Posts Tagged ‘workprint’

Workprint – June 2017

Tuesday, June 13th, 2017

There hasn’t been a lot of coding time for one reason or another recently, but one thing I’ve been tinkering with a little is the SuperCPU or more accurately an emulated version courtesy of VICE; I’ve reworked my unrolled plotter – the one used in MD201704 – to handle about four hundred points. There’s also a “user interface” so that the cosine curves can be fiddled with as well because that seemed like a fun thing to do.

Halfway through playing with it I realised that, since it’s 6502 code rather than 65816, there’s no reason it won’t work on my Turbo Chameleon-equipped machine as well… where the 6MHz mode takes longer to get all of those points cleared, updated and drawn whilst the “unlimited” mode actually gets job done faster than the SuperCPU! Since I can at least release it as tested on one real accelerator and possibly get someone to run it on a SuperCPU as well, this may well become MD201706 and there should be enough raster time to finally use Sean’s double speed cover of Brian The Lion without breaking a virtual sweat.

There’s also a C64CD demo being prodded at right now, quite literally in fact since it’s testing on my C64C as I write. Unlike previous releases on said label it isn’t inspired by classic 1980s or 1990s releases and instead has a loose theme based on current events and a discussion at the Atari Age forums which got onto the subject of encryption. It needs a little more work, but should be ready to go either tomorrow or possibly Thursday.

Workprint – May 2017

Saturday, May 13th, 2017

I’m completely messed up this month due to the web server spluttering and screwing its boot drive’s file system (did I lose a workprint from last month or just forget…?) and going through the final preparations for getting married in a week’s time so the workprint is rather late! And yes, I’m lightly terrified about getting hitched, the lack of throughput on this ‘ere blog should indicate that I’m not particularly comfortable with being in the limelight!

The post about the April instalment in the release was lost so I might as well bundle it in here so there’s a pretty screenshot to look at! MD201704 was for the Commodore 128 and used 2MHz mode in the upper and lower borders to get sixteen pixel wide colour splits. The inspiration came from seeing Rabenauge’s Elvis Copper on the Revision 2017 Twitch stream and wondering why the colour splits on their demo were so wide with only two distinct colours per scanline. Since I’d been playing with a four cycle wide splitter with three colour values and 2MHz enabled on the C128 anyway, that code was brought forward and overhauled to install the plotter and scroller.

Speaking of Revision, have a look at Ninja Dev’s What Are You Syncing About? because it’s a lovely piece of work – there’s no chance of any machine at Chez Roundabout running it without the result being more a slideshow than a demo, but that link goes to the YouTube video I’ve been trying to wear out.

Finally, the workprint itself and, as noted, spare time is a little more scarce this month but I’ve managed to get MD201705 on the C64 mostly written with just a couple of cosmetic features and the scroll text left on my “to do” list. Basically it’s a reworking of something I’ve done previously with a few extra tweaks and a little more colour, but I’m quite pleased with the results and it should turn up at some point either next week or possibly the week after depending on what I’ll amuse myself by calling “my schedule”.

Workprint – March 2017

Friday, March 17th, 2017

It’s time for another little update on things that are happening; first off I released a new monthly demo at the start of the week but… umm, sort of forgot to post about it here! That’ll appear in the next day or so – possibly including something of a “how it works” as well to sort of atone for the delay.

I haven’t settled on anything specific for MD201704 just yet – hopefully it’ll be released at a little Cosine get-together near the start of next month if that goes to “plan” – but there are a couple of prototypes which might work for that release. I’ve also had a couple of requests from other groups to code a slideshow and a BBS intro so those should be fun! Both are in the early stages at the moment and the slideshow’s artist is new to the C64 so I’m still walking him through the graphical capabilities right now, but things are going well on that front even if the poor soul is about to be introduced to one of my less than user friendly graphics conversion tools!

Yes, this post is somewhat vague and very light on screenshots but the projects themselves are somewhat nebulous at this point! It’s safe to say that there’ll be raster bars in there somewhere, though…