Changeset 365 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH24h_HSetBlocks.asm

Timestamp:

Mar 27, 2012, 5:01:57 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Errors from AH=9h are stored to DPTs again.
• XT build fits in 8k again.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH24h_HSetBlocks.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH24h_HSetBlocks.asm

@@ -40 +40 @@
 ;       CF:     0 if successful, 1 if error
 ;   Corrupts registers:
-;       AL, BX, CX, DX
+;       AL, CX, DX
 ;--------------------------------------------------------------------
 AH24h_SetBlockSize:
+    push    bx
+
     push    ax
-    xchg    dx, ax          ; DL = Block size (Sector Count Register)
-    or      BYTE [di+DPT.bFlagsHigh], FLGH_DPT_BLOCK_MODE_SUPPORTED ; Assume success
+    xchg    dx, ax      ; DL = Block size (Sector Count Register)
     mov     al, COMMAND_SET_MULTIPLE_MODE
     mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY)
     call    Idepack_StoreNonExtParametersAndIssueCommandFromAL
     pop     bx
-    jnc     .StoreBlockSize
-    mov     bl, 1   ; Disable block mode
-    and     BYTE [di+DPT.bFlagsHigh], ~FLGH_DPT_BLOCK_MODE_SUPPORTED
-.StoreBlockSize:    ; Store new block size to DPT and return
-    mov     [di+DPT_ATA.bSetBlock], bl
+    jnc     SHORT .StoreBlockSize
+    mov     bl, 1       ; Block size 1 will always work
+.StoreBlockSize:        ; Store new block size to DPT and return
+    mov     [di+DPT_ATA.bBlockSize], bl
+
+    pop     bx
     ret