Welcome to my website!

new-icon.jpg Please check out some of my latest projects on how to:
"Build A Simple USB Digital Logic Analyzer"
New content as of 2 February 2016.

"Build A Simple Serial Interface Using VB6"
New content as of 7 February 2016.

 Please note: This web site is a work in progress. I plan to add once in a while some electronic projects and software programs I did.

Introduction
The following project is based on the RCA CDP1802 COSMAC Microprocessor.
Even if this microprocessor was introduced in early 1976, it is still one of my fondess microprocessors because, in 1979, one of my older brothers introduced me to the world of microcomputers and electronics..
He had purchased the Netronics ELFII kit and Giant Board.
So I saved up and bought the same kit also. Unfortunately, many years ago while cleaning out our basement, I decided to part with the kit, but I kept all chips.
In April 2011, based on my brother's Dec 1989 design, I decided to design and build a new ELF II.

NewELFII_01 (236K)

 NewELFII_02 (191K)
You may see the schematics here or you may download the PDFs down below.

In the early 1990's, I wrote a DOS based special 1802 Assembler.
In Nov 2011, I wrote a new and improved version in VB.NET.
You are welcome to try it out and let me know what you think of it.

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New 'ClickOnce' installation. Current version is 16 March 2013.
Help file will be installed also.

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This is the schematic of the New ELF II mainboard.


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These are the ALTERA files used to program the ALTERA chip.

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This is the ALTERA PLD schematic of the New ELF II.
1802ELFSim Web Page Link.
Please check out my 1802 simulator program called 1802ELFSim.
Contact Info: marcpic13@yahoo.com

Access to this page since 2 Dec 2011: 000051CCh