Changeset 160 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDPT.asm

Timestamp:

May 4, 2011, 5:49:22 PM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• Support for XTIDE mod now works.

File:

• trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDPT.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeDPT.asm

@@ -10 +10 @@
 ;       DS:DI:  Ptr to Disk Parameter Table
 ;       ES:SI:  Ptr to 512-byte ATA information read from the drive
+;       CS:BP:  Ptr to IDEVARS for the controller
 ;   Returns:
 ;       Nothing
@@ -23 +24 @@
 ;       DS:DI:  Ptr to Disk Parameter Table
 ;       ES:SI:  Ptr to 512-byte ATA information read from the drive
+;       CS:BP:  Ptr to IDEVARS for the controller
 ;   Returns:
 ;       Nothing
@@ -32 +34 @@
     mov     ah, [es:si+ATA1.bBlckSize]      ; Max block size in sectors
     mov     [di+DPT_ATA.wSetAndMaxBlock], ax
-    ; Fall to .EndDPT
+    ; Fall to IdeDPT_StoreReversedAddressLinesFlagIfNecessary
 
+;--------------------------------------------------------------------
+; IdeDPT_StoreReversedAddressLinesFlagIfNecessary
+;   Parameters:
+;       DS:DI:  Ptr to Disk Parameter Table
+;       CS:BP:  Ptr to IDEVARS for the controller
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       Nothing
+;--------------------------------------------------------------------
+IdeDPT_StoreReversedAddressLinesFlagIfNecessary:
+    cmp     BYTE [cs:bp+IDEVARS.bDevice], DEVICE_XTIDE_WITH_REVERSED_A3_AND_A0
+    jne     SHORT .EndDPT
+    or      BYTE [di+DPT.bFlagsHigh], FLGH_DPT_REVERSED_A0_AND_A3
 
 .EndDPT: