Search found 5404 matches

by tricky
Tue Apr 13, 2021 1:14 pm
Forum: general
Topic: 3D Printed Parts for BBC Micro
Replies: 4
Views: 176

Re: 3D Printed Parts for BBC Micro

I would imagine a little epoxy around the join between the outside of the bit that goes over the stalk from the switch and the key top would help if cracking is a worry.
by tricky
Tue Apr 13, 2021 1:10 pm
Forum: 8-bit acorn software: classic games
Topic: A definitive comparison of Elite versions
Replies: 60
Views: 2480

Re: A definitive comparison of Elite versions

Quote is a useful tool :)
I only found it by putting basic HTML in [ ] instead of < > and it worked.
I haven't found any other tags/attributes that are supported, but hey this is better than nothing.
by tricky
Tue Apr 13, 2021 1:01 pm
Forum: introduce yourself
Topic: Good morning to all !
Replies: 6
Views: 141

Re: Good morning to all !

Welcome and good luck with your beeb.
You might find a few model A games on BBCMicro.co.uk and you can put them in spare slots on the BEEB.MMB and then *DBOOT 500 or whatever slot you put them in.
by tricky
Tue Apr 13, 2021 12:55 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 1024
Views: 112332

Re: MMFS Development and Support

Not on MMFS, I believe it catches all error codes.
by tricky
Mon Apr 12, 2021 12:59 pm
Forum: introduce yourself
Topic: Sayin' hello from the land down under
Replies: 9
Views: 131

Re: Sayin' hello from the land down under

Welcome, I think that counts as quite a large collection "down under" :)
by tricky
Sun Apr 11, 2021 11:54 pm
Forum: 8-bit acorn software: other
Topic: Visual Studio Code Extension for BeebAsm
Replies: 10
Views: 2075

Re: Visual Studio Code Extension for BeebAsm

With each new VS,I look to see if I can make a plug-in, but with each new version they make it harder to do in c/c++, so I don't.
by tricky
Sun Apr 11, 2021 4:19 pm
Forum: 8-bit acorn hardware
Topic: BBC Issue 7 help!!!!!
Replies: 26
Views: 684

Re: BBC Issue 7 help!!!!!

Well done, and a good example of how a beeb is hardly ever beyond repair.
by tricky
Sun Apr 11, 2021 3:04 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

That's correct, but I did it in Scramble because it was less memory. It also means that I can probably fit in a few special behaviors and use the same code for many patterns. The relative movements do make it easier with scrolling and chaining sequences together. If the circle was going into the fin...
by tricky
Sun Apr 11, 2021 1:05 pm
Forum: 8-bit acorn hardware
Topic: MMFS Development and Support
Replies: 1024
Views: 112332

Re: MMFS Development and Support

Are you using MMFS?
There was a write incompatibility in SmartSPI with a few cards.
by tricky
Sun Apr 11, 2021 12:21 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

Not quite, but close. Each sprite has an index into .circle_movement that is used to read the low byte of a function address. The second chunk is the actual fuctions: .move_L2U will move a sprite left 2 and up 1, it does this by moving the sprite up and dropping into move_L2_ .move_L2_ move the spri...
by tricky
Sun Apr 11, 2021 11:34 am
Forum: programming
Topic: Programming Help
Replies: 20
Views: 559

Re: Programming Help

No problem ;) My first attempt at Pac Man was in about '83 and was MODE 4, shifting the bits as I went. I thought that I was near perfection when I worked out that I could choose whether to shift left or right to minimise shifting ;) I think it took nearly the whole frame just to draw Pac Man and ma...
by tricky
Sun Apr 11, 2021 9:56 am
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

I have a table of function pointers, actually just the low byte of the function address and an offline program generates the table that contains them: .circle_movement { EQUB LO(move__D) EQUB LO(move_LD2) EQUB LO(move__D) EQUB LO(move__D2) EQUB LO(move_LD) ... These functions look like: .*move_L2U :...
by tricky
Sun Apr 11, 2021 8:03 am
Forum: programming
Topic: Programming Help
Replies: 20
Views: 559

Re: Programming Help

I love questions :) Frogger, helpfully has many opportunities to draw the same sprite or part of a sprite multiple times at the same offsets. The logs in Frogger can be drawn in sections with very minor overhead and is actually a win because you get more STAs per LDA. Most of how Jeltron works is lo...
by tricky
Sat Apr 10, 2021 10:46 pm
Forum: introduce yourself
Topic: Hello and first question
Replies: 8
Views: 186

Re: Hello and first question

Welcome
by tricky
Sat Apr 10, 2021 7:56 pm
Forum: new projects in development: games
Topic: Lady Bug
Replies: 206
Views: 5298

Re: Lady Bug

I don't know Photoshop, does it have any brushes or patterns that would grid align? In paint shop Pro, you can set a grid size to view over the image, if PS has it, maybe a 2x1 pixel grid would help. Failing that, how about a chequer board of 2x1s in a translucent layer over the sprites? I was also ...
by tricky
Sat Apr 10, 2021 7:51 pm
Forum: introduce yourself
Topic: Howdy!
Replies: 13
Views: 180

Re: Howdy!

Welcome, good luck with your Archie and your middle age ;)
by tricky
Sat Apr 10, 2021 7:07 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

Yes, sorry about that!
I had used the auto masking, in my "Spyhunter" vertical scrolling demo with tile redrawing to clear but had forgotten!
New .ssd, but I have only tidied up the ROM loading and found a new way to break the BASIC tokenization in beebasm (end the file with char(10)).
by tricky
Sat Apr 10, 2021 2:16 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

Made loader load ROM before breaking MMC FSs. Fixed the small gaps in the landscape. I don't know what is causing the ship glitter trail, it seems to be when there is enough landscape to push the rendering just over a frame for one in four frames, but I can't see how that can cause the bug. I though...
by tricky
Sat Apr 10, 2021 12:27 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

Here is a table of different sprite types, based on the requirements for how they interact with what is on screen. The background is considered to be draw once at the start, so must not be corrupted. I'm not including saving and restoring the background (for now). Other sprites are considered to be ...
by tricky
Sat Apr 10, 2021 9:24 am
Forum: introduce yourself
Topic: That kid with that strange computer
Replies: 6
Views: 159

Re: That kid with that strange computer

Welcome, enjoy your journey of discovery. There was an ABUG talk last week but the author of sim city and many other Beeb games, it should be on the ABUG site in a little while.
by tricky
Sat Apr 10, 2021 9:20 am
Forum: new projects in development: games
Topic: Lady Bug
Replies: 206
Views: 5298

Re: Lady Bug

My artistic talent is one reason I stick with mode 1. Your bud look great :)
by tricky
Fri Apr 09, 2021 8:52 pm
Forum: 8-bit acorn emulators
Topic: B-em is 10
Replies: 9
Views: 1888

Re: B-em is 10

Yes, what Matt said :) =D>
by tricky
Fri Apr 09, 2021 8:48 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #15, Thursday 8th April 2021, 7pm - 10pm (GMT)
Replies: 14
Views: 365

Re: Weeknight 'Virtual' Dev session #15, Thursday 8th April 2021, 7pm - 10pm (GMT)

Because when you set the 6845 up like this, instead of using addresses: 0, 8, 16, 24,... 1, 9, 17, 25,... ... 7, 15, 23, 31,... it uses: 0, 8, 16, 24,... 0, 8, 16, 24,... ... 0, 8, 16, 24,... Which combined with say only showing the first four scan lines of a character row means that you can have 4 ...
by tricky
Fri Apr 09, 2021 4:59 pm
Forum: programming
Topic: masking top of screen in mode 2
Replies: 9
Views: 233

Re: masking top of screen in mode 2

And he centred it vertically, what a nice chap :)
by tricky
Fri Apr 09, 2021 4:55 pm
Forum: past weeknight 'developer' sessions
Topic: Weeknight 'Virtual' Dev session #15, Thursday 8th April 2021, 7pm - 10pm (GMT)
Replies: 14
Views: 365

Re: Weeknight 'Virtual' Dev session #15, Thursday 8th April 2021, 7pm - 10pm (GMT)

There was a point in the discussion last night when I said I didn't understand what was being talked about. I can't remember if it was during the chat about DOOM or the one where we were setting the screen start address to zero to see blinkenlights. But I think there was something about setting &qu...
by tricky
Fri Apr 09, 2021 4:41 pm
Forum: development tools
Topic: BeebAsm
Replies: 147
Views: 20214

Re: BeebAsm

That builds fine with 2010.
by tricky
Fri Apr 09, 2021 1:58 pm
Forum: new projects in development: games
Topic: Possible (no promises) R-Type like game for the beeb
Replies: 68
Views: 2101

Re: Possible (no promises) R-Type like game for the beeb

From the Programming Help thread : In the 80s, I was working on Jeltron with Gil JaySmith and that was 17fps, but everything else that I have done has been 50fps or didn't really do fps! Astro Blaster uses the same method as the earlier demo in the R-Type thread where there are 32 16x16 (maybe 15x16...
by tricky
Fri Apr 09, 2021 1:56 pm
Forum: programming
Topic: Programming Help
Replies: 20
Views: 559

Re: Programming Help

In the 80s, I was working on Jeltron with Gil JaySmith and that was 17fps, but everything else that I have done has been 50fps or didn't really do fps! Astro Blaster uses the same method as the earlier demo in the R-Type thread where there are 32 16x16 (maybe 15x16) spinning sprites drawn in a littl...

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