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  JBug11 Version 5.2.1    Win32 Monitor/Debugger for 68HC11 MCU's

JBug11 is a monitor and debugger for developing assembly language programs on the Motorola 68HC11 series of micro-controllers (MCU).  It is designed to be used on a personal computer running one of the Microsoft Win32 operating systems, and to communicate with the micro-controller under test by means of an RS232 serial link from one of the PC’s serial communications ports.  As with Motorola’s own PCbug11, this program uses a Talker - a small program which remains resident on the micro-controller and which provides basic communication with the PC.  Its development was inspired by the difficulty of running PCbug11 on modern fast processors; and at the same time provide some of the features expected in a modern GUI environment, and one or two additional de-bugging tools.

Welcome to Version 5! Many, many changes from version 4 but hopefully the same look and feel. The main changes are:

Version 5 keeps the same command syntax, apart from some very minor changes (no 'ASM' command at present). Download the program here (813 KB). As before, this is supplied as a self-extracting installer file. After downloading, double click on the file which will run in a console box. You will be able to type in an installation folder if you don't want to accept the default C:\Program Files\JBug11.

Download the Manual (1.27 MB) here. Go here for the source code. I'm always happy to get your E-mail comments

Don't forget the user's forum, hosted on  http://groups.yahoo.com/group/Jbug11  Joining this forum is a good way to keep up to date with new versions, etc. which I will always anounce there.

Publishing History 
 

Version 5.2.1 (Oct 26, 2009) 1. New talker and overlay file for EPROM programming the MC68HC711D3
Version 5.2.0 (March 30, 2009) 1. External EEPROM writing capability extended
2. Improved reporting of errors in S19 record files
3. Color may be used to help differentiate ‘set’ bits in the output window display of the Register Display and Change command.
4. Revised action of the <Backspace> key in the terminal
5. Bug fix: It was possible for the terminal windows to fail to recognize newline character strings sent by the MCU
Version 5.1.5 (February 4, 2009) 1. Boot Script may now be initiated on opening the COM port (suits setups where the talker is in ROM)
2. Bug fix: Register information corrected for E9 chips
Version 5.1.4 (May 5, 2008) 1. Bug fix: Parameter substitution in macros
Version 5.1.3 (May 01, 2008) 1. Bug fix: Binary files could not be loaded to EEPROM.
2. Bug fix: Duplicate and Fill commands could misbehave in the 'Local' mode (minor problem)
Version 5.1.2 (September 14, 2007) 1. Bug fix: Progress bar failed to work correctly if an overlay was needed to load a S19 file
Version 5.1.1 (August 15, 2007) 1. Bug fix: Macro names were wrongly inserted by the drop-down menu adjacent to the 'Play' button.
2. 'CONFIG' command improved, and associated help topic revised.
Version 5.1.0 (April 27, 2007) 1. Code added to allow writing to indirectly-addressed memory, such as an SPI (I2C) serial Eeprom
Version 5.0.4 (March 20, 2007) 1. Bug fix: CCR did not display in the 'CPU Registers' panel
Version 5.0.3 (March 18, 2007) 1. Bug fix: Serial port communication rate incorrectly initialized when using a talker in external memory
2. Bug fix: Disassembly of BRCLR and similar instructions was incorrect
3. Bug fix: Play Macro failed because of spurious inclusion of an '&' character
4. Supplied K talker file rewritten to use a comms baud rate of 9600 with an 8 MHz crystal
Version 5.0.2 (September 20, 2006) 1. Automatic selection of the correct files in 'Settings' improved.
2. Automatic selection of baud rates
3. 'Ignore echo errors on write' added back in
4. Pre-written project files available for the MicroStamp11
5. Reporting of set BPRT bits in BPROT improved.
6. Version 5 Manual issued.
Version 5.0.1 (July 1, 2006) 1.  Bug fix: Could not open S19 format files that contained S0 (comment) lines - program went into an endless loop
2. Modify Memory command now launched by M as well as MM
3. Project file format slightly revised (previous files still accepted)
4. This revision appears to work OK with Win 98
Version 5.0.0  (April 22, 2006) First publishing of version 5

Page created: April 04, 2006.  Last updated October 26, 2009