Changeset 169 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/Idepack.asm

Timestamp:

Aug 21, 2011, 4:39:58 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Old Int 13h functions can now transfer 256 sectors per call.
• eINT 13h functions can now transfer 65535 sectors per call.

File:

• trunk/XTIDE_Universal_BIOS/Src/Device/Idepack.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Device/Idepack.asm

@@ -39 +39 @@
 Idepack_ConvertDapToIdepackAndIssueCommandFromAH:
     mov     [bp+IDEPACK.bCommand], ah
-    mov     al, [es:si+DAP.wSectorCount]
+    mov     ax, [es:si+DAP.wSectorCount]
     mov     [bp+IDEPACK.bSectorCount], al
+    mov     [bp+IDEPACK.bSectorCountHighExt], ah
 
     mov     al, [es:si+DAP.qwLBA]       ; LBA byte 0
@@ -81 +82 @@
 ALIGN JUMP_ALIGN
 Idepack_TranslateOldInt13hAddressAndIssueCommandFromAH:
+    mov     [bp+IDEPACK.bCommand], ah
+    test    al, al
+    eCSETZ  ah
     mov     [bp+IDEPACK.bSectorCount], al
-    mov     [bp+IDEPACK.bCommand], ah
+    mov     [bp+IDEPACK.bSectorCountHighExt], ah
 
     push    bx
@@ -125 +129 @@
     mov     [bp+IDEPACK.wSectorCountAndLbaLow], dx
     mov     [bp+IDEPACK.wLbaMiddleAndHigh], cx
+    mov     BYTE [bp+IDEPACK.bSectorCountHighExt], 0
 
     ; Drive and Head select byte