Changeset 480 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Tools

Timestamp:

Oct 27, 2012, 11:26:11 AM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• XT-CF DMA transfers should now work.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Tools/Prepare.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Tools/Prepare.asm

@@ -95 +95 @@
 Prepare_BufferToESSIforOldInt13hTransfer:
     mov     si, [bp+IDEPACK.intpack+INTPACK.bx] ; Load offset
-
-%ifdef MODULE_8BIT_IDE
-    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
-    jne     SHORT .NormalizeForSmallestPossibleOffset
-
-    ; DMA transfers do not need to normalize pointer
-    ; (it will be converted to physical address in IdeDmaTransfer.asm)
-    mov     es, [bp+IDEPACK.intpack+INTPACK.es]
-    jmp     SHORT Prepare_ByValidatingSectorsInALforOldInt13h
-%endif ; MODULE_8BIT_IDE
-
-    ; Normalize segment for 16b pages
-.NormalizeForSmallestPossibleOffset:
-    mov     bx, si
-    eSHR_IM bx, 4                               ; Divide offset by 16
-    add     bx, [bp+IDEPACK.intpack+INTPACK.es]
-    mov     es, bx                              ; Segment normalized
-    and     si, BYTE 0Fh                        ; Offset normalized
+    mov     es, [bp+IDEPACK.intpack+INTPACK.es] ; Load segment
     ; Fall to Prepare_ByValidatingSectorsInALforOldInt13h
-
 
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