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ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…
How is this feature implemented in emulators ? And how exact is the emulation ?
I somehow supposed that ULA snow is something that is not very deterministic in nature. But if one can emulate it (perfectly ?) then i was wrong. -
The I register pointing to $40–$7f causes ULA snow and a crash. Or does it?I have heard it from numerous sources, including a few members of this forum, that 128K/+2 machines crash if the I register points to a range of $40–…
... no avail. I get the ULA snow, sure thing, but that’s ... -
ula bookula book is here: [url]http://www.zxdesign.info/book/[/url] can i post sam coupe stuff here - she kind of is a speccy if you stuff the speccy rom i…
ula book is here:
[ ... this is not described as ula snow - the description of that is ... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ... -
SPIN Public Beta 0.1b Available for downloadHi all, back again, and as just recently announced on CSS, SPIN has been updated. Here's the post to CSS (or the relevant parts): It's been a bu…
... and drop support.
Added ULA Snow effect, and Floating bus based ... ?
Thanks,
Dunny+Woody. -
ZXSpin 0.61 Available nowHi all! Well, after a lengthy few testing cycles, I'm taking the plunge and uploading the latest version of ZXSpin, to replace the rather aged old 0…
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- Added much more accurate "ULA snow" and IR contention. Note that ... truly accurate snow is probably not an option ... me!
- Marko and Woody fixed a load of bugs ... -
ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... 0x40-0x7F then the ULA gets confused by the ... memory address generated by the ULA (who wants to read ... two addresses. Therefore the ULA reads the data from an ... is actually read by the ULA is the following:
ULA is busy drawing the border ... -
Interrupts, 16k Spectrums and snowI'm writing something for the 16k Spectrum and I want to use interrupts. The avilable documentation doesn't seem clear enough for me to figure out ho…
... .
The problem is ULA snow. Snow appears if the I register ... I can use. But does snow happen on a 16k Speccy ... 48k machine.
If snow _is_ a problem on 16k ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... here..
didnt the snow effect only occur on the ... that happening on a sideways scrolling footbal game demo on a ... release. does spectaulator emulate this ULA snow effect?
[ This Message ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... $7eff.
As Woody says, the snow effect appears when I ... repeat as the ULA got confused)
(Woody - I couldn't ... reproduce this even with 'emulate ULA snow' turned on?)
The ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
[quote]
On 2003-08-08 00:18, needlej wrote:
(Woody - I couldn't get SPIN to reproduce this even with 'emulate ULA snow' turned on?)
[/quote]
GFX.SnowEffect := (Registers.I >= 64) and (Registers.I -
RealXThis may be a dumb question but will RealX ever get released?
... a real 48k speccy and Woody's determined hacking, we've ... a good understanding of how ULA snow really works. And in doing ... applied during this period is "snow contention".
Your ... the address the ULA uses to build up the "snow" is formed ... -
RealXThis may be a dumb question but will RealX ever get released?
... asking Woody about this - he made the tests, and the "snow contention ... that what Woody has discovered has revealed how the ULA snow works, which ... your friend matches the values Woody obtained from our real 48k ... real 48k too.
Woody has sent a lot of ... -
CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…
... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ... -
CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…
... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ... -
CSS has been Rogeredcomp.sys.sinclair has just been rogered. I make do with a summary when anything happens and activity shot up on Friday. Turns out to be the usual qu…
... which is what i thought ula snow was whereas that is described ... /> has anyone seen the hardware scrolling the orgininal cpc had(not ... -
New Game! Maritrini, Freelance Monster SlayerAfter experiencing the sweet taste of success, Maritrini woke up one fine day in a mess of bed sheets and with the biggest hangover she could remembe…
[QUOTE=Woody;629949]
Always did wonder ... the 128K/+2 machines with ULA snow enabled but without knowing exactly ... -
ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... =17551&highlight=ULA+Snow"]this[/URL] thread:
Woody said:
[quote]
For anyone interested in implementing the snow ... effect, this 48K machine here uses ULA address for ... -
The Infeasible GameMy new game will be available early next year. One or two little bits to sort and then I need to play test all the levels. For now, here is a short v…
... ]
as woody says it's the ULA snow (or sometimes called ... one), you can turn the snow effect on and off in ... -
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... a couple of levels of ULA snow emulation - RealSpec makes a ... last looked into it with Woody - a 1Tstate accuracy level, ... Woody has done something awesome that mitigates that. Even then, the snow ...
Achieving 100% snow accuracy alone would push the ... -
ZX Spin 0.4 available for Download.Standard Cut-n-Paste from the CSS post: If all goes well, I'll upload it to WOS on monday. ----------------------------------------- Okay, it's th…
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Fixed a bug with ULA Snow and a reset - also demos ... -
list of ZX games with raining effect(ula snow)If you know any ZX games with raining effect in screen, then add game name to list. I know about this games only: (tested on real ZX128+2 - grey) 4x…
If you know any ZX games with raining effect in screen, then add game name to list.
I know about this games only: (tested on real ZX128+2 - grey)
4x4 puzzle
at4open
black raven
breditor
death valley
gambit< ... -
interface1discipleanyone manage to virtually connect two emulators running on the same machine? could zx spin be modified to replay two rzx files simultaneously? any o…
... an lcd screen - think the ula snow comes thru ? -
emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... but now dot crawl and ula snow - though these are not the ... reader please help
the ula+ is only for the harlequin ... time or with the spectrum ula a whole third of the ... -
Strange behaviour in real hardware but not in emulatorsWell, at least not in any emulator I've tried. I've been reported by fellow forum member Macc that both our Maritrini Monster Slayer and Retroworks'…
... problem in emulators, unlike the ULA snow effect which can be reproduced ... between $C0 and $FF, the ULA gets confused and crashes can ... -
Zero 0.5 ReleasedAfter a bit of a hiatus, the next update of Zero is now available [URL="www.ramtop.wordpress.com"]here[/URL]. Feedback and bug-reports appreciated! …
... opcodes (Woody).
- Fixed IN contention (Woody).
- Fixed ULA PLus ... state accurate core and renderer (Woody).
- Fixed timing ... ), HL/IX/IY instructions (Woody).
- Fixed spectrum reset ... a stray page pointer issue.(Woody)
- Fixed ... -
TV Pal, odd and even framesI have been researching, but haven't found any real interesting information on this subject, so far. What I mean is, since TV PAL signal is interl…
... frame (odd or even) the ULA is currently pushing out ?"
ULA snow effect, and maybe prevent us ... external hardware, matching the addresses ULA is fetching at the end ... />
I have bought the ULA book, but have not started ... -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
Ramsofts' Real Spectrum emultor in DOS emulated the ULA Snow effect. Perhaps give that a try ?
Regards
Andy Barker -
Is spectaculator emulating the +2 correctly?i remembera few games that would crash when running in 128K mode, due to a bug in the hardware of the grey +2, hence it being replaced with the +2a. …
... emultor in DOS emulated the ULA Snow effect.
[/quote]
... 't actually emulate the ULA Snow, and I do know ... that SPIN's snow is derived from the ... actually known about the snow effect, this is the ... entirely possible that the snow in SPIN is borked. ... -
EmuZWin 2.5.0.1Version 2.5 Release 1.0 (10-Jun-2004): a lot of changes and fixes in ??? Map Builder ??? GFX Editor ??? Loading & Saving ??? Sound & Video ?? Speed…
... . A small bug produced some ULA snow (I can't believe you ... -
Suggestions for games to test emulators?I'm going to be doing a comparision of a few different emulators, and was wondering if anyone had good suggestions of games to use as a 'benchmark' t…
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Not to mention the ULA snow effect it uses... You'll ...
