z/OS V1R9.0 TSO/E Command Reference

TEST—AT SubcommandTEST—AT subcommand syntax►►ATaddress,:address( ▼ address ):address▼ ( subcommand )►►COUNT(integer)NODEFERDEFERNOTIFYNONOTIFY TITLE( 'text' )►◄TEST—AT subcommand operandsaddressspecifies a location that is to contain a breakpoint. The address must be on ahalfword boundary and contain a valid op code.address:addressspecifies a range of addresses that are to contain breakpoints. Each addressmust be on a halfword boundary. A breakpoint is established at each instructionbetween the two addresses. When a range of addresses is specified,assignment of breakpoints halts when a not valid instruction is encountered.(address)specifies several addresses that are to contain breakpoints. Each address mustbe on a halfword boundary. The list must be enclosed within parentheses, andthe addresses in the list must be separated by standard delimiters (one or moreblanks or a comma). A breakpoint is established at each address.For address, address:address, (address), specify address as:v An absolute addressv A symbolic addressv A relative addressv An indirect addressv An address expressionv A module name and entry name (separated by a period)v An entry name (preceded by a period).subcommandsspecifies one or more subcommands to be executed when the program isinterrupted at the indicated location. If you specify more than one subcommand,the subcommands must be separated by semicolons. The list cannot be longerthan 255 characters. If a CLIST is executed as part of the subcommand listthe results of the execution may not occur in the expected order.Note: If an OFF subcommand in the list removes the breakpoint for which a listis specified, all remaining subcommands in that list are ignored.COUNT(integer)specifies that processing is not to be halted at the breakpoint until it has beenencountered the specified number of times. This operand is directly applicableto program loop situations where an instruction is executed several times.Processing is halted each time the breakpoint has been encountered thenumber of times specified for the integer operand. The integer specified cannotexceed 65,535.Chapter 1. TSO/E commands and subcommands 297