[88] | 1 | ; Project name : XTIDE Universal BIOS |
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[3] | 2 | ; Description : Functions for printing drive detection strings. |
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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 | ; Prints BIOS name and segment address where it is found. |
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| 9 | ; |
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| 10 | ; DetectPrint_RomFoundAtSegment |
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| 11 | ; Parameters: |
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| 12 | ; Nothing |
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| 13 | ; Returns: |
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| 14 | ; Nothing |
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| 15 | ; Corrupts registers: |
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[120] | 16 | ; AX, SI, DI |
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[3] | 17 | ;-------------------------------------------------------------------- |
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| 18 | DetectPrint_RomFoundAtSegment: |
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[88] | 19 | push bp |
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[97] | 20 | mov bp, sp |
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[3] | 21 | mov si, g_szRomAt |
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[88] | 22 | ePUSH_T ax, ROMVARS.szTitle ; Bios title string |
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| 23 | push cs ; BIOS segment |
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[242] | 24 | |
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| 25 | DetectPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay: |
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[88] | 26 | jmp BootMenuPrint_FormatCSSIfromParamsInSSBP |
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[3] | 27 | |
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| 28 | |
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| 29 | ;-------------------------------------------------------------------- |
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[97] | 30 | ; DetectPrint_StartDetectWithMasterOrSlaveStringInAXandIdeVarsInCSBP |
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[3] | 31 | ; Parameters: |
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[233] | 32 | ; CS:CX: Ptr to "Master" or "Slave" string |
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[3] | 33 | ; CS:BP: Ptr to IDEVARS |
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[242] | 34 | ; SI: Ptr to template string |
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[3] | 35 | ; Returns: |
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| 36 | ; Nothing |
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| 37 | ; Corrupts registers: |
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[196] | 38 | ; AX, SI, DI, CX |
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[3] | 39 | ;-------------------------------------------------------------------- |
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[97] | 40 | DetectPrint_StartDetectWithMasterOrSlaveStringInAXandIdeVarsInCSBP: |
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[233] | 41 | |
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| 42 | mov ax, [cs:bp+IDEVARS.wPort] ; for IDE: AX=port address, DH=.bDevice |
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| 43 | mov dx, [cs:bp+IDEVARS.bDevice-1] ; for Serial: AL=port address>>2, AH=baud rate |
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| 44 | ; DL=COM number character, DH=.bDevice |
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| 45 | |
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[242] | 46 | push bp ; setup stack for call to |
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[233] | 47 | mov bp, sp ; BootMenuPrint_FormatCSSIfromParamsInSSBP |
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| 48 | |
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| 49 | push cx ; Push "Master" or "Slave" |
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[242] | 50 | |
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[233] | 51 | mov cl, (g_szDetectPort-$$) & 0xff ; Setup print string for standard IDE |
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| 52 | ; Note that we modify only the low order bits of CX a lot here, |
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| 53 | ; saving code space rather than reloading CX completely. |
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| 54 | ; This optimization requires that all the g_szDetect* strings are |
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| 55 | ; on the same 256 byte page, which is checked in strings.asm. |
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[3] | 56 | |
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[244] | 57 | cmp dh, DEVICE_SERIAL_PORT ; Check if this is a serial device |
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[233] | 58 | |
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[244] | 59 | jnz .pushAndPrint ; CX = string to print, AX = port address, DX won't be used |
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[233] | 60 | |
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| 61 | mov cl, (g_szDetectCOM-$$) & 0xff ; Setup print string for COM ports |
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| 62 | push cx ; And push now. We use the fact that format strings can contain |
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| 63 | ; themselves format strings. |
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| 64 | |
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| 65 | push dx ; Push COM number character |
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[242] | 66 | ; If the string is going to be "Auto", we will push a NULL (zero) |
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| 67 | ; here for the COM port number, which will be eaten by the |
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| 68 | ; print routine (DisplayPrint_CharacterFromAL), resulting in |
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[235] | 69 | ; just "COM" being printed without a character after it. |
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[242] | 70 | |
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[233] | 71 | mov cl, (g_szDetectCOMAuto-$$) & 0xff ; Setup secondary print string for "Auto" |
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[242] | 72 | |
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[244] | 73 | test dl, dl ; Check if serial port "Auto" |
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[233] | 74 | jz .pushAndPrint ; CX = string to print, AX and DX won't be used |
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[242] | 75 | |
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[233] | 76 | mov cl, (g_szDetectCOMLarge-$$) & 0xff ; Setup secondary print string for "COMn/xx.yK" |
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[3] | 77 | |
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[233] | 78 | mov al,ah ; baud rate divisor to AL |
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| 79 | cbw ; clear AH, AL will always be less than 128 |
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| 80 | xchg si,ax ; move AX to SI for divide |
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[242] | 81 | mov ax,1152 ; baud rate to display is 115200/divisor, the "00" is handled |
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[233] | 82 | ; in the print strings |
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[242] | 83 | cwd ; clear top 16-bits of dividend |
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[233] | 84 | div si ; and divide... Now AX = baud rate/100, DX = 0 (always a clean divide) |
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[242] | 85 | |
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[233] | 86 | mov si,10 ; Now separate the whole portion from the fractional for "K" display |
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| 87 | div si ; and divide... Now AX = baud rate/1000, DX = low order digit |
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[242] | 88 | |
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| 89 | cmp ax,si ; < 10: "2400", "9600", etc.; >= 10: "19.2K", "38.4K", etc. |
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[233] | 90 | jae .pushAndPrint |
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[196] | 91 | |
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[233] | 92 | mov cl, (g_szDetectCOMSmall-$$) & 0xff ; Setup secondary print string for "COMn/XXy00" |
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[242] | 93 | |
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| 94 | .pushAndPrint: |
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[233] | 95 | push cx ; Push print string |
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| 96 | push ax ; Push high order digits, or port address, or N/A |
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| 97 | push dx ; Push low order digit, or N/A |
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| 98 | |
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| 99 | mov si, g_szDetectOuter ; Finally load SI with wrapper string "IDE %s at %s: " |
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| 100 | |
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[242] | 101 | jmp short DetectPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay |
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[196] | 102 | |
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| 103 | |
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[3] | 104 | ;-------------------------------------------------------------------- |
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[98] | 105 | ; DetectPrint_DriveNameFromBootnfoInESBX |
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[3] | 106 | ; Parameters: |
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| 107 | ; ES:BX: Ptr to BOOTNFO (if drive found) |
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| 108 | ; Returns: |
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| 109 | ; Nothing |
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| 110 | ; Corrupts registers: |
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[88] | 111 | ; AX, SI |
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[3] | 112 | ;-------------------------------------------------------------------- |
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[98] | 113 | DetectPrint_DriveNameFromBootnfoInESBX: |
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[88] | 114 | push di |
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| 115 | push bx |
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| 116 | |
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[3] | 117 | lea si, [bx+BOOTNFO.szDrvName] |
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[88] | 118 | mov bx, es |
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| 119 | CALL_DISPLAY_LIBRARY PrintNullTerminatedStringFromBXSI |
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| 120 | CALL_DISPLAY_LIBRARY PrintNewlineCharacters |
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| 121 | |
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| 122 | pop bx |
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| 123 | pop di |
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| 124 | ret |
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| 125 | |
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