Changeset 221 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH42h_ExtendedReadSectors.asm

Timestamp:

Jan 25, 2012, 2:36:47 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• AH=0Ch (Seek) should work properly again.
• More than 127 sectors are no longer allowed for EBIOS functions.
• Changed location for BOOTNFO structs.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH42h_ExtendedReadSectors.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/EBIOS/AH42h_ExtendedReadSectors.asm

@@ -24 +24 @@
 ALIGN JUMP_ALIGN
 AH42h_HandlerForExtendedReadSectors:
-    call    AH42h_LoadDapToESSIandVerifyForTransfer
-    call    CommandLookup_GetEbiosIndexToBX
+    call    Prepare_ByLoadingDapToESSIandVerifyingForTransfer
     mov     ah, [cs:bx+g_rgbReadCommandLookup]
     mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRQ)
@@ -35 +34 @@
     jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
 %endif
-
-
-;--------------------------------------------------------------------
-; AH42h_LoadDapToESSIandVerifyForTransfer
-;   Parameters:
-;       SI:     Same as in INTPACK
-;       SS:BP:  Ptr to IDEPACK
-;   Parameters on INTPACK:
-;       DS:SI:  Ptr to Disk Address Packet
-;   Returns:
-;       ES:SI:  Ptr to Disk Address Packet (DAP)
-;       Exits from INT 13h if invalid DAP
-;   Corrupts registers:
-;       Nothing
-;--------------------------------------------------------------------
-ALIGN JUMP_ALIGN
-AH42h_LoadDapToESSIandVerifyForTransfer:
-    mov     es, [bp+IDEPACK.intpack+INTPACK.ds] ; ES:SI to point Disk Address Packet
-    cmp     BYTE [es:si+DAP.bSize], MINIMUM_DAP_SIZE
-    jb      SHORT AH42h_ReturnWithInvalidFunctionError
-    cmp     WORD [es:si+DAP.bSectorCount], BYTE 0
-    je      SHORT AH42h_ReturnWithInvalidFunctionError
-    ret
-AH42h_ReturnWithInvalidFunctionError:
-    mov     ah, RET_HD_INVALID
-    jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH