Changeset 150 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AHCh_HSeek.asm

Timestamp:

Apr 29, 2011, 7:04:13 PM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• Redesigned Disk Parameter Tables.
• Code generalizations for supporting non-IDE devices in the future.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AHCh_HSeek.asm (modified) (4 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AHCh_HSeek.asm

@@ -13 +13 @@
 ;       DL:     Translated Drive number
 ;       DS:DI:  Ptr to DPT (in RAMVARS segment)
-;       SS:BP:  Ptr to INTPACK
-;   Parameters on INTPACK in SS:BP:
+;       SS:BP:  Ptr to IDEREGS_AND_INTPACK
+;   Parameters on INTPACK:
 ;       CH:     Cylinder number, bits 7...0
 ;       CL:     Bits 7...6: Cylinder number bits 9 and 8
 ;               Bits 5...0: Starting sector number (1...63)
 ;       DH:     Starting head number (0...255)
-;   Returns with INTPACK in SS:BP:
+;   Returns with INTPACK:
 ;       AH:     BIOS Error code
 ;       CF:     0 if succesfull, 1 if error
@@ -33 +33 @@
 %endif
 
-
 ;--------------------------------------------------------------------
 ; AHCh_SeekToCylinder
@@ -42 +41 @@
 ;       DH:     Starting head number (0...255)
 ;       DS:DI:  Ptr to DPT (in RAMVARS segment)
+;       SS:BP:  Ptr to IDEREGS_AND_INTPACK
 ;   Returns:
 ;       AH:     BIOS Error code
@@ -49 +49 @@
 ;--------------------------------------------------------------------
 AHCh_SeekToCylinder:
-    mov     ax, HCMD_SEEK<<8            ; Load cmd to AH, AL=zero sector cnt
-    call    HCommand_OutputCountAndLCHSandCommand
-    jc      SHORT .ReturnWithErrorCodeInAH
-    mov     bx, di                      ; DS:BX now points to DPT
-    jmp     HStatus_WaitIrqOrRdy        ; Wait for IRQ or RDY
-.ReturnWithErrorCodeInAH:
-    ret
+    mov     ah, COMMAND_SEEK
+    mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_DRDY)
+    jmp     Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH