Changeset 568 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/CreateDPT.asm

Timestamp:

Dec 21, 2014, 5:37:53 PM (10 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• SerDrive: Using named pipe mode (serdrive -p) now works under Windows XP/2000/Server 2003.
• checksum.pl: Added a compatibility fix for 3Com 3C503 cards.
• XTIDECFG will now scan every possible segment address to find and load the BIOS and/or its settings from EEPROM. This should simplify things for people using combined option ROMs.
• Fixed a bug from r521 in BootSector.asm where the BIOS would not display a timeout error if it failed to load the boot sector from harddrive.
• Fixed a bug from r541 in CompatibleDPT.asm where CompatibleDPT_CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI would generate an invalid checksum in the DPTE.
• Optimizations and other fixes.

File:

• trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/CreateDPT.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/CreateDPT.asm

@@ -116 +116 @@
     jnz     SHORT .NothingToChange
 
-.LimitHeadsForLargeAddressingMode:
     ; We cannot have 16 P-Heads heads in Revised ECHS mode (8193 or more cylinders)
     ; but 16 heads are allowed when there are 8192 or less cylinders (ECHS).
     ; Both of these are LARGE modes so do not confuse with NORMAL mode.
     call    AtaGeometry_IsDriveSmallEnoughForECHS
-    jc      SHORT .NothingToChange
-    dec     bx                      ; Adjust 16 P-Heads to 15
+    adc     bx, -1                  ; Adjust 16 P-Heads to 15 if needed
 
 .NothingToChange: