Though I often use the Pseudo-Sam Assembler, this free assembler should be able to assemble all of the code examples found here. If you have difficulty using it with any of my code, let me know.
The AS31 documentation, derived from the original as31 man page is now available in html format. It still looks and feels like a unix man page, unfortunately.
This new distribution of AS31, the MCS-51(tm) family assembler, includes a linux binary, .c and .h files produced from yacc (for those who don't have a compatible yacc tool), a some object code produced by the assembler which can be used to check its output once installed, and an updated README file.
PAULMON1 was originally developed in the Fall of 1991 in about four weeks. The code has remained fixed, but my own needs have changed from project to project over the years. These changes, additional features, plus a major overhaul of the existing code was planned to be released as PAULMON2, and very well may still be, if I ever get some extra time to work on it.
You can customize PAULMON1. This form lets you specify the default location of your system's RAM memory, as well as setting up the baud rate so you won't be bothered by the automatic baud rate detection.
still working on these... maybe you would like to
make a suggestion
about which one I should do next when I get some time?
All this code is written and pretty well tested, the only
thing that's vapor is the html wrapping.
I've received some contributed works and email regarding other web sites, but I just haven't had time to look at them in detail. Rather than let them sit, this directory ought to get the at least a plaintext version on-line until I have some more time.
Maybe you can qualify for a
Free Sample.
It probably doesn't hurt to ask. They gave me a free sample which
I used to develop this in-circuit programmer. Since then I've
bought about 10 more chips at $3.30(US) each. I think I even told
them I was from a university and wouldn't be producing any commercial
products!
Please keep in mind that neither I nor Oregon State University represent Atmel or Marshall.
I have designed and built a simple programmer for this cool part which can reprogram it in-circuit. You place the 89C2051 in this board, and connect the board to your project's 20 pin socket with a ribbon cable. You can download code to the programmer, reprogram the Atmel chip, and then place the chip back into the circuit. Since it's Flash ROM, no UV erase step is required. You can reprogram and test your code without moving the chip between sockets. As well, the programmer supports an "echo-thru" mode, where the 89C2051's UART output is echoed to the terminal controlling the 89C2051 in-circuit programmer, but only while the 89C2051 is running in-circuit.
To get started now, the design is quite similar to the development board example above, with the addition of the following chips: 74HC00, CD4007, and four CD4066. The three unused AND gates in that example are used here. Two NPN and one PNP small-signal transistors are needed, as well as a 12 volt power supply for the programming voltage and 4000 series logic. Only one of the 82C55's is used, but one 82C55 is required. BETA Version 0.004 is now available, also in ZIP format. As well, BETA Version 0.003 is still available, but 0.004 is much easier to use.
Someday more reasonable documentation and a schematic of the required hardware will appear. For now, this beta release schematic is available for those who want to try to add the hardware support to an existing development board.
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