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- Newsgroups: comp.robotics
- Path: sparky!uunet!cs.utexas.edu!usc!snorkelwacker.mit.edu!news.media.mit.edu!fredm
- From: fredm@media.mit.edu (Fred G Martin)
- Subject: Re: Miniboard 2.0 & NMI F68HC11
- Message-ID: <1992Aug27.010906.1515@news.media.mit.edu>
- Keywords: Miniboard
- Sender: news@news.media.mit.edu (USENET News System)
- Organization: MIT Media Laboratory
- References: <1992Aug26.031407.15453@panix.com> <1992Aug26.140433.18849@news.media.mit.edu> <1992Aug26.192907.10931@aio.jsc.nasa.gov>
- Date: Thu, 27 Aug 1992 01:09:06 GMT
- Lines: 60
-
- In article <1992Aug26.192907.10931@aio.jsc.nasa.gov>
- poirot@widget.jsc.nasa.gov (Daniel Poirot) writes:
-
- >I have two Motorola M68HC11EVBU boards that have 68HC11E9 chips. I can
- >get PCBUG11 to work with them if I disable the onboard BUFFALO ROM and
- >reset into Bootstrap Mode. I have been trying to get DL, MON and IC to
- >work with the EVBU with no success. I assume that this has to do with
- >the serial line echo weirdness mentioned above?
-
- No, it doesn't have to do with that.
-
- >Are there configuration mods to your programs to disable the
- >requirement for echo? Do I need to re-compile the programs?
-
- DL and MON should work with any 6811 system. They both have a flag to
- specify that they are communicating with a hardware-echo serial line
- (this is not the default however) but you wouldn't want this for the
- EVBU board, which presumably has a normal serial line. Type "DL
- -HELP" or "MON -HELP" for a synopsis of command-line flags.
-
- Are you sure that you are booting the EVBU in bootstrap mode? If so,
- what are you trying to download with DL? MON might be easier to get
- working at first; it lets you peek and poke into memory after starting
- up.
-
- > Do the E9 parts have the right amount of RAM/EEPROM for this to work
- > at all?
-
- This may or may not be clear from the documentation:
-
- DL and MON load a program into the 6811 internal RAM to get things
- going. All 6811's have this internal RAM (256 bytes or more), so the
- programs should work with any 6811 CPUs.
-
- IC (Interactive C) requires a 32K 6811 system to run. And, it
- requires a resident pseudo-code interpreter program running on the
- 6811. This program (the "pcode module") is about 10K of machine code
- and must be bootstrapped into the 6811 board using DL.
-
- If your memory configuration is other than 32K at the top of the 6811
- address space (the architecture of the board for which IC was
- designed), you will have to re-compile IC and re-assemble PCODE.ASM
- with some constants changed to get things to work. I'm sorry but I
- don't have the time to help people figure out how to do this. You
- will have to read the comments in the source code and figure it out
- for yourself.
-
- >Will the miniboard work with any of the 52 pin FN parts? I have
- >several of the 12K MC68HC711E9 chips. (Assuming I can program them)
-
- Yes, and the Mini Board 2.0 even breaks out the XIRQ line to pad (you
- apply the 12.5V programming voltage to this pin) for ease of
- programming.
-
- Sometime in the next few months I will be modifying the DLM downloader
- to allow downloads to these 12K EPROM chips (unless someone else does
- it first!).
-
- -Fred
-
-