Changeset 480 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm

Timestamp:

Oct 27, 2012, 11:26:11 AM (11 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• XT-CF DMA transfers should now work.

File:

• trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm (modified) (2 diffs)

trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm

@@ -88 +88 @@
 
 %ifdef MODULE_8BIT_IDE
-    ; We set XT-CF to 8-bit PIO mode for Identify Device command.
-    ; Correct XT-CF mode is later set on AH=09h (after all drives are detected).
-    call    AccessDPT_IsThisDeviceXTCF
-    jne     SHORT .SkipXTCFmodeChange
-
+    ; Enable 8-bit PIO mode for 8-bit ATA and XT-CF
+    push    si
+    call    AH9h_Enable8bitModeForDevice8bitAta
     xor     al, al                      ; XTCF_8BIT_PIO_MODE
-    push    si
-    call    AH1Eh_ChangeXTCFmodeBasedOnControlRegisterInAL
+    call    AH9h_SetModeFromALtoXTCF
     pop     si
-    jc      SHORT .FailedToSet8bitMode
-.SkipXTCFmodeChange:
 %endif ; MODULE_8BIT_IDE
 
@@ -178 +173 @@
     jne     SHORT .WaitUntilNonTransferCommandCompletes
 %ifdef MODULE_8BIT_IDE
-    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_DMA
-    je      SHORT .StartDmaTransfer
-    ja      SHORT JrIdeTransfer_StartWithCommandInAL    ; DEVICE_8BIT_XTCF_MEMMAP or DEVICE_8BIT_JRIDE_ISA
+    cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_XTCF_MEMMAP
+    jae     SHORT JrIdeTransfer_StartWithCommandInAL    ; DEVICE_8BIT_XTCF_MEMMAP or DEVICE_8BIT_JRIDE_ISA
+%endif
     jmp     IdeTransfer_StartWithCommandInAL
-.StartDmaTransfer:
-    jmp     IdeDmaTransfer_StartWithCommandInAL
-%else
-    jmp     IdeTransfer_StartWithCommandInAL
-%endif
 
 .WaitUntilNonTransferCommandCompletes: