Category Archives: Digital

Everything and anything related to digital electronics

…and then there were two. Correction, four.

Posted on 2008-12-08 by M. Eric Carr

The EET325 class is wrapping up this week, but not before I got Bill’s prototype Z80 core working with the original protoboard control panel. Not only that, but two of the students (Mike and Austin) have finished, working Z80s. So … Continue reading →

Posted in Digital, DrACo/Z80, Drexel, EET325 | Leave a comment

Single-board at last

Posted on 2008-11-11 by M. Eric Carr

To paraphrase Emperor Palpatine… “And now, witness the power of this fully ARMED and OPERATIONAL … Z80 computer!” OK, so running at the current 40kHz system clock, it’s got more milliamps than megaflops — but at least it’s running properly … Continue reading →

Posted in Digital, DrACo/Z80, Drexel, EET325 | Leave a comment

Z80 computer LED display

Posted on 2008-10-03 by M. Eric Carr

The Z80 computer now has its name in lights! (See video; I apologize in advance for the horrible low resolution and mp4 artifacts.) Dr. Rosen and I got approval to buy an Alpha 215R single-line LED display as a demo … Continue reading →

Posted in Digital, DrACo/Z80, Drexel, EET325 | Leave a comment

Much Ado About Nothing

Posted on 2008-09-28 by M. Eric Carr

Sometimes, nothing is exactly what you need. A specific amount of nothing, to be precise. Here is a delay library, written in assembly, for PIC microcontrollers running at 8MHZ. If you find it useful, please let me know. Share and … Continue reading →

Posted in Coding, Digital, PIC Microcontrollers | Leave a comment