Model 422 | STD to ISA Bus Adapter

Features

  • Connects STDbus backplane to an ISA slot in a desktop PC
  • Parallel RS-422 bus provides high noise immunity
  • Supplied with 1 meter interconnecting cables, STD and ISA boards
  • Low Cost
  • Decodes 8-bit address

Description

The 422 is a Legacy product and is not recommended for new designs. The lead time for the 422 may be as long as 12 weeks and may require a minimum quantity order. Please call for availability.

The 422 is a bus-to-bus adapter that extends the ISA bus of a PC to a card rack of STD bus I/O boards. It has three parts: an ISA board, and STD board, and a set of flat cables to connect the two boards. The 422 makes the STD board appear as additional ISA boards in a PC.

Address Decoding

The ISA board decodes the high 8-bits of the address bus. All STD bus I/O boards are mapped into a 256-address window in the ISA I/O space. The standard address range for this window is OXO100 to OXO1FF. The window may changed via a PLD on the ISA card.

Documentation

File Version Type Size Last Updated
Model 422 Manualn/aPDF42 KB19 Apr 2011

Prices

Model Description Qty 1 Qty 2-9
422STD to ISA Bus Adapter$180$N/A