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pascal@19515
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1 ;***************************************************************
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pascal@19515
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2 ;****** This file is distributed under GPL
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pascal@19515
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3 ;***************************************************************
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pascal@19515
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4 ideal
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pascal@24034
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5 %PAGESIZE 255
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pascal@19515
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6 %crefref
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pascal@19515
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7 %noincl
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pascal@19515
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8 %nomacs
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pascal@24019
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9
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pascal@24019
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10 include "common.inc"
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pascal@24019
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11
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pascal@19636
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12 ifdef NO386
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pascal@19636
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13 p8086
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pascal@19636
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14 else
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pascal@19515
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15 p386
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pascal@19636
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16 endif
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pascal@19515
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17
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pascal@23983
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18 group DGROUP _TEXT
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pascal@19515
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19 assume cs:DGROUP,ds:DGROUP
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pascal@19515
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20
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pascal@19515
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21 segment _TEXT byte public use16 'CODE'
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pascal@19515
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22
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pascal@19905
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23 ;***************************************************************
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pascal@20473
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24 ;void dos_shutdown()
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pascal@20473
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25 ;***************************************************************
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pascal@20473
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26
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pascal@20473
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27 macro dos_shutdown
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pascal@24067
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28 xor bx,bx
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pascal@24013
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29 ifdef QUICK_BOOT
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pascal@24013
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30 extrn _cmdnum:dword
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pascal@24067
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31 ifdef CPUTYPE
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pascal@24067
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32 quickboot = (byte _cmdnum+24)
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pascal@24067
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33 else
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pascal@24067
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34 quickboot = (byte _cmdnum+20)
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pascal@24067
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35 endif
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pascal@24067
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36 cmp bl,[quickboot]
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pascal@24067
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37 mov ds,bx
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pascal@24013
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38 jne skip_shutdown
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pascal@24013
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39 else
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pascal@24067
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40 mov ds,bx
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pascal@24013
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41 endif
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pascal@20473
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42 ifndef NO386
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pascal@24067
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43 push [dword bx+4] ; save step
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pascal@24067
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44 mov [word bx+4],offset step19
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pascal@20473
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45 else
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pascal@20473
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46 mov ax,offset step19
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pascal@24067
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47 xchg ax,[word bx+4]
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pascal@24067
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48 push [word bx+6]
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pascal@20473
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49 push ax ; save step
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pascal@20473
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50 endif
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pascal@20473
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51 mov [word cs:sssp],sp
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pascal@24067
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52 ;cmp [byte bx+7],0F0h
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pascal@20473
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53 ;jnc notdos
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pascal@24067
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54 mov [bx+6],cs
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pascal@20473
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55 pushf
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pascal@20473
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56 pushf
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pascal@20473
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57 pop ax
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pascal@20473
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58 inc ah ; set TF
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pascal@20473
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59 push ax
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pascal@20473
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60 popf
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pascal@24067
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61 call [dword bx+4*19h]
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pascal@20473
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62 notdos:
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pascal@20473
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63 ifndef NO386
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pascal@20473
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64 lss sp,[dword cs:sssp]
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pascal@20473
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65 else
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pascal@20473
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66 lds ax,[dword cs:sssp]
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pascal@20473
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67 push ds
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pascal@20473
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68 pop ss
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pascal@20473
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69 xchg ax,sp
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pascal@20473
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70 endif
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pascal@21342
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71 xor si,si
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pascal@21342
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72 mov ds,si
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pascal@21342
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73 pop [dword si+4] ; restore step
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pascal@24013
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74 skip_shutdown:
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pascal@20473
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75 endm
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pascal@20473
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76 macro step19code
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pascal@20473
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77 step19:
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pascal@21342
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78 push si
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pascal@20473
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79 push ds
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pascal@21342
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80 mov si,sp
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pascal@21342
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81 lds si,[dword ss:si+4] ; read cs:ip
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pascal@21342
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82 cmp [word si],19CDh ; int 19h ?
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pascal@20473
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83 pop ds
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pascal@21342
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84 pop si
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pascal@20473
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85 je notdos
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pascal@20473
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86 iret
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pascal@20473
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87 endm
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pascal@20473
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88
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pascal@20473
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89
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pascal@20473
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90 ;***************************************************************
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pascal@19905
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91 ;void boot_kernel();
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pascal@19905
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92 ;****** Never returns
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pascal@19905
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93 ;***************************************************************
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pascal@19905
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94 proc _boot_kernel near
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pascal@19905
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95
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pascal@21757
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96 ifdef NO386
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pascal@20142
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97 p8086
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pascal@19903
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98 else
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pascal@20142
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99 p386
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pascal@19903
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100 endif
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pascal@20473
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101 ;cli ; we start doing destructive things to DOS
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pascal@21757
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102 extrn sssp:word
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pascal@22288
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103 mov ax,[sssp+2]
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pascal@22288
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104 mov es,ax
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pascal@23996
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105 extrn _cmdstr:word
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pascal@23996
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106 _cmdline = _cmdstr+0
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pascal@19571
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107 mov si,[_cmdline]
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pascal@19571
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108 mov di,8000h
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pascal@24095
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109 mov cx,1000h ; 4k for cmdline + 4k up to sp
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pascal@19571
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110 rep
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pascal@24095
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111 movsw
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pascal@22288
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112 push es
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pascal@22288
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113 pop ss
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pascal@22288
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114 mov sp,di
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pascal@22019
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115
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pascal@24019
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116 ifdef LINUX001
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pascal@22288
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117 mov dx,2000h
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pascal@22288
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118 global _csip_hilo:word
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pascal@22288
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119 org $-2
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pascal@22288
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120 _csip_hilo dw ?
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pascal@22288
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121 xchg al,dh ; 9020 / 9000
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pascal@24019
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122 else
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pascal@24019
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123 mov al,20h ; 9020:0
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pascal@24019
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124 xor dx,dx
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pascal@24019
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125 endif
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pascal@22288
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126 push ax
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pascal@22288
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127 push dx ; 0000 / 0042
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pascal@22288
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128
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pascal@22288
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129 mov cl,1 ; load high ?
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pascal@22179
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130 org $-1
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pascal@22288
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131 global _pm_low:byte
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pascal@22288
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132 _pm_low db ?
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pascal@22019
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133 push cx
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pascal@24019
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134 ifdef IPXE
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pascal@22019
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135 mov ax,[word ss:024Ch]
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pascal@22019
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136 xor ax,2b30h ; ipxe ?
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pascal@22019
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137 loopne @@notipxe
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pascal@24019
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138 else
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pascal@24019
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139 loop @@truebzimage
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pascal@24019
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140 endif
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pascal@22019
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141
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pascal@22019
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142 ; finish loading
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pascal@22019
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143 extrn @last_ditch$qv:near
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pascal@22008
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144 push cs
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pascal@22008
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145 call @last_ditch$qv
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pascal@24019
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146 ifdef SHUTDOWN
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pascal@22152
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147 dos_shutdown ; clear si; ds=0; kill VCPI
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pascal@22152
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148 push cs
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pascal@22152
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149 pop ds
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pascal@24019
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150 else
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pascal@24019
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151 xor si,si
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pascal@24019
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152 endif
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pascal@22019
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153
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pascal@24019
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154 @@truebzimage:
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pascal@22019
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155 @@notipxe:
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pascal@22019
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156 pop cx
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pascal@22019
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157 loop @@isbzimage
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pascal@22019
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158
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pascal@20477
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159 ; prepare memcpy32 size & srcofs param to move zImage pm
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pascal@21781
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160 ifndef NO386
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pascal@21781
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161 push 8 ; size hi
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pascal@21781
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162 else
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pascal@20477
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163 mov dx,8
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pascal@20477
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164 push dx ; size hi
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pascal@21781
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165 endif
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pascal@22288
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166 push si ; size lo=up to 512k
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pascal@23984
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167
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pascal@23984
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168 include "himem.inc"
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pascal@23984
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169
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pascal@23984
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170 extrn _imgs:image_himem
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pascal@24034
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171 ifdef NO386
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pascal@24034
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172 les ax,[_imgs.fallback] ; src ofs = pm.fallback
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pascal@24034
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173 push es
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pascal@24034
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174 push ax
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pascal@24034
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175 else
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pascal@23984
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176 push [_imgs.fallback] ; src ofs = pm.fallback
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pascal@24034
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177 endif
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pascal@20477
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178
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pascal@19538
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179 ;in al,70h
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pascal@19538
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180 ;or al,80h ; disable NMI
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pascal@19538
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181 ;out 70h,al
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pascal@20477
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182
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pascal@22288
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183 push si ; src seg=0
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pascal@21628
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184 inc cx
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pascal@21628
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185 push cx ; dst ofs hi
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pascal@24013
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186 push si ; dst ofs lo : 64k = 0x10000
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pascal@22288
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187
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pascal@22288
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188 ; self move
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pascal@22288
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189 extrn gdt_data
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pascal@22288
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190 mov cx,offset gdt_data+8
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pascal@22288
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191 ;xor di,di ; A000 -9000 -0800(>movedend)
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pascal@22288
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192
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pascal@22288
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193 ifdef NO386
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pascal@22288
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194 mov ax,ss
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pascal@24034
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195 add ax,800h+(4096/16)
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pascal@22288
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196 push ax ; topseg()+0x0900
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pascal@22288
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197 else
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pascal@22288
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198 push 9800h+(4096/16) ; 4096 bytes for cmdline
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pascal@22288
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199 endif
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pascal@22288
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200 pop es
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pascal@22288
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201 push es
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pascal@22288
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202
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pascal@24019
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203 ifdef ELKS
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pascal@22288
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204 call near @@movsb@jmp ; movsb; pop cs ; ds=es=ss
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pascal@24019
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205 elseifdef MOVE_SETUP
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pascal@24019
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206 call near @@movsb@jmp ; movsb; pop cs ; ds=es=ss
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pascal@24019
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207 else
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pascal@24019
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208 xor di,di
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pascal@24019
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209 rep
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pascal@24019
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210 movsb
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pascal@24034
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211 call near @@isbzimage ; pop cs ; ds=es=ss
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pascal@24019
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212 endif
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pascal@22288
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213
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pascal@24034
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214 ;mov es,cx
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pascal@24034
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215 ;mov [es:15*4+2],cs ; update int15/88h hook
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pascal@24034
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216
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pascal@20528
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217 extrn memcpy32:near
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pascal@20528
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218 call memcpy32
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pascal@19515
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219
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pascal@22176
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220 ifdef MOVE_SETUP
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pascal@22288
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221 mov si,0
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pascal@22288
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222 global _rm_offset:word
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pascal@22288
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223 org $-2
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pascal@22288
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224 _rm_offset dw ?
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pascal@22176
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225 ;xor di,di
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pascal@22288
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226 ;mov cx,8000h
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pascal@22176
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227 ;sub cx,si
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pascal@22288
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228 ;rep
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pascal@22288
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229 ; movsb
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pascal@22176
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230 endif
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pascal@22176
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231
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pascal@24019
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232 ifdef ELKS
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pascal@22288
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233 ifdef MOVE_SETUP
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pascal@19515
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234 ifndef NO386
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pascal@22288
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235 mov eax,[dword si+1E6h]
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pascal@22288
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236 xor eax,'SKLE'
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pascal@22288
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237 else
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pascal@22288
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238 mov ax,[si+1E6h]
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pascal@22288
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239 xor ax,'LE'
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pascal@20473
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240 jne @@notelks
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pascal@22288
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241 mov ax,[si+1E8h]
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pascal@22288
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242 xor ax,'SK'
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pascal@22288
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243 endif
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pascal@19515
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244 else
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pascal@22288
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245 ifndef NO386
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pascal@22288
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246 mov eax,[dword 1E6h]
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pascal@22288
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247 xor eax,'SKLE'
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pascal@22288
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248 else
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pascal@22288
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249 mov ax,[1E6h]
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pascal@22288
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250 xor ax,'LE'
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pascal@19905
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251 jne @@notelks
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pascal@22288
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252 mov ax,[1E8h]
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pascal@20481
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253 xor ax,'SK'
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pascal@22288
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254 endif
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pascal@22288
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255 endif
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pascal@20473
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256 jne @@notelks
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pascal@22288
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257 mov cx,100h ; DS=ES=SS=0100
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pascal@22288
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258 mov ss,cx
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pascal@22288
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259 push ss
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pascal@22288
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260 pop es
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pascal@22288
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261 mov cl,20h ; CS=0120
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pascal@22288
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262 push cx
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pascal@22288
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263 push ax ; IP=0000
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pascal@19515
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264 endif
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pascal@22179
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265 ifdef MOVE_SETUP
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pascal@22288
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266 @@notelks:
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pascal@22288
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267 mov ch,7Eh
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pascal@22288
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268 @@movsb@jmp:
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pascal@22288
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269 xor di,di
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pascal@22288
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270 rep
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pascal@22288
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271 movsb
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pascal@22179
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272 else
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pascal@24019
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273 ifdef ELKS
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pascal@22288
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274 xchg ax,si
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pascal@22288
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275 mov ch,7Eh ; 0Ah min, 7Eh max
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pascal@22288
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276 @@movsb@jmp:
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pascal@22288
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277 xor di,di
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pascal@19515
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278 rep
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pascal@22288
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279 movsb
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pascal@19905
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280 @@notelks:
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pascal@22288
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281 endif
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pascal@19515
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282 endif
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pascal@19905
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283 @@isbzimage:
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pascal@19515
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284 push ss
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pascal@19515
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285 pop ds
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pascal@20475
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286 push ss
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pascal@20475
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287 pop es
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pascal@19636
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288 ifndef NO386
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pascal@19515
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289 push ss
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pascal@19515
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290 pop fs
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pascal@19515
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291 push ss
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pascal@19515
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292 pop gs
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pascal@19636
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293 endif
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pascal@19515
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294 assume nothing
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pascal@19515
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295 assume cs:DGROUP
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pascal@19515
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296 retf
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pascal@19515
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297
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pascal@24019
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298 ifdef SHUTDOWN
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pascal@20473
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299 step19code
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pascal@24019
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300 endif
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pascal@20477
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301
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pascal@20477
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302 endp _boot_kernel
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pascal@20477
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303
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pascal@19515
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304 ends _TEXT
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pascal@19515
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305
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pascal@19515
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306 end
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pascal@19515
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307
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pascal@19515
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308 ;###### END OF FILE ############################################
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