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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–…
... machines crash if the I register points to a range of ... avail. I get the ULA snow, sure thing, but that’s ... -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... since I got it working. Snow on the screen. Particularly on ... . it's not the I register or the tuning - as it ... .no-ip.com/speccy-pics/snow.jpg[/url]
[url ... -
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 ... writing in the ULA video register the second screen byte it ... cycle and if the I register is between 0x40 and x7F ... byte the value of R register.
This emualtes the ... -
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…
... problem is ULA snow. Snow appears if the I register points to somewhere ... I can use. But does snow happen on a 16k Speccy ... 48k machine.
If snow _is_ a problem on 16k ... -
Exact emulation of the Snow effectAs the original post on another forum is outdated, and for those who don't know about that forum, I duplicate this info here: At the beginning of …
... /48/128/+2 machines snow appears if register I contains a value ... a question of register R's participation in the snow effect.
snow effect you need to make sure that the register I ... … $BFFF (register I within $80… $BF) — on machines with snow it's ... -
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…
... during the first effect (snow screen, then eyes scrolling up, then the ... phrase "GET DOWN" scrolling down). This also happen in ... happen the moment the palette register is changed, but also on ... -
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 ... -
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? -
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 ...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 ...Is the IY register used by the spectrum rom?Hi I've been writing a sprite routine and have noticed that the sprite data gets corrupted at some points. I have no idea why and can only guess tha…
... the problem. Does the IY register need to hold a certain ...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 ...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 beast4-pixel scrollingDo you think is 4-pixel scrolling accetable for horizontal shooter ? (aka do u like Chronos ? :)
Do you think is 4-pixel scrolling accetable for horizontal shooter ? (aka do u like Chronos ? :)R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …
... the progress of the R register. At one point I reset ... contended RAM on the R-register? I do not run any ... no effect as the R-register is internal to the Z80 ... (Pentagon, Scorpion, ...) affect the R-register differently? Again I would guess ...Scrolling Loader CounterPlease can someone help me with writing a scrolling counter for a loading system. I like the Hewson counter so i`ve taken the font from zynaps loade…
... help me with writing a scrolling counter for a loading system ...which domain to register?I'm about to register a domain under my country's top domain. almost all of the keywords are available to buy and I'm a bit indecisive person. which…
I'm about to register a domain under my country' ...Well I'm excited, but I guess you might not beHehe this is as far as I got today, a silly little border program: [PHP] ORG 32768 PROGGY: LD C,255 ; We loo…
... /> DEC A ; Decrement register A
DJNZ BORDERDOWN ... /> INC A ; Increment register A
CP 16 ... try and get the scrolling bar effect ( way ...Reliable snow reports?Just booked a skiing holiday - anyone know of a *reliable* website that carries snow reports and details of piste conditions? Just did a load of web …
Just booked a skiing holiday - anyone know of a *reliable* website that carries snow reports and details of piste conditions? Just did a load of web searching and got so many varying answers that made any info worthless.IY RegisterIve got a really bizarre bug, and I have only just started using the IY register. I seem to remember reading somewhere in a programming book, to neve…
... just started using the IY register. I seem to remember reading ... , to never use the IY register. Am I dreaming this?
register (HL, DE, BC) for zero ...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…
Snow in YanksvilleOK it snowed here in Indiana last night, I say this for my neck of the woods though I have no idea if the entire state got snow. Anyway I have 2 nig…
... if the entire state got snow.
Anyway I have ... else in the states get snow?
Beanz, USSpeccyfan, Klepto ... in Canada and you get snow all year round every day ...Snow Joke z80 doesn't work?The z80 file for Snow Joke keeps giving an error message when you try to take the first object in the game: [url]http://www.worldofspectrum.org/info…
The z80 file for Snow Joke keeps giving an error message when you try to take the first object in the game:
[url]http://www.worldofspectrum.org/infoseekid.cgi?id=0006990[/url]
The tzx file works fine though.Top-down scrolling driving games...What would be the best top-down scrolling-screen driving game for the spectrum - excluding Trans-Am?
What would be the best top-down scrolling-screen driving game for the spectrum - excluding Trans-Am?
