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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…
... and register I is set to fast memory = no snow. (ZX48 ula snow ... only if register I is set ... -
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…
... paging. If 48k game set register I to value #BF-#FF ... (set in OPTIONS menu "ula snow effect")
VELESOFT -
Blizzard's Rift in Spinanyone else having trouble playing blizzard's rift in spin, the game loads ok, you can select controls, select a system to visit but when you select …
... the I register in such a manner that would cause snow on ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... game, but the 'snow' effect (setting I register between $40 and $7F ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... game, but the 'snow' effect (setting I register between $40 and $7F ... I have never seen the snow effect occur ever. (I have ... -
ANN: SpecEmu 2.7Go get it kids! [url]http://homepage.ntlworld.com/mark.woodmass/specemu.html[/url] :p
... value of the PC register in the register window by just using ... the IM mode via the register window. (If I'm not ... fails!
7) The scroll buttons in the main memory ... -
ANN: SpecEmu 2.7Go get it kids! [url]http://homepage.ntlworld.com/mark.woodmass/specemu.html[/url] :p
... value of the PC register in the register window by just using ... the IM mode via the register window. (If I'm not ... />
[quote]
7) The scroll buttons in the main memory ... -
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…
... SP=lines and all the scroll will look like POP HL ... and do it with less register loads. The overhead for this ... -
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…
... order (effects like plasma, zoom, scroll), source address could be video ... opportunity to change only one register and the routine could be ... -
A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... work fast, you must not scroll whole screen, but coordinates of ... , from using ROM content or register R (don't forget it ... -
A scrolling starfield - help needed!I have been messing on my speccy again recently and tried to do a scrolling (parallax - maybe) starfield. I know how to scroll using machine code but…
... /> Use QAOP keys to change scroll direction of starfield.
register pair, it wasn't much ... -
4116 DRAM for 48KSomeone told me I got faulty RAM in my broken 48K. They should be 150ns, right? What would be a good place to buy them from?
... I connected an 8-bit register (74HCT574 or similar) to 'capture ... perfectly stable, but showed some 'snow' on screen. Somehow the Z80 ... of clocking the 8-bit register directly with a DRAM control ... / writes to the lower RAM. Snow gone, normal operation 100% stable ... -
Hidden Features In GamesI'm sure there was a thread like this somewhere - sorry, but I can't find it. Hidden stuff in games. In "Mikie" there is a hidden bonus in each of …
... to have written the Cobra scroll - Mr Owens the other dodgy ... emulator testing with the "R" register usage - if your emulator gets ... -
Hidden Features In GamesI'm sure there was a thread like this somewhere - sorry, but I can't find it. Hidden stuff in games. In "Mikie" there is a hidden bonus in each of …
... emulator testing with the "R" register usage - if your emulator gets ... for a cheap 4-pixel scroll - who knows? In fact, who ... -
Fastest Block Drawing Code?Following on from my scrolling thread [URL="http://www.worldofspectrum.org/forums/showthread.php?p=351304#post351304"](http://www.worldofspectrum.org…
... go in in order to scroll the screen.
Now ... it from stack, just fill register pair with null and use ... -
48K games that don't work on a +2Not sure if there is already a thread about this but recently I've noticed some old 48K games will not run on my +2 - even in 48K mode. Examples are…
... game, but the 'snow' effect (setting I register between $40 and $7F ... a 48K machine with the snow effect. But hey, I've ... -
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 (…
... the "snow" is white... I have only ever set I register in ... issue would surely make black snow...
Which leads me ... -
just thinking about ...compo for zx 16k ? anyone ?
... where to point the I register:
In RAM > ... lower RAM: gives you ULA snow.
In the empty space ... -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... the I register points to 64-127 then you get snow and ... -65535, so setting the I register to 192-255 can also ... problem (they have the I register set to 240). -
Games not compatible with real grey +2There are many threads about Spectrum+3/2A incompatibility issues but what about grey +2? I've found that games like Marauder and Skate Crazy don't w…
... the I register points to 64-127 then you get snow and ... -65535, so setting the I register to 192-255 can also ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... click, it's necessary to register the app. I still don ... .
For example, horizontal text scroll in Dan Dare (bottom on ... -
'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…
... /> ldx #$00 // reset counter (x register)
loop lda hello,x ... area.
inx // increment x register (used as a counter)
scroll. -
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…
... use of the stack pointer register and PUSH data onto the ... done a very smooth vertical scroll for the ZX Spectrum. Maybe ... -
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…
... screen will still need to scroll vertically. This requires a buffer ... (the single-byte ones, with register operands) take 4 T-states ... aren't affected by I-register contention, so it can use ... -
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…
... screen will still need to scroll vertically. This requires a buffer ... (the single-byte ones, with register operands) take 4 T-states ... aren't affected by I-register contention, so it can use ... -
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…
... think I used to think snow was a TV quirk but ... way that setting the I register to 40h-7Fh was not ... same value to the R register!
Yes! POTW ... -
Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…
... the I register to the RAM will cause the ULA snow effect ... -
designing a computerHi everyone! I am designing a 4 bit computer and i need some advice, is this a good instruction set? [CODE] BINARY OPCODE DESCRIPTION 00000 nop…
... , I didn't bother to scroll back to actually quote where ... rn (ie load or store register)
jump I made no ... -
The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …
... means that you select the register you wish to read/write ... round on itself... so to scroll the screen, you only need ... />
full_scroll
shadow_off
scroll 64,64
screen_on
Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…
...
This register adjusts the horizontal scroll position for playfield 0 ...
This register adjusts the horizontal scroll position for playfield 1 ...
This register adjusts the horizontal scroll position for playfield 2 ...
