![]() ![]() Here's the built in character set for ANSI/ASCII/based game constructs. Still despite the technical restrictions its nice to see how well each color mixes with others. Even though this example shows all possible combinations there are fewer graphics rendering setups where this will actually occur, instead the default standard of one shared background color is much more common to game rendering. This is based on a color test program I came across on the Denial VIC-20 forum by a guy named Mike used to test his S-video mod. Speaking of ANSI mode it has the highest potential for color output from a raster line standpoint as any available system RAM can aid the CPU in producing software based effects. This option only works as a terminal or ANSI mode with custom graphics requiring its own set of screen restrictions, I only mention it as it has the highest potential for actually using the border character space since its RAM needs are so low.Īnd then we have the PAL standard which is 232X280 at 29圆5 8 by 8 pixel characters with a default of 22X23 of actual screen space used most of the time. You can always use this as is and resample it to 800X600 to see what the final result will likely look like on an old CRT.įirst we have the NTSC standard which is 208X232 at 26X29 8 by 8 pixel characters but by default only 176X84 or 22X23 8 by 8 pixel characters is actually used most of the time. Screen Resolution:I know the shape is weird but I work at correcting that further down. Maximum of 8 on screen colors total.ġ:One background color used by all sprites and entire screen, any of the first 8 colors(0-7).Ģ:And one free color per sprite, any of the first 8 colors(0-7). In high-res mode each character cell (8X16) can have 2 colors. Maximum of 10 on screen colors total.ġ:One background color used by all sprites, any color from the palette.Ģ:One fixed color used in every single sprite, any color from the palette.ģ:The Overscan border color, any of the first 8 colors(0-7).Ĥ:And one free color per sprite, any of the first 8 colors(0-7). In multicolor mode each character cell (4X16) can have 4 colors. ![]() Honestly how does one take something so simple and complicate it with a lot of extraneous words. Okay I actually sat down and tried to figure this out, this is better since I don't speak "Stereo Instruction". Depending on the results of a palette swap its possible actual alteration of the pixels will be necessary in some cases for the best results. The VIC-20 is similar to the C64 being from the same company Commodore so it has many of the same features of the C64 but lower in pixel and color resolution by a fair amount.Ī big thanks to Mike72 and everybody at the Denial forum for taking the time to make an RGB equivalent of the displayed colors seen on actual VIC-20s.Īs you can see it differs per region to a high enough degree that you'll have to palette swap and adjust your art to reflect these differences. *While one button will work with a variety of 9-pin controllers it will require an internal modification of the controllers circuits to get the maximum. Also you could have both players share the keyboard but you'll have to keep it simple since its not very wide. I'd say in general the easiest approach would be to give Player1 the joystick and Player2 the keyboard with Space as Fire most likely. *Unfortunately paddles won't work through the I/O port so 2 paddles maximum through the DE-9 joystick port, darn. L&R+2 action buttons for 2 players.(Platforming.) D-pad+4 action buttons for 1 player.(Genesis/Mega Drive would be a good choice.) Mike72 informs me there are 8 available I/Os supported through the User port which would allow for the following custom made gamepad options. I can't use the Start button but maybe I could use it for a mode switch or a Turbo setting depending on the level of circuit alteration. So a 3 button controller for one player is possible, I'm going to mod a Genesis/Mega Drive controller for this purpose. Okay so there are 2 lines in the Joystick port normally used by paddles which can be utilized as button lines for a custom controller. Has a single DE-9 game controller port so all Commodore, Genesis/Megadrive, Master System, and Atari controllers will work with it but only one button unmodified. Alright the VIC-20 was the precursor to the C64 which was both affordable for the time and had Captain Kirk AKA William Shatner as their spokesman. ![]()
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