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              Or1ksim: The OpenRISC 1000 Architectural Simulator
              ==================================================


New in top of tree
==================

The library interface is extended to allow registers and memory to be written
directly. This is to allow direct integration as a simulator in GDB.

The following bugs are fixed.
* Bug 1797: Or1ksim does not compile with GCC 3.4.4 under Cygwin
* Bug 1795: GDB breakpoints do not work with Icache enabled.

New in release 0.4.0
====================

No new features or bugs. This is the full release based on 0.4.0rc2.


New in release 0.4.0rc2
=======================

No new features are provided, pending full release of 0.4.0.

The configuration options --enable-arith-flag and --enable-ov-flag have been
removed, since they were the source of bugs, notably Bugs 1782, 1783 and 1784.

The configuration option --enable-unsigned-xori has been added to allow a
conditional solution to Bug 1790.

The following bugs are fixed.
* Bug 1770: l.div does not set carry or give correct exception.
* Bug 1771: l.add* do not correctly set the overflow flag.
* Bug 1772: l.fl1 not implemented.
* Bug 1773: l.maci not correctly implemented.
* Bug 1774: l.mulu not implemented.
* Bug 1775: l.jalr and l.jr don't trigger alignment exceptions.
* Bug 1776: l.addic is not implemented.
* Bug 1777: l.macrc not correctly implemented.
* Bug 1778: l.ror and l.rori are not implemented.
* Bug 1779: l.mtspr implementation is incorrect.
* Bug 1782: Or1ksim setting of overflow flag is wrong.
* Bug 1783: Or1ksim definition of overflow is wrong.
* Bug 1784: Or1ksim does not trigger overflow exceptions.
* Bug 1790: l.xori implementation is incorrect.

The following bugs are either cannot be reproduced or will not be fixed.

The following bugs are outstanding
* Bug 1758: Memory controller issues. Workaround in the user guide.


New in release 0.4.0rc1
=======================

The following new features are provided.
* testbench now renamed testsuite and fully integrated using DejaGNU.
  "make check" now works correctly if the OpenRISC toolchain is installed.
* New configuration flag --enable-all-tests to enable building of incomplete
  tests with "make check".
* The library offers an interface via modelled JTAG
* Single precision floating point is available.

The user guide is updated.

The following feature requests have been accepted.
* Feature  413: ORFPX32 single precision floating point now supported.
* Feature  469: Icache tags now intialized as invalid.
* Feature 1673: Or1ksim now builds on Mac OS X.
* Feature 1678: download, patch and build dirs removed from SVN.

The following feature requests have been rejected.
* Feature  399: Writeable SR_LEE bit will not be provided.
* Feature  409: Separate ELF loader library already exists in binutils.
* Feature  586: Ignoring HW breakpoints is already possible.

The following bugs are fixed.
* Bug  534: Test suite fixed (see above).
* Bug 1710: mprofile now handles mode args correctly.
* Bug 1723: PS2 keyboard error message clearer if RX file won't open.
* Bug 1733: Or1ksim now accepts ELF image when working through RSP.
* Bug 1767: l.lws is not recognized as an opcode.

The following bugs are either cannot be reproduced or will not be fixed.

The following bugs are outstanding
* Bug 1758: Memory controller issues. Workaround in the user guide.


New in release 0.3.0
====================

* No new features or bugs. This is the full release based on rc3.

New in release 0.3.0rc3
=======================

* Bug 376 fixed: 32 interrupts now supported
* Bug 377 fixed: Level triggered interrupts now work correctly
* Bug 378 fixed: xterm UART now works with RSP
* Bug 379 fixed: RSP performance improved
* Bug 380 fixed: GDB 6.8 stepi now works through Or1ksim JTAG interface
* Bug 398 fixed: Lack of support for LEE bit in SR documented
* Bug 415 fixed: NPC behavior on writing optionally matches real HW
* Bug 418 fixed: All library up calls are host-endian

* Feature 395 added: Boot from 0xf0000000 now enabled.
* Feature 408 added: Image file may be NULL for or1ksim_init.
* Feature 410 added: RSP now clears sigval on unstalling the processor.
* Feature 417 added: Or1ksim prints out its version on startup.

New in release 0.3.0rc2
=======================

* A number of bug fixes
* Updates to user guide

New in release 0.3.0rc1
=======================

* Numerous bug fixes (see the OpenRISC tracker and the ChangeLog file)
* User Guide
* Consistent coding style and file naming throughout
* Support for external SystemC models

New in release 1.9 (old style numbering)
========================================

* support for binary COFF
* generation of verilog memory models (used when you want to run simulation
of OpenRISC processor cores)

New in release 1.2 (old style numbering)
========================================

* support for OR16 ISA

New in release 1.1 (old style numbering)
========================================

 * First release