sim> help set vt

VT device SET commands:

set VT CRT={VR14|VR17|VR48}   	CRT Type
set VT WIN=FULL|NORM          	WIN Type
set VT SCALE={1|2|4|8}        	Pixel Scale Factor
set VT HSPACE={NARROW|NORMAL} 	Horizontal Spacing
set VT VSPACE={TALL|NORMAL}   	Vertical Spacing
set VT ADDRESS=val            	Bus address
set VT VECTOR=val             	Interrupt vector
set VT AUTOCONFIGURE          	Enable autoconfiguration of address & vector
set VT ENABLE                 	Enables device VT
set VT DISABLE                	Disables device VT
set VT DEBUG                  	Enables debugging for device VT
set VT NODEBUG                	Disables debugging for device VT
set VT DEBUG=OPS;RRD;RWR;INT;STOP;LPEN;CHAR;NAME;VT11;TRACE;VMOU;VKEY;VCUR;VVID
                              	Enables specific debugging for device VT
set VT NODEBUG=OPS;RRD;RWR;INT;STOP;LPEN;CHAR;NAME;VT11;TRACE;VMOU;VKEY;VCUR;VVID
                              	Disables specific debugging for device VT


1. Window sizes with scale=1: VR14 1024x768, VR17 1024x1024, VR48 1024x1024
2. Win mode. FULL = use whole screen with no borders eg a 1024x768 monitor is perfect for a VR14. NORM = a normal window with a title and border.
3. Scale mode. These are division factors. ie with scale-2 and CRT=VR17 the window will be 512x512. Scale 4 and 8 are not very useful. (Then you can have a terminal on screen as well).
4. I hope the others are fairly obvious.
5. As we are using SDL2, the window is always on display :0 (the Pi). But, you can have a remote display with RealVNC ... not bad either!
6. The VS60 mode is selected with:
set vt crt=vr48
set vt scale=1
set vs60 enable
set vs60 vector=320
This can be used with RT11/Lunar lander as well but, I haven't managed to find any VS60 specific software as yet.
Try it, the phosphor setting is quite pretty!
5. I have a build of the Fortran graphic libraries for RT11 and RSX11. If anyone want a copy, let me know. (See http://bitsavers.trailing-edge.com/pdf/dec/graphics/VT11/FtnGfxPkg_FortranRef.pdf) (This was really hard, ODT and everything!)