Changeset 227 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Inc

Timestamp:

Jan 29, 2012, 1:33:44 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• EBIOS functions now work in lite mode.

Location:

trunk/XTIDE_Universal_BIOS/Inc

Files:

• CustomDPT.inc (modified) (1 diff)
• RomVars.inc (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Inc/CustomDPT.inc

@@ -12 +12 @@
     .bFlagsHigh                 resb    1
     .bIdevarsOffset             resb    1   ; Offset to IDEVARS for this drive
-                                resb    1   ; alignment byte
 
     ; IDE Drive related
-    .dwCylinders                resb    4   ; Number of Cylinders
-    .wHeadsAndSectors:
-    .bHeads                     resb    1   ; Number of Heads (1...255)
-    .bSectors                   resb    1   ; Number of Sectors per Track (1...63)
+    ; .twLbaSectors is used for LBA addressing only.
+    ; .wPchsCylinders and .bPchsSectors are used for CHS addressing only.
+    .bLbaHeads:                             ; Number of LBA assisted heads (1...255)
+    .twLbaSectors               resb    2   ; 48-bit sector count for LBA addressing
+    .wPchsCylinders             resb    2   ; Number of P-CHS Cylinders (1...16383)
+    .wPchsHeadsAndSectors:
+    .bPchsHeads                 resb    1   ; Number of P-CHS heads (1...16)
+    .bPchsSectors               resb    1   ; Number of P-CHS Sectors per Track (1...63)
 endstruc
 

trunk/XTIDE_Universal_BIOS/Inc/RomVars.inc

@@ -83 +83 @@
 struc DRVPARAMS
     .wFlags         resb    2   ; Drive flags
+    .dwMaximumLBA:              ; User specified maximum number of sectors
     .wCylinders     resb    2   ; User specified cylinders (1...16383)
     .wHeadsAndSectors:
@@ -92 +93 @@
 FLG_DRVPARAMS_USERCHS   EQU (1<<0)  ; User specified P-CHS values
 FLG_DRVPARAMS_BLOCKMODE EQU (1<<1)  ; Enable Block mode transfers
+FLG_DRVPARAMS_USERLBA   EQU (1<<2)  ; User specified LBA values