Description
The B500 was never released, though the later 505 and 510 models were announced in Europe. The 256K 520 never emerged. Not certain how many sold or when it was discontinued. Probably never released in the States. Based on the use of the same part numbers in the B128/600 series, according to Ullrich, the B500 is likely an early name or incarnation of the 600 design.
