This post will be extended and improved while there is more info
As we sold many Digifiz Replica units on behalf of Duplux Production (https://www.instagram.com/duplux_production/) there are many common questions and corresponding answers should be. There will be some more info regarding the device.
As a Russian development, the original page of Digifiz Replica is on the Russian social network VK, here:
You can also order PCBs almost assembled using JLCPCB order files provided in the repository. New UltiSID is highly inspired by Kung Fu Flash – and commonly, it is a Kung Fu Flash with a special firmware(Kung Fu SID, included as a submodule)
By the way, I have 4 extra chips and I can send/sell them somewhere if someone wants to check them out. As it was declared initially, UltiSID is completely free and open-source even for commercial purposes (GPLv3 license) I will be happy if someone will improve the project or add some new functions to it. It still lacks paddles, but new hardware supports it. As well, there is an OpAmp on output cascade, and output is completely generated by DAC, not PWM as on SwinSID – which ensures smooth and good generation of sound. I still need some optimization of code.
There are no hard flaws as it was before on the previous revision of the hardware. It processes data and it is possible to read it back, it works stable.
I would also be happy for any donation: PayPal is unfortunately banned in Russia, as Russia resident I am unable to use it, even if I’m not in Russia actually(as it is) 0xeDc17cb23241eACe19DF3617291aa7d2d92E62DC – USDT/ETH ERC20 TKSPmVWoCgQky8umDUcR7oivJKNzAXueSB – USDT TRC20 0x77c411fdedc72b034432571ae9aee10330b72d6c – USDT BSC20 https://www.cgtrader.com/sgw32 – or buy something here(my 3d models of C64 for 3d printing)
You’ll not only know how to assemble & flash SwinSIDs, but how to do it almost automatically.
SwinSID is a microcontroller-based clone of the SID, the audio chip used in nearly all 8-bit Commodore computers in the 80s, and later in some chiptune synths like SIDStation. The original SID ( Sound Interface Device) was designed by the engineer Robert Yannes and produced by MOS Technology under the names MOS 6581 and MOS 8580 from the early 80’s to the early 90s. Despite the production of the original SIDs stopped years ago, you still can find spare units of unknown origin on some internet sales sites, but they are very expensive and usually have some of their parts damaged ( it is not strange to find units with malfunctioning filters or oscillators ).
Pinout of SID(and SwinSID too):
Here we’ll order boards that they will become partly(or fully) assembled.