Parallel Port I/O Schematic

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This message was posted by chn, posted on October 27, 2001 at 15:39:46 coming from 217.83.99
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Hi there again,

I've built a parallel port version of the device that's used to program my DIY copier cart. Here are some scans:
http://home.t-online.de/home/chrisnowak/pio_f.jpg
http://home.t-online.de/home/chrisnowak/pio_b.jpg

And I had some time to draw the schematic on the computer:
http://home.t-online.de/home/chrisnowak/pio.gif

I hope this sketch looks ok.
Here is a collection of important datasheets:
http://home.t-online.de/home/chrisnowak/datasheets.zip

I managed to transfer ROMs through this cart at a speed of about 20kbytes/s, so a whole 32MBit SNES game takes 3.5 minutes and a 32MBit Genesis game 1.75 minutes.
The next schematic to come will be of the actual RAM cart.

I'm afraid some knowledge is necessary to read the schematic, but if there're any questions, then ask. Questions will help me writing a description for the whole project. My eMail address is cnowak at kdt dot de.

Ciau,
/chn


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