Changeset 413 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Initialization

Timestamp:

Apr 28, 2012, 4:23:30 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Hotkeys are now displayed at least 5 seconds.
• Optimized ROM initialization routine.

File:

• trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Initialization/Initialize.asm

@@ -33 +33 @@
 ;       Nothing
 ;--------------------------------------------------------------------
-Initialize_FromMainBiosRomSearch:           ; unused entrypoint ok
-    pushf
-    push    es
+Initialize_FromMainBiosRomSearch:       ; unused entrypoint ok
+    pushf                               ; To store IF
     push    ds
-    ePUSHA
 
-    LOAD_BDA_SEGMENT_TO es, ax
-    sti                                     ; Enable interrupts
-    test    BYTE [es:BDA.bKBFlgs1], (1<<2)  ; Clears ZF if CTRL is held down
+%ifndef USE_186
+    push    ax
+    LOAD_BDA_SEGMENT_TO ds, ax
+%else
+    push    BYTE 0
+    pop     ds
+%endif
+
+    sti                                 ; Enable interrupts for keystrokes
+    test    BYTE [BDA.bKBFlgs1], (1<<2) ; Clears ZF if CTRL is held down
     jnz     SHORT .SkipRomInitialization
 
     ; Install INT 19h handler (boot loader) where drives are detected
-    mov     al, BIOS_BOOT_LOADER_INTERRUPT_19h
-    mov     si, Int19h_BootLoaderHandler
-    call    Interrupts_InstallHandlerToVectorInALFromCSSI
+    mov     WORD [BIOS_BOOT_LOADER_INTERRUPT_19h*4], Int19h_BootLoaderHandler
+    mov     [BIOS_BOOT_LOADER_INTERRUPT_19h*4+2], cs
 
 .SkipRomInitialization:
-    ePOPA
+%ifndef USE_186
+    pop     ax
+%endif
     pop     ds
-    pop     es
     popf
     retf
@@ -66 +71 @@
 ;       DS:     RAMVARS segment
 ;   Corrupts registers:
-;       All
+;       All, except ES
 ;--------------------------------------------------------------------
 Initialize_AndDetectDrives: