1 | ; Project name : BIOS Drive Information Tool |
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2 | ; Description : Functions to print information read from BIOS. |
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3 | |
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4 | |
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5 | ; Section containing code |
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6 | SECTION .text |
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7 | |
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8 | ;-------------------------------------------------------------------- |
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9 | ; Use DOS standard output so strings can be redirected to a file. |
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10 | ; |
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11 | ; Print_DosCharOut |
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12 | ; Parameters: |
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13 | ; AL: Character to output |
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14 | ; DS: BDA segment (zero) |
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15 | ; ES:DI: Ptr to video memory where to output |
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16 | ; Returns: |
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17 | ; DI: Incremented for next character |
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18 | ; Corrupts registers: |
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19 | ; AX, DX |
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20 | ;-------------------------------------------------------------------- |
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21 | ALIGN JUMP_ALIGN |
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22 | Print_DosCharOut: |
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23 | xchg dx, ax |
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24 | mov ah, 02h ; DOS 1+ - WRITE CHARACTER TO STANDARD OUTPUT |
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25 | int 21h ; Call DOS |
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26 | ret |
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27 | |
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28 | |
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29 | ;--------------------------------------------------------------------- |
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30 | ; Print_ErrorMessageFromAHifError |
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31 | ; Parameters: |
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32 | ; AH: BIOS error code |
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33 | ; CF: Set if error, cleared otherwise |
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34 | ; Returns: |
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35 | ; Nothing |
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36 | ; Corrupts registers: |
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37 | ; AX, BP, SI, DI (CF remains unchanged) |
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38 | ;-------------------------------------------------------------------- |
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39 | ALIGN JUMP_ALIGN |
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40 | Print_ErrorMessageFromAHifError: |
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41 | jnc SHORT .NoErrors |
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42 | eMOVZX ax, ah |
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43 | mov si, g_szBiosError |
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44 | call Print_BiosFunctionNumberFromAXusingFormatStringInSI |
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45 | stc ; Keep the CF set |
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46 | ALIGN JUMP_ALIGN |
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47 | .NoErrors: |
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48 | ret |
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49 | |
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50 | |
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51 | ;--------------------------------------------------------------------- |
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52 | ; Print_DriveNumberFromDLusingFormatStringInSI |
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53 | ; Print_BiosFunctionNumberFromAXusingFormatStringInSI |
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54 | ; Print_SectorSizeFromAXusingFormatStringInSI |
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55 | ; Parameters: |
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56 | ; DL: Drive Number |
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57 | ; AX: Function number |
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58 | ; Returns: |
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59 | ; Nothing |
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60 | ; Corrupts registers: |
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61 | ; AX, BP, DI |
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62 | ;-------------------------------------------------------------------- |
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63 | ALIGN JUMP_ALIGN |
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64 | Print_DriveNumberFromDLusingFormatStringInSI: |
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65 | eMOVZX ax, dl |
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66 | Print_BiosFunctionNumberFromAXusingFormatStringInSI: |
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67 | Print_SectorSizeFromAXusingFormatStringInSI: |
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68 | mov bp, sp |
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69 | push ax |
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70 | jmp SHORT JumpToFormatNullTerminatedStringFromSI |
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71 | |
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72 | |
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73 | ;--------------------------------------------------------------------- |
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74 | ; Print_CHSfromCXDXAX |
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75 | ; Parameters: |
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76 | ; CX: Number of cylinders (1...16383) |
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77 | ; DX: Number of heads (1...255) |
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78 | ; AX: Sectors per track (1...63) |
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79 | ; Returns: |
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80 | ; Nothing |
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81 | ; Corrupts registers: |
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82 | ; AX, BP, DI |
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83 | ;-------------------------------------------------------------------- |
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84 | ALIGN JUMP_ALIGN |
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85 | Print_CHSfromCXDXAX: |
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86 | push si |
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87 | |
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88 | mov bp, sp |
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89 | push cx |
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90 | push dx |
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91 | push ax |
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92 | mov si, g_szFormatCHS |
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93 | CALL_DISPLAY_LIBRARY FormatNullTerminatedStringFromCSSI |
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94 | |
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95 | pop si |
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96 | ret |
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97 | |
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98 | |
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99 | ;--------------------------------------------------------------------- |
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100 | ; Print_NameFromAtaInfoInBX |
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101 | ; Parameters: |
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102 | ; DS:BX: Ptr to ATA information |
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103 | ; Returns: |
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104 | ; Nothing |
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105 | ; Corrupts registers: |
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106 | ; AX, CX, BP, SI, DI |
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107 | ;-------------------------------------------------------------------- |
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108 | ALIGN JUMP_ALIGN |
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109 | Print_NameFromAtaInfoInBX: |
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110 | cld |
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111 | lea si, [bx+ATA1.strModel] |
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112 | mov di, si |
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113 | mov cx, A1_MODEL_NUMBER_LENGTH/2 |
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114 | ALIGN JUMP_ALIGN |
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115 | .ReverseNextWord: |
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116 | lodsw |
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117 | xchg al, ah |
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118 | stosw |
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119 | loop .ReverseNextWord |
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120 | dec di |
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121 | xor ax, ax |
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122 | stosb ; Terminate with NULL |
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123 | |
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124 | mov bp, sp |
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125 | lea si, [bx+ATA1.strModel] |
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126 | push si |
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127 | mov si, g_szFormatDrvName |
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128 | jmp SHORT JumpToFormatNullTerminatedStringFromSI |
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129 | |
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130 | |
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131 | ;--------------------------------------------------------------------- |
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132 | ; Print_TotalSectorsFromBXDXAX |
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133 | ; Parameters: |
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134 | ; BX:DX:AX: Total number of sectors |
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135 | ; Returns: |
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136 | ; Nothing |
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137 | ; Corrupts registers: |
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138 | ; AX, BX, BP, DI |
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139 | ;-------------------------------------------------------------------- |
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140 | ALIGN JUMP_ALIGN |
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141 | Print_TotalSectorsFromBXDXAX: |
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142 | ePUSH_T di, 0 |
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143 | push bx |
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144 | push dx |
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145 | push ax |
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146 | mov bp, sp |
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147 | mov bx, 10 |
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148 | CALL_DISPLAY_LIBRARY PrintQWordFromSSBPwithBaseInBX |
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149 | add sp, BYTE 8 |
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150 | |
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151 | CALL_DISPLAY_LIBRARY PrintNewlineCharacters |
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152 | ret |
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153 | |
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154 | |
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155 | ;--------------------------------------------------------------------- |
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156 | ; Print_EbiosVersionFromBXandExtensionsFromCX |
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157 | ; Parameters: |
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158 | ; BX: Version of extensions |
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159 | ; CX: Interface support bit map |
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160 | ; Returns: |
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161 | ; Nothing |
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162 | ; Corrupts registers: |
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163 | ; AX, BP, SI, DI |
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164 | ;-------------------------------------------------------------------- |
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165 | ALIGN JUMP_ALIGN |
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166 | Print_EbiosVersionFromBXandExtensionsFromCX: |
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167 | mov bp, sp |
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168 | push bx |
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169 | push cx |
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170 | mov si, g_szNewExtensions |
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171 | jmp SHORT JumpToFormatNullTerminatedStringFromSI |
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172 | |
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173 | |
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174 | ;--------------------------------------------------------------------- |
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175 | ; JumpToFormatNullTerminatedStringFromSI |
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176 | ; Parameters: |
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177 | ; BP: SP before pushing parameters |
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178 | ; CS:SI: Ptr to format string |
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179 | ; Returns: |
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180 | ; Pushed parameters are cleaned from stack |
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181 | ; Corrupts registers: |
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182 | ; AX, DI |
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183 | ;-------------------------------------------------------------------- |
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184 | ALIGN JUMP_ALIGN |
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185 | JumpToFormatNullTerminatedStringFromSI: |
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186 | CALL_DISPLAY_LIBRARY FormatNullTerminatedStringFromCSSI |
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187 | ret |
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188 | |
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189 | |
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190 | ;--------------------------------------------------------------------- |
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191 | ; Print_NullTerminatedStringFromSI |
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192 | ; Parameters: |
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193 | ; CS:SI: Ptr to string to display |
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194 | ; Returns: |
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195 | ; Nothing |
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196 | ; Corrupts registers: |
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197 | ; AX, DI |
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198 | ;-------------------------------------------------------------------- |
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199 | ALIGN JUMP_ALIGN |
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200 | Print_NullTerminatedStringFromSI: |
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201 | CALL_DISPLAY_LIBRARY PrintNullTerminatedStringFromCSSI |
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202 | ret |
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