El Vic20 en modo nativo ofrece 22 columnas x 23 filas, en un formato de 8 X 8 pixels.
He visto que hay programas que lo que hacen es colocar un driver para que el VIC20 pueda visualizar 40 columnas.
Y tengo la solución, una de ellas porque hay varias.
lemonade.zip
Fat40 Demo.prg 1996-11-10 3918
40 column emulators for the VIC-20.
http://www.zimmers.net/anonftp/pub/cbm/vic20/utilities/8k/index.html
Finalmente he encontrado esta web:
http://sleepingelephant.com/denial/wiki/index.php?title=40_and_80_column_boards
Varias expansiones fueron diseñadas para el Vic20, incoroporando 30 y 80 columnas.
Introduction to 40 and 80 column boards for the VIC-20
The VIC-20 was popular but suffered stigma among "serious" computer users (i.e. programmers & researchers) because of its 22-column display, which they felt was too limiting. To remedy this several third party companies released display boards which plugged into the VIC-20's expansion port, thereby giving it the ability to display 40 or 80 columns of text at once.
VTE-40
Vendor: MSD, Inc.
Software: 4 KB terminal program (40 column screen)
MR 40/80
MC 6845
Video Pak Data 20
Includes 16K, needs extra power supply.
Esta es la paleta de colores del Vic20:
Referencias:
http://sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?t=4140&postdays=0&postorder=asc&start=30
http://www.nightfallcrew.com
http://sleepingelephant.com/ipw-web/bulletin/bb/viewtopic.php?t=4140&start=12
http://www.nightfallcrew.com/?s=40+columns