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JSpeccy: New emulatorHi there, Jos? Luis S?nchez (zx81 at ono dot com) has developed a new ZX Spectrum emulator in Java, with a very accurate Z80 emulation. The message …
... execution timings
- MEMPTR internal register emulation
- Contended-memory emulation ... -
Need help with small asm piece of codeI could use some help. I have a number in A register. It can be 1,2,4 or 8 (always only one bit is set) I need to make number transformation: 1 ->…
... have a number in A register. It can be 1,2 ... -
New game out now: Final Fantasy ZXEver since I played the games on the SNES, I thought that it should be possible to make a strapped-down version for the Speccy. Just minus any super …
... super fancy effects and smooth scrolling. I also played the NES ... -
New Game and HelloHi All, Long, long time lurker and contributor (hardware index, PiMan files etc..) but having been quiet for a few years I thought I might register. …
... years I thought I might register.
Not only that ... -
Hi, Spectrum, games and accessories on ebayHi ive been reading with interest the forums and thought i would register and show you my items. If anyone is interested let me know, or if your int…
... forums and thought i would register and show you my items ... -
Dragon Spirit reviewMy latest review at Spectrum Paradise: [url]http://spectrumparadise.blogspot.com/2010/04/dragon-spirit.html[/url] It's a vertical scrolling shoot'e…
My latest review at Spectrum Paradise:
[url]http://spectrumparadise.blogspot.com/2010/04/dragon-spirit.html[/url]
It's a vertical scrolling shoot'em up arcade conversion.
I hope you like it! -
Correct flag response to BIT n,(HL) etc.When running the test program suggested by Arjun (thanks again), all intructions are passing the flag tests except the BIT n,(HL), BIT n,(IX+dis) and…
... , have you implemented the internal register mentioned in Sean Young's ... -
Games that made your jaw dropThere were some games that really 'wowed' you the first time you ever played them - those games that made your jaw drop in disbelief. It might have b…
... - and the multi-layered parallax scrolling with the moon 'shimmer' on ...
Cobra - that parallax scrolling (so fast and smooth) had ... -
games you wish were a bit easier (or harder?)easier: Rockstar Ate My Hamster -- it just seems impossible to light up all 4 discs in the space of a year. 2 years would seem like more of a challen…
... somethng happened and I couldnt register properly)
add on ... -
Noise channels on AY-3-8912?I'm trying to reproduce a tune that's a jazzed-up version of classical music - i.e. there are drum beats all over the place, to try and mask the low …
... noise frequency than a drum. Register 6 controls the duration of ... -
Please help me name these two games...Game 1: It was a sideways scrolling game where you controlled a tank and a helicopter. The tank killed stuff and the helicopter carried ammo and fuel…
... :
It was a sideways scrolling game where you controlled a ... -
Emulator to create log files?Could someone please recommend a Spectrum 128K emulator that can dump the following data to an external text file, while emulating at normal speed? …
... . The contents of the IX register, at the entry point of ... -
How works the Line-Draw ROM routine ?The 'complete spectrum rom dissasembly.pdf' show info related to the draw rom subroutine. The Line-Draw require two sets of parameters: X,Y coordinat…
... ,Y coordinates passed by the register BC and the signs passed ... -
How to make a comp video cable for +2 greySorry to bog, maybe the clue is just laiden on another thread but.... I have just obtained a 128 +2 grey, fully working BUT the aerial signal is bad…
... bad (quite feeble and with "snow"), so I
begin to ... -
A tidy loader for minigamesThe minigame competition doesn't permit the use of separate loaders like [code]10 LOAD "": RAND USR 32768[/code] The loader must be included in the b…
The minigame competition doesn't permit the use of separate loaders like
[code]10 LOAD "": RAND USR 32768[/code]
The loader must be included in the byte count.
In an attempt to save as many bytes as possible, people have written ... -
+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…
... ]The ULA bug which causes snow when I is set to ... -
Google gone fancy.Has anyone else noticed that the background to Google's home page now contains a fancy if a little gawdy background? What's all that about then? Is …
... effort to get you to register with Google as doing so ... -
A question about M1 cyclesI'm writing an interrupt routine that, after the usual register pushes, will jump to a location of my choice with a [b]JP (IY)[/b] instruction. If I…
... routine that, after the usual register pushes, will jump to a ... -
Escape from Kharkhan 'new' gameHi all. For all fans of good games I present the English version of "Escape to Kharkhan". The Russian version was available for quite some time, but…
... the game displays the annoying "snow effect" ...
Have fun ... -
Colour or Monochrome?The release of the game [B]Cheril Perils [/B]at: [URL]http://www.worldofspectrum.org/forums/showthread.php?t=30403[/URL] made me voice my preferenc…
... suffers from it especially during scrolling, and even games like Starglider ... -
ZXDS interlace issues (DS Hardware issues, nothing wrong with emulator)I love ZXDS and its an amazing emulator but just wanted to ask if anyone else has noticed problems with the newer revisions of DS hardware itself whe…
... DS hardware itself when using scrolling type games.
I ... blurryness was especially apparent in scrolling games.
Has anyone ... -
Assembler Shortcuts Reference?Can someone please refer me to a page of assembler shortcuts; ie. concise ways of doing things in a few bytes which might not be immediately obvious?…
... A to reset the A register and AND A to reset ... -
newbie: on/off and video outputHello, having a lot of 8bit computer I tried the scart cables I have one gave me a scrolling image the other one gave me a good picture but no sound …
...
one gave me a scrolling image
the other one ... -
Gaming annoyancesWhat are everyone's gaming annoyances? Mine are respawning enemies, time limits and games that change styles on each level. I hate buying a side scro…
What are everyone's gaming annoyances? Mine are respawning enemies, time limits and games that change styles on each level. I hate buying a side scrolling shooter only for it to turn into an Op Wolf clone on level 2 and a puzzle game on level 3. -
Poking Super Hang OnYou guys are really good at poking. What I'd like to know is this- is there a guide online that helps explain the basics of poking games to the phili…
... around with the infinite time register didn't do much, so ... -
Z80 RRCA instruction...Hi Folks, Well my exploration of Z80 MCODE continues apace! I am struggling to understand how the RRCA instruction works. The official Zilog manua…
... ]The contents of the Accumulator (register A) are rotated right 1 ... -
SZX Beta 128 (aka TRDOS) block questionHello, I have a question or two regarding the Beta 128 (aka TRDOS) block of SZX. Hopefully someone (Jon, Philip) will help me. What is supposed to …
... value written to the system register?
I would ... the content of the status register on restore.
... value written to the system register), but the registers are ... of the status register to the command register on restore, which ... -
Just for funJust for fun, imagine the Spectrum had a graphics mode where there were two attribute bytes per 8x8 block and each block had 2 bits per pixel choosin…
... perform full or semi screen scrolling (twice as much data to ... -
Things I'd ask Chris Smith if he would give an interview about his book and researchGiven your current knowledge about the ULA interns, knowing what technology was capable to do those days, and knowing what people then and now would …
... , or advanced features like hardware scrolling, or sprites, fit into a ...