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Text File  |  1996-07-30  |  2.3 KB  |  143 lines
  1. *****************************************
  2. *                    *
  3. *    TwentyOne.x üué╞éúéÑé╔éíéφé±üv    *
  4. *    patch for human Ver 2.02,2.03    *
  5. *                    *
  6. *****************************************
  7. *
  8. *    file name:    options.s
  9. *    author:        édéÿéö (T.Kawamoto)
  10. *    last modify:    92/3/1
  11. *            92/3/17 thanks YUU(HARUKA)
  12. *
  13. blpeek:    macro
  14.     moveq.l    #$84,d0
  15.     trap    #15
  16.     endm
  17. *
  18. getpdb:    macro
  19.     dc.w    $ff51
  20.     endm
  21. *
  22.     .xdef    _TwentyOneOptions
  23. *
  24.     .text
  25. *
  26. _TwentyOneOptions:
  27.     movem.l    a0-a2,-(sp)
  28.     bsr    search_memory_blindly
  29.     tst.l    d0
  30.     bne    return
  31.     bsr    search_device_blindly
  32. return:
  33.     movem.l    (sp)+,a0-a2
  34.     rts
  35. *
  36. search_device_blindly:
  37.     lea    $00006800,a1
  38. search_NUL_device_loop:
  39.     cmp.l    #$00020000,a1
  40.     bcc    sd_not_found
  41.     blpeek
  42.     cmp.l    #'NUL ',d0
  43.     beq    found_NUL_device
  44. *    lea    4(a1),a1            * ê╚ë║é╠ùvù╠éµéΦ
  45.                         * é▒é▒é┼âCâôâNâèâüâôâgé╖éΘòKùvé═
  46.                         * éáéΦé▄é╣é±    1992.03.17 YUU(HARUKA).
  47.     cmp.w    #'NU',d0
  48.     bne    search_NUL_device_loop
  49.     lea    -2(a1),a1
  50.     bra    search_NUL_device_loop
  51. *
  52. found_NUL_device:
  53. *    lea    -14(a1),a1            * ü⌐ é▒é▒é¬é¿é⌐é╡éó
  54.     lea    -18(a1),a1            * IOCS B_LPEEK é╠û▀éΦÆl a1
  55.                         * é═ d0 é╠Ælé≡ĵô╛é╡é╜âAâhâîâX + 4
  56.                         * é╚é╠é┼ăé╠âfâoâCâXé╓é╠âAâhâîâXé═
  57.                         * -18(a1) é╞é╚éΦé▄é╖    1992.03.17 YUU.
  58. search_device:
  59.     blpeek
  60. sd_loop:
  61.     move.l    d0,a0
  62.     lea    $000E(a0),a2
  63.     bsr    check_TW
  64.     tst.l    d0
  65.     bne    sd_end
  66.     lea.l    (a0),a1
  67.     blpeek
  68.     cmp.l    #$ffffffff,d0
  69.     bne    sd_loop
  70. sd_not_found:
  71.     moveq.l    #0,d0
  72. sd_end:
  73.     rts
  74. *
  75. search_memory_blindly:
  76.     getpdb
  77.     move.l    d0,a1
  78.     lea    -16(a1),a1
  79. search_top_loop:
  80.     lea    4(a1),a1
  81.     blpeek
  82.     tst.l    d0
  83.     beq    found_top
  84.     move.l    d0,a1
  85.     bra    search_top_loop
  86. *
  87. found_top:
  88.     lea    -8(a1),a1            * é╚é║é⌐é▒é╠ìsé¬âRâüâôâgìsé╔é╚é┴é─éóé▄é╡é╜
  89. *    lea    8(a1),a1            * æ╜ò¬é▒é┴é┐é¬âRâüâôâgìsé╛é╞Ävéóé▄é╖
  90.                         * 1992.03.17 YUU(HARUKA).
  91. search_memory:
  92.     lea    12(a1),a1
  93.     blpeek
  94. sm_loop:
  95.     move.l    d0,a0
  96.     lea    $010E(a0),a2
  97.     bsr    check_TW
  98.     tst.l    d0
  99.     bne    sm_end
  100.     lea    $000C(a0),a1
  101.     blpeek
  102.     tst.l    d0
  103.     bne    sm_loop
  104.     moveq.l    #0,d0
  105. sm_end:
  106.     rts
  107. *
  108. check_TW:
  109.     lea    (a2),a1
  110.     blpeek
  111.     cmp.l    #'?Twe',d0
  112.     beq    check_new
  113.     cmp.l    #'*Twe',d0
  114.     bne    check_error
  115. check_old:
  116.     lea    $0004(a2),a1
  117.     blpeek
  118.     cmp.l    #'nty*',d0
  119.     bne    check_error
  120.     moveq.l    #-1,d0
  121.     rts
  122. *
  123. check_new:
  124.     lea    $0004(a2),a1
  125.     blpeek
  126.     cmp.l    #'nty?',d0
  127.     beq    check_new_E
  128.     cmp.l    #'ntyE',d0
  129.     bne    check_error
  130. check_new_E:
  131.     lea    $0008(a2),a1
  132.     blpeek
  133.     rts
  134. *
  135. check_error:
  136.     moveq.l    #0,d0
  137.     rts
  138. *
  139.     dc.b    'TwentyOne Option Checker Ver 1.00 '
  140.     dc.b    'Copyright 1991,92 édéÿéö (és.éjawamoto)',0
  141. *
  142.     .end
  143.