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Spectrum AssemblyHi All, Thanks for letting me in... lol Over the last couple of days I started playing my spectrum emu again and then I started thinking about lear…
... screen vertical scroll:
[CODE] ld hl, (lines+2)< ... repeat for remaining lines
...
ld hl, (lines+382)
... ld de, (lines+380)
ldi ... code goes here
lines: dw 16384, 16440, ...
... -
Pussy - on sale againNo, it is nothing sick, it is just: european users can now buy "Pussy-the Titanic love story" on my homepage [url]http://lcd-one.da.ru[/url] again (p…
... (first frame - even lines from first page, odd lines from second page ... real interlace mode doubles the vertical resolution.
Hardware based flickering ... -
Interlace demoSorry to reference another thread like this, but in the thread: [url]http://www.worldofspectrum.org/forums/showthread.php?p=313428#post313428[/url] …
... ;313810]Aren't those scan lines photographic artifacts? I remember photographing ... best. That horizontal dark/light lines is screen refresh, it's ... the point. Focus on the vertical bars 8 attr width (see ... -
Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... actual border-lines; the others may be either border or vertical retrace ... .
Then the 192 screen+border lines are ... displayed, followed by 56 border lines again. Note that this means ... -
Difference in emulator screen sizes and coloursSeeing as Greencard's gone out drinking... I've done a comparison between Spectaculator and ZXSpin. ZXSpin's full screen with border is taller than S…
... the number of visible video lines you'd actually see on ... colour in those extra 8 lines or is what Spin shows ... is, we know how long vertical retrace is. Again, all verifiable ... known quantity. It's 296 lines. After that, the retrace starts ... -
Please help an absolute novice with some simple(ish) programming.I'm very, very rusty at BASIC. I'm using BASin, for my GCSE Astronomy coursework [quote] Use a spreadsheet and/or a graphing package, or write a com…
... can write in about 5 lines a program doing it. It ... . We have horizontal axis and vertical axis.
IF horizontal ... axis> vertical axis the elipse look like ... -
Atic Atac speed.Dear all, Excuse the noob question, but does anyone know how fast Atic Atac runs at? What I mean is, frames per second, or the amount of pixels the…
... believe the game waits for vertical retraces to ensure smooth animation ... at least the occational blank lines) are visible.
Best ... -
Timex 1000 PAL conversionHi, a friend of mine sent me a Timex 1000 from the US. I was prepared for the NTSC/PAL issues so no surprise came to me when i got a shadowy dark scr…
... scrambles the TV putting horrid lines in the screen? Well, the ... ]PAL / NTSC, and the holy Vertical Frequency[/B]: It is true ... to set it to 50Hz vertical freq. If you pull it ... ]M[/B] norm uses as vertical frequency. Also, IIRC, my own ... -
Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…
... here... : ULA determines scanline count, vertical refresh rate together with used ... PAL phase switch in alternate lines (even/odd), as it is ... -M/N (PAL with 60Hz vertical refresh, actually PAL with NTSC ... -
SCREEN$ 1.9e Released!And here's another update! [url]http://paul.dunn.googlepages.com/SCREEN_1.9e.rar[/url] There's a few new things in this release, but it's mostly bu…
... colour modes give vertical striping
[*]1280x1024x16 ignores scan lines
[*]1280x1024x8 ... -
SCREEN$ 1.9e Released!And here's another update! [url]http://paul.dunn.googlepages.com/SCREEN_1.9e.rar[/url] There's a few new things in this release, but it's mostly bu…
... /> [*]32-bit colour modes give vertical striping
[/list][/quote]
[list]
[*]1280x1024x16 ignores scan lines
[*]1280x1024x8 crashed[/LIST]Thanks ... to find out why this vertical striping appears on some cards ... -
Brand new River Raid remake?one of my friend is trying to make a riverraid remake on flash just to have fun, I checked zx spectrum port of river raid. it is bad, really bad, jer…
... image, plays a tune, makes vertical scrolling, scans the keys o ... it draws odd & even lines seperately, decreasing the needed bandwidth ... to create almost full raster lines, but as you say, it ... -
River Raid Tech DemoJust a little something to look at. Enjoy. [URL="http://www.joefish.co.uk/speccy/Joefish_River_Raid_Tech_Demo_01.tap"]Joefish_River_Raid_Tech_Demo_…
... attributes only vary every two lines, with the right side attributes ... working on ideas for a vertical-scrolling shooter better suited to ... -
DVD regions, why?Why do we have to put up with DVD region encoding? I mean, I know why they were invented (so the DVD companies could control the market, and incident…
... PAL - PAL has a higher vertical resolution. It's much easier ... here to play the lower vertical resolution US DVDs, and most ... but at 525 lines/ 60Hz instead of 625 lines / 50Hz - pretty much ... can't deal with 625 lines. My 16 year old Sony ... -
Battle of the retro songs!I present you: The new release: Aqua - "Back To The '80s" [youtube]kw5s3CB_1pE[/youtube] The previous king of the retro songs: Bowling For Soup - …
... logic is relegated to the vertical blank.
In the ... used: during the 192 display lines, sync code would be used ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... useless) one was vertical hardware scrolling by 8 lines, by shifting the ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... useless) one was vertical hardware scrolling by 8 lines, by shifting the ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... switching to hide the extra lines.
I did bottom ... allowed for line-by-line vertical scrolling).
I had ... -
I just picked up a free Atari 520stJust got a free 520ST, (no cables or leads) and a small box load of games. :? dunno what to do with it, but it was being thrown out, so I grabbed it…
... switching to hide the extra lines.
I ... allowed for line-by-line vertical scrolling).
... for the top few lines of the display with ... hide the top few lines with a palette switch ... This allows for a smooth vertical scroll in pixel increments, ... -
UDG PaperI remember having a few rare sheets of coarse graph paper with 8x8 grid squares that I sketched loads of UDGs on, and the more normal 10x10 grid pap…
... had to ink in 8x8 lines myself.
Here's ... or vertically, with thicker grid lines at any multiple you want ... /> bold every 8 lines.
[SIZE="3"]Vertical Size:[/SIZE]
0.005 inches.
bold every 8 lines ... -
New BUZZSAW+ Demo, No.2OK everybody, here's the latest demo of [I]Buzzsaw[/I]. This includes the title screen I wrote in Corfu with control selection, some new sprites and…
... . And the slog with a vertical shooter is laying out all ... beat-em-up along the lines of [I]Thundercats[/I] or ... -
How do you destroy an enemy or object?Hi guys I allways wanted to know this, but how would you go about making and destroying enemies in basic or any language? What, do you use a huge ar…
... in every 4 vertical pixels to double the vertical colour resolution. If ... available code to draw sprites, lines, print text etc in fixed ... in place of the four vertical pixel busy wait. So the ... are executed during those 4 vertical pixel waits. Doing things this ... -
Double Dragon 128k - The graphicsAs you are all probably aware, I tried gathering a team of people together a few years back to make a totally re-programmed version of Double Dragon …
... and on 1 pixel in vertical direction. if you start think ... line depends on its neighbours, lines are almost indepedent on other ... lines. so if you want to ... -
Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…
... actual border-lines; the others may be either border or vertical retrace ... -
LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…
... buffer.
For a vertical scroll, move the point you ... copying from down a few lines, then when you get to ... as described above for a vertical scroll. -
Mr Do! ?Not exactly a new idea (at least twenty-seven years old now :-o), but how about a port of Mr Do! to the Spectrum? There was never an official one, ev…
... correctly makes the spectrum 8 lines too short to do it ... />
the problem is the vertical playing area.... or lack of ... -
Who can repair a 48K Spectrum?My Spectrum is broken, please see: [url]http://www.worldofspectrum.org/forums/showthread.php?t=29351&highlight=7805+heat+sink&page=2[/url] Does anyb…
... all I got was 4 vertical black and white bars filling ... and blue and red loading lines in the border.
Getting a ZX Spectrum to work in the USHello all, I'm terribly new to these forums but not to the use of the Spectrum. I have a few in my collection of old machines and one of them I am …
... number of scan per field, vertical frequency and so on, a ... better if you use the vertical size knob to expand the ... the expense of vertical frame colour resolution. [B]Lines where the colour ... called PAL or phase-alternation lines, which justifies one of the ...
