Link to ARI Home Page Link to ARI Products Link to ARI Specialized Services Link to Online Ordering Information

DRX ISA Interface Board

DRA ISA Interface Board

     The DRX Interface is a general purpose digital plug-in board for IBM PC/XT or compatible computers with I/O connectors pin compatible with DEC's DRV 11 type interfaces. The board provides 16 bit data I/O, two control lines (CSR 0 and CSR 1), two status bits (Request A and Request B), two interrupt and interrupt enable controls. The purpose of the DRX-Interface is to replace older PDP-11 series computers with more advanced IBM PC's or compatibles without any additional hardware. The DRX board may be used for fast data transfer between PDP-11 and IBM PC computers. Since the IBM PC/XT has only an eight bit data bus, to transfer a 16 bit word in or out, it takes two instructions to complete the 16 bit data transfer. Two additional status bits monitor proper I/O connections (reversed connector or missing connection).

The DRA interface works the same as the DRX but is made for a 16 bit ISA bus.

Prices

in US dollars
  Domestic International
DRX $250.00 $313.00
DRA $280.00 $350.00

Contact Information