Changeset 294 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

Timestamp:

Mar 4, 2012, 1:35:10 AM (13 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Commit 2/2 (BIOS):

• Fixed a bug in AH1h_HStatus.asm.
• Minor optimizations.
• Fixed spelling and did some cleaning.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm (modified) (5 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h.asm

@@ -26 +26 @@
 
     call    RamVars_GetSegmentToDS
-        
+
     call    DriveXlate_ToOrBack
     mov     [RAMVARS.xlateVars+XLATEVARS.bXlatedDrv], dl
-        
+
     call    FindDPT_ForDriveNumberInDL              ; DS:DI points to our DPT, or NULL if not our drive
     jnc     SHORT .OurFunction                      ; DPT found, this is one of our drives, and thus our function
 
-    cmp     ah, 0
-    jz      short .OurFunction                      ; we handle all function 0h requests (resets)
+    test    ah, ah
+    jz      SHORT .OurFunction                      ; we handle all function 0h requests (resets)
     cmp     ah, 8
-    jnz     SHORT Int13h_DirectCallToAnotherBios    ; non-8h function, handled by foreign bios
+    jne     SHORT Int13h_DirectCallToAnotherBios    ; non-8h function, handled by foreign bios
 
 %ifndef MODULE_SERIAL_FLOPPY
-; With floppy support, we handle all traffic for function 08h, as we need to wrap both hard disk and 
-; floppy drive counts.  Without floppy support, we handle only hard disk traffic for function 08h, 
+; With floppy support, we handle all traffic for function 08h, as we need to wrap both hard disk and
+; floppy drive counts.  Without floppy support, we handle only hard disk traffic for function 08h,
 ; and thus need the check below.
 ;
-    test    dl, dl                              
+    test    dl, dl
     jns     SHORT Int13h_DirectCallToAnotherBios
-%endif      
-                
-.OurFunction:   
+%endif
+
+.OurFunction:
     ; Jump to correct BIOS function
     eMOVZX  bx, ah
@@ -141 +141 @@
     test    dl, dl
     js      short Int13h_UnsupportedFunction
-    mov     ah, 0
+    xor     ah, ah
     jmp     short Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH
 %endif
@@ -172 +172 @@
 %ifdef MODULE_SERIAL_FLOPPY
     mov     al, [bp+IDEPACK.intpack+INTPACK.dl]
-Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH_ALHasDriveNumber:   
+Int13h_ReturnFromHandlerAfterStoringErrorCodeFromAH_ALHasDriveNumber:
     call    Int13h_SetErrorCodeToBdaAndToIntpackInSSBPfromAH_ALHasDriveNumber
 %else
@@ -191 +191 @@
 ;   Returns:
 ;       Depends on function
-;       NOTE: ES:DI needs to be returned from the previous interrupt 
+;       NOTE: ES:DI needs to be returned from the previous interrupt
 ;             handler, for floppy DPT in function 08h
 ;   Corrupts registers:
@@ -251 +251 @@
 .HardDisk:
     LOAD_BDA_SEGMENT_TO ds, di
-    mov     [bx], ah        
+    mov     [bx], ah
 %else
 Int13h_SetErrorCodeToBdaAndToIntpackInSSBPfromAH:
     ; Store error code to BDA
-    LOAD_BDA_SEGMENT_TO ds, di      
+    LOAD_BDA_SEGMENT_TO ds, di
     mov     [BDA.bHDLastSt], ah
 %endif