Changeset 148 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm

Timestamp:

Mar 19, 2011, 8:09:41 PM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• INT 13h optimizations to save almost 100 bytes.

File:

• trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm (modified) (5 diffs)

trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HError.asm

@@ -1 @@
-; Project name  :   IDE BIOS
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   Error checking functions for BIOS Hard disk functions.
 
@@ -6 +6 @@
 
 ;--------------------------------------------------------------------
-; HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit
-; HError_ProcessErrorsAfterPollingBSY
+; HError_GetErrorCodeToAHforTimeoutWhenPolling
 ;   Parameters:
 ;       DS:     RAMVARS segment
@@ -18 +17 @@
 ;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
-HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit:
-    call    HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA
-    call    GetBiosErrorCodeToAHfromStatusAndErrorRegistersInAX
+HError_GetErrorCodeToAHforTimeoutWhenPolling:
+    call    HError_GetErrorCodeToAHafterPolling
     jc      SHORT .ReturnErrorCodeInAH
     mov     ah, RET_HD_TIMEOUT          ; Force timeout since no actual error...
@@ -28 +26 @@
 
 
+;--------------------------------------------------------------------
+; HError_GetErrorCodeToAHafterPolling
+;   Parameters:
+;       DS:     RAMVARS segment
+;   Returns:
+;       AH:     BIOS error code
+;       CF:     Set if error
+;               Cleared if no error
+;   Corrupts registers:
+;       AL
+;--------------------------------------------------------------------
 ALIGN JUMP_ALIGN
-HError_ProcessErrorsAfterPollingBSY:
+HError_GetErrorCodeToAHafterPolling:
 %ifndef USE_186
     call    HError_GetStatusAndErrorRegistersToAXandStoreThemToBDA
@@ -131 +140 @@
     db  RET_HD_BADSECTOR    ; Bit7=BBK, Bad Block Detected
     db  RET_HD_STATUSERR    ; When Error Register is zero
+
+
+;--------------------------------------------------------------------
+; HError_SetErrorCodeToBdaAndToIntpackInSSBPfromAH
+; HError_SetErrorCodeToIntpackInSSBPfromAH
+;   Parameters:
+;       AH:     BIOS error code (00h = no error)
+;       SS:BP:  Ptr to INTPACK
+;   Returns:
+;       SS:BP:  Ptr to INTPACK with error condition set
+;   Corrupts registers:
+;       DS, DI
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+HError_SetErrorCodeToBdaAndToIntpackInSSBPfromAH:
+    ; Store error code to BDA
+    LOAD_BDA_SEGMENT_TO ds, di
+    mov     [BDA.bHDLastSt], ah
+
+    ; Store error code to INTPACK
+HError_SetErrorCodeToIntpackInSSBPfromAH:
+    mov     [bp+INTPACK.ah], ah
+    test    ah, ah
+    jnz     SHORT .SetCFtoIntpack
+    and     BYTE [bp+INTPACK.flags], ~FLG_FLAGS_CF
+    ret
+.SetCFtoIntpack:
+    or      BYTE [bp+INTPACK.flags], FLG_FLAGS_CF
+    ret