Changeset 148 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HCapacity.asm

Timestamp:

Mar 19, 2011, 8:09:41 PM (13 years ago)

Author:

aitotat

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• INT 13h optimizations to save almost 100 bytes.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HCapacity.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HCapacity.asm

@@ -13 +13 @@
 ;       DL:     Drive number
 ;       DS:     RAMVARS segment
+;       DS:DI:  Ptr to DPT (HCapacity_GetSectorCountFromOurAH08h)
 ;   Returns:
 ;       DX:AX:  Total sector count
@@ -21 +22 @@
 ALIGN JUMP_ALIGN
 HCapacity_GetSectorCountFromForeignAH08h:
-    mov     ah, 08h         ; Get Drive Parameters
+    mov     ah, GET_DRIVE_PARAMETERS
     call    Int13h_CallPreviousInt13hHandler
-    jmp     SHORT HCapacity_ConvertAH08hReturnValuesToSectorCount
+    jmp     SHORT ConvertAH08hReturnValuesToSectorCount
 
 ALIGN JUMP_ALIGN
 HCapacity_GetSectorCountFromOurAH08h:
-    push    di
     call    AH8h_GetDriveParameters
-    pop     di
-    ; Fall to HCapacity_ConvertAH08hReturnValuesToSectorCount
+    ; Fall to ConvertAH08hReturnValuesToSectorCount
 
-ALIGN JUMP_ALIGN
-HCapacity_ConvertAH08hReturnValuesToSectorCount:
+ConvertAH08hReturnValuesToSectorCount:
     call    HAddress_ExtractLCHSFromBiosParams
     xor     ax, ax          ; Zero AX