110856 DUCM/DYC Version: V2b, December 1986 Submitted by: Chester Wilson, Charleville, Australia 4470 Operating System: RT-11 V5.2, TSX-PLUS V6.01 Source Language: MACRO-11 Hardware Required: MSCP controller for disk; for DY handler, RX03 controller (either SIGMA or DILOG). Keywords: Device Handlers Abstract: This is a distribution of large disk handlers for DU (MSCP) disks. Full source and documentation is included. These have been tested and work fine on Fujitsu Eagles running TSX-PLUS Version 6.01. A mapped RX03 floppy disk handler is included as well, if you want it. It requires a SIGMA or DILOG RX03 controller. If run as a program, it allows you to format disks, requiring no privileges under TSX-PLUS. There are four files on this disk: the abstract (ABSTRA.CT), the file (READ.ME) and two logical disk files DUCM.DSK and DYC.DSK. These contain the distributions for the large MSCP handlers and for the mapped DY handler respectively. Please read DUCM.DOC to find out what to do. It consists of three manuals, a basic one and the full ones for DUCM and WA. You do not have to read the full ones to be able to use these handlers. DUCM.DIS and DYC.DIS give a sort of overview of the contents of each of the logical disks (on DUCM.DSK and DYC.DSK respectively). They are the command files used to create this distribution. This version has fixed an occasional data corruption problem which occurred rarely on heavily loaded and heavily swapping systems. (This problem occurred with the version of DUCM in the 1986 Australian SIG Tape.) Enhancements have been made to previous versions, especially in terms of setting up a handler for a particular system from another system. PROBLEM: TSX can do all sorts of odd things (like crash jobs with "Kernel Mode Trap in TSX", or lose a queue element) if you use the SET CACHE command while there are active jobs. This appears to be a TSX bug. Reserve this instruction for times when the system is quiet! Changes and Improvements: Bug fix, considerable enhancements for setting up. Restrictions: Extensions for large MSCP disks require TSX-PLUS & a Q-bus system. Media (Service Charge Code): One RX02 Diskette (LA) Format: RT-11, 600' Magnetic Tape (MC) Format: RT-11