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Leaked source code of windows server 2003
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windows-server-2003/base/mvdm/dos/v86/doskrnl/bios/biostruc.inc

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  1. ; rom bios call packet structures
  3. ;*******************************
  4. ;system service call ( int 15h )
  5. ;*******************************
  6. ;function ah = 0c0h, return system configuration
  7. ;for pc and pcjr on return:
  8. ; (ah) = 80h
  9. ; (cy) = 1
  10. ;for pcxt, pc portable and pcat on return:
  11. ; (ah) = 86h
  12. ; (cy) = 1
  13. ;for all others:
  14. ; (ah) = 0
  15. ; (cy) = 0
  16. ; (es:bx) = pointer to system descriptor vector in ros
  17. ; system descriptor :
  18. ; dw xxxx length of descriptor in bytes,
  19. ; minimum length = 8
  20. ; db xx model byte
  21. ; 0ffh = pc
  22. ; 0feh = pc/xt, portable
  23. ; 0fdh = pc/jr
  24. ; 0fch = pc/at, 6mhz pc/at,
  25. ; 6mhz pc/at running coprocessor(?),
  26. ; ps/2 model 50, 50 z
  27. ; 0fah = ps/2 model 25, 30
  28. ; 0f9h = pc convertible
  29. ; 0f8h = ps/2 model 80
  30. ; 0f7h = nova
  31. ; 0e0 thru 0efh = reserved
  32. ;
  33. ; db xx secondary model byte
  34. ; 000h = pc1
  35. ; 000h = pc/xt, portable
  36. ; 000h = pc/jr
  37. ; 000h = pc/at
  38. ; 001h = 6mhz pc/at
  39. ; 003h = 6mhz pc/at running coprocessor(?)
  40. ; 004h = ps/2 model 50, 50z
  41. ; 001h = ps/2 model 25
  42. ; 000h = pc convertible
  43. ; 000h = ps/2 model 80
  44. ; 000h = nova
  45. ;
  46. ; db xx bios revision level
  47. ; 00 for first release, subsequent release
  48. ; of code with same model byte and
  49. ; secondary model byte require revison level
  50. ; to increase by one.
  51. ;
  52. ; db xx feature information byte 1
  53. ; x0000000 = 1, bios use dma channel 3
  54. ; = 0, dma channel 3 not used
  55. ;
  56. ; 0x000000 = 1, 2nd interrupt chip present
  57. ; = 0, 2nd interrupt chip not present
  58. ;
  59. ; 00x00000 = 1, real time clock present
  60. ; = 0, real time clock not present
  61. ;
  62. ; 000x0000 = 1, keyboard escape sequence(int15h)
  63. ; called in keyboard interrupt
  64. ; (int 09h).
  65. ; = 0, keyboard escape sequence not
  66. ; called.
  67. ; 0000xxxx reserved
  68. ;
  69. ; db xx feature information byte 2 - reserved
  70. ;
  71. ; db xx feature information byte 2 - reserved
  72. ;
  73. ; db xx feature information byte 2 - reserved
  74. ;
  75. ; db xx feature information byte 2 - reserved
  76. ;
  78. bios_system_descriptor struc
  79. bios_sd_leng dw ?
  80. bios_sd_modelbyte db ?
  81. bios_sd_scnd_modelbyte db ?
  82. db ?
  83. bios_sd_featurebyte1 db ?
  84. db 4 dup (?)
  85. bios_system_descriptor ends
  87. ;featurebyte1 bit map equates
  88. dmachannel3 equ 10000000b
  89. scndintcontroller equ 01000000b
  90. realtimeclock equ 00100000b
  91. keyescapeseq equ 00010000b
  92. ;
  93. ;model byte
  94. mdl_pc1 equ 0ffh
  95. mdl_xt equ 0feh
  96. mdl_jr equ 0fdh
  97. mdl_at equ 0fch
  98. mdl_convert equ 0f9h
  100. mdl_ps2_30 equ 0fah
  101. mdl_ps2_80 equ 0f8h