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Interesting project. A regular NES controller is read out by using a parallel in, serial out shift register. One button is read at a time. It also has support for 2-3 controllers on one port, each with a separate data line.There's a common clock line that clocks all the 2-3 controllers that may be connected to one port.

It seems from the chips on the board that this corresponding clock line is used to increment a 4017 decade counter. A decade counter is a type counter that sets one output pin high at a time, incrented by a clock signal. it can cycle through ten positions. Each position would then select a segment of the keyboard. This is what the 9 diodes are for. Each segment selector is connected to a segment of 8 keys. Those 8 keys are probably further broken down into 2 groups of 4, selectable by an output, so you're reading 4*9=36 keys at a time.

All of this might be possible to achieve using two controller ports on a NES. The NES controller port is a bit more crude than the Famicom one. Another option is to hook up the Famicom to an Arduino, and invent a serial communication protocol to be used over the NES controller port. Of course, this could expanded to work with a Gameboy or anything you like. BTW, if anyone wants to send me a Famicom keyboard for experimentation, I'd be happy to.

Shop's closed. Go make some music and come back next month.

There was a discussion about the lack of funding on 8bc's Facebook page but it seems to be gone now. Instead there's this: https://www.facebook.com/groups/8bitcol … 740154057/
The site went down exactly 1 month after that was posted, so that's probably the reason. In other words, donate if you want to see the site again.

Pft, donate your ciggies to trash80 instead.

Renoise's groove setting is slightly different and slightly less powerful than LSDj's. And also mislabeled as far as I can tell.
Where it says 1&2, it should really say 2&3.
Where it says 2&3, it should really say 4&5.
And 3&4, the last slider, should really be called 6&7.
I should actually file a bug report about this.

What they do is to control the shuffle between a pair of steps in the sequencer. This is why I believe they are mislabeled. What's more, Renoise's groove function can only affect the odd (i.e. second) step of the selected pair by delaying it. You can't do inverse shuffle like in LSDj, where the second step is played earlier than it normally would have been. Also, this means that you can't do shuffle over multiple steps, say you have notes on steps 0, 2, 4 and 6. No way to do it using the groove function, whereas LSDj could do it with something like a 7/7, 5/5 groove or whatever. (See my article on ticks and grooves in LSDj) Or put differently, Renoise can only swing 16th notes or whatever your LPB setting dictates that the smallest interval is.

What this translates to is that an LSDj groove can be translated to a Renoise groove if...
1) the LSDj groove has multiple pairs, each step must be equally long if you want to be able to to translate it precisely. 7/7, 5/5 (used for 1/8 note swing) wouldn't work since one pair is 14 ticks long and the other is 10 ticks long.
2) the LSDj swing value is >=50%.

If those conditions are true, you can take the percentage in LSDj and calculate the corresponding Renoise groove with the formula Renoise_groove=(LSDj_groove-50)*2. In other words, you take the 50%-100% range and scale it to the full 0%-100% range, if that makes sense.

LSDj's grooves are variable length, but Renoise has a fixed length of 4 groove patterns, or 8 sequencer steps, so if your LSDj groove is only two steps, you need to repeat it across all 4 sliders. By default, the groove presets will contain progressive settings for all the 4 sliders. 1=all 0%, 6=all 50% and 10=all 90%.

So for example, to convert the simple LSDj groove 8/4, you first look what the percentage in LSDj is, which is 66%. 66-50=16; 2*16=32. So you need to change all of Renoise's sliders to 32%. You might that 30% is close enough and just click the default preset 4.

Hope I made sense for once.

Look at the bottom pic here:

http://web.archive.org/web/200303101523 … ews090.htm

You can see a picture of the transparent version of the unit at the bottom, which reveals some of the front PCB in all its lo-fi glory.

Could you please run a few tests for me?

http://blargg.parodius.com/gb-tests/

Not the GBC ones obviously. Only the main ROM in each zip. (Not the singles to start with.) Save the SRAM after each ROM. It contains a log of the test. If you two have different versions of the hardware, and even if you don't, I'd like you both to run the tests. Hi-res images of the insides would be nice too.