Back in the 1990s,
the 68HC11 my favorite small processor.
It's easy to program, and easy to use. I have since moved on to
the Atmel AVR and no longer have a working 68HC11 development
system.
I have an old page devoted to 68HC11 development on the Mac.
On the PC, I used MiniIDE; an excellent and free 68HC11 and 68HC12 assembler. I used WinDLM to download the generated S-record file to the Miniboard and this works well, although I had to cut out the first line in the S-record file to keep WinDLM from choking on it. Wookie is an excellent 68HC11 simulator.
As for development boards besides the Miniboard, I've used the PMB Electronics CPU_1A1 board, which is based on Motorola MC68HC11F1CFN3. It has 32K of static ram and 128K of flash, organized as 4 banks of 32K. It's a small board, and remarkably inexpensive.
I have an old page devoted to 68HC11 development on the Mac.
On the PC, I used MiniIDE; an excellent and free 68HC11 and 68HC12 assembler. I used WinDLM to download the generated S-record file to the Miniboard and this works well, although I had to cut out the first line in the S-record file to keep WinDLM from choking on it. Wookie is an excellent 68HC11 simulator.
As for development boards besides the Miniboard, I've used the PMB Electronics CPU_1A1 board, which is based on Motorola MC68HC11F1CFN3. It has 32K of static ram and 128K of flash, organized as 4 banks of 32K. It's a small board, and remarkably inexpensive.
Other 68HC11 related Web Sites
Roger's
Embedded
Microcontrollers Home Page has a
great compilation of 68HC11 links.
This is usually my first stop when I'm looking for links to 68HC11
software or hardware.
http://www.cs.uml.edu/~fredm/cher/ is an excellent source of 68HC11 related info, including code, PCB designs, etc. It's also the home of the Miniboard, the 6.270 board and DLM.
Fred's World is Fred Martin's Web page. It has info on the Miniboard, Handyboard and other 68HC11 and PIC projects.
Val Gretchev's Web page is full of excellent 68HC11 projects, and outstanding software.
http://www.cs.uml.edu/~fredm/cher/ is an excellent source of 68HC11 related info, including code, PCB designs, etc. It's also the home of the Miniboard, the 6.270 board and DLM.
Fred's World is Fred Martin's Web page. It has info on the Miniboard, Handyboard and other 68HC11 and PIC projects.
Val Gretchev's Web page is full of excellent 68HC11 projects, and outstanding software.
LCDTemper8
LCDTemper8 was a 68HC11 assembly language program that could detect up to 8 DS1820/DS18S20 sensors, read their ROM ID codes and display their temperatures on a 16x1 LCD display, or transmit the data out the serial port. It was designed to run on a 68HC811 with 2K of EEPROM running in Single Chip mode.This code has a serious bug calculating the 18S20 extended temperature that also caused errors in reading negative temperatures. Since I don't have a working 68HC11 development system, I can't fix them. LCDTemper, below, still works.
LCDTemper
LCDTemper was my first attempt at reading a single DS1820 device and displaying the temperature on an 16x1 LCD. It's old code; but it works.