The holy grail of PC soundcards include a few special devices. But one of them is surely the Gravis Ultrasound. It allowed mixing of 32 independent channels with (near) CD quality. This could be used for sound effects or music, and was particularly popular in the demo scene. But also game classics such as Jazz Jackrabbit, One Must Fall, Epic Pinball and Pinball Fantasies used the card to great effect. However today an original Ultrasound costs anywhere between 200-400 EUR, which is a bit too expensive in my opinion. So we try out a cheap homebrew clone! Meet the GUSar lite!
In 2019 Sam Demeulemeester (he’s actually Belgian, although I say French in the video) did a Kickstarter for the ATX2AT smart adapter. It allows you to safely attach a modern ATX PSU to a retro mainboard with AT connectors. That is your precious 286, 386 or higher will now be safe from overcurrents due to wrongly inserted CPUs, broken expansion cards, failing tantalum capacitors or rogue power supplies. It might not save the world, but it will probably save your valuable retro PC. I already lost two precious mainboards and am glad to have finally received the ATX2AT smart adapter!
There are two kinds of soldering PCBs: through hole and SMD. Through hole uses components with leads, which are threaded through holes (hence the name) in the PCB and then fixed to the PCB with solder. SMD uses Surface Mounted components. That is, very miniaturized components that are soldered onto the surface of the PCB, without using leads.
Due to the small size of the components it is at first much harder to solder than for classic through hole parts. To save you from the misfortunes of failed projects, there are practice kits available. We will assemble one such example today and I will try to teach you the basics of SMD soldering as well as some more advanced tricks.
The Innovation SSI-2001 was a very early PC sound card which appeared roughly during the release period of the Adlib. It was supported only by a handful of games and disappeared very quickly from the market. What makes it notable is the fact that it used the MOS6581 also known as the SID as its core. This chip was better known as the chip that drove the Commodore 64’s sound. Hence this card is particularly interesting. Early this year I hand soldered a replica of this card, known as the Renovation SSI-2001. Today we want to test drive a couple of games and compare different SID implementations: An original MOS6581, a SwinSID nano and the ArmSID. Can the much cheaper emulated SIDs hold a candle to the expensive and ever rarer original in this setting? We also take a short stab at getting the SID to produce a tone using MS DOS QBasic!