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

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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

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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

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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

AVR

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

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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

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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

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