TRICONEX 3806E Output expansion card

SCSI Interface The MB87033/34 provides an 8-bit single-ended SCSI interface. It is routed to the metric backplane connector position P87. The termination is switch selectable (see “SW9-2” on page 42) and "TERMPWR" is supported. Note: TERMPWR is always supplied; if termination power is supplied externally by a source other than the APNbus connectors, the active termination is still maintained, although the APNbus may not be powered.

Power to the APN rack 

may be switched on when the board is correctly installed, the switches are in the correct positions, and the terminal is correctly configured and under power. Default boot procedure The setting of the 2 front-panel rotary switches defines the startup: whether VMEPROM or a user program is started. The monitor (VMEPROM) boots up automatically with the default setup of the rotary switches on the front panel. For the default boot procedure set both rotary switches to F. Note: The APNbus interface is configured to be used without any changes. The CPU board is configured as a system controller and arbiter, and the on-board 4-level arbiter is enabled and reacts on every bus request. This results in a default hardware setup which may conflict with other boards installed in the rack

Turning on the power Initially

 the green RUN LED will light up, and after one to three seconds the message "Wait until hard disk is up to speed" will be displayed. A few seconds later the VMEPROM banner should appear (see section below). The terminal is now at the user’s discretion. At this point, it is advised to make a few carriage returns, to obtain the question mark prompt.

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