history.txt

ATADRVR是DOS下的磁盘驱动程序,采用PIO传输 ,PCI DMA传输,ATA包,等非常全面代码示例... 内部有C与Asm描述. 编译环境:Borland C/C++ 4.52 与 Bo

                    ------------------------
                    ATADRVR HISTORY.TXT FILE
                    ------------------------

                         by Hale Landis

Here is a brief list of the new and changed things in the last
few versions of ATADRVR.

                      -------------------
                      ATADRVR CHANGE LIST
                      -------------------

Version 16M

   The BMCR/BMIDE Status register Error bit is now checked at the
   end of every reset or command (PIO and DMA).  Traditionally
   this bit was used only to report PCI bus error conditions
   during DMA operations.  Now it seems that some SATA host
   controllers are using this bit to report SATA packet
   transmission errors during any SATA interface activity.

   Checking for BSY=0 and DRQ=0 in sub_select() (in ATAIOSUB.C)
   was fixed to conform to the ATA/ATAPI standards.

Version 16K and 16L

   Skipped these version numbers.

Version 16J

   Major changes were made to interrupt handling in ATAIOINT.C
   and in the calls to the int_*() functions in ATAIOISA.C,
   ATAIOPCI.C and ATAIOREG.C.

Version 16I

   Skipped this version number.

Version 16H

   Support for SIMPLE, COMPLEX and LARGE PRD lists added to
   ATAIOPCI.C.

   See Example1 and Example2 below.

Version 16G

   reg_config() in ATAIOREG.C recognizes the new ATA/ATAPI-7
   signature values for SATA devices.

Version 16E and 16F

   Version 16F is the same as version 16E.

   Additional checking for buffer overrun was added.

   A bug in the low level trace display was fixed.  This bug
   caused the "delay" entries in the trace to be displayed as
   "error" entries.  This was only a trace display problem.

Version 16D

   Incorrect handling of the multiple count for READ MULTIPLE EXT
   was fixed in ATAIOREG.C.

   Data transfer functions in ATAIOPIO.C where rewritten so that
   wrapping the offset portion of the I/O buffer address is not
   possible.

Version 16C

   A restriction that forced the READ/WRITE BUFFER commands
   to transfer only one sector was removed.

Version 16B

   A bug in ATAIOINT.C was fixed. The DS register was not
   saved and restored in the native mode interrupt handler.

Version 16A

   ATAIOPCI.C was changed such that interrupts are required in
   order to execute DMA data transfer commands.

   ATAIOINT.C was changed to support both legacy mode and native
   mode interrupts from ATA controllers using IRQ 1 to 15.


                      --------------------
                      EXAMPLE1 CHANGE LIST
                      --------------------

Here is a brief list of the new and changed things in the last
few versions of the EXAMPLE1 program:

Version 16K

   No changes.

Version 16J

   Changes make to the int_*() function calls.

Version 16I

   Skipped this version number.

Version 16H

   The I/O base addresses for a secondary ATA controller were
   fetch from the wrong offset in the PCI configuration space.
   This bug was fixed.

Version 16B-16G

   No changes.

Version 16A

   Significant changes were made to the example programs.  These
   programs now provide a better example of how to deal with PCI
   bus ATA host contollers.


                      --------------------
                      EXAMPLE2 CHANGE LIST
                      --------------------

Here is a brief list of the new and changed things in the last
few versions of the EXAMPLE2 program:

Version 16K

   No changes.

Version 16J

   Changes make to the int_*() function calls.

Version 16I

   Skipped this version number.

Version 16H

   The I/O base addresses for a secondary ATA controller were
   fetch from the wrong offset in the PCI configuration space.
   This bug was fixed.

Version 16B-16G

   No changes.

Version 16A

   Significant changes were made to the example programs.  These
   programs now provide a better example of how to deal with PCI
   bus ATA host contollers.


QUESTIONS OR PROBLEMS?
----------------------

Send your question(s) or problem description(s) to Hale Landis
via email at this address:

   [e-mail]

Visit Hale's web site:

   www.ata-atapi.com

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