Changeset 294 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH0h_HReset.asm

Timestamp:

Mar 4, 2012, 1:35:10 AM (12 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/AH0h_HReset.asm (modified) (7 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH0h_HReset.asm

@@ -19 +19 @@
 ;   Returns with INTPACK:
 ;       AH:     Int 13h return status (from drive requested in DL)
-;       CF:     0 if succesfull, 1 if error
+;       CF:     0 if successful, 1 if error
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
@@ -28 +28 @@
 %ifdef MODULE_SERIAL_FLOPPY
 ;
-; "Reset" emulatd serial floppy drives, if any.  There is nothing to actually do for this reset,
+; "Reset" emulated serial floppy drives, if any.  There is nothing to actually do for this reset,
 ; but record the proper error return code if one of these floppy drives is the drive requested.
 ;
@@ -39 +39 @@
 
     adc     dl, al                                      ; second drive (CF set) if present
-                                                        ; If no drive is present, this will result in ffh which 
+                                                        ; If no drive is present, this will result in ffh which
                                                         ; won't match a drive
     call    BackupErrorCodeFromTheRequestedDriveToBH
@@ -48 +48 @@
     test    bl, bl                                      ; If we were called with a floppy disk, then we are done,
     jns     SHORT .SkipHardDiskReset                    ; don't do hard disks.
-        
+
     call    ResetForeignHardDisks
 
-    ; Resetting our hard disks will modify dl and bl to be idevars offset based instead of drive number based, 
+    ; Resetting our hard disks will modify dl and bl to be idevars offset based instead of drive number based,
     ; such that this call must be the last in the list of reset routines called.
     ;
@@ -57 +57 @@
     ; and we need to override that value if we are xlate'd into 80h with one of our drives.
     ;
-    call    ResetHardDisksHandledByOurBIOS          
+    call    ResetHardDisksHandledByOurBIOS
 
 .SkipHardDiskReset:
@@ -139 +139 @@
 ;   Parameters:
 ;       DS:DI:  Ptr to DPT for requested drive
-;               If DPT pointer is not available, or error result in BH won't be used anyway, 
+;               If DPT pointer is not available, or error result in BH won't be used anyway,
 ;               enter through .ErrorCodeNotUsed.
 ;       SS:BP:  Ptr to IDEPACK
@@ -148 +148 @@
 ;--------------------------------------------------------------------
 ResetHardDisksHandledByOurBIOS:
-    mov     bl, 0                                       ; Assume Null IdevarsOffset for now, assuming foreign drive
+    xor     bl, bl                                      ; Assume Null IdevarsOffset for now, assuming foreign drive
     test    di, di
     jz      .ErrorCodeNotUsed
     mov     bl, [di+DPT.bIdevarsOffset]                 ; replace drive number with Idevars pointer for cmp with dl
-        
-.ErrorCodeNotUsed:                                      ; BH will be garbage on exit if thie entry point is used, 
+
+.ErrorCodeNotUsed:                                      ; BH will be garbage on exit if this entry point is used,
                                                         ; but reset of all drives will still happen