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- Sat Jul 23, 2022 3:11 pm
- Forum: Website
- Topic: NEW THEME! for the Spectrum Computing Forums
- Replies: 153
- Views: 5330
- Thu Jul 21, 2022 9:59 am
- Forum: ZXDB Discussion
- Topic: What happened to the permission slips?
- Replies: 21
- Views: 637
Re: What happened to the permission slips?
You can't post private communications (such as emails) on a public site. Especially now, with privacy regulations adopted in most countries.
- Mon Jul 18, 2022 9:56 am
- Forum: Design/Ideas
- Topic: basic demake prototype
- Replies: 1
- Views: 342
Re: basic demake prototype
I get the first location with a flashing cursor but I can't move it. What are the keys ? Does it use mouse?
The graphics could be much better - there's good autoconversion software around, but more on that later. For now, I'd just like to be able to click on something...
The graphics could be much better - there's good autoconversion software around, but more on that later. For now, I'd just like to be able to click on something...
- Tue Jul 12, 2022 7:20 pm
- Forum: Emulators
- Topic: Incorrect colours in emulators
- Replies: 8
- Views: 368
Re: Incorrect colours in emulators
The Spectrum generates an analog PAL signal, with colours very similar to test pattern generators common at that time. If you look at the EBU/IBA colour bars (https://en.wikipedia.org/wiki/EBU_colour_bars) you find a similar 100% / 75% luminance set of saturated RGB bars. That's similar to the Spect...
- Tue Jul 12, 2022 12:03 pm
- Forum: Announcements
- Topic: ZX Spectrum- It Lives!!!
- Replies: 76
- Views: 2865
Re: ZX Spectrum- It Lives!!!
Indeed, it might be a colour space /colour profile issue. The default colour space format for internet images is sRGB, but that's an old standard. Many devices now use wider spaces, and browsers / operating systems will convert them for display. For example, here's a colour cube encoded as sRGB: htt...
- Mon May 16, 2022 10:14 am
- Forum: Website
- Topic: Why is software search so hard for anyone to do?
- Replies: 21
- Views: 1824
Re: Why is software search so hard for anyone to do?
Try searching for stuff on the US National Archives: https://catalog.archives.gov/search?q=%22apple%20II%22 It doesn't live up to the expectations, and I'm sure they have more money and people :lol: In short "Why" is because the manpower and time required are outside the scope of an amateu...
- Fri May 13, 2022 9:09 am
- Forum: Preservation
- Topic: Gloops
- Replies: 1
- Views: 185
Re: Gloops
Some reason for the alternate palette used on these screenshots? Did the Spectrum look like this when connected to a SECAM TV ?
- Tue May 10, 2022 3:32 pm
- Forum: Website
- Topic: More smilies?
- Replies: 36
- Views: 1038
Re: More smilies?
Some trivia about emoticons and graphical Unicode characters. Some early smilies ( ☹ ☺☻ ) were codified back in 1991: https://en.wikipedia.org/wiki/Miscellaneous_Symbols Emoticons are implemented in Unicode since 2010: https://en.wikipedia.org/wiki/Emoticons_(Unicode_block) https://en.wikipedia.org/...
- Tue May 10, 2022 3:05 pm
- Forum: Preservation
- Topic: Chevalier Arthur
- Replies: 3
- Views: 440
Re: Chevalier Arthur
Semigraphics Very interesting to see french software! They had original and imaginative titles, at least for other machines.
- Sat Apr 16, 2022 3:32 pm
- Forum: Website
- Topic: Broken screenshots
- Replies: 197
- Views: 6156
Re: Broken screenshots
Ground Attack fixed
- Fri Apr 08, 2022 5:15 pm
- Forum: Preservation
- Topic: CP/M soft
- Replies: 6
- Views: 225
Re: CP/M soft
We have non-spectrum software already (Jupiter Ace), don't think it's a problem. And a few CP/M titles are already listed.
But I agree that having many titles as regular +3 software might be confusing. We might need a new hardware category, perhaps "+3 CP/M" ?
But I agree that having many titles as regular +3 software might be confusing. We might need a new hardware category, perhaps "+3 CP/M" ?
- Thu Mar 31, 2022 8:53 am
- Forum: ZXDB Discussion
- Topic: How take Loading and Running Screens?
- Replies: 11
- Views: 1692
Re: How take Loading and Running Screens?
You need to handle image display on your end, as ZXDB will only provide relative paths and in most cases native formats. Each ZXDB site/app handles paths and image conversions differently, with custom solutions as needed. Linking to existing sites is not a good practice, because of increased traffic...
- Thu Mar 31, 2022 8:29 am
- Forum: ZXDB Discussion
- Topic: New Database Model ZXDB
- Replies: 536
- Views: 108908
Re: New Database Model ZXDB
I'll let Einar answer, but let me add that some running screens are also SCRs. In some cases, other spectrum formats are used in order to preserve multicolor information.
This is done from a preservation point of view, as we are interested in storing all of the original data to the bit level.
This is done from a preservation point of view, as we are interested in storing all of the original data to the bit level.
- Wed Mar 30, 2022 2:05 pm
- Forum: ZXDB Discussion
- Topic: How take Loading and Running Screens?
- Replies: 11
- Views: 1692
Re: How take Loading and Running Screens?
Check ZX-Image:
PHP-based ZX Spectrum images parsing into PNG/GIF. Supports animation, supports file caching.
https://github.com/moroz1999/zx-image
PHP-based ZX Spectrum images parsing into PNG/GIF. Supports animation, supports file caching.
https://github.com/moroz1999/zx-image
- Thu Mar 24, 2022 11:29 am
- Forum: Games/Software
- Topic: Spain on the ZX Spectrum
- Replies: 34
- Views: 1258
- Tue Mar 22, 2022 1:33 pm
- Forum: ZX Spectrum Next
- Topic: A new graphics mode for Next?
- Replies: 39
- Views: 1249
Re: A new graphics mode for Next?
Simply design Spectrum compatible graphic assets (respecting attributes and palette) but disregard any limitations for scrolling or sprite animation.
- Tue Mar 22, 2022 12:36 pm
- Forum: Brand new software!
- Topic: Rubinho Cucaracha
- Replies: 18
- Views: 1072
Re: Rubinho Cucaracha
Brilliant graphics and smooth gameplay. Really good!
- Fri Feb 25, 2022 4:54 pm
- Forum: Graphics
- Topic: 8-bit camera & images online
- Replies: 14
- Views: 754
Re: 8-bit camera & images online
Very interesting!
Having programmed a similar app, I recommend measuring colour distances using non-RGB colour spaces. Will come in handy when you dithering across attribute cells. You can consider each cell as having its own 2 colour palette. It's the only way to get decent results
Having programmed a similar app, I recommend measuring colour distances using non-RGB colour spaces. Will come in handy when you dithering across attribute cells. You can consider each cell as having its own 2 colour palette. It's the only way to get decent results
- Mon Feb 14, 2022 9:57 am
- Forum: Graphics
- Topic: Python based Spectrum graphics utility
- Replies: 2
- Views: 209
Re: Python based Spectrum graphics utility
Very interesting!
Can be taken a step further: saving/loading the memory dump as a PNG so you can edit graphics.
Can be taken a step further: saving/loading the memory dump as a PNG so you can edit graphics.
- Tue Feb 01, 2022 11:52 am
- Forum: Brand new software!
- Topic: Javi Pomez y la camara no secreta
- Replies: 14
- Views: 777
Re: Javi Pomez y la camara no secreta
"cámara" here means chamber
It usually means a photographic camera, but not in this context.
In Portuguese, the word is similar ("câmera") and has the same meanings.
It usually means a photographic camera, but not in this context.
In Portuguese, the word is similar ("câmera") and has the same meanings.
- Sun Jan 30, 2022 1:03 pm
- Forum: Graphics
- Topic: Are the Speccy's pixels actually square?
- Replies: 23
- Views: 817
Re: Are the Speccy's pixels actually square?
Conceptually the pixels are square. The TV signal was generated with this assumption in mind: generate a 4:3 central area made up of square pixels. There were some minor deviations (like white/black not having exactly the same dimensions) but they are too small to notice. To avoid any confusion betw...
- Fri Jan 28, 2022 9:04 am
- Forum: Graphics
- Topic: Showcasing my graphics
- Replies: 430
- Views: 35700
Re: Showcasing my graphics
Very good work!
- Wed Jan 26, 2022 11:07 am
- Forum: Showcase your work!
- Topic: DKRX new sprite engine
- Replies: 35
- Views: 1558
Re: DKRX new sprite engine
But clashing with the red girders would be horrendous. I think the key is to accept colour clash and minimize the effect through a good choice of colours. » White/yellow, red/magenta or black/blue have low contrast between them, so clashing between these is not problematic. » Yellow/cyan don't cont...
- Fri Jan 21, 2022 4:30 pm
- Forum: Sinclair Miscellaneous
- Topic: Unevenly scaled pixels in screenshots/videos
- Replies: 33
- Views: 1059
Re: Unevenly scaled pixels in screenshots/videos
There's a trick for upscaling to uneven factors and partially retaining the pixel art look ;) First, you do a large nearest neighbor upscale, to 400% or 600% of the original size. After that, you do a normal downscale (using normal interpolation/anti-alias) to the desired arbitrary size. 100% Origin...
- Wed Jan 19, 2022 3:11 pm
- Forum: Sinclair Miscellaneous
- Topic: Unevenly scaled pixels in screenshots/videos
- Replies: 33
- Views: 1059
Re: Unevenly scaled pixels in screenshots/videos
The simplest approach is to consider square pixels and use integer scaling - 1x, 2x, 3x, etc. Interpolation on both axes is problematic, because that's not how CRTs worked... CRTs displayed a raster image, with some value averaging along each line - a sort of horizontal "pixel" smearing - ...