Changeset 28 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Inc

Timestamp:

Aug 1, 2010, 5:57:24 PM (14 years ago)

Author:

aitotat

google:author:

aitotat

Message:

• v1.1.1 broke booting from foreign drives, it is now fixed.
• Improved error handling a bit.
• Longer DRQ and IRQ timeouts to minimize write timouts with some (bad) CF cards.
• Default boot menu drive should now be properly selected.

Location:

trunk/XTIDE_Universal_BIOS/Inc

Files:

• Int13h.inc (modified) (2 diffs)
• emulate.inc (modified) (1 diff)

trunk/XTIDE_Universal_BIOS/Inc/Int13h.inc

@@ -2 +2 @@
 ; Project name  :   IDE BIOS
 ; Created date  :   23.3.2010
-; Last update   :   23.3.2010
+; Last update   :   29.7.2010
 ; Author        :   Tomi Tilli
 ; Description   :   Equates used in INT 13h functions.
@@ -44 +44 @@
 B_TIMEOUT_BSY           EQU     (1000/55)   ; 1000 ms
 B_TIMEOUT_RDY           EQU     (1000/55)   ; 1000 ms
-B_TIMEOUT_DRQ           EQU     (5000/55)   ; 5000 ms
+B_TIMEOUT_DRQ           EQU     255         ;   14 s (some CF cards occasionally have long write delays)
 B_TIMEOUT_DRVINFO       EQU     (500/55)    ;  500 ms
 B_TIMEOUT_RESET         EQU     255         ;   14 s
+
 
 

trunk/XTIDE_Universal_BIOS/Inc/emulate.inc

@@ -152 +152 @@
 %ifndef USE_386
     %ifidni %1, ax
-        xor     ax, ax
         mov     al, %2
+        xor     ah, ah
     %elifidni %1, bx
         mov     bl, %2
         xor     bh, bh      ; %2 may use BX in effective address
     %elifidni %1, cx
-        xor     cx, cx
         mov     cl, %2
+        xor     ch, ch
     %elifidni %1, dx
-        xor     dx, dx
         mov     dl, %2
+        xor     dh, dh
     %else   ; SI, DI, BP (all may be used in effective address)
         push    ax
-        xor     ax, ax
         mov     al, %2
+        xor     ah, ah
         xchg    ax, %1
         pop     ax