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This is my 8x8 array of leds and buttons. The LEDs are 2 color LEDs (which give a third color if you switch them on together) and as you can see, there were some errors in the matrix :)
The Z8-02 bondout is connected to a 28C16 EEPROM serving as the emulated ROM. (Typically a 2716 EPROM would have been used.) The 28C16 has been programmed with a copy of the masked ROM from the Z8671 Single Chip Interpreter BASIC/Debug. An async serial to USB adapter is connected to a laptop running Kermit.
A simple but inefficient BASIC program to find prime numbers has been entered, and the LIST command used to list it back out for verification. The program is RUN, then stopped after a few prime numbers have been found.
It's true, errors are the prettiest part of graphics programming.
This pretty garbage haunted my late nights for a while as I finished my (free) Photoshop PSD Extract/Recovery plugin, telegraphics.com.au/sw#psdrecover
DeBug Computer in the 2008 Nevada Day Parade
Visit us on the web www.debugcomputer.net/?utm_source=flickr&utm_medium=p...
in VIA GUGLIELMO REISS ROMOLI 237, TORINO (ITALIA) while Luca Lamorte, Massimo Valla, Cristina Fra and Carlo Alberto Licciardi were close to each others
Debug output of the procedural generated galaxy based on the source image, Yellow dots are Beacons and line are links, red dots system and green dots glades.
The integral counter did not work reliably, so I took it apart and plugged the modules individually into their connectors. The machine will operate without the time counter connected.
The faults were :
Dirty contacts on some of the modules, so that carry form that module to the next didn't occur.
One module was misadjusted and didn't count cleanly
A cracked track on the printer baseboard meaning the lowest 2 data driver boards didn't get the +18V supply. That caused some interesting problems with modules miscounting.