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--- schematics:snes_apu_on_pc [2005/12/28 10:25] – 71.52.46.199
+++ schematics:snes_apu_on_pc [2019/08/27 20:45] (current) – external edit 127.0.0.1
@@ Line 20: / Line 20: @@
 [[APU pinout]]
 ==== Software ====
-I first tried using CaitSith2 software, but it did not work. By looking at the signals with an oscilloscope, I deduced that the computer did not wait long enough for the logic levels to settle(rising was slow, this is probably due to the way my parallel port is designed). Fortunately, the source code was available. Adding small delays at the right places made it work.
-The user interface is written in VB, and the low level parts are in C/C++ in a separate dll. I had to recompile the dll to add the deleays. If you get errors such as "Error Loading SPC", try my dll after confirming that everything is wired correctly.
 I first tried using CaitSith2 software, but it did not work. By looking at the signals with an oscilloscope, I deduced that the computer did not wait long enough for the logic levels to settle(rising was slow, this is probably due to the way my parallel port is designed). Fortunately, the source code was available. Adding small delays at the right places made it work.