Upgrades and support are no longer available. The 1650 is the final extension of the 1600 series HyperStore family. This board is a faster, ASIC, version of the 1616. Firmware version runs from v2.50 through v2.63. They are physically and operationally similar, but are limited to earlier feature levels.
Current information is found at the links below.
Limited quantities are available for support for previous design-ins, or special applications. Additional quantities are avilable by special order. The higher performance Intelli-Cache is recommended for new product design. Address and feature selection is by jumper. Although some have been sucessfully brought forward into Pentium class systems, this is very unusual.