80x25ish text Mode Proof of Concept

[Deleted]

This is a proof-of-concept 80x25 text mode. Nothing clever. I converted a CGA ASCII font into 4x8 characters and left the right side blank since tiles are always 8x8. I shifted the second tile plane by 4 pixels. By interleaving the text on both planes it looks like one screen of 80x25 text.

This is a really dirty example due to:
* It's a hack of the full screen text enhanced MINIMAZE.BEX.
* I still don't fully get how to maniplulate palette right.
* No comments related to what this program is doing and why.
* Characters are NOT optimized in any way. Could be edited for legibility.

An advanced hack would probably keep to 80x25 character screen in an array and have a full screen text redraw function. Another method might be to edit tiles on the fly to include both characters in a 8x8 tile but I wouldn't even know where to begin coding there..

Just wanted peeps to see 80x25ish text on a Genesis Yeah, I realise the filename is misleading.. woke up a 'lil too early with the programming bug

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[jlf65]

Nice idea. Using both planes avoids needing combinations of every character. For the cost of two planes, you keep the vram usage down to "normal."

[Tiido]

haha, nice idea

and 80x30 is better (50Hz only)

[Deleted]

Thanks guys! I made some further improvements.

* Redid the font and manually applied antialiasing
* Text can be displayed in CGA colors White, Cyan, Magenta and Green

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