AC37 High-Speed Communication Adapter Card
AC37: IBM AT TO REMOTE BUS ADAPTER CARD
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OPTION JUMPERS
Option jumper 0 selects the AC37’s operation mode. Typically, mode 0 is used when data is received in the
communications buffer on a character by character basis. Mode 0 enables the AC37 to function like any standard
serial COM port (16,550 UART, emulation mode 0). Mode 1 is used when a complete data response is received and
ready in the communication buffer.
Remove jumper 0 to set the AC37 to mode 0 for connections to Mistic I/O bricks. If you are using the AC37 with
Mistic MMI or Cyrano to a Mistic controller, install jumper 0. This sets the AC37 to mode 1. For more about the
option jumpers, see the “Modes of Operation” section.
Option jumper 1 is reserved for future use.
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