Changeset 580 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AtaGeometry.asm

Timestamp:

Feb 19, 2015, 1:38:02 PM (9 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• XTIDECFG: Fixed a bug from r459 where the menu option for selection of default boot drive would be missing if the BIOS had been built without MODULE_HOTKEYS. The menu option is now visible if either or both of MODULE_HOTKEYS and MODULE_BOOT_MENU is available.
• BIOS: Disabled ATA-ID validation by adding a new define (NO_ATAID_VALIDATION) and making it the default for all builds since at least two WD Caviar drive models are incompatible with it.
• Fixed the "No Fixed Disk Present in FDISK"-bug introduced in r551 which means the Tiny build now works without including MODULE_DRIVEXLATE.
• Fixed a bug from r528 where pressing hotkey F6 would not initiate detection of serial drives.
• Fixed a bug from r186 in DisplayFormatCompressed.asm where the boot menu would print the IRQ in hexadecimal format when it should be in decimal format.
• Optimizations and fixes.

File:

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

trunk/XTIDE_Universal_BIOS/Src/VariablesAndDPTs/AtaGeometry.asm

@@ -304 +304 @@
     ; Max = 16,514,064 / 63 = 262128
     mov     cx, LBA_ASSIST_SPT          ; CX = 63
-    call    Math_DivDXAXbyCX
+    call    Math_DivDXAXbyCX            ; Preserves CX
     push    dx
     push    ax                          ; Value CH stored for later use
@@ -316 +316 @@
     ; AX = Number of heads = ((Value CH - 1) / 1024) + 1
     ; Max = (262127 / 1024) + 1 = 256
-    push    si
-    call    Size_DivideSizeInBXDXAXby1024andIncrementMagnitudeInCX
-    pop     si
+    call    Size_DivideSizeInBXDXAXby1024   ; Preserves CX
     inc     ax                          ; + 1
 
     ; Heads must be 16, 32, 64, 128 or 255 (round up to the nearest)
     ; Max = 255
-    mov     cx, 16                      ; Min number of heads
+    mov     cl, 16                      ; Min number of heads
 .CompareNextValidNumberOfHeads:
     cmp     ax, cx