Changeset 174 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS

Timestamp:

Sep 18, 2011, 10:51:12 PM (13 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes to XTIDE Universal BIOS:

• Excluded the Math_DivDXAXbyCX procedure as it is currently unused. Also made it 2 bytes smaller.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/AtaID.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/AtaID.asm

@@ -10 +10 @@
 ; this is how to fit a big drive into INT13's skimpy size requirements,
 ; with a maximum of 8.4G available.
-; 
-; total LBAs (as obtained by words 60+61) 
+;
+; total LBAs (as obtained by words 60+61)
 ; divided by 63 (sectors per track) (save as value A)
 ; Sub 1 from A
-; divide A by 1024 + truncate. 
+; divide A by 1024 + truncate.
 ; == total number of heads to use.
 ; add 1
 ; this value must be either 16, 32, 64, 128, or 256 (round up)
 ; then take the value A above and divide by # of heads
-; to get the # of cylinders to use.  
+; to get the # of cylinders to use.
 ;
 ;
 ; so a LBA28 drive will have 268,435,456 as maximum LBAs
-; 
+;
 ; 10000000h / 63   = 410410h (total cylinders or tracks)
 ;   410410h / 1024 = 1041h, which is way more than 256 heads, but 256 is max.
@@ -35 +35 @@
 ; anyway, so there's no need to use the 48bit LBA values.
 ;
-; AtaID_GetLbaAssistedCHStoAXBLBH:
+; AtaID_GetLbaAssistedCHStoDXAXBLBH:
 ;   Parameters:
 ;       BX:DX:AX:   Total number of sectors