Changeset 444 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/IDE/IdeCommand.asm

Timestamp:

Aug 28, 2012, 4:05:55 PM (13 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• Added XT-CF transfer functions for 80188/80186 and later.
• XT-CF drive detection timeouts are now the same as for other controllers.

File:

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

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

@@ -203 +203 @@
 ALIGN JUMP_ALIGN
 IdeCommand_SelectDrive:
-%if 0
-    ; Wait until neither Master or Slave Drive is busy
-    mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_BSY, FLG_STATUS_BSY)
-    cmp     BYTE [bp+IDEPACK.bCommand], COMMAND_IDENTIFY_DEVICE
-    eCMOVE  bh, TIMEOUT_IDENTIFY_DEVICE
-    call    IdeWait_PollStatusFlagInBLwithTimeoutInBH
-%endif
+    ; We use different timeout value when detecting drives.
+    ; This prevents unnecessary long delays when drive is not present.
+    mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY)
+    cmp     WORD [RAMVARS.wDrvDetectSignature], RAMVARS_DRV_DETECT_SIGNATURE
+    eCMOVE  bh, TIMEOUT_SELECT_DRIVE_DURING_DRIVE_DETECTION
 
     ; Select Master or Slave Drive
     mov     al, [bp+IDEPACK.bDrvAndHead]
     OUTPUT_AL_TO_IDE_REGISTER   DRIVE_AND_HEAD_SELECT_REGISTER
-    mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRDY, FLG_STATUS_DRDY)
-    cmp     BYTE [bp+IDEPACK.bCommand], COMMAND_IDENTIFY_DEVICE
-    eCMOVE  bh, TIMEOUT_IDENTIFY_DEVICE
     call    IdeWait_PollStatusFlagInBLwithTimeoutInBH