It’s “busy season” again, so there’s yet another entry into the CSDb Intro Creation Competition to mutter about! This time it’s called Eagles Dare, has got code and graphics by yours truly – the picture is mostly wired, but I did some work to make that happen and added details – and aNdy handed in another great tune. The memory footprint is $0400 to just before $43ff so this is a 16K intro.
The unusual feature of this one has to be the scrolling message, it uses Extended Background Colour Mode which limits font use to the first 64 characters (the upper two bits of the character code are used to select one of four background colours) but, rather than a fixed character set, the scroller has a 39 character buffer which is scrolled along the line, recycling whichever character falls off the end for the next. This means that any character from the C64’s upper or lower case ROM font can be selected, although the embedded commands for that and those used to select background and foreground colours take quite a bit of space and there’s not much room for actual text in this one!
So here we go with Here Goes, my first entry into the Intro Creation Competition for 2019 and, as promised yesterday, it’s for the 4K category; despite the limited memory footprint it’s still got 200 scanlines worth of raster colours, the logo and scrolling message required for all entries and a piece of music from Sack; the latter is a SID cover of the Amiga module Freeman which comes in at under 950 bytes long when Goattracker has finished weaving it’s magic!
The memory footprint for this one is a close to the wire $0400 to $13ff and a smattering of zero page use, with the screen data being decompressed directly to $0400 before the code starts up to save having to keep a second copy somewhere else beforehand. The source code can be grabbed from GitHub for anybody who might enjoy prodding around my slightly spaghetti-like code…
Just a quick post to mark the new month since I’m trying to get back into the habit. The main news this time is that a new iteration of Didi/Laxity’s Intro Creation Competition started up yesterday over at the CSDb and this time it comes in two flavours; both share most of the same rules but, along with the original 16K variant comes a new 4K category where the entire intro has to run from just 4,096 bytes of memory. That does sound limiting partly because it is, but sound is optional for 4K entries to make things a little easier.
Since I like this competition a little bit of [ahem] encouragement has been sent out to a few people as regards writing an entry or two already and, so far at least, nobody has told me to naff off because of it so that’s a positive!
As for myself, I’ve already got several notes about ideas for both categories, a fair bit of prototype code running and even some nearly finished intros including a feature complete 4K entry which is just waiting on some preset data. That should materialise on the interwebs very soon, possibly even tomorrow if all goes to “plan” and the siren call of the Columbo box set that’s been borrowing a lot of my free time doesn’t start up again…