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XYZ - a multithreaded GUI operating system for SpeccyToday I'm re-starting my unfinished project. A few years ago I wrote the yx multitasking kernel (which includes RAM/ROM versions, threads, memory man…
Does FUSE emulate ULA snow? I know a lot of ... not impossible, to do without ULA snow as far as I am ... -
ULA RAS, CAS cycles, refresh and "snow effect"Hello everyone. I have a question, does anyone observed timings of RAS and CAS generated from ULA? I think there may be answer to where the "snow ef…
... ULA? I think there may be answer to where the "snow ... Ramsoft incorrectly states that ULA doesn't stop CPU ... [LIST=1]
[*]The ULA address drivers do not open ... I'm curious what exactly ULA is doing then.
ULA. The address while bytefetch ... -
ULA bug and snowI am tryng to improve the snow emulation in FBZX wii but I do not have a real spectrum to test the results. I used the information taken from Harele…
... am tryng to improve the snow emulation in FBZX wii but ... emultor is writing in the ULA video register the second screen ... -
+2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…
... :
[quote]The ULA bug which causes snow when I is set ... .[/quote]
Will the ULA bug appear on the Spectrum ... -
Smooth (vertical) scrolling on ZX SpectrumI was just thinking about this. You know, you have systems like Atari 2600 or Sega SG-1000 that have no hardware scroll, but they have games that sti…
... (probably full 50 fps) vertical scrolling. Games like Monaco GP (SG ... Spectrum games have all jerky scrolling when it is about to ... to do the tricks within ULA display time.
I ... guy that could do the scrolling smooth - J. Smith but then ... -
Exact emulation of the Snow effectAs the original post on another forum is outdated, and for those who don't know about that forum, I duplicate this info here: At the beginning of …
... details of the exact snow effect emulation after publication ... was first implemented, and my snow effect tests, which are ...
Now about the snow phases. Snow phase means how a 4 ... drawing cycle, the ULA works normal, without snow and duplicate.
... -
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... /> But yes, it's hardware scrolling. No writing to the screen ... />
Has Woody found a way to stall ULA access to the ... -
The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... image displacements gives a nice scrolling effect though, and it ain ... done in software. So hardware scrolling sounds much better :)
ULA, contrary to bit 7 of R being specified in RS' snow ... a rock steady display in "snow" mode. From there you can ... -
RealXThis may be a dumb question but will RealX ever get released?
... asking Woody about this - he made the tests, and the "snow contention ... algorithm for determining where the ULA reads display/attr bytes from ... /> We only studied the 128K ULA directly, not the 48K one ... is to know about the ULA!
[/QUOTE]
You might ... -
RealXThis may be a dumb question but will RealX ever get released?
[QUOTE=Woody]Dunny likes to call ... outside of M1 cycles as snow contention. But only when ... it causes the snow.[/QUOTE]
In RS ... quoted:
[quote]...the ULA gets confused by the memory ... is asserted by the ULA immediately after the rising ... -
ISR's in lower ram, a.k.a. the snow effect - did any game or demo ever use this?Hi all I've been curious to see what the 'snow effect' looked like in real life for a while now so today I wrote a quick IM 2 ISR in lower ram to wi…
Woody and I worked out that ... hardware character scrolling as one of the tests for the snow effect ... -
ISR's in lower ram, a.k.a. the snow effect - did any game or demo ever use this?Hi all I've been curious to see what the 'snow effect' looked like in real life for a while now so today I wrote a quick IM 2 ISR in lower ram to wi…
[QUOTE=Dunny;597518]Woody and I worked out that ... hardware character scrolling as one of the tests for the snow effect ... controlled snow displacement. I know woody's tests, you can freeze snow on ... enhance multicolour pictures by using snow effect? -
Snowfall effectHow do you go about creating a snowfall effect like the one in Yeti? Now don't laugh, I'm currently printing 32 UDG's of dots OVER the top of my gam…
... of the extra colours there, ULA+ is of more interest to ... it I would use the scrolling routine as is, but just ... snowball down. That way the snow will appear to be falling ... -
ZX Spectrum EmulatorsI'm putting together a (hopefully) comprehensive list of all ZX Spectrum emulators available for the new WoS site. Obviously we'd like the latest …
... ) or do a soft vertical scrolling.
That is not ... but CRTC (in this case, ULA). That trick can be done ... was actually thinking of the ULA.
[/quote]
How ... ]
Somebody has to, even Woody isn't speaking to you ... -
ScrollingBit of a daft topic but anyway... Which game had the best scrolling? I would have to volunteer Commando and its silky-smooth scrolling. A particula…
... ... Which game had the best scrolling? I would have to volunteer ... Commando and its silky-smooth scrolling. A particularly bad effort was ... -
WANTED: 128k+ or 128k +2(early grey mod.) ULA chipHello, Attempting to repair my 128k+ speccy. Needs a ULA(IC1)chip from either a 128k+ or an early +2 will work also. If anyone has this chip or has a…
... 128k+ speccy.
Needs a ULA(IC1)chip from either a ... 's broken(other than the ULA), please give me a shout ... -
Best scrolling shooters on speccy?I think one of most popular genres, besides mazes, was scrolling shooter. Can you remember any favorites to recommend, besides r-type
I think one of most popular genres, besides mazes, was scrolling shooter. Can you remember any favorites to recommend, besides r-type -
ZX81 ScrollingI'm tempted to have a go at a bit of ZX81 programming, using MCODER II, though I could really use a fast multi-directional scrolling routine. Does a…
I'm tempted to have a go at a bit of ZX81 programming, using MCODER II, though I could really use a fast multi-directional scrolling routine.
Does anyone know of any anywhere that I could pinch? -
Super Crap Invaders - a super crap review by mel the bellSuper Crap Invaders - a super crap review by mel the bell Meet Miner Willy the unsuspecting star of a brand new spectrum game Super Crap Invaders wi…
... excellent, clear, well defined, colourful, scrolling text, and Miner Willy and ... Pacman? errrrmmmm :)
Thankyou Woody we salute you. -
Best scrolling everHi All - I've been lurking here for a while enjoying reminiscing about my magical 10 years of rubber-keyed fun back in my youth! What game featured …
... :
1) Full colour scrolling e.g. Lightforce - difficult ...
The full-colour scrolling in Lightforce is smoother than ... and did smooth monochrome scrolling both horizontally in Uridium and ... from the jerky blockwise scrolling. Probably the best was ... -
IM 2 interrupts and smooth scrolling - easy peasy!Okay, been fiddling around with IM 2 and have actually mastered (I think) how to use IM 2! Now I run my game Ragnar Revival in IM2 and use HALT to sy…
... for synchronizing screen manipulation (a scrolling text) using HALT, and one ... -
Smooth Screen ScrollingHi Everyone, Any suggestions on what is the best way to do horizontal scrolling ie. in Zynaps fashion. I am working on a routine at the moment, whi…
Smooth Screen Scrolling RoutineHi everyone, this is a follow up to the thread on smooth screen scrolling. As promised here is the code for the routine. It's pretty long and fairl…
... the thread on smooth screen scrolling.
As promised here ... /> RR L ;but we are scrolling 2 pixels
SRL H ...Cobra - scrollingHi everyone, I have been studying some of the code in Ocean' Cobra game using a debugger, in the hope of improving my own scrolling routines. In cas…
... hope of improving my own scrolling routines. In case your not ... IMO some of the best scrolling i've seen in a ...check out pics of my woody[url="http://homepages.tesco.net/mel_the_bell/files/misc_pics/woody.jpg"]http://homepages.tesco.net/mel_the_bell/files/misc_pics/woody.jpg[/url] [url…
... .tesco.net/mel_the_bell/files/misc_pics/woody.jpg"]http://homepages.tesco.net ... /mel_the_bell/files/misc_pics/woody.jpg[/url]
[url="http ...Vertically Scrolling Shoot-em-upsHi everyone, I want to put together a list of vertical scrolling shoot-em-ups. I have most of the well known ones (see list) on it already, but i'm …
... together a list of vertical scrolling shoot-em-ups. I have ...Flicker on my scrolling demo, any ideas?I have created a scrolling demo downloadable from [url="http://www.peargames.co.uk/downloads/scroll.z80"]http://www.peargames.co.uk/downloads/scroll.…
I have created a scrolling demo downloadable from [url="http:// ... [/url] (.z80) which demonstrates my scrolling engine.
It uses ... second to run (The actually scrolling takes just under 1/50th ...First game with scrollingMany games are just a bunch of static screens - you have to exit one screen to see another (for example Manic Miner, Saboteur, Bruce Lee). But there …
... go in any direction the scrolling begins (for example RoboCop). I ... the first Spectrum game with scrolling.
[ This Message was ...ULA schematicsHi everyone. Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lost the files…
... innards of the Speccy 48K ULA. Sadly I've since lost ...Parallax scrollingIt's about time to start new "games with" topic! So, let's make a list of Spectrum games with parallax scrolling. 3 titles to begin: Cobra Hysteria S…
It's about time to start new "games with" topic! So, let's make a list of Spectrum games with parallax scrolling.
3 titles to begin:
Cobra
Hysteria
Shadow of the beast
