Dashboard

The machine as it is now, built from widgets you place yourself. The heading names the configuration that is loaded — its title, its short name, and a MODIFIED badge when the live machine has drifted from what was saved.

Control panel

The lamps and switches of a PDP-11/03 bezel, and the only place the machine is started and stopped.

PWR OK	the logical power flag. Lit means the machine is switched on.
RUN	the CPU is executing — powered, with HALT released.
RESTART	momentary. Runs the processor again from its power-up vector.
HALT	two-position, like the front-panel toggle. Down stops the CPU; up releases it.
AUX ON/OFF	two-position. This is the power switch — it drives the logical DC power flag, and it is what brings up a machine that came up dark.

RESTART after a halt, not a power cycle

A power cycle does not release HALT, so a halted CPU comes back in ODT rather than running. Release HALT and press RESTART.

Front panel

The four activity LEDs and four DIP switches on the card itself.

The switches are read once, when the service starts, to choose which configuration to load — so changing them here shows you their position but does not reselect a machine. That takes a restart of the service. See Power-on DIP.

Console

The machine’s serial console as a terminal in the page. The badge says which line it is showing — TTYS2 for the real console of a CPU that has its own serial line, or the emulated DL11 channel otherwise.

Record captures the session to a file on the board: what the machine printed and what was typed at it, whoever typed it. The recordings are listed on System.

The line has no receive buffer

Typing at human speed is fine. Pasting is not: a burst of bytes overruns the single receive register and the guest sees only a few of them — ra(0,0,0)unix arrives as r,)x. Type it, or drive it from a script that paces each character on its echo.

Device widgets

One widget per device, each carrying the controls the real unit had. A device gets the widget its model calls for, and otherwise the one its class shares:

RL01/RL02	the drive’s own panel — LOAD, READY, FAULT, WRITE PROT, and the unit number
RA81 and other MSCP volumes	RUN/STOP, FAULT, READY, WRITE PROT, and the A/B port buttons
RX01/RX02	floppy drives
Tapes	load, unload and the write ring
Memory	the range claimed, out of the board’s own DDR
MRV11-D	the bootstrap ROM and which image it carries
DZV11, DHV11	the serial mux lines, and where each is reachable
DELQA, DEUNA	LINK and ACT lamps, the host interface and the station address
VCB01	the graphics framebuffer
Processors	an emulated CPU’s own state

The field under a drive is the image it holds — swapping a pack is editing that field.

Laying it out

Edit layout moves and resizes the widgets, with Save layout and Revert. The arrangement is stored with the configuration, so each machine remembers how you like to look at it, and an exported configuration carries its layout to whoever you send it to.

The cog beside it opens the configuration this dashboard is showing.