We’ve often written about the fabled sound chips of the past, and none is more heraded than the legendary SID chip which originally came in the Commodore 64! This particular piece is a SID Soundchip Interface, designed for the RC2014 giving rise to big low end basses, gleep-ing arpeggios and rich thick pad sounds.
The interface connects to a standard RC2014 slot and allows the Z80 to write to the registers of the SID chip. There is an interrupt generator added which can be set to generate at roughly 50/60/100Hz, in order to meet the frame rate of the Commodore 64. Send the outputted sound to your headphones or external device using the on-board stereo 3.5mm socket – though the SID outputs mono, it’ll be sent equally to both channels. Be aware that while this will make glorious chip music, there is currently no specific software available for the RC2014 to drive the interface; what better chall;enge to get great things going?!
You’ll find some things to help though, including Z80 code on github (originally for the SAM Coupe) for emulating the C64’s CPU to play .sid song files. This SID Soundchip interface for RC2014 is designed by Quazar who sell all manner of RC2014 and ZX Spectrum Next among many others from their headquarters in Edinburgh.