The Altaids Computer (8085 SBC) Working and tested system, green solder mask.

Note: most of the electronic component in this SBC are NOS, but some may be previously used!

This project was inspired by David Hunter's wonderful work, thanks David :) Of course I made small changes based on what I had available and my preferences for the final version of the board.

In short:

• the board is slightly larger in size (100х80mm)
• ON-OFF slider switch added
• I've used real EPROM, not EEPROM or FLASH for a more vintage feel ;)
• on the board there is an option to put an EPROM type 2764 or 27128. With 27128, half can be used for David's original firmware, and the second half can be programmed with your own firmware (switchable with a jumper)
• and most importantly in my opinion - an expansion connector has been added.

What's included in this sale:

• assembled and tested SBC with EPROM 2764
• FT232-style USB to serial adapter
• 4-pin cable for connection between the board and the USB adapter
• 12-pin male header for the I/O port
• 12-pin female header for the I/O port

Hardware features:

• Intel 8085 microprocessor, It’s an improved version of the Intel 8080 that the Altair computer used. The 8085 runs off a single +5V supply and doesn’t require the support parts that the 8080 required
• a 4.9152 MHz crystal is used to generate a processor clock of 2.4576 MHz
• 8KB EPROM 2764 which contains the SBC firmware (Altaids Monitor v05, modified Palo Alto Tiny Basic v1.0, adapted Altair turnkey monitor TURMON) -8KB Static RAM 6264
• eight-bit I/O port
• 2400 baud software serial port
• to provide a serial interface for user interaction, an FTDI USB to +5V serial cable is used. The USB cable also provides the +5V power to the computer.