Changeset 252 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm

Timestamp:

Feb 18, 2012, 2:12:54 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Boot menu now shows only one capacity.
• Added "strings" makefile target to compress strings.

File:

• trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Boot/BootInfo.asm

@@ -63 +63 @@
     ret
 
-        
+
 ;--------------------------------------------------------------------
-; Finds BOOTNFO for drive and returns total sector count.
-;
 ; BootInfo_GetTotalSectorCount
 ;   Parameters:
@@ -73 +71 @@
 ;       BX:DX:AX:   48-bit sector count
 ;   Corrupts registers:
-;       Nothing
+;       CX
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
 BootInfo_GetTotalSectorCount:
-    push    ds
-    call    BootInfo_ConvertDPTtoBX
-    LOAD_BDA_SEGMENT_TO ds, ax
-    mov     ax, [bx+BOOTNFO.twSectCnt]
-    mov     dx, [bx+BOOTNFO.twSectCnt+2]
-    mov     bx, [bx+BOOTNFO.twSectCnt+4]
-    pop     ds
-    ret
+    test    BYTE [di+DPT.bFlagsLow], FLG_DRVNHEAD_LBA
+    jnz     SHORT .ReturnFullCapacity
+    jmp     AH15h_GetSectorCountToBXDXAX
+.ReturnFullCapacity:
+    jmp     AccessDPT_GetLbaSectorCountToBXDXAX