X and RTG
X runs on the display card that /etc/display names, started by xstart. See xstart(1),
display(4) and display.d(4).
Starting X
As root on the console:
xstart
xstart finds the card (with card auto, the first one that answers, the Amiga's own display
last), checks the mode, and starts the X server and your session. Another mode for this session
only: xstart 800x600; it must be one of the card's modes. xstart -n shows what it would run and
any mistake in /etc/display, and runs nothing.
The first-boot question about X is for the A2410 colour card: answer n.
On the Z3660
The z3660rtg driver package brings the card's file, /etc/display.d/z3660: the server
/opt/amix/X11R6/bin/Xzz9000 (from X11R6.3), the modes 1024x768 (the first), 640x480, 800x600,
1280x720, 1280x800, 1280x1024 and 1920x1080, in 16-bit colour only. The server comes only with
the x11r6.3 package: without it, as on a standard install, xstart uses the Amiga's own display.
X on the Z3660 is not yet tested on 1.1.
On the Amiga's own display
Without an RTG card, xstart uses the Amiga's own display with the original X11R4 server, as far
as that server goes. This is the 68030 image's display.
Your session
xstart runs the first of ~/.xsession, ~/.xinitrc, the session in /etc/display, and the
system's default session, which opens an xterm and a window manager (twm). Root's own
.xinitrc, written at the first boot, starts OPEN LOOK.
The X11R6.3 package
X11R6.3 brings the Xzz9000 server for the Z3660, twm, xterm, xclock, xdm, the usual X
tools and the misc, 75dpi and 100dpi fonts, under /opt/amix/X11R6. It needs a ufs root, and a
floating-point unit for full speed: on a 68LC060, X runs through the kernel's floating-point
emulation, slowly, and that is untested on 1.1 (acknowledgements).
It is the x11r6.3 package: the install CD's x11 set and the network install's full set
install it; on any other system, apkg install x11r6.3.
A graphical login at boot
start xdm in /etc/display starts X11R6.3's xdm at boot. display=no in /etc/rc.conf keeps
it off whatever /etc/display says.
Not yet tested on 1.1 hardware.