Looking for 68hc11

Started by xxx in comp.arch.embedded12 years ago 4 replies

I'm looking for some 68hc11 chips in PLCC package. Mainly 68hc811e2 Thanks Alessandro

I'm looking for some 68hc11 chips in PLCC package. Mainly 68hc811e2 Thanks Alessandro


old (1985) 68HC11 EVB schematics needed

Started by edic...@hotmail.com in comp.arch.embedded12 years ago 5 replies

In '98 I posted the following: ========================================= Richard Erlacher Sep 8 1998, 3:00 am Newsgroups:...

In '98 I posted the following: ========================================= Richard Erlacher Sep 8 1998, 3:00 am Newsgroups: comp.arch.embedded Date: 1998/09/08 Subject: 68HC11 EVB Schematics, etc. I have, after 10+ years, found that I've misplaced or lost my schematics for the ORIGINAL (1985) 68HC11 EVB . . . you know . . . the one they once sold for $68.11 to those willing to experime...


Help with communication between PC and 68HC11 board

Started by Anonymous in comp.arch.embedded12 years ago 9 replies

Hi to all: I'm just getting back into this stuff. I built and got working a 68HC11 board. I have two processors: a 68hc11A1FN and the...

Hi to all: I'm just getting back into this stuff. I built and got working a 68HC11 board. I have two processors: a 68hc11A1FN and the 68HC11E2F


68HC11 clocks

Started by Jeff Fox in comp.arch.embedded14 years ago 2 replies

In some literature about the 68HC11 I see a reference to an 8Mhz crystal and a 2MHz eClock. Instructions execute in a given number of clock...

In some literature about the 68HC11 I see a reference to an 8Mhz crystal and a 2MHz eClock. Instructions execute in a given number of clock cycles, but which clock? Best Wishes, Jeff Fox


Program LCD HD44780 with 68HC11 in Handyboard

Started by Anonymous in comp.arch.embedded10 years ago 2 replies

Hello, for a school project i need to program the Motorola 68HC11 to use the HD44780 LCD controller, and this must be done in C lang plus...

Hello, for a school project i need to program the Motorola 68HC11 to use the HD44780 LCD controller, and this must be done in C lang plus maybe a bit of assembly. The 68HC11 uC is embedded in a HandyBoard (www.handyboard.com). The Handyboard gives the following problem: The Handyboard has different modes, Expanded mode and Singe chip mode. In Expanded mode the peripheral databus is c...


68HC11 Asm - Hand Assembly

Started by Mickey in comp.arch.embedded13 years ago 4 replies

Hi, I am writing to ask if anyone knows how to hand assemble a simple 68HC11 program? My problem is getting the op code. I am using the...

Hi, I am writing to ask if anyone knows how to hand assemble a simple 68HC11 program? My problem is getting the op code. I am using the standard instruction set. I know that you have to count the number of CPU cycles for each instruction. Does anybody know of a good tutorial on this? Thanks, Mickey


Setting the RESET vector on a 68HC11A0

Started by hjar...@googlemail.com in comp.arch.embedded11 years ago 6 replies

Hello all, I am trying to "reverse engineer" some older 68HC11 based equipment. I got a hold of some nice circuit boards with general purpose...

Hello all, I am trying to "reverse engineer" some older 68HC11 based equipment. I got a hold of some nice circuit boards with general purpose I/O and since I liked working with 68HC11's some 10 years back I got nostalgic. Only thing is that these are 68HC11A0FN's and therefore without any programmable onboard ROM and there are a couple of things I am trying to figure out since I never deal...


Help with communication between PC and 68HC11 board

Started by Anonymous in comp.arch.embedded12 years ago 1 reply

Hi to all: I'm just getting back into this stuff. I built and had working a 68HC11 board. I have two processors: a 68hc11A1FN and...

Hi to all: I'm just getting back into this stuff. I built and had working a 68HC11 board. I have two processors: a 68hc11A1FN and the 68HC11E2FN. I take and replace each when I want to use a particular one. I had this thing working like a champ about 1 year ago, put it down, and can't get it to communicate with the PC. I know the chip is working because I programmed the E2FN and up...


jsr changing registers in 68hc11?

Started by Mr Dump in comp.arch.embedded11 years ago 3 replies

Hi All, I hope this is the right forum, I have a 68hc11 microcontroller, and im using BR to debug my buggy code (it has the Buffalo...

Hi All, I hope this is the right forum, I have a 68hc11 microcontroller, and im using BR to debug my buggy code (it has the Buffalo monitor) The gist of it is: I load numbers into registers and then jump to a subroutine, i check the numbers before and after the jump, but they have changed- any clues to what is happening? cheers, dt


newbie, sorta

Started by Scott McDonnell in comp.arch.embedded14 years ago 6 replies

Hello all, I am a second year "electronics technology" student who just finished a course in microprocessors. This was using a 68HC11 based...

Hello all, I am a second year "electronics technology" student who just finished a course in microprocessors. This was using a 68HC11 based trainer. We learned Machine Language programming, and I taught myself assembly language for the 68HC11. We also learned interfacing using a PIA. All this is great if I were to use a trainer for every project I ever do, but I would like to begin buildi...


Strange behaviour, I/O port, 68HC11

Started by bruce varley in comp.arch.embedded13 years ago 2 replies

Hello, This is probably becoming a legacy topic. I hope there's someone out there who can assist. According to the 68HC11 reference manual,...

Hello, This is probably becoming a legacy topic. I hope there's someone out there who can assist. According to the 68HC11 reference manual, Port A PA3-6 can be general purpose outputs, or driven by timer output compare functions. If one disables the latter then it should simply be a matter of writing to the PA register, $1000 to set the pin voltage. I find that that works fine for PA4...


Help, need help with an old 68hc11 assembler !!

Started by DennisB in comp.arch.embedded13 years ago 17 replies

Howdy, Hope somebody can help....... I'm working on a project with an old American Automation Inc 68HC11 assembler and linker, dating...

Howdy, Hope somebody can help....... I'm working on a project with an old American Automation Inc 68HC11 assembler and linker, dating back to 1988. AS68HC11.EXE and AALINK.EXE I tracked down the company, now American Arium, but they stopped supporting the product and 'threw out all the documentation', about four years ago. Arrgghhhh At any rate, I need the command line option...


mixing C and assembly

Started by Lax in comp.arch.embedded10 years ago 134 replies

Are there any situations where programming an embedded processor "requires" at least some assembly code? How about for AVR, MSP430, 68HC11,...

Are there any situations where programming an embedded processor "requires" at least some assembly code? How about for AVR, MSP430, 68HC11, 8051(Atmel)? Can these 4 microcontrollers be programmed fully in C without touching assembly (even interrupts and etc.)?


Debugging assembly

Started by rasega in comp.arch.embedded12 years ago 30 replies

Hi all, I'm writing some routine for a Motorola 68HC11, but it seems that debugging the code in assembler is a little bit difficult !! Please,...

Hi all, I'm writing some routine for a Motorola 68HC11, but it seems that debugging the code in assembler is a little bit difficult !! Please, what software do U suggest me to simplify this job ?? Assembling the code with asmhc11.exe give me back many errors, but not what this error are and where thery are !! Is there a way to know it ?? Thank U Ric


Look for a microprocessor trainer

Started by Anonymous in comp.arch.embedded12 years ago 6 replies

Hi to all: I'm looking for a microprocessor trainer that I can program in assembly language, maybe C, and having a usb connection. It would...

Hi to all: I'm looking for a microprocessor trainer that I can program in assembly language, maybe C, and having a usb connection. It would be nice to have a hex keypad on the board as well. I'm familiar with the 68hc11 and the Z80, 8085, etc...Maybe want to make a step up. I want to work with some of my students with this, and have the ability to tie circuits to it..Have a small bre...


68HC11 PORT B

Started by john in comp.arch.embedded12 years ago 13 replies

Hi, I am having problems with the port B. Its an output port and I am writing the whole port. My code is as follows ORG 2000 LDAA $#...

Hi, I am having problems with the port B. Its an output port and I am writing the whole port. My code is as follows ORG 2000 LDAA $# FF STAA $1004 Now, if I write 00 hex or FF to theport. The port is always floating. I tried pull ups and pull downs but no difference. Please advice. Thanks Regards John


HC11 Transistor Architecture

Started by harivj in comp.arch.embedded12 years ago 11 replies

Hai Is there anybody give me guidance about RTL implementation of the complete 68HC11. I am involved in design of one such at transistor level...

Hai Is there anybody give me guidance about RTL implementation of the complete 68HC11. I am involved in design of one such at transistor level and none of the book or online reference talk about pure hardware implementation. All I could see is how to program a HC11 but not how to build one. Any information in this regard would help. Thanks, Vijay


BUFFALO error messages

Started by mc in comp.arch.embedded11 years ago 4 replies

Greetings, I'm not very familiar with the Motorola 68HC11 but am teaching a course using it. What does it mean when BUFFALO gives an error...

Greetings, I'm not very familiar with the Motorola 68HC11 but am teaching a course using it. What does it mean when BUFFALO gives an error message such as "ROM 2000" or "ROM 1384"? I don't recall the circumstances under which the error was displayed (I'm working from old notes about what is wrong with some of our defective EVBUs). Easy to fix? Thanks!


ARM compiler

Started by TonyStarkPE in comp.arch.embedded4 years ago 22 replies

I'm trying to recreate a simple ARM compatible processor in a FPGA. I did one similar to the 68HC11 in my Digital Design course in school. But...

I'm trying to recreate a simple ARM compatible processor in a FPGA. I did one similar to the 68HC11 in my Digital Design course in school. But when we did the assembly language we had to hand assemble it as well and change the instructions to machine code ex. LDAA --> 0x43 (not a real opcode) Then we made all our instructions and data in hex into a file that represented a memory with Altera's Quar


need a board automotive

Started by dumike in comp.arch.embedded12 years ago 7 replies

Hello everyone, I'm not a regular here but it seems to be the right place to ask. I am working on a project for a student racing team and I...

Hello everyone, I'm not a regular here but it seems to be the right place to ask. I am working on a project for a student racing team and I have to design a control system for one of the parts. The system will have to accept a few inputs and control several motors based on the calculations. Sounds typical. I want to start off with an existing board based on 8051 or 68HC11/12. The prob...