Search found 476 matches
- Wed Jan 24, 2024 7:55 pm
- Forum: Hardware
- Topic: Could standard cassette use stereo tracks to double data density ?
- Replies: 21
- Views: 1059
Re: Could standard cassette use stereo tracks to double data density ?
Phase shift keying could have made the 0 and 1 the same length without requiring more bandwidth, and still having an edge per bit (allowing for easy timing recovery, and the wide variability of tape recorder speeds). e.g. you encode a 0 as a low to high, and a 1 as a high to low of the same length....
- Tue Jan 23, 2024 9:32 am
- Forum: Games/Software
- Topic: C.S.S.C.G.C 2024 is/will be/has open/ing/ed
- Replies: 102
- Views: 4575
Re: C.S.S.C.G.C 2024 is/will be/has open/ing/ed
Cool little game! What a novel idea it is, but it's quite tricky to see what's going on at that size, even on an emulator at 2x magnification. My first attempt got me a final score of 2242, just going in little circles to draw and then selectively erase parts. The hardest bit is trying to compensate...
- Mon Jan 22, 2024 1:29 pm
- Forum: Sinclair Miscellaneous
- Topic: Anyone made any 2024 Speccy-related New Year Resolutions?
- Replies: 18
- Views: 761
Re: Anyone made any 2024 Speccy-related New Year Resolutions?
Mine is 256 by 192, same as last year :mrgreen: More seriously, I'd like to get at least one new game out this year. I spent some of 2023 working on porting my Spectrum games over to the PC, so I hope to finish that. In the process, I've had a few PC game ideas that would probably be feasible on the...
- Sun Jan 21, 2024 10:28 am
- Forum: Hardware
- Topic: Main Screen Scrolling Issue
- Replies: 3
- Views: 310
Re: Main Screen Scrolling Issue
Hello Chooks , welcome to the forum! :) I'm not a hardware expert by any means, but have you checked to make sure it's not the television? The rolling you describe makes it sound like your set can't lock onto the vertical sync (the horizontal black bar in your picture). If your TV has settings for v...
- Fri Jan 19, 2024 1:21 pm
- Forum: Emulators
- Topic: BEEP not sounding in ZXSpin
- Replies: 6
- Views: 351
Re: BEEP not sounding in ZXSpin
I've always had this problem with ZX Spin too, in version 0.666, though I've noticed that the ROM beep works when you emulate a 128K Spectrum.
- Sat Dec 30, 2023 4:41 pm
- Forum: Programming
- Topic: getting sound effects out of the beeper
- Replies: 26
- Views: 1035
Re: getting sound effects out of the beeper
Bit 3 controls the MIC output; some emulators will produce sound from both the speaker and MIC. Of course, it's barely audible on a real Spectrum - I need my ear right next to my Issue 2's loudspeaker to hear it.
- Sat Dec 30, 2023 12:15 pm
- Forum: Sinclair Miscellaneous
- Topic: any idea if this book cover is a real game?
- Replies: 1
- Views: 226
- Sat Dec 23, 2023 2:17 pm
- Forum: Brand new software!
- Topic: WOOT 2023 released!
- Replies: 90
- Views: 5972
Re: WOOT 2023 released!
A fantastic early Christmas present! Of the included programs, I've finished Rosetta (a nice little puzzle), half-way through Roasty (have had a break from it after getting trapped in the bottom-left corner of one screen), and am really enjoying Parsley Sage and the 7 Bins of Sunak - it's like a gre...
- Wed Dec 20, 2023 7:37 pm
- Forum: Other Retro Stuff
- Topic: Just a few barely useful Vic-20 games...
- Replies: 4
- Views: 489
Re: Just a few barely useful Vic-20 games...
Did Vic-20 had something like colour clash? Yep, you either had 2 colours per character in high resolution mode, or 4 colours per character in multicolour mode. However, there's some restrictions on how those colours can be used, and I'd say it's actually stricter than the Spectrum. The Wikipedia p...
- Wed Dec 20, 2023 10:08 am
- Forum: Games/Software
- Topic: Games that made good use of FLASH
- Replies: 26
- Views: 1582
Re: Games that made good use of FLASH
Semi OT: is the FLASH interval immutable or is it possible to speed it up? I have some memory flashes (pun intended) of something blinking at faster speed, but perhaps it was a software flash. The FLASH interval is fixed in the ULA - the paper and ink colours are swapped every 16 frames. Anything w...
- Tue Dec 19, 2023 11:11 pm
- Forum: Programming
- Topic: Rockfall: why does this game crash in 128 mode?
- Replies: 31
- Views: 1785
Re: Rockfall: why does this game crash in 128 mode?
[...] There's some strange code which then gets a value from port $38 and then checks the first byte at address 0. If the normal ROM is there this will be $f3. The code returns if this is true or does some other code - which calls $220 which doesn't appear to be a valid ROM address. Maybe some sort...
- Mon Dec 11, 2023 10:00 am
- Forum: Other Retro Stuff
- Topic: Computer Glitch figures
- Replies: 4
- Views: 267
Re: Computer Glitch figures
I'm not sure what the difference between "not enough memory" and "insufficient memory" is, apart from of course it being an excuse to sell more dolls. Perhaps we could have a different "Chuntey Field" figure for each kind of tape loader e.g. a stern looking prison guard...
- Thu Dec 07, 2023 11:41 am
- Forum: Games/Software
- Topic: Games that take place on top of a train
- Replies: 12
- Views: 362
- Tue Dec 05, 2023 3:09 pm
- Forum: Sinclair Miscellaneous
- Topic: UDG advent calendar thread
- Replies: 163
- Views: 5183
Re: UDG advent calendar thread
We need the traditional version of the Xmas tree, where the buyer has once again, for the tenth consecutive year, underestimated the tree height/overestimated their room's ceiling height, when buying the tree. Thus the top of the tree is mashed against the ceiling and teetering to one side. ⬜⬜⬛⬛⬜⬜⬜...
- Thu Nov 23, 2023 8:18 am
- Forum: Games/Software
- Topic: ZX Spectrum game mash-ups that don't currently exist.
- Replies: 40
- Views: 1421
Re: ZX Spectrum game mash-ups that don't currently exist.
I was talking about the ZX Spectrum in the pub last night, and the landlord overheard us and because of his mangled memory, came up with a beauty for this thread: "Do you remember Jet Pac Willy ?!!!" We've already got that: Caves of Doom ;) https://www.youtube.com/watch?v=Lh-dbmx1_t8
- Sun Nov 19, 2023 4:55 pm
- Forum: Programming
- Topic: Can AGD do scrolling?
- Replies: 14
- Views: 644
Re: Can AGD do scrolling?
Could you give a basic explanation how buffering works, or the pros and cons of the two methods? I'm guessing buffering couldn't work for diagonal scrolling? Wikipedia has a nice overview of software and hardware double-buffering. It should be mentioned that the 128K machines are capable of hardwar...
- Sun Nov 19, 2023 2:34 pm
- Forum: Programming
- Topic: Can AGD do scrolling?
- Replies: 14
- Views: 644
Re: Can AGD do scrolling?
Is it dumb of me to ask "Why can't Jonathan Cauldwell just add a scrolling engine to AGD?" :oops: Not at all, it's perfectly reasonable to ask if you haven't the experience to know the answer yourself. We all have to learn somehow :) How hard can it be? Depends on what type of scrolling y...
- Fri Nov 17, 2023 4:19 pm
- Forum: Website
- Topic: UDGs in forum threads?
- Replies: 20
- Views: 578
Re: UDGs in forum threads?
Could use a code block with @ signs (or any similarly "full" character like a hash) and spaces. I'm not sure a whole BBCode plugin for this is a good idea, especially if it ends up breaking in the future. @@@@@@ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @ @@ @ @ @ @@@@@@ Perhaps have some reference ...
- Thu Nov 16, 2023 9:43 pm
- Forum: Other Retro Stuff
- Topic: Trying to find old YouTube video of arcade machine restoration
- Replies: 2
- Views: 114
Re: Trying to find old YouTube video of arcade machine restoration
Apparently I hadn't looked hard enough, as I found the video this evening: https://www.youtube.com/watch?v=CWYaz1HOkzw I'm still not sure why I had such trouble searching for it earlier, but either way, I'm glad to have the link now :) As for that channel rnhunt , they have some interesting stuff on...
- Thu Nov 16, 2023 8:09 am
- Forum: Other Retro Stuff
- Topic: Trying to find old YouTube video of arcade machine restoration
- Replies: 2
- Views: 114
Trying to find old YouTube video of arcade machine restoration
I've been looking for it but can't seem to remember the title - it might not even be up anymore, but I suppose some members here might have watched it too and may have the link bookmarked. Basically, the video was a slideshow presenting the restoration process of a Radar Scope arcade machine. The ca...
- Fri Nov 10, 2023 7:55 am
- Forum: Brand new software!
- Topic: Stereogram Demo
- Replies: 21
- Views: 748
Re: Stereogram Demo
For those of us with eyes which can't/won't defocus properly, there's a Javascript tool that lets you simulate the viewing experience here: https://piellardj.github.io/stereogram-solver/ Obviously, you can't get the 3D effect this way, but you can get a sense of the image's depth by tweaking the dis...
- Sun Nov 05, 2023 6:14 pm
- Forum: Games/Software
- Topic: Which games use teleporting ?
- Replies: 103
- Views: 3218
Re: Which games use teleporting ?
Of the newer homebrew games, Cosmic Payback uses them pretty frequently, with a few puzzles built around their characteristics.
[self-promotion ends here]
[self-promotion ends here]
- Sun Nov 05, 2023 11:52 am
- Forum: Brand new software!
- Topic: BLAM! - *RE-RELEASED* ZX Spectrum 48K and 128K game from 1992!
- Replies: 4
- Views: 225
Re: BLAM! - *RE-RELEASED* ZX Spectrum 48K and 128K game from 1992!
I think "re-released" in this context means that it's now available on itch.io. The tape from the new webpage is identical to the one in the SC archive.
- Thu Nov 02, 2023 10:04 pm
- Forum: Games/Software
- Topic: Elaborate death in games
- Replies: 11
- Views: 453
Re: Elaborate death in games
Sir Lancelot has all three elements you mention. It takes ages for the animation to finish, you really need pokes to make the game bearable.
- Thu Nov 02, 2023 9:32 am
- Forum: Sinclair Miscellaneous
- Topic: How many ZX tapes should a respectable collector own?
- Replies: 12
- Views: 378
Re: How many ZX tapes should a respectable collector own?
For questions 1 and 2, the answer is "quality over quantity". A well rounded and carefully considered collection is surely worth more than a thousand copies of Make-a-Chip.