Changeset 262 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot

Timestamp:

Feb 24, 2012, 10:28:31 AM (13 years ago)

Author:

gregli@…

google:author:

gregli@hotmail.com

Message:

More optimizations. Merged RamVars_IsFunction/DriveHandledByThisBIOS in with FindDPT_ForDriveNumber, since they are often used together, making a returned NULL DI pointer indicate a foreign drive in many places. Revamped the iteration done in the handlers for int13/0dh and int13h/0h. Added serial specific print string during drive detection.

File:

• trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrint.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Boot/BootMenuPrint.asm

@@ -23 +23 @@
     mov     bp, sp
 
-    call    RamVars_IsDriveHandledByThisBIOS_And_FindDPT_ForDriveNumber
+    call    FindDPT_ForDriveNumberInDL
     jc      .notOurs
 
@@ -111 +111 @@
     mov     si, g_szCapacity                            ; Setup print string now, carries through to print call
 
-    xor     di, di                                      ; Zero DI for checks for our drive later on
-    call    RamVars_IsDriveHandledByThisBIOS_And_FindDPT_ForDriveNumber
-
-    test    dl, dl                                      ; are we a hard disk?
-    js      BootMenuPrint_HardDiskRefreshInformation    
-
-    test    di, di
-    jnz     .ours                                       ; Based on CF from RamVars_IsDriveHandledByThisBIOS above
+    call    FindDPT_ForDriveNumberInDL
+
+    inc     dl                                          ; are we a hard disk?
+    dec     dl                                          ; inc/dec will set SF, without modifying CF or DL
+    js      .HardDiskRefreshInformation 
+
+    jnc     .ours                                       ; Based on CF from FindDPT_ForDriveNumberInDL above
     call    FloppyDrive_GetType                         ; Get Floppy Drive type to BX
     jmp     .around
@@ -190 +189 @@
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
-BootMenuPrint_HardDiskRefreshInformation:       
-    test    di, di
-    jz      .HardDiskMenuitemInfoForForeignDrive        
+.HardDiskRefreshInformation:        
+    jc      .HardDiskMenuitemInfoForForeignDrive        ; Based on CF from FindDPT_ForDriveNumberInDL (way) above
 
 .HardDiskMenuitemInfoForOurDrive:
-    ePUSH_T ax, g_szInformation                     ; Add substring for our hard disk information
-    call    BootMenuInfo_GetTotalSectorCount        ; Get Total LBA Size
+    ePUSH_T ax, g_szInformation                         ; Add substring for our hard disk information
+    call    BootMenuInfo_GetTotalSectorCount            ; Get Total LBA Size
     jmp     .ConvertSectorCountInBXDXAXtoSizeAndPushForFormat