 with a tape at slave 1 of mba 1
                      6:  * this will have to be repaired by patching mba and ht.
                      7:  */
                      8:        movl    mba,r10
                      9:        mull3   ht,$0x80,r11
                     10:        addl3   r11,r10,r11
                     11:        addl2   $0x400,r11
                     12:        movl    $1,4(r10)
                     13:        movl    $9,(r11)
                     14:        cvtwl   $012300,0x24(r11)
                     15:        clrl    12(r10)
                     16:        movl    $0x80000000,0x800(r10)
                     17:        cvtwl   $-512,16(r10)
                     18:        movl    $0x39,(r11)
                     19:        halt
                     20:        .align  2
                     21: mba:   .long   0x20012000
                     22: ht:    .long   0

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