source: xtideuniversalbios/trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrintCfg.asm@ 222

; Project name  :   XTIDE Universal BIOS
; Description   :   Functions for printing drive configuration
;                   information on Boot Menu.

; Section containing code
SECTION .text

;--------------------------------------------------------------------
; Prints Hard Disk configuration for drive handled by our BIOS.
; Cursor is set to configuration header string position.
;
; BootMenuPrintCfg_ForOurDrive
;   Parameters:
;       DS:     Segment to DPT
;       Stack:  Offset to DPT
;   Returns:
;       Nothing
;   Corrupts registers:
;       AX, BX, CX, DX, SI, DI
;--------------------------------------------------------------------
ALIGN JUMP_ALIGN
BootMenuPrintCfg_ForOurDrive:
    mov     si, g_szCfgHeader
    call    BootMenuPrint_NullTerminatedStringFromCSSIandSetCF
    pop     di
    eMOVZX  ax, BYTE [di+DPT.bIdevarsOffset]
    xchg    si, ax                      ; CS:SI now points to IDEVARS
    ; Fall to .PushAndFormatCfgString

;--------------------------------------------------------------------
; PushAndFormatCfgString
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing
;   Corrupts registers:
;       AX, DX, SI, DI
;--------------------------------------------------------------------
.PushAndFormatCfgString:
    push    bp
    mov     bp, sp
    ; Fall to first push below

;--------------------------------------------------------------------
; PushAddressingMode
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing (jumps to next push below)
;   Corrupts registers:
;       AX, BX
;--------------------------------------------------------------------
.PushAddressingMode:
    AccessDPT_GetUnshiftedAddressModeToALZF
    ;; 
    ;; This multiply both shifts the addressing mode bits down to low order bits, and 
    ;; at the same time multiplies by the size of the string displacement.  The result is in AH,
    ;; with AL clear, and so we exchange AL and AH after the multiply for the final result.
    ;; 
    mov     bl,(1<<(8-ADDRESSING_MODE_FIELD_POSITION)) * g_szAddressingModes_Displacement
    mul     bl
    xchg    al,ah
    add     ax,g_szAddressingModes
    push    ax
        
;--------------------------------------------------------------------
; PushBlockMode
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing (falls to next push below)
;   Corrupts registers:
;       AX
;--------------------------------------------------------------------
.PushBlockMode:
    mov     ax, 1
    test    BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED
    jz      SHORT .PushBlockSizeFromAX
    mov     al, [di+DPT_ATA.bSetBlock]
.PushBlockSizeFromAX:
    push    ax

;--------------------------------------------------------------------
; PushBusType
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing (jumps to next push below)
;   Corrupts registers:
;       AX, DX
;--------------------------------------------------------------------
.PushBusType:
    mov     al,g_szBusTypeValues_Displacement
    mul     BYTE [cs:si+IDEVARS.bDevice]
        
    shr     ax,1            ; divide by 2 since IDEVARS.bDevice is multiplied by 2
        
    add     ax,g_szBusTypeValues
    push    ax  
                
;--------------------------------------------------------------------
; PushIRQ
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing (falls to next push below)
;   Corrupts registers:
;       AX, DX
;--------------------------------------------------------------------
.PushIRQ:
    eMOVZX  ax, BYTE [cs:si+IDEVARS.bIRQ]
    push    ax

;--------------------------------------------------------------------
; PushResetStatus
;   Parameters:
;       DS:DI:  Ptr to DPT
;       CS:SI:  Ptr to IDEVARS
;   Returns:
;       Nothing (falls to next push below)
;   Corrupts registers:
;       AX
;--------------------------------------------------------------------
.PushResetStatus:
    mov     al, [di+DPT.bFlagsHigh]
    and     ax, MASKH_DPT_RESET
    push    ax

;--------------------------------------------------------------------
; PrintValuesFromStack
;   Parameters:
;       Stack:  All formatting parameters
;   Returns:
;       Nothing
;   Corrupts registers:
;       AX, SI, DI
;--------------------------------------------------------------------
.PrintValuesFromStack:
    mov     si, g_szCfgFormat
    jmp     BootPrint_BootMenuPrint_FormatCSSIfromParamsInSSBP_Relay