8085 Microprocessor Projects
System Interface for 8085 SBC rev 1
The System Interface provides some important functions to the 8085 SBC rev 1, as well as a prototyping area.
8085 SBC rev 1 Reprise
I wanted to use the Intel 8085 in an upcoming project, and decided to clean up the original 8085 SBC rev 1 and put it to use!
Certek SBC85-2 Control Computer
I bought two of these Certek SBC85-2 boards from an equipment reseller we use. They're basically Intel's three-chip computer implementation from the MCS-85 manual, but use a 2716 type EPROM instead of an 8755A.
8085 Single Board Computer Revision 3
A third revision of the 8085 SBC! This revision had been planned for a long time, started once, abandoned, and finally restarted as a workshop class for VCF East XIII (May 2018). This SBC adopts a larger format, a new expansion bus, and is truly a single-board computer -- everything required for basic operation is onboard, just add a power supply and terminal. No add-on I/O board required.
A Multi-IO Board for the 8085 SBC
Since the 8085 SBC was designed to be expanded, the first step was in building an I/O board. This board includes an Intel 8255 PIA for parallel I/O and Zilog 8530 SCC for dual serial channels. With the Glitch Works Monitor, it provides a basic, usable 8085 system.
Intel SDK-85 Checkout and Cleanup
The Intel SDK-85 is the official Intel 8085 development system for the evaluation of MCS-85 family parts. I finally found one in reasonable shape for a decent price, cleaned it up, and brought it back into service.
8085 Single Board Computer Revision 2
The 8085 SBC has been revised, now including 64K of memory devices on-board, a cleaner layout, thicker traces, a few more expansion bus signals, and corner mounting holes!
Scrolling LED Displsy
Interfacing a PDSP-1881 LED character display with the 8085 SBC. I wrote software to scroll a message across the display for the 2010 Maker Faire in NYC, utilizing a circular array and FIFO.
Building an 8085 Single Board Computer
Designing and building an 8085-bases single board computer, then turning it into a proper etched PCB! This page documents its construction and testing.