the coprocessor to a Weitek 3172 and installed a new SCSI controller. The SPARCstation IPC (Sun 4/40) is a version of the SPARCstation 1+ in a lunchbox style case and onboard video. The SPARCstation SLC (Sun 4/20) is a version of the SPARCstation 1+ built into a monitor cabinet. The SPARCstation 2 (Sun 4/75) is the machine's successor and was released in November 1990. References External links SUN NVRAM FAQ Sun workstations SPARC microprocessor products