Archive | December, 2015

ARP Pro Soloist & Pro/DGX ROMs available

The ARP Pro Soloist introduced in 1972 and continued through 1981 as the Pro/DGX featured selectable presets, which used 8 archaic ROM chips to control the routing of the signal path (filter resonance, vibrato, ADSR parameters, etc).  The ROM chip used was an Intersil IM5600, a 256 bit (!!) ROM that is long obsolete, and […]

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