1 | ; Project name : XTIDE Universal BIOS |
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2 | ; Description : Macros for memory mapped ATA controllers. |
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3 | |
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4 | %ifndef MEM_MAPPED_IDE_INC |
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5 | %define MEM_MAPPED_IDE_INC |
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6 | |
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7 | JRIDE_SECTOR_ACCESS_WINDOW_OFFSET EQU 3C00h ; 512 byte IDE Sector Access Window |
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8 | JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET EQU 3E00h ; 8 byte CS0 IDE Register Window |
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9 | JRIDE_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET EQU 3E08h ; 8 byte CS1 IDE Register Window |
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10 | JRIDE_SECTOR_ACCESS_WINDOW_SIZE EQU 512 ; 512 bytes |
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11 | |
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12 | |
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13 | |
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14 | ;-------------------------------------------------------------------- |
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15 | ; OUTPUT_AL_TO_IDE_REGISTER_IN_DL |
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16 | ; JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER_IN_DL |
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17 | ; OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER_IN_DL |
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18 | ; Parameters: |
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19 | ; AL: Byte to output |
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20 | ; %1: IDE Register (OUTPUT_AL_TO_IDE_REGISTER) |
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21 | ; IDE Control Block Register (OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER) |
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22 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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23 | ; Returns: |
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24 | ; Nothing |
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25 | ; Corrupts registers: |
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26 | ; BX, DX |
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27 | ;-------------------------------------------------------------------- |
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28 | %unmacro OUTPUT_AL_TO_IDE_REGISTER 1 |
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29 | %macro OUTPUT_AL_TO_IDE_REGISTER 1 |
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30 | mov [cs:JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET+%1], al |
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31 | %endmacro |
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32 | |
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33 | %unmacro JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER 1 |
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34 | %macro JUMP_TO_OUTPUT_AL_TO_IDE_REGISTER 1 |
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35 | OUTPUT_AL_TO_IDE_REGISTER %1 |
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36 | ret |
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37 | %endmacro |
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38 | |
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39 | %unmacro OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER 1 |
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40 | %macro OUTPUT_AL_TO_IDE_CONTROL_BLOCK_REGISTER 1 |
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41 | mov [cs:JRIDE_CONTROL_BLOCK_REGISTER_WINDOW_OFFSET+%1], al |
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42 | %endmacro |
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43 | |
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44 | |
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45 | ;-------------------------------------------------------------------- |
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46 | ; INPUT_TO_AL_FROM_IDE_REGISTER |
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47 | ; JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER |
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48 | ; Parameters: |
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49 | ; %1: IDE Register |
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50 | ; DS:DI: Ptr to DPT (in RAMVARS segment) |
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51 | ; Returns: |
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52 | ; AL: Inputted byte |
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53 | ; Corrupts registers: |
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54 | ; BX, DX |
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55 | ;-------------------------------------------------------------------- |
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56 | %unmacro INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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57 | %macro INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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58 | mov al, [cs:JRIDE_COMMAND_BLOCK_REGISTER_WINDOW_OFFSET+%1] |
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59 | %endmacro |
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60 | |
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61 | %unmacro JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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62 | %macro JUMP_TO_INPUT_TO_AL_FROM_IDE_REGISTER 1 |
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63 | INPUT_TO_AL_FROM_IDE_REGISTER %1 |
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64 | ret |
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65 | %endmacro |
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66 | |
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67 | |
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68 | %endif ; MEM_MAPPED_IDE_INC |
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