Subject: Re: Problems due to PMAG-C support with PMAGB-BA in 1.4B
To: None <>
From: Toru Nishimura <>
List: port-pmax
Date: 08/06/1999 18:44:40
>> (and the reboot-on-CTRL-ALT-Backspace braindamage) fixed.
> reboot-on-CTRL-ALT-Backspace?!?

Halt interrupt signal is posted to MIPS processor on CTL-ALT-<X
combination.  That's the feature of Personal DECstation implemented by
underlaying hardware machinary with ACCESS.bus. 

'ULTRIX and UWS Version 4.3 Release Notes' says on page 2-6;

	2.5.3 Keyboard and Mouse Behavior with SERIAL.bus

		... snipped ...
	- Pressing Ctrl/ALt/Del cause the machine to be reset (as if you
	pushed a reset button) whenever the machine determines it is hung.
	Otherwise, pressing Ctrl/Alt/Del cause a Ctrl/x to be generated.  This
	is expected behavior. 

	- Pressing Ctrl/Alt/Ret cause the machine to be immediately halted,
	the current PC to be displayed, and a return of control the ROM
	console.  This is the expected behavior. 
		... snipped ...

It'd be reasonable for NetBSD/pmax to implement ULTRIX behavior as
precisely as possible, if ever. 

Tohru Nishimura