Search found 484 matches

by MintyTheCat
Wed Nov 16, 2016 10:54 pm
Forum: Announcement
Topic: Tanglewood - now on Kickstarter!
Replies: 19
Views: 7568

Re: Tanglewood - now on Kickstarter!

Excellent news, Matt. I am glad that you stuck to it. Only sorry that we did not get you UMDK to use in good time.

Best of luck with it and I hope you reach the Kickstart Goal.

Cheers.
by MintyTheCat
Wed Nov 16, 2016 10:44 pm
Forum: UMDK
Topic: UMDK manufacturing: new RUN of testers! 5 more kits aviable!
Replies: 16
Views: 4717

Re: UMDK manufacturing: new RUN of testers! 5 more kits aviable!

We were going to get a batch made, I made some enquiries and the guy in the UK completely wasted our time. If anyone knows a reputable company who could build these for a small batch then we can go with that. I have been out of action myself and had have to undergo some physio-therapy and the issue ...
by MintyTheCat
Sun Oct 02, 2016 10:30 am
Forum: Tools
Topic: 68000 instruction timing from source?
Replies: 14
Views: 3152

Re: 68000 instruction timing from source?

I began work on a similar tool some time ago. You need to essentially execute the loops and account each time. I have not looked into it but it would make sense to look at Starscream for ideas.
by MintyTheCat
Tue Jun 21, 2016 9:34 am
Forum: SGDK
Topic: [C preprocessor] generating "mirrored" functions
Replies: 3
Views: 1168

Re: [C preprocessor] generating "mirrored" functions

Hi, your best bet is to implement your state-machines using the table method. It does not look like you are aware of it - have a look into it but if you cannot find anything useful then I will dig out an example. Also look up 'hierarchical state-tables' too as the method is the same. Using the SM ta...
by MintyTheCat
Sun Jun 19, 2016 7:10 am
Forum: Megadrive/Genesis
Topic: Infinite scrolling maps/scroll plane "edge" DMA
Replies: 15
Views: 3716

Re: Infinite scrolling maps/scroll plane "edge" DMA

No compression at all?! Have you not got a ROM size limit in mind? To be honest, I haven't really sat down to work out how much I want to spend on the ROM size but I make things take up as little space as possible to give me breathing space for later on. I have no knowledge of compression at all. I...
by MintyTheCat
Sat Jun 18, 2016 5:47 pm
Forum: Megadrive/Genesis
Topic: Infinite scrolling maps/scroll plane "edge" DMA
Replies: 15
Views: 3716

Re: Infinite scrolling maps/scroll plane "edge" DMA

I'm doing pretty much that - stream in one screen's worth of data at the start of the level, then only work with the delta row/columns after that. Ensure that your camera's velocity can't exceed more than one tile or that you have the bandwidth spare to keep up. I update with deltas too using caref...
by MintyTheCat
Fri Jun 17, 2016 9:06 pm
Forum: Hardware
Topic: GBS-8220 fuzzy and green
Replies: 7
Views: 3045

Re: GBS-8220 fuzzy and green

I've tried pressing down on each chip in turn, and bending the board slightly, but no change in the signal at all. I'll fetch out the Gamecube and give it a whirl. There's probably some people at work who might have some gear, a few are into robotics. Ok, but from the photo you took I can see that ...
by MintyTheCat
Thu Jun 16, 2016 1:12 pm
Forum: Megadrive/Genesis
Topic: Aggregating Community Research
Replies: 12
Views: 4929

Re: Aggregating Community Research

Nemesis wrote:Sorry, as you might have noticed I've been pretty well absent from SpritesMind (and pretty much everywhere else) for the past year or so, just getting back into the swing of things now.
No worries at all - life gets in the way sadly :)
by MintyTheCat
Thu Jun 16, 2016 6:52 am
Forum: Megadrive/Genesis
Topic: Aggregating Community Research
Replies: 12
Views: 4929

Re: Aggregating Community Research

The forum thread Nemesis started with his findings from logic analyzer work is the first thread linked in the VDP section. He also posted some information in the next thread listed. The last thread in the list was also started by Nemesis. Are you referring to a document besides those? Yes, I had he...
by MintyTheCat
Wed Jun 15, 2016 9:36 pm
Forum: Megadrive/Genesis
Topic: Aggregating Community Research
Replies: 12
Views: 4929

Re: Aggregating Community Research

Is the VDP doc that Nemesis wrote online any where? Plus, it is a good idea to add Charles' VDP doc here too e.g. here:

http://emu-docs.org/Genesis/Graphics/genvdp.txt
by MintyTheCat
Wed Jun 15, 2016 6:32 pm
Forum: SGDK
Topic: programming noob, hi forums! Advice please!
Replies: 17
Views: 3751

Re: programming noob, hi forums! Advice please!

I shall not go through your comments as you have not gone through mine and see now value in repeating myself. Cero already addressed you comments and i just agreed with them so i saw no reason of repeating him. But given this : I shall say it boils down to design. If you can write better C code tha...
by MintyTheCat
Wed Jun 15, 2016 2:23 pm
Forum: SGDK
Topic: programming noob, hi forums! Advice please!
Replies: 17
Views: 3751

Re: programming noob, hi forums! Advice please!

I shall not go through your comments as you have not gone through mine and see now value in repeating myself. I shall say it boils down to design. If you can write better C code than you can Assembly code, Stef that simply tells me that you have not done enough Assembly. There may well be a differen...
by MintyTheCat
Tue Jun 14, 2016 7:51 pm
Forum: SGDK
Topic: programming noob, hi forums! Advice please!
Replies: 17
Views: 3751

Re: programming noob, hi forums! Advice please!

Edit: there are some good points raised here: https://www.quora.com/Why-did-C-replace-assembly-as-the-principal-game-programming-language-by-the-mid-1990s It is kind of worth nothing too that up to the 16-bit machines it was still possible for a human programmer to write better code than a Compiler ...
by MintyTheCat
Tue Jun 14, 2016 6:15 pm
Forum: SGDK
Topic: programming noob, hi forums! Advice please!
Replies: 17
Views: 3751

Re: programming noob, hi forums! Advice please!

TBH, the reason for 98% of them being in asm is that compilers in 1990 sucked. You now have access to the latest gcc, so little reason to write asm unless you hit performance bottlenecks. Not at all, the MD is very low end hardware. I cannot for the life of me think that GCC has improved that much ...
by MintyTheCat
Tue Jun 14, 2016 5:00 pm
Forum: Hardware
Topic: GBS-8220 fuzzy and green
Replies: 7
Views: 3045

Re: GBS-8220 fuzzy and green

Hi Matt, I am not sure what schematic you have for your connections but I found that if you set the resolution to anything other than 1360x768 it will fail for me too. My settings are as in the photos below: http://s31.postimg.org/z3tabroqz/IMG_4569.jpg http://s31.postimg.org/4nryrdsln/IMG_4570.jpg ...