Tag » Eeprom

PCB Hardware Testing - diagnostics and remedy

The last few days I have been investigating the reason(s) why my hardware does not seem to work.  There are a few software “modules” that are supposed to run “out of the box” via that particular author’s HEX file build.   2.051 kata lagi


PCB testing - No joy so far...

Since I built up the single PCB, I have started testing the hardware.  Of course, the hardware on this project is useless unless it has software to make it do something.   997 kata lagi


Arrival of PCB's.

Today, after 13 days of shipping time, the PCB’s for this project arrived.  They look good and I have no complaints about the quality of the boards.   580 kata lagi


Update: Investigation into Z80 real-time debugging on the AVR

I am still awaiting the arrival of the Z80 (and 8052 SBC) printed circuit boards.  In the meantime, the FatFS portion is at a point that I would like to implement and debug on actual hardware, so until the PCB’s arrive, that portion of the project sites “ 1.156 kata lagi


A minor fix on the PCB (after FAB submission)

Well, as Murphy would have it, I spotted a potential artwork change after I had already submitted the PCB artwork to the fabricator.

It happened like this; in looking to add some helpful links to this project’s posts, I found that there was a (more) “bug-free” version of the MCS-BASIC.   177 kata lagi


Creating the PCB for the 8052 SBC

The PCB is complete. It looks good. I was able to fit it all on a 3″ x 4″ board. I searched for some PCB vendors that would not charge me US$100 for a few boards and found one in particular ( 74 kata lagi


Design of the 8052 SBC

With the schematics finished, I set out to program the PLD for address decoding. I had ordered some ATMEL AT89S52’s off eBay. The ATMEL version of the 8052 has some extra features. 1.091 kata lagi