I revised the display routine of the original FLI mode, so it is now able to load a full format VFLI image file into RAM and display a window of roughly 1/3 horizontal width of it (72 instead of 208 pixels) in a panning view, on an unmodified VIC-20. A full memory expansion (+32K RAM) is required, though.
I included the Frangipani flowers as an example, but of course any other VFLI image file works as well - here's the viewer for download:
(screenshot - the stripes to the left and right show the border colour as it is updated on each raster)
With the VFLI mod, you can view these images in all their glory, at their full width of 208 pixels - so maybe this demo gives you an incentive to try out the mod.
Edit: A small update: I extended the viewer to a slide show, and SJLOAD can be used as option to speed up loading times on JiffyDOS-enabled drives (download):
Code: Select all
10 PRINT"{CLR}USE CRSR LEFT/RIGHT TOPAN IMAGE."
11 PRINT"{DOWN}SPACE: NEXT IMAGE."
12 PRINT"{DOWN}USE SJLOAD? Y/N":DN=PEEK(186)
13 GETA$:IFA$="Y"THENN$="SJ-B000":GOSUB24:SYS45056:GOTO15
14 IFA$<>"N"THEN13
15 N$="CODE":GOSUB24:S=6544:SYSS+3
16 READN$:IFN$=""THENEND
17 SYS57809(N$),DN,0:POKE780,0:POKE781,255:POKE782,86:SYS65493
18 X=0:SYSS+6:SYSS:SYSS+9,X
19 GETA$
20 IFA$=" "THENSYSS+12:GOTO16
21 IFA$="{RIGHT}"ANDX<17THENX=X+1:SYSS+9,X
22 IFA$="{LEFT}"ANDX>0THENX=X-1:SYSS+9,X
23 GOTO19
24 SYS57809(N$),DN,1:POKE780,0:SYS65493:RETURN
25 :
26 DATA "AUTUMN LEAVES","CREEK","DESERT LANDSCAPE","DOCK","FOREST","FOREST FLOWERS"
27 DATA "FRANGIPANI FLOWE","GARDEN","GREEN SEA TURTLE","HUMPBACK WHALE","ORYX ANTELOPE"
28 DATA "TOCO TOUCAN","TREE","WATERFALL","WINTER LEAVES",""
29 :
30 REM ** VFLI PANNING SLIDE SHOW WRITTEN 2013-01-27 BY MICHAEL KIRCHER