1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : Sets IDE Device specific parameters to DPT. |
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3 | |
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4 | ; Section containing code |
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5 | SECTION .text |
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6 | |
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7 | ;-------------------------------------------------------------------- |
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8 | ; IdeDPT_Finalize |
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9 | ; Parameters: |
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10 | ; DS:DI: Ptr to Disk Parameter Table |
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11 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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12 | ; CS:BP: Ptr to IDEVARS for the controller |
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13 | ; Returns: |
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14 | ; Nothing |
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15 | ; Corrupts registers: |
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16 | ; AX, BX, CX, DX |
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17 | ;-------------------------------------------------------------------- |
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18 | IdeDPT_Finalize: |
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19 | ; Fall to .StoreBlockMode |
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20 | |
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21 | ;-------------------------------------------------------------------- |
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22 | ; .StoreBlockMode |
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23 | ; Parameters: |
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24 | ; DS:DI: Ptr to Disk Parameter Table |
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25 | ; ES:SI: Ptr to 512-byte ATA information read from the drive |
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26 | ; CS:BP: Ptr to IDEVARS for the controller |
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27 | ; Returns: |
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28 | ; Nothing |
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29 | ; Corrupts registers: |
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30 | ; Nothing |
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31 | ;-------------------------------------------------------------------- |
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32 | .StoreBlockMode: |
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33 | mov al, 1 |
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34 | mov ah, [es:si+ATA1.bBlckSize] ; Max block size in sectors |
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35 | mov [di+DPT_ATA.wSetAndMaxBlock], ax |
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36 | ; Fall to IdeDPT_StoreReversedAddressLinesFlagIfNecessary |
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37 | |
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38 | ;-------------------------------------------------------------------- |
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39 | ; IdeDPT_StoreReversedAddressLinesFlagIfNecessary |
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40 | ; Parameters: |
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41 | ; DS:DI: Ptr to Disk Parameter Table |
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42 | ; CS:BP: Ptr to IDEVARS for the controller |
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43 | ; Returns: |
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44 | ; Nothing |
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45 | ; Corrupts registers: |
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46 | ; Nothing |
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47 | ;-------------------------------------------------------------------- |
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48 | IdeDPT_StoreReversedAddressLinesFlagIfNecessary: |
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49 | cmp BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0 |
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50 | jne SHORT .EndDPT |
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51 | or BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3 |
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52 | |
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53 | .EndDPT: |
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54 | ret |
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