110482 PL.MAC: A Write Only Device Handler for the IEEE-488 Interface Version: V1, May 1981 Submitted by: J. W. Docherty, Central Laboratories, New Zealand Operating System: MINC, RT-11 V3 or V4 Source Language: MACRO-11 Memory Required: 16KW Software Required: Uses V3 and V4 MACROS, could be adapted for V2. Hardware Required: IB-11 or IBV-11 IEEE-488 Interface, Plotter or other IEEE Device Keywords: Device Handlers, MINC/RT-11 Software, Plotting Abstract: This RT-11 device handler provides a means of writing to a "listen only" device on the IEEE-488 bus (IBV-11 or IB-11 interface). It was written specifically for use with the HP9872 plotter. PL.MAC may be used in conjunction with a modified version of the plotting programs available as the "MINC/BASIC and FORTRAN support for the H/P 9872A via IEEE-488 BUS", DECUS No. 11-427. Details are available from the author. The advantage of this handler as compared to the use of Digital Equipment Corporation's instrument bus subroutines is that it may be assembled for use with an XM monitor. Plot files may be created on disc without waiting for the actual plotting and normal RT-11 file transfer programs (e.g. QUEUE or PIP) may be used to actually plot the data. A SET Command is provided to enable the IEEE bus listener address to be changed. UNIBUS addresses and vectors may be changed by editing the source file. Restrictions: Restricts user to only one active device on IEEE bus, this device operating in "listen only" mode. The Handler was written for use with HP 9872 plotter. Media (Service Charge Code): One RX01 Diskette (KA) Format: RT-11, 600' Magnetic Tape (MA) Format: RT-11