ADDS Mentor 2000 - IMPORTANT

Hitting BREAK at the TIME= prompt locks up the system, much the same as I described when hitting it while logged-on. I can however get to this monitor by hitting BREAK shortly after pressing 'X' at the OPTIONS prompt ... The display looks exactly like you show I x.xxx (different numbers) ! There is also a 'TRAP' button on the front of the unit - I can hit it at any time to get to a different monitor. Here is a sample session showing what happens, and the commands known to that monitor: A D D S / A S D M E N T O R ADDS MENTOR DIAGNOSTIC ASSURANCE MONITOR RELEASE 1.2 Copyright (c) 1984 Applied Digital Data Systems Inc. EPIC Test - Passed 00:00:00 RAM Test - 00:00:01 Command 0>e d 9 COMM LINES 512K CORE OPTIONS [X,F,NX]= X SPOOLER STARTED LINKING WORKSPACE FOR PROCESS 0 <<< Welcome to ADDS MENTOR >>> <<< 00:00:11 Release 2.4 Rev (8) 23 SEP 1988 >>> THIS IS THE COLD-START PROCEDURE ===> IF YOU ARE RECOVERING FROM A CRASH, TYPE IN 'RECOVER' WHEN YOU ARE ASKED TO INPUT THE TIME. 00:00:14 23 SEP 1988 COUNT SYSTEM-ERRORS 16 ITEMS COUNTED TIME = *** Here I hit 'TRAP' *** FLUSHING MEMORY. FLUSH COMPLETE * TRAP * BREAK AT 805022 00:00:06 .h 00:00:06 A - Set the CE card trap [ADDR] {DATA} {OPT}. B - Set/clear the breakpoint C - Compare memory data D - Display memory data E - Execute the Boot F - Fill memory with a constant G - Goto the current RPC H - Help the operator with a menu of commands I - Input/output from/to and I/O port J - Jump to the specified address K - L - LOAD or LOADHEX the Z8000 or MACZ hex file M - Move data in ram N - Next (single step) O - Set the Time of Day P - Toggle the printer enable Q - Quit the monitor, enter transparent mode R - Display/modify the user register values S - SEND a hex file to disk T - Test the specified ram U - Read the Disk V - Write the Disk W - Read the Tape X - Write the Tape Y - Backspace the Tape N records Z - Forward space the Tape N records 00:00:06 . Regards, Dave -- dave06a (at) Dave Dunfield dunfield (dot) Firmware development services & tools: www.dunfield.com com Collector of vintage computing equipment: http://www.parse.com/~ddunfield/museum/index.html