Changeset 568 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Flash.asm

Timestamp:

Dec 21, 2014, 5:37:53 PM (9 years ago)

Author:

krille_n_@…

google:author:

krille_n_@hotmail.com

Message:

Changes:

• SerDrive: Using named pipe mode (serdrive -p) now works under Windows XP/2000/Server 2003.
• checksum.pl: Added a compatibility fix for 3Com 3C503 cards.
• XTIDECFG will now scan every possible segment address to find and load the BIOS and/or its settings from EEPROM. This should simplify things for people using combined option ROMs.
• Fixed a bug from r521 in BootSector.asm where the BIOS would not display a timeout error if it failed to load the boot sector from harddrive.
• Fixed a bug from r541 in CompatibleDPT.asm where CompatibleDPT_CreateDeviceParameterTableExtensionToESBXfromDPTinDSSI would generate an invalid checksum in the DPTE.
• Optimizations and other fixes.

File:

• trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Flash.asm (modified) (7 diffs)

trunk/XTIDE_Universal_BIOS_Configurator_v2/Src/Flash.asm

@@ -83 +83 @@
 
     push    cx
-    call    .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
+    call    .GetSdpCommandFunctionToAXwithFlashvarsInSSBP
     mov     cx, [bp+FLASHVARS.wEepromPageSize]
     mov     si, [bp+FLASHVARS.fpNextSourcePage]
@@ -94 +94 @@
 
 ;--------------------------------------------------------------------
-; .GetSdpCommandFunctionToDXwithFlashvarsInSSBP
-;   Parameters:
-;       SS:BP:  Ptr to FLASHVARS
-;   Returns:
-;       DX:     Ptr to SDP Command function
+; .GetSdpCommandFunctionToAXwithFlashvarsInSSBP
+;   Parameters:
+;       SS:BP:  Ptr to FLASHVARS
+;   Returns:
+;       AX:     Ptr to SDP Command function
 ;   Corrupts registers:
 ;       BX, SI
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
-.GetSdpCommandFunctionToDXwithFlashvarsInSSBP:
+.GetSdpCommandFunctionToAXwithFlashvarsInSSBP:
     eMOVZX  bx, [bp+FLASHVARS.bEepromSdpCommand]
     mov     si, [cs:bx+.rgpSdpCommandToEepromTypeLookupTable]
     mov     bl, [bp+FLASHVARS.bEepromType]
-    mov     dx, [cs:bx+si]
+    mov     ax, [cs:bx+si]
     ret
 
@@ -182 +182 @@
 ;       Nothing
 ;   Corrupts registers:
-;       Nothing
+;       AX
 ;--------------------------------------------------------------------
 %macro DISABLE_SDP 2
-    mov     BYTE [%1], 0AAh
-    mov     BYTE [%2], 55h
-    mov     BYTE [%1], 80h
-    mov     BYTE [%1], 0AAh
-    mov     BYTE [%2], 55h
-    mov     BYTE [%1], 20h
+    mov     ax, 80AAh
+%%Again:
+    mov     [%1], al        ; 0AAh
+    shr     al, 1
+    mov     [%2], al        ; 55h
+    mov     [%1], ah        ; 80h/20h
+    xor     ax, 0A0FFh
+    jns     SHORT %%Again
 %endmacro
 
@@ -215 +217 @@
 WriteSdpEnableCommandFor2864mod:
     ENABLE_SDP 155Ch, 0AA3h
-    jmp     ReturnFromSdpCommand
+    jmp     SHORT ReturnFromSdpCommand
 
 ALIGN JUMP_ALIGN
 WriteSdpEnableCommandFor28256or28512:
     ENABLE_SDP 5555h, 2AAAh
-    jmp     ReturnFromSdpCommand
+    jmp     SHORT ReturnFromSdpCommand
 
 
@@ -241 +243 @@
 WriteSdpDisableCommandFor28256or28512:
     DISABLE_SDP 5555h, 2AAAh
-DoNotWriteAnySdpCommand:
-    jmp     SHORT ReturnFromSdpCommand
-
-
-;--------------------------------------------------------------------
-; WriteNextChangedByteFromPageToEeprom
-;   Parameters:
+    jmp     SHORT ReturnFromSdpCommand
+
+DoNotWriteAnySdpCommand EQU ReturnFromSdpCommand
+
+
+;--------------------------------------------------------------------
+; WriteAllChangedBytesFromPageToEeprom
+;   Parameters:
+;       AX:     Offset to SDP command function
+;       BX:     Offset to next destination byte
 ;       CX:     Number of bytes left to write
-;       DX:     Offset to SDP command function
-;       BX:     Offset to next destination byte
 ;       SI:     Offset to next source byte
 ;       ES:DI:  Ptr to next comparison byte
@@ -258 +261 @@
 ;               Cleared if page written successfully
 ;   Corrupts registers:
-;       AX, BX, CX, SI, DI, DS, ES
+;       AX, BX, CX, DX, SI, DI, DS, ES
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
 WriteAllChangedBytesFromPageToEeprom:
-    mov     ax, [bp+FLASHVARS.fpNextSourcePage+2]       ; AX = Source segment
+    mov     dx, [bp+FLASHVARS.fpNextSourcePage+2]       ; DX = Source segment
     mov     ds, [bp+FLASHVARS.fpNextDestinationPage+2]  ; DS = EEPROM segment
     cli                     ; Disable interrupts
-    jmp     dx              ; Write SDP command (once to the beginning of page)
+    jmp     ax              ; Write SDP command (once to the beginning of page)
 ALIGN JUMP_ALIGN
 ReturnFromSdpCommand:
-    mov     ds, ax          ; DS:SI now points to source byte
+    mov     ds, dx          ; DS:SI now points to source byte
 
 ALIGN JUMP_ALIGN
@@ -278 +281 @@
     mov     ds, [bp+FLASHVARS.fpNextDestinationPage+2]  ; DS:BX now points to EEPROM
     mov     [bx], al        ; Write byte to EEPROM
-    mov     ds, [bp+FLASHVARS.fpNextSourcePage+2]       ; Restore DS
+    mov     ds, dx          ; Restore DS
     mov     [bp+FLASHVARS.wLastOffsetWritten], bx
     mov     [bp+FLASHVARS.bLastByteWritten], al