Changeset 542 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm

Timestamp:

Apr 15, 2013, 4:03:33 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Fixed a bug that allowed EBIOS functions for user defined CHS.
• Simplified user defined CHS and LBA setup a little.

File:

• trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AccessDPT.asm

@@ -22 +22 @@
 
 ;--------------------------------------------------------------------
-; AccessDPT_GetDriveSelectByteForOldInt13hToAL
-; AccessDPT_GetDriveSelectByteForEbiosToAL
+; AccessDPT_GetDriveSelectByteToAL
 ;   Parameters:
 ;       DS:DI:  Ptr to Disk Parameter Table
@@ -32 +31 @@
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
-AccessDPT_GetDriveSelectByteForOldInt13hToAL:
+AccessDPT_GetDriveSelectByteToAL:
     mov     al, [di+DPT.bFlagsLow]
-    test    al, FLGL_DPT_ASSISTED_LBA
-    jnz     SHORT GetDriveSelectByteForAssistedLBAtoAL
-
-    and     al, FLG_DRVNHEAD_DRV    ; Clear all but drive select bit
+    and     al, FLGL_DPT_SLAVE | FLGL_DPT_LBA
     or      al, MASK_DRVNHEAD_SET   ; Bits set to 1 for old drives
-    ret
-
-%ifdef MODULE_EBIOS
-ALIGN JUMP_ALIGN
-AccessDPT_GetDriveSelectByteForEbiosToAL:
-    mov     al, [di+DPT.bFlagsLow]
-    ; Fall to GetDriveSelectByteForAssistedLBAtoAL
-%endif ; MODULE_EBIOS
-
-ALIGN JUMP_ALIGN
-GetDriveSelectByteForAssistedLBAtoAL:
-    and     al, FLG_DRVNHEAD_DRV    ; Master / Slave select
-    or      al, FLG_DRVNHEAD_LBA | MASK_DRVNHEAD_SET
     ret