Search found 537 matches

by kieranhj
Mon Jan 15, 2018 11:51 am
Forum: programming
Topic: BeebAsm's Hello World - printing part of file name, not "Hello World"
Replies: 11
Views: 190

Re: BeebAsm's Hello World - printing part of file name, not "Hello World"

I keep putting off thinking about this, but github sent me an email about the new PR, so I suppose I just have to admit it: I've been a terrible steward of this project :( Shall we get this sorted out properly once and for all? What I suppose needs to happen: ownership needs to be transferred to st...
by kieranhj
Wed Jan 10, 2018 9:55 am
Forum: bbcmicro.co.uk
Topic: Sugar Smash missing?
Replies: 4
Views: 156

Re: Sugar Smash missing?

Permission granted! > Just a quick question - the guys that run bbcmicro.co.uk (the complete > online BBC games archive) would like to include Sugar Smash in the list but > do like to get permission from the author first (for new games at least.) > Would you be happy for them to host it on the site ...
by kieranhj
Tue Jan 09, 2018 4:53 pm
Forum: bbcmicro.co.uk
Topic: Sugar Smash missing?
Replies: 4
Views: 156

Re: Sugar Smash missing?

Just sent a note. He's not usually that quick to reply, alas, particularly since he got a new girlfriend in Montreal!! Glad he's happy though. :D
by kieranhj
Tue Jan 09, 2018 3:03 pm
Forum: bbcmicro.co.uk
Topic: Sugar Smash missing?
Replies: 4
Views: 156

Sugar Smash missing?

Should Sugar Smash be in the site? http://www.pouet.net/prod.php?which=67796 I'm sure Jules wouldn't mind (I can ask him if you really want to be sure.)
by kieranhj
Thu Jan 04, 2018 6:54 pm
Forum: projects
Topic: New game - tube type thingy
Replies: 28
Views: 882

Re: New game - tube type thingy

Finally got chance to take a look at the video - this is amazing! =D> I don't think I fully appreciated what you were trying to show me untextured at ABUG, sorry about that!! My 2p is, sod the game, this is demo material - tube scroller anyone? :D
by kieranhj
Sat Dec 30, 2017 8:40 pm
Forum: other vintage computer hardware, software and games
Topic: Show us your retro computers
Replies: 71
Views: 4651

Re: Show us your retro computers

Finally got to set up my study after moving house in the summer. Some 8-but goodness here and all 6502-based of course!!
by kieranhj
Tue Dec 19, 2017 7:11 pm
Forum: software: new games
Topic: New Release: Retro Software's WHITE LIGHT by Sarah Walker
Replies: 55
Views: 2486

Re: New Release: Retro Software's WHITE LIGHT by Sarah Walker

Has anyone contacted Darren the editor at Retro Gamer yet BTW? They need to review and feature this awesome game!
by kieranhj
Sun Dec 17, 2017 9:20 pm
Forum: software: other
Topic: Image2Mode7 - general image to teletext converter
Replies: 56
Views: 5043

Re: Image2Mode7 - general image to teletext converter

I was thinking just now it would be ace to see this converter as a windows app with drag and drop. I wanted to use it again tonight but thought ' where do I start ' - as it's been a while. Putting this on the Christmas wish list! :) Heh. It certainly crossed my mind and would be a lot more usable b...
by kieranhj
Fri Dec 15, 2017 5:27 pm
Forum: hardware
Topic: Acorn's Second Processors and the Tube - what, and why
Replies: 11
Views: 789

Re: Acorn's Second Processors and the Tube - what, and why

I'm not sure either part of that is really true. By having four FIFOs, the Tube supports a fairly rich set of binary protocols, and filing system operations are at least as significant a use as keyboard input and VDU output. Yes, that's true they did put in a separate FIFO for all of the expected I...
by kieranhj
Wed Dec 13, 2017 10:51 pm
Forum: hardware
Topic: Acorn's Second Processors and the Tube - what, and why
Replies: 11
Views: 789

Re: Acorn's Second Processors and the Tube - what, and why

I've added a few more points to the bottom of the head post. Thanks for the write up BigEd. I have always been fascinated by the Tube architecture - such a unique & forward thinking aspect of Acorn’s design but seemingly forever underused. As you articulate above, the Tube is a copro not a mult...
by kieranhj
Wed Dec 13, 2017 12:15 pm
Forum: emulators
Topic: Emulator support for VideoNuLA
Replies: 60
Views: 3740

Re: Emulator support for VideoNuLA

Thanks for looking, Kieran. With reference to the sign I was thinking "What is the forefound colour is dimmer, at least for that colour component, than the background colour so the expression (fg - bg) is negative. Don't worry, it's correct and standard for simple colour interpolation - you ar...
by kieranhj
Tue Dec 12, 2017 11:51 am
Forum: off-topic
Topic: Like to buy something on Ebay from the US...
Replies: 11
Views: 507

Re: Like to buy something on Ebay from the US...

Hey Wim,

Sorry this doesn't help you but I just got back from a work trip to the US a few days ago. I don't go as often as I used to but happy to hand carry small items back to the UK next time. I will give you a PM when I get notice of another trip.

Cheers,
Kieran
by kieranhj
Mon Dec 11, 2017 9:18 pm
Forum: emulators
Topic: Emulator support for VideoNuLA
Replies: 60
Views: 3740

Re: Emulator support for VideoNuLA

The kernel of this is the calculation of where, between the foreground and background colours each weight should sit. Is this linear calculation right or should it be logarithmic or something else? What about the sign of (fg_red - bg_red)? Hey Steve, Sorry not had much chance to do Beeb stuff of la...
by kieranhj
Thu Nov 30, 2017 9:05 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

No new build to share but just a quick note that my crazy "DLL" scheme worked for transparently spreading gameplay code across multiple SWRAM banks. Because the code already has a jump table interface between code modules, I moved all of these to main RAM (above PAGE, below SHADOW) and cha...
by kieranhj
Thu Nov 30, 2017 8:43 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

I think the keyboard layout was very much an afterthought in this on the Apple - having the action key so far away from the rest of them makes life difficult in the extreme. Maybe user definable keys for the Beeb? It's on the feature suggestion list! I have added everything that I am aware of which...
by kieranhj
Wed Nov 29, 2017 5:38 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

Since the port is getting some interest from a variety of places, I have created a landing page on our Bitshifters site: https://bitshifters.github.io/posts/prods/bs-pop-beeb.html From now on the latest WIP for you all to try will have a consistent location rather than a new crazy name each time: ht...
by kieranhj
Wed Nov 29, 2017 5:35 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

If you need any comparisons doing between the Beeb and Apple versions and no-one else has volunteered let me know. Although it may be a while before I can test the later stuff as I am still figuring out the controls! I don't have an Apple II (yet!) but from the code it appears to default to joystic...
by kieranhj
Wed Nov 29, 2017 2:07 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

Heh. I got a small mention in this month's Retro Gamer magazine. I wish they'd just ping me - I'm not that hard to get hold of!!
by kieranhj
Wed Nov 29, 2017 7:38 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD
Replies: 17
Views: 725

Re: ABUG SOUTH 1 to 3 June 2018 (Hampshire) BOOKING THREAD

Great work Robert and just down the road from me! Please put me down for the full weekend with kit. Thank you.
by kieranhj
Tue Nov 28, 2017 12:50 pm
Forum: upcoming and recent events & exhibitions
Topic: Gauging Interest: ABug Manchester Friday 19th - Sunday 21st January 2018
Replies: 48
Views: 1711

Re: ABug Manchester Friday 19th - Sunday 21st January 2018

philb wrote:I was idly thinking the other week about trying to organise something in Cambridge in March/April or thereabouts. If anybody else would be interested in that then please speak up!

I think jbnbeeb (JasonN) was planning similar but either way I would be interested in attending something for sure.
by kieranhj
Tue Nov 28, 2017 12:47 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

I don't see any reason that would necessarily be true? Other schemes might be a bit fiddly, but they're certainly possible. And there's no rule that says you can't have data pertaining to more than one sprite in the same byte. My €0.02 - PoP is all about the character sprite and animation. It was p...
by kieranhj
Mon Nov 27, 2017 6:42 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

my tuppence the MODE5 halfhight is a non-starter. Too high a cost on sprite quality :D Too late now! I’ve put this on a compile switch for a while to test out. I might post a build to see what people reckon. The more I think about it though, the more scaleable it seems for now anyway. I can control...
by kieranhj
Mon Nov 27, 2017 6:38 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

tricky wrote:Did you try having a lut for scan lines?
Maybe have 0 for not indexed, followed by the usual data or indexed for the most common 255 scan lines?
I may try some other methods later.

That could be very interesting for the most common 3 byte wide case. Worth running the numbers for sure.
by kieranhj
Mon Nov 27, 2017 2:58 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 165
Views: 9650

Re: Acorn Art Thread

What's the specs of the available palette etc? I assume it's just capable of remapping the 8 colours using a look up table? In which case most of my simple recoloured pics should work fine. It's surprising how much difference just subtly tweaking the palette can make to a picture really. You can ma...
by kieranhj
Mon Nov 27, 2017 2:02 pm
Forum: off-topic
Topic: Acorn Art Thread
Replies: 165
Views: 9650

Re: Acorn Art Thread

Following on from the APT-E I'm continuing a series of locomotives. There are enough different types that I can carry on doing this until everyone gets completely sick of teletext trains :lol: On a slight aside, I wondered if you might be interested in "emulating" / "approximating&qu...
by kieranhj
Mon Nov 27, 2017 1:39 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

Hey folks, thought I would give you a quick lunchtime update. I have spent more time than is natural (or reasonable) thinking about compressing these flipping player sprites! Because the player sprites only use two colours (white + orange) plus black (mask) there are MODE 5 pixel combinations that a...
by kieranhj
Thu Nov 23, 2017 9:23 am
Forum: for sale / freebies
Topic: New release: Retro Software's WHITE LIGHT by Sarah Walker for the BBC B/B+/Master & Master Compact
Replies: 23
Views: 1083

Re: New release: Retro Software's WHITE LIGHT by Sarah Walker for the BBC B/B+/Master & Master Compact

Great work Sarah! Congratulations for finally finishing the game - a real labour of love - it is without a doubt the finest shooter ever made for the BBC. =D> =D> =D>

Looking forward to playing more than just level 1 repeatedly for compatibility testing at ABUG. :D
by kieranhj
Wed Nov 22, 2017 7:11 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

Yes, sorry I should have added that to the requirements! All player sprites must be plotted pixel aligned and are pixel clipped against the left & right hand edge of the screen.
by kieranhj
Wed Nov 22, 2017 7:00 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

Thanks for the podcast link - I love Romeo Knight's Amiga mod music! I've tweeted the guys so will see if they follow up. I've been pondering the player sprite compression a bit more and decided to throw it open to you folks for suggestions (I may regret this :wink:) It feels like it must be possibl...
by kieranhj
Wed Nov 22, 2017 10:12 am
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 159
Views: 11499

Re: Starting a Prince of Persia port...

trixster wrote:This is just great! I can't wait to try it. Now I just need to work out how to get my datacentre to export to a floppy disk :lol:

Easy! *IMPORT -D0 filename.ssd

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