vtserver, zrqch0

[Dennis Boone]

I've assembled a basic PDP-11/53ish machine from parts.  The CPU is
from a DECserver 550, converted back into an 11/53 by EPROM swaps.
It has an RQDX3 and cable management board, and a Seagate ST-251
(40 MB MFM) drive.  This is all installed in a BA213.

So far, I haven't managed to get a load device working.  I have an
RX50, but it seems unwilling to work.  I'm trying to format the disk.
Jonathan Engdahl describes a trick to bootstrap XXDP utilities using
vtserver:

	http://home.alltel.net/engdahl/xxdp.htm

Vtserver does its magic, ODT-ing in the loader, and transferring the
modified ZRQCH0 binary (from XXDP 2.5).  At this point, the machine
seems to hang:

	@p
	  Opened xboot.dd read-write
	 rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr EOF2

	45Boot from vt(0,0,0) at 0177560
	: vt(0,0,1)

	Opened ZRQCH0 read-write
	 rrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrrr EOF2
	Boot: bootdev=06401 bootcsr=0177560

I have to cycle power to regain control.

Help please.  Has anyone else ever tried this?  Thanks,

De