Changeset 227 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm

Timestamp:

Jan 29, 2012, 1:33:44 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• EBIOS functions now work in lite mode.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH48h_GetExtendedDriveParameters.asm

@@ -21 +21 @@
 ;       CF:     0 if succesfull, 1 if error
 ;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
 AH48h_HandlerForGetExtendedDriveParameters:
-    ; Get our buffer to ES:SI
-    push    di
-    call    FindDPT_ForNewDriveToDSDI
-    lea     si, [di+LARGEST_DPT_SIZE]   ; IdeCommand.asm required fake DPT
-    pop     di
-    push    ds
-    pop     es
+    call    AccessDPT_GetLbaSectorCountToBXDXAX
 
-    ; Get Drive ID and total sector count from it
-    call    AH25h_GetDriveInformationToBufferInESSI
-    jc      SHORT .ReturnWithError
-
-    ; Point DS:DI to Destination buffer
-    mov     di, [bp+IDEPACK.intpack+INTPACK.si]
+    ; Point DS:SI to Extended Drive Information Table to fill
     mov     ds, [bp+IDEPACK.intpack+INTPACK.ds]
-    mov     ax, MINIMUM_EDRIVEINFO_SIZE
-    cmp     [di+EDRIVE_INFO.wSize], ax
+    mov     cx, MINIMUM_EDRIVEINFO_SIZE
+    cmp     [si+EDRIVE_INFO.wSize], cx
     jb      SHORT Prepare_ReturnFromInt13hWithInvalidFunctionError
     je      SHORT .SkipEddConfigurationParameters
 
     ; We do not support EDD Configuration Parameters so set to FFFF:FFFFh
-    mov     ax, -1      ; AX = FFFFh
-    mov     [di+EDRIVE_INFO.fpEDDparams], ax
-    mov     [di+EDRIVE_INFO.fpEDDparams+2], ax
-    mov     ax, EDRIVE_INFO_size
+    mov     cx, -1      ; FFFFh
+    mov     [si+EDRIVE_INFO.fpEDDparams], cx
+    mov     [si+EDRIVE_INFO.fpEDDparams+2], cx
+    mov     cx, EDRIVE_INFO_size
 
-    ; Fill Extended Drive Information Table in DS:DI
+    ; Fill Extended Drive Information Table in DS:SI
 .SkipEddConfigurationParameters:
-    mov     [di+EDRIVE_INFO.wSize], ax
-    mov     WORD [di+EDRIVE_INFO.wFlags], FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS | FLG_CHS_INFORMATION_IS_VALID
+    mov     [si+EDRIVE_INFO.wSize], cx
+    mov     WORD [si+EDRIVE_INFO.wFlags], FLG_DMA_BOUNDARY_ERRORS_HANDLED_BY_BIOS
 
-    call    AtaID_GetPCHStoAXBLBHfromAtaInfoInESSI
-    xor     cx, cx
-    mov     [di+EDRIVE_INFO.dwCylinders], ax
-    mov     [di+EDRIVE_INFO.dwCylinders+2], cx
-    eMOVZX  ax, bl
-    mov     [di+EDRIVE_INFO.dwHeads], ax
-    mov     [di+EDRIVE_INFO.dwHeads+2], cx
-    mov     al, bh
-    mov     [di+EDRIVE_INFO.dwSectorsPerTrack], ax
-    mov     [di+EDRIVE_INFO.dwSectorsPerTrack+2], cx
-
-    call    AtaID_GetTotalSectorCountToBXDXAXfromAtaInfoInESSI
     mov     [di+EDRIVE_INFO.qwTotalSectors], ax
+    xor     ax, ax                                  ; Return with success
     mov     [di+EDRIVE_INFO.qwTotalSectors+2], dx
     mov     [di+EDRIVE_INFO.qwTotalSectors+4], bx
-    mov     [di+EDRIVE_INFO.qwTotalSectors+6], cx
-
+    mov     [di+EDRIVE_INFO.qwTotalSectors+6], ax
     mov     WORD [di+EDRIVE_INFO.wSectorSize], 512
 
-    ; Return with success
-    xor     ah, ah
 .ReturnWithError:
     jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH