Search found 774 matches

by kieranhj
Thu Apr 11, 2019 10:28 am
Forum: general
Topic: Today I received.....
Replies: 5108
Views: 375902

Re: Today I received.....

Probably worth checking it's not got 2.5MB installed -- the STe mis-detected 2.5MB as 4MB and required a patch program to be run at boot up). There's some good RAM test software for the ST here: https://www.chzsoft.de/site/hardware/diverse-kleinigkeiten-fur-den-atari-st/#ram-test-software-yaart I k...
by kieranhj
Wed Apr 10, 2019 10:28 am
Forum: hardware
Topic: My New BBC Master
Replies: 17
Views: 397

Re: My New BBC Master

Stunt Car Racer is amazing!! Any tips for getting rid of the pen on the case and other cleaning up of the scratches (below the pen, it looks like someone has attempted to scratch out a number or something)? Glad you're enjoying the game! :) For the pen, I was introduced to ' magic sponge ' by sbadg...
by kieranhj
Tue Apr 09, 2019 6:14 pm
Forum: general
Topic: Today I received.....
Replies: 5108
Views: 375902

Re: Today I received.....

A strong candidate for retrobrite, if ever I saw one! Seems to have 4Mb installed though. :D

20190409_115130614_iOS.jpg
Atari 1040STe
by kieranhj
Sun Mar 31, 2019 4:59 pm
Forum: off-topic
Topic: Atari 2600
Replies: 27
Views: 529

Re: Atari 2600

Best demos of recent years are Chiphead (a stunning demake of the seminal PC demo Ziphead), Bang! and aTaRSI. For 3D try Derivative 2600 although it's all faked using rasters of course, but still impressive. (Get ready for some seriously headache-inducing 2-channel TIA music. :lol:)
by kieranhj
Sun Mar 31, 2019 10:48 am
Forum: off-topic
Topic: Atari 2600
Replies: 27
Views: 529

Re: Atari 2600

For anyone who would like to know more about how the Atari 2600 works, I can thoroughly recommend the book ‘Racing the Beam’ which has a great balance of technical details combined with insights into the creative culture of the day.

https://mitpress.mit.edu/books/racing-beam
by kieranhj
Sun Mar 31, 2019 10:43 am
Forum: off-topic
Topic: Atari 2600
Replies: 27
Views: 529

Re: Atari 2600

Coincidentally I just procured a copy of Pitfall 2 from a thrift store in the US. It is considered reasonably rare but as always there are carts to be had for a price (eBay the highest of course.) After cleaning the edge connector with IPA I can confirm the NTSC cart works in a PAL machine although ...
by kieranhj
Sat Mar 30, 2019 8:50 pm
Forum: off-topic
Topic: Atari 2600
Replies: 27
Views: 529

Re: Atari 2600

I’m with you on the Atari 2600, such an evocative machine. Not seen Xevious on it before - seriously impressive. There are some crazy demos made for the machine in recent times; I quite fancy having a good at writing one myself when I’ve finally run out of Beeb ideas. The hardware is so familiar yet...
by kieranhj
Thu Mar 28, 2019 1:55 pm
Forum: software: other
Topic: Is it legal to make ported or modified games available for download?
Replies: 14
Views: 486

Re: Is it legal to make ported or modified games available for download?

For my Prince of Persia port, Jordan Mechner, the author of the original game posted the Apple II source to GitHub: https://github.com/jmechner/Prince-of-Persia-Apple-II with the following statement in the readme: As the author and copyright holder of this source code, I personally have no problem w...
by kieranhj
Thu Mar 21, 2019 12:47 am
Forum: software: new games
Topic: Doom?
Replies: 92
Views: 3433

Re: Doom?

Here's another good dithering reference: https://bisqwit.iki.fi/story/howto/dither/jy/

PS. Awesome work Rob! What does this look like in MODE 8 out of interest? Low resolution but twice the framerate maybe?!
by kieranhj
Fri Mar 15, 2019 9:48 pm
Forum: software: new games
Topic: Hard disk installation of new games.
Replies: 4
Views: 300

Re: Hard disk installation of new games.

I installed Stunt car racer and it works very well with the exception of saving/loading. I presume the game is hard coded to use DFS? If not any ideas on how to get it to work? Prince of Persia doesn't want to work at all from HD. I know it's pushing the master all the way so maybe it's just not po...
by kieranhj
Wed Mar 13, 2019 12:19 pm
Forum: software: new games
Topic: Stunt Car Racer for BBC Master
Replies: 48
Views: 2267

Re: Stunt Car Racer for BBC Master

Thanks for the feedback Sydney - let me know if you run into any definite problems.

One thing to note is that we did add audio volume support - press plus/minus on the Master keypad to turn the volume up/down. You can also silence the menu music with 'M' whilst on a selectable menu.
by kieranhj
Sat Mar 09, 2019 12:12 am
Forum: software: other
Topic: When (and why) did PLOT 8-15 change?
Replies: 13
Views: 569

Re: When (and why) did PLOT 8-15 change?

Rich Talbot-Watkins wrote:
Fri Mar 08, 2019 9:05 pm
Hard to say. I don't think anyone ever used those PLOT codes, ever, in the history of the Beeb :wink:
:lol: I love that PLOT 69 is 'plot point' - because there are 68 plot operations more important than plotting a single point to the screen. :)
by kieranhj
Fri Mar 08, 2019 2:46 pm
Forum: projects
Topic: Starting a port of Stunt Car Racer...
Replies: 34
Views: 2228

Re: Starting a port of Stunt Car Racer...

Would it work on a B+ 128K? Sadly not as it (now) uses 65C02 instructions and the additional bits in the ACCCON registers for SHADOW & HAZEL RAM. I also understand that the additional 12K in the B+ 128 overlaps the SWRAM area at &8000, so cannot be used in the same way as HAZEL, which sits above at...
by kieranhj
Thu Mar 07, 2019 7:25 pm
Forum: software: new games
Topic: Stunt Car Racer for BBC Master
Replies: 48
Views: 2267

Re: Stunt Car Racer for BBC Master

trixster wrote:
Thu Mar 07, 2019 7:03 pm
=D> =D> =D> :shock: :shock: :shock:
I think you've got some paperwork to sort. :lol: Now, about that Falcon... :D :lol:
by kieranhj
Thu Mar 07, 2019 7:24 pm
Forum: projects
Topic: Starting a port of Stunt Car Racer...
Replies: 34
Views: 2228

Re: Starting a port of Stunt Car Racer...

It's been a long journey (although not as long as POP!) but we finally released v1.0: https://stardot.org.uk/forums/viewtopic.php?f=57&t=16655 Feel free to continue to ask technical questions in this thread! Unfortunately the game has ended up being BBC Master only due to the use of HAZEL to make 7K...
by kieranhj
Thu Mar 07, 2019 7:01 pm
Forum: software: new games
Topic: Stunt Car Racer for BBC Master
Replies: 48
Views: 2267

Stunt Car Racer for BBC Master

Hello everyone, Thank you all for being so patient :) but we're finally pleased to announce that we've released our port of Stunt Car Racer for the BBC Master! SCR title large.png Further info including the disc image download can be found on our Bitshifters page: https://bitshifters.github.io/posts...
by kieranhj
Wed Mar 06, 2019 9:44 pm
Forum: software: new games
Topic: New game for the BBC Master : Planet Nubium
Replies: 35
Views: 4011

Re: New game for the BBC Master : Planet Nubium

Planet Nubium now has game music!!! Through the genius of Kieran Connell the game can now play tunes ripped from the Sega Master System. The SMS has the same Texas Instruments SN76489 sound chip as the BBC Micro. Thanks Andrew. I would like to add that although I provided the music player the effor...
by kieranhj
Mon Feb 18, 2019 10:28 pm
Forum: software: new games
Topic: Doom?
Replies: 92
Views: 3433

Re: Doom?

As amazing as the Spectrum version is from a technical point of view on Z80, I would posit it’s not actually Doom but a 2D raycasting engine with Doom-like sprites. If RobC can work his native ARM copro magic with SDLDoom that would be seriously impressive. Otherwise I’d suggest something more modes...
by kieranhj
Mon Feb 18, 2019 3:22 pm
Forum: programming
Topic: Newbie 6502 assembly questions...
Replies: 25
Views: 958

Re: Newbie 6502 assembly questions...

One thing you’ll quickly feel is how long-winded anything beyond 8-bit maths can be on the 6502. If you can afford the RAM then a precalculated lookup table is almost always going to be quicker & more convenient, particularly when separated into low and high byte tables not paired. Also to generalis...
by kieranhj
Sun Feb 17, 2019 4:53 pm
Forum: projects
Topic: Starting a port of Stunt Car Racer...
Replies: 34
Views: 2228

Re: Starting a port of Stunt Car Racer...

Some folks got a sneak peak at ABUG South in January but we’re aiming to get finished and released by end of February if possible. RL notwithstanding of course. Stay tuned... :D
by kieranhj
Sun Feb 17, 2019 4:49 pm
Forum: for sale / freebies
Topic: Free to collector
Replies: 18
Views: 750

Re: Free to collector

Hi In my recent haul of stuff I came across what looks like a full set of original Archimedes user manuals, plus a box of Archie disks. There is no Archimedes in the haul so these are not of use to me. Please come and take them off my hands. No charge, but I won't ship or split. Take it all or not ...
by kieranhj
Mon Feb 04, 2019 10:22 am
Forum: introduce yourself
Topic: Greetings from me
Replies: 25
Views: 682

Re: Greetings from me

The thing I'm probably most known for was the "BBC Dreamscape Demo" (Which would never have happened if not for help from Henley of The Yorkshire Boys), if you've not seen it there's a video of it on my youtube page. https://www.youtube.com/watch?v=_mrOAB4UBcM I'm going to leave it there for now, b...
by kieranhj
Fri Jan 25, 2019 2:06 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 228
Views: 26242

Re: Going great guns on a Prince of Persia port...

Has anyone got this working on a compact? I failed with dfs and a gotek as it stops after the initial intro. Sorry, it's a known issue or perhaps one of several with MOS 3.5 / Compact. I never got round to finding / fixing it last year as was a bit burnt out on POP by the time it was released. I'll...
by kieranhj
Fri Jan 25, 2019 10:01 am
Forum: introduce yourself
Topic: Hello...
Replies: 18
Views: 589

Re: Hello...

What a fantastic CV Richard, great to have you on the forum. I don't suppose you're considering a return to 6502 programming perchance? It would be amazing to have some BBC conversions of those earlier games (although might be a bit of a squeeze..!) :D
by kieranhj
Thu Jan 24, 2019 6:16 pm
Forum: projects
Topic: Going great guns on a Prince of Persia port...
Replies: 228
Views: 26242

Re: Going great guns on a Prince of Persia port...

Hi! Is a Electron with 128Kb SWR also supported? Greetings, Stefan Hi Stefan - unfortunately not. This is for the BBC Master only as it relies on the additional memory and features available on that machine outside of just the SWRAM space. I hope you can enjoy it on an emulator if you don't have a ...
by kieranhj
Sat Jan 19, 2019 10:38 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD
Replies: 134
Views: 6507

Re: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD

Here's a couple of pics from setting up last night.
by kieranhj
Fri Jan 18, 2019 10:47 am
Forum: upcoming and recent events & exhibitions
Topic: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD
Replies: 134
Views: 6507

Re: ABUG SOUTH 18 to 20 January 2019 (Hampshire) BOOKING THREAD

Does anyone want me to bring the RGB > SCART > HDMI capture kit? I wasn't planning on bringing a HDMI monitor this time but if someone would like to make some 50Hz 720p Beeb captures (or even Archie maybe?) then I'm happy to chuck it on the ever growing pile for the car. (I'm hoping these tables are...
by kieranhj
Tue Jan 15, 2019 6:30 pm
Forum: hardware
Topic: New ROM / RAM Expansion Board for BBC B
Replies: 81
Views: 2515

Re: New ROM / RAM Expansion Board for BBC B

Nothing that elaborate, I'm afraid. Main memory / shadow memory is switched in and out as follows: Control bits Memory area selected SHEN MEMSEL &3000-&7FFF 0 X Main / Video memory 1 0 Shadow memory 1 1 Main / Video memory Thanks Ken. So this is purely switching which bank the CPU can access - the ...
by kieranhj
Tue Jan 15, 2019 11:57 am
Forum: hardware
Topic: New ROM / RAM Expansion Board for BBC B
Replies: 81
Views: 2515

Re: New ROM / RAM Expansion Board for BBC B

Hi Ken - this sounds like an amazing expansion board, great work!

One question I have - how does the SHADOW RAM work; Is it possible to do 'Master style' double-buffering, i.e. have the CPU write to one memory bank whilst the CRTC 6845 video chip reads from the other?
by kieranhj
Mon Jan 14, 2019 4:48 pm
Forum: hardware
Topic: POLL: How much Sideways RAM?
Replies: 20
Views: 623

Re: POLL: How much Sideways RAM?

So great to see everyone showing off about the size of their, err, RAM..! A much broader spread of values than I was expecting (I almost capped the poll at 64K - I'm glad I didn't.) So a conclusion might be that if requiring 16K (1x bank) of SWRAM is going to cover ~90% of the (active) Beeb populati...