Changeset 545 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm

Timestamp:

Apr 19, 2013, 11:44:35 AM (11 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Integrated XT-CFv3 support by James Pearce.
• XT-CFv2 memory mapped I/O and DMA modes are no longer supported (but PIO mode is).

File:

• trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm (modified) (1 diff)

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

@@ -67 +67 @@
 
     ; Get far pointer to Sector Access Window
-    mov     dx, [di+DPT.wBasePort]
     cmp     BYTE [di+DPT_ATA.bDevice], DEVICE_8BIT_JRIDE_ISA
-    jb      SHORT .GetSectorAccessWindowForXTCF
-
-    ; Get Sector Access Window for JR-IDE/ISA and ADP50L
-    mov     ds, dx      ; Segment for JR-IDE/ISA and ADP50L
-    mov     di, JRIDE_SECTOR_ACCESS_WINDOW_OFFSET
-    je      SHORT .SectorAccessWindowLoadedToDSDI
+    mov     ds, [di+DPT.wBasePort]  ; Segment for JR-IDE/ISA and ADP50L
     mov     di, ADP50L_SECTOR_ACCESS_WINDOW_OFFSET
-    jmp     SHORT .SectorAccessWindowLoadedToDSDI
-
-.GetSectorAccessWindowForXTCF:
-    xor     di, di
-    add     dl, XTCF_CONTROL_REGISTER
-    in      al, dx                  ; Read high byte for Sector Access Window segment
-    xchg    ah, al
-    mov     ds, ax
+    eCMOVE  di, JRIDE_SECTOR_ACCESS_WINDOW_OFFSET
 
     ; Are we reading or writing?