Changeset 364 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers

Timestamp:

Mar 27, 2012, 4:21:58 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Advanced ATA Module variables are now kept in DPTs.
• Forced full mode when using Advanced ATA Module.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/AH9h_HInit.asm

@@ -171 +171 @@
 ;--------------------------------------------------------------------
 InitializePioMode:
-    xor     dx, dx                      ; Parameter to Sector Count Register = 0 = PIO_DEFAULT_MODE
-    mov     al, [di+DPT_ATA.bPioMode]
-    cmp     al, 3                       ; PIO mode 3 and above require IORDY
-    jb      SHORT .SetTransferMode
-    or      dl, al
-.SetTransferMode:
+    mov     dl, PIO_DEFAULT_MODE_DISABLE_IORDY
+    test    BYTE [di+DPT.bFlagsHigh], FLGH_DPT_IORDY
+    jz      SHORT .IordyNotSupported
+
+    ; Advanced PIO mode 3 and above
+    mov     dl, [di+DPT_ADVANCED_ATA.bPioMode]
+    or      dl, PIO_FLOW_CONTROL_MODE_xxx
+
+.IordyNotSupported:
     mov     si, FEATURE_SET_TRANSFER_MODE
     jmp     AH23h_SetControllerFeatures