ATM18 BASIC Computer
ATM18 simulates vintage home computers
Published in issue 395, November 2009
The constantly escalating processor power of today’s PCs makes it a doddle to simulate another computer in software without the user even noticing any difference. Our ATM18 is a feeble performer by comparison but it still does a fine job if all you need is a small BASIC computer. So cast aside all longings for stylish graphics and lavish sound capabilities and get back to basics with this fabulous retro machine. Not that it skimps on essentials though; it features a serial interface, an EEPROM connection for saving programs and a couple of I/O lines. Everything you need in fact!
• BASIC computer implemented in (AVR) software
• Program Editor with 20 lines of code and maximum of 25 usable characters
• 1 program in internal Flash memory
• 26 variables each of 1 byte
• Graphic output via phono socket
• Single-channel audio output (notes in 1 timbre + noise) with envelope curve
• Serial RS-232 interface (1200 baud)
• 4 Port pins deployable as I/O and analogue inputs
• Interface for EEPROM (24C16) for 4 saved programs
• Upload/download of programs via serial interface
Click below to download a PDF copy of this article from Elektor magazine.
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.