Re: console vs. debugger console

[Tim Newsham <newsham@uhunix.uhcc.Hawaii.Edu> writes:]

> How is the console handled when the kernel is compiled for
>debugging? Are two screens maintained and switched between?

The kernel debugger uses a spinloop watching for keystrokes and writes
directly to screen memory. Or, if kdb is configured for serial port
operation, it spins on the UART instead.

The cons2 server causes the kernel debugger to be entered when a ^Z is
typed; it saves the screen before calling the debugger, and restores it on
return.

                                                        Andy
Received on Thu Sep 15 04:37:43 1994