Changeset 534 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization

Timestamp:

Apr 3, 2013, 7:50:11 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Vision controllers are no longer searched from alternative port (B0h) since Intel PIIX4 south bridge mirrors PIC registers there.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/AdvancedAta/Vision.asm (modified) (3 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/AdvancedAta/Vision.asm

@@ -40 +40 @@
     mov     dx, QD65XX_BASE_PORT
     in      al, QD65XX_BASE_PORT + QD65XX_CONFIG_REGISTER_in
+
+%if 0
+    ; Checking alternative base port is currently commented away
+    ; since Intel PIIX4 south bridge mirrors Interrupt Controller registers
+    ; from Axh to Bxh.
     call    IsConfigRegisterWithIDinAL
     je      SHORT VisionControllerDetected
@@ -46 +51 @@
     or      dl, QD65XX_ALTERNATIVE_BASE_PORT
     in      al, QD65XX_ALTERNATIVE_BASE_PORT + QD65XX_CONFIG_REGISTER_in
+%endif ; 0
     ; Fall to IsConfigRegisterWithIDinAL
 
@@ -59 +65 @@
 ;       Nothing
 ;--------------------------------------------------------------------
-IsConfigRegisterWithIDinAL:
+;IsConfigRegisterWithIDinAL:
     mov     ah, al
     and     al, MASK_QDCONFIG_CONTROLLER_ID