While specific requirements vary by revision, R20.x software generally runs on modern Windows environments:
: Note that this version phased out support for older parallel port adapters (DS1410E) on newer 64-bit operating systems. astro 25 portable depot r20.01.00.zip
Deep Dive into ASTRO 25 Portable Depot R20.01.00.zip – The Gatekeeper for Legacy Mission-Critical Radios While specific requirements vary by revision, R20