Technical information

Table 1–1 (Cont.): Console I/O Mode Control Characters

Character Action

Ctrl/R

Echoes <CR><LF>, followed by the current command line. Can be

used to improve the readability of a command line that has been

heavily edited.

Ctrl/S

Stops output to the console terminal until you enter

Ctrl/Q

. Not

echoed.

Ctrl/U

Echoes ^U<CR>. Entered, but otherwise ignored if typed on an

empty line.

The console accepts Console I/O mode commands up to 80 characters long.

Longer commands produce error messages. The character count does not

include rubouts, rubbed-out characters, or the <CR> at the end of the

command.

Two or more consecutive spaces and tabs are treated as a single space.

Leading and trailing spaces and tabs are ignored. You can place command

qualiﬁers after the command keyword or after any symbol or number in

the command.

All numbers (addresses, data, counts) are hexadecimal, but symbolic

are 0 through 9 and A through F. You can use uppercase and lowercase

letters in hexadecimal numbers (A through F) and commands.

The following symbols are qualiﬁer and argument conventions:

[ ] = an optional qualiﬁer or argument

{} = a required qualiﬁer or argument

1.4.2 Console I/O Mode Commands

Table 1–2 lists and describes the I/O mode commands. You can display the

list of commands by entering HELP at the console prompt (>>>).

For a complete explanation of how to use the commands, along with

information on qualiﬁers and arguments, refer to the KA660 CPU Technical

Manual (EK–KA660–TM).

1–6 VAX 4000 Model 200 Technical Information