Changeset 88 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Handlers/Int13h/Common/HStatus.asm

Timestamp:

Jan 27, 2011, 8:14:13 AM (14 years ago)

Author:

Tomi Tilli

google:author:

aitotat

Message:

Changes to XTIDE Universal BIOS:

• Now uses new libraries (untested)
• Non-working since code size is too large

File:

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

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

@@ -1 @@
-; File name     :   HStatus.asm
-; Project name  :   IDE BIOS
-; Created date  :   15.12.2009
-; Last update   :   23.8.2010
-; Author        :   Tomi Tilli
+; Project name  :   XTIDE Universal BIOS
 ; Description   :   IDE Status Register polling functions.
 
@@ -176 +172 @@
 ALIGN JUMP_ALIGN
 HStatus_PollBsyAndFlg:
-    call    SoftDelay_InitTimeout               ; Initialize timeout counter
+    call    InitializeTimeoutWithTicksInCL      ; Initialize timeout counter
     in      al, dx                              ; Discard contents for first read
                                                 ; (should read Alternate Status Register)
@@ -188 +184 @@
 ALIGN JUMP_ALIGN
 .UpdateTimeout:
-    call    SoftDelay_UpdTimeout                ; Update timeout counter
+    call    SetCFifTimeout
     jnc     SHORT .PollLoop                     ; Loop if time left (sets CF on timeout)
     jmp     HError_ProcessTimeoutAfterPollingBSYandSomeOtherStatusBit
@@ -210 +206 @@
 ALIGN JUMP_ALIGN
 HStatus_PollBsy:
-    call    SoftDelay_InitTimeout               ; Initialize timeout counter
+    call    InitializeTimeoutWithTicksInCL      ; Initialize timeout counter
     in      al, dx                              ; Discard contents for first read
                                                 ; (should read Alternate Status Register)
@@ -218 +214 @@
     test    al, FLG_IDE_ST_BSY                  ; Controller busy?
     jz      SHORT GetErrorCodeFromPollingToAH   ;  If not, jump to check errors
-    call    SoftDelay_UpdTimeout                ; Update timeout counter
+    call    SetCFifTimeout                      ; Update timeout counter
     jnc     SHORT .PollLoop                     ; Loop if time left (sets CF on timeout)
 ALIGN JUMP_ALIGN
 GetErrorCodeFromPollingToAH:
     jmp     HError_ProcessErrorsAfterPollingBSY
+
+
+;--------------------------------------------------------------------
+; InitializeTimeoutWithTicksInCL
+;   Parameters:
+;       CL:     Timeout value in system timer ticks
+;       DS:     Segment to RAMVARS
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       CX
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+InitializeTimeoutWithTicksInCL:
+    push    bx
+    xchg    cx, ax
+
+    xor     ah, ah      ; Timeout ticks now in AX
+    mov     bx, RAMVARS.wTimeoutCounter
+    call    TimerTicks_InitializeTimeoutFromAX
+
+    xchg    ax, cx      ; Restore AX
+    pop     bx
+    ret
+
+;--------------------------------------------------------------------
+; SetCFifTimeout
+;   Parameters:
+;       DS:     Segment to RAMVARS
+;   Returns:
+;       Nothing
+;   Corrupts registers:
+;       CX
+;--------------------------------------------------------------------
+ALIGN JUMP_ALIGN
+SetCFifTimeout:
+    push    bx
+    xchg    cx, ax
+
+    mov     bx, RAMVARS.wTimeoutCounter
+    call    TimerTicks_GetTimeoutTicksLeftToAXfromDSBX
+
+    xchg    ax, cx      ; Restore AX
+    pop     bx
+    ret