Changeset 148 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH10h_HReady.asm

Timestamp:

Mar 19, 2011, 8:09:41 PM (13 years ago)

Author:

aitotat

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• INT 13h optimizations to save almost 100 bytes.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH10h_HReady.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH10h_HReady.asm

@@ -1 @@
-; File name     :   AH10h_HReady.asm
-; Project name  :   IDE BIOS
-; Created date  :   9.12.2007
-; Last update   :   12.4.2010
-; Author        :   Tomi Tilli
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   Int 13h function AH=10h, Check Drive Ready.
 
@@ -14 +10 @@
 ; AH10h_HandlerForCheckDriveReady
 ;   Parameters:
-;       AH:     Bios function 10h
-;       DL:     Drive number (8xh)
-;   Parameters loaded by Int13h_Jump:
-;       DS:     RAMVARS segment
-;   Returns:
+;       DL:     Translated Drive number
+;       DS:DI:  Ptr to DPT (in RAMVARS segment)
+;       SS:BP:  Ptr to INTPACK
+;   Returns with INTPACK in SS:BP:
 ;       AH:     Int 13h return status
 ;       CF:     0 if succesfull, 1 if error
-;       IF:     1
-;   Corrupts registers:
-;       Flags
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
 AH10h_HandlerForCheckDriveReady:
-    ; Save registers
-    push    dx
-    push    cx
-    push    bx
-    push    ax
-
-    ; Wait until drive is ready
-    call    FindDPT_ForDriveNumber      ; DS:DI now points to DPT
     call    HStatus_WaitRdyDefTime
-    jmp     Int13h_PopXRegsAndReturn
+    xor     ah, ah
+    jmp     Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH