What's new in version 5.22

The current (August 2005) version is 5.22c.

If you are a licensed user you can get a free upgrade here.

Since version 5.22 (see below) only a few bugs where found and fixed. Mostly minor ones but one BIG one. The timing of the following instructions: ASLA, ASLB, ASRA, ASRB, CLC, CLI, CLRA, CLRB, CLV, COMA, COMB, DAA, DECA, DECB, INCA, INCB, LSLA, LSLB, LSRA, LSRB, NEGA, NEGB, ROLA, ROLB, RORA, RORB, SEC, SEI, SEV, TSTA, and TSTB was incorrect! All these instructions used 3 instead of 2 clockcycles. This bug was introduced in version 5.22. (Yes, I do use regression tests and yes, it hurts.) Thanks to Brandon Navra for sending me a BUG rapport.

Version 5.22 (March 2005)

Version 3.0 of gcc for 68HC11 included. It is based on Binutils 2.15, Gcc 3.3.5, and Newlib 1.12.0.
Version 1.62 of SciTE included.
New commands: SECP (SetEClockPeriod), PECP (PrintEClockPeriod, and PrintSimulatedTime (PST).
New options for serial transmitter and serial receiver windows.
Improved RESET and STOP.
Improved timing (all read and write operations now take place in the exact right clock cycle). I developed an expanded bus logger component which can be used as a logic analyser. I will publish this component soon.
Some minor bugs were solved.

Version 5.21c (September 2004)

Only some minor changes:

Fixed bug in Target Memory Dump (THRSim11 sometimes crashed when you tried to change ROM target memory).
Enhanced MT and MS commands (you can enter the startaddress and endaddress at the target command line now).
ET command added (to copy EEPROM from simulator to 68HC11 target). Very easy way to program EEPROM of 68HC11 (no position independent code needed).

Version 5.21 (August 2004)

High Level Language Debugging Support is more integrated with THRSim11.
Better integration with the external editor Scite.
GNU as assembler debugging support.
New dialog to create a GNU gcc .c or .cpp or as .s source file with an appropriate makefile and link script.
New commands: Edit, !<extern command>, CleanMemory, FillMemory, 4 different Verify commands, and Record.
New target custom window.
Bug in memory configuration program solved.
Some minor bugs were solved.
The helpfile is extended.

Version 5.20 (July 2004)

High Level Language Debugging Support is extended and made more stable.
Better target support.
Some minor bugs were solved.
The quick introduction in the helpfile is extended.

Version 5.10 (April 2004)

High Level Language Debugging Support is extended.

Version 5.01 (February 2004)

High Level Language Debugging Support is added.
external editor support.
Better target support.
Some minor bugs were solved.

Version 4.00 (June 2002)

THRSim11 can now communicate with your EVB or EVM target board or any other board running the BUFFALO monitor program.
All numbers can now also been shown in signed decimal and ASCII
There is a special memory configuration tool which you can download from http://www.hc11.demon.nl/thrsim11/thrsim11_memconfig.zip.
Listings can be printed now
There is now a warning when you use an uninitialized vector
Some minor bugs were solved.

Version 3.30 (September 2000)

Context sensitive HELP. Press F1 in any window or menu item and you get context sensitive help immeadiatly.
The Component Development Kit (CDK) is ported from Borland C++ 5.02 to Borland C++ Builder 5.0 and Visual C++ version 6.0. This new version of the THRSim11 CDK (version 3.0) is available online.
Some minor bugs were solved.

Version 3.20 (February 2000)

This was the first Win32 version.
We made numerous changes in the user interface and also in the simulator itself. We tried to simulate the 68HC11 microcontroller (even) more accurate. The most important addition is the Component Development Kit (CDK). With this CDK you can develop your own components which you can connect to the simulated 68HC11. You need Borland C++ 5.02 to use this framework. If you want to develop your own components using C++ Builder or Visual C++ you will need a newer version (3.0) of the CDK. You can find the CDK (version 2.0) in the directory in which you install THRSim11 version 3.20 in the subdirectory CDK. The new CDK version 3.0 is available online.

Version 3.06 (March 1998)

This was the last Win16 (Windows 3.1) version. This version was capable of simulating not only the instruction set but also (almost) all 68HC11 on board peripherals: Timers, Pulse Accumulator, Serial I/O, ADC, and Parallel I/O.
The build in assembler (called THRAss11) is made compatible with the freeware 68HC11 Motorola assembler called as11. Click here for details.
A manual describing the THRAss11 is now available.
Some minor bugs were solved.

Version 1.00 (1994)

This was a DOS program which only could simulate the 68HC11 instruction set.