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DTACK is properly connected to the cartridge slot on all Genesis 3s.

I've tried the same post twice in this thread:

http://www.sega-16.com/forum/showthread.php?24749-What-is-this-Genesis-box-variant

Once, with a direct link, then again with a TinyURL re-direct....

Looks like the forum has metaphorically eaten my dollar. Time to re-post!:







It would appear that this thread on the subject went under the radar.

Demolition Man

On the contrary, see this thread.

That's why you quit? Why not just use initials or a fake name?

Indeed:

iCOV4aPY2Fo

Use the A/V port, the RF switch (on the console end) is likely damaged. Can you hear sound from the headphone jack?

1.) Low demand.
2.) Would require the user to disable the bios in their system(s).

Doin' the best I can.

You would need to make a 44-pin to 50-pin adapter in either case. In addition, if you use a Master System, it will need to have its' bios disabled.

MPR-12675 = REV00
MPR-12930 = REV01
MPR-12930A = REV02
MPR-12930B = REV03

The Japanese Mega-CD library: first-party & third-party.

'IC202' is what you're looking for. Its' audio outputs are immediately routed through a Sallen-Key low-pass filter with a ~8KHz cutoff (see 'IC203B' & 'C'). There are several filters after that as...

Now that I've done some testing...



... this solution seems to work nicely.



Do both of these ~3.58MHz clocks share the same triangular waveform?

Excellent work, Jorge! I've updated the chart accordingly.



Is it really necessary to replicate VSync when all of the sync information is supplied to B14. VGA monitors don't need VSync when...

Looks like Hyperkin uploaded the sound clip that they couldn't demonstrate:

fnXjK0xLkTM

.

Why did you cut the output pins off of the YM2612!? You could've had a switch between the buffered YM3438 and YM2612 outputs.

Yes, but there are internal changes effecting the quality of the signal. Otherwise there wouldn't be a NTSC/PAL selection line (pin 32) on the encoder.

Anything with a 'vertical hold' knob (check the back of the set) will work.



It also adjusts the filters integrated within the video encoder. Since his 32X uses a fixed ~3.5795 MHz crystal, it...

Nice work! It looks to be a decent game of delayed gratification in the same class as 'Last Battle'. Folks always seem to judge games with only a few minutes play. Big mistake.

^No.

That's a different issue.

Thanks to the information provided in this thread, I can confirm that connecting a pull-up resistor rated at 10K ohms to DTACK fixes the system instability.