Changeset 419 in xtideuniversalbios for trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm

Timestamp:

May 6, 2012, 2:34:35 PM (12 years ago)

Author:

aitotat@…

google:author:

aitotat@gmail.com

Message:

Changes to XTIDE Universal BIOS:

• IDE transfers now properly return number of sectors transferred when no errors.
• Tweaked L-CHS parameters for LBA drives.

File:

• trunk/XTIDE_Universal_BIOS/Src/Device/IDE/JrIdeTransfer.asm (modified) (3 diffs)

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

@@ -110 +110 @@
 .ReadLastBlockFromDrive:
     mov     cl, [bp+MEMPIOVARS.bSectorsLeft]
+    push    cx
     call    ReadSingleBlockFromSectorAccessWindowInDSSItoESDI
 
@@ -117 +118 @@
     mov     bx, TIMEOUT_AND_STATUS_TO_WAIT(TIMEOUT_DRQ, FLG_STATUS_BSY)
     call    IdeWait_PollStatusFlagInBLwithTimeoutInBH
+    pop     cx  ; [bp+MEMPIOVARS.bSectorsLeft]
+    jc      SHORT ReturnWithMemoryIOtransferErrorInAH
+
+    ; All rectors succesfully transferred
+    add     cx, [bp+PIOVARS.bSectorsDone]       ; Never sets CF
+    ret
 
     ; Return number of successfully transferred sectors
@@ -175 +182 @@
 .WriteLastBlockToDrive:
     mov     cl, [bp+MEMPIOVARS.bSectorsLeft]
+    push    cx
     ePUSH_T bx, CheckErrorsAfterTransferringLastMemoryMappedBlock
     ; Fall to WriteSingleBlockFromDSSIToSectorAccessWindowInESDI