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To bobs, andrew rollings, psj etchi folks, yes I'm a bit hyper today, don't know why. I apologise to you bobs for getting your thread closed, I'll try not to do that again. :-o sor…
... all, if there truly is an omnipitent, all caring God, ... Why is it that every religion's leaders are richer ... , who took us into an illegal war in Iraq, ... fact, I don't think that an all powerful, all good ... unambiguous. Anyone who doesn't follow Christ ([B]anyone ... -
What Z80 development tools do you use? What books?Hi. I've been meaning to do it for over 25 years, but.. better late than never :) I'm starting to learn machine code and am trying to get a developme…
... 2 bytes and requires 7 T-states. AND A requires 1 ... byte and takes 4 T-states. What AND A does ... find if the result of an AND operation is zero, the ... and 4 T-states, instead of 2 bytes and 7 T-states for LD ... that you (eventually) won't be able to live without ... -
ZX81 more powerful than the Speccy?I have been reading ?The ZX Spectrum Book 1982 - 199x? by Andrew Rollings (thanks again, Andrew - it?s a great read!). There are some comments in the…
... , but with Bobs working on an 81 Dominetris, and probably more ... ZX81 though. It certainly isn't more powerful than the Spectrum ... amounts to about 20,000 t-states, whereas the Spectrum gives you ... -
Bit functions speedI just stared nonplussed at the documentation for the bit functions. Apparently, if you're using the accumulator, using AND and OR is faster than se…
... imm, OR imm take 7 T states, if this documentation is right ... indicate the next instruction was an extended one. So most of ... /> The one tip I didn't figure out for myself (and ... -
Gaming Epiphany?!?!?Not sure if this has been asked before, but, here goes. I was wondering which games people had played on what ever system and thought 'WOW now that?…
... .
Elite (BBC) - an absolutely stunning programming achievement with ... bit games. Virtually every RPG since owes an enormous debt of ... it eventually. It's an almost perfect game that rubbishes ... who say the Wii can't do beautiful graphics.
... -
OptimisationI've participated in several thread hijacks about this, so perhaps I should open a new thread. Et VIOLA! Here it is! Knuth, who was earlier reporte…
... and 3 T-states even where they don't actually ... or 40 T-states saved per iteration aren't really worth ... execution speed (which wasn't important) to optimizing ... maintainability. (The size didn't change much).
an environment where if ... -
shifting spriteshi. have anyone experience with shifting sprites by table ? some neat tricks ? i don't want to see complete code (really don't want, it trashes thr…
... one side opf screen to t'other.
2) ... , i.e. you can't use 1 template for each ... probably best if you don't have any animation ;)
< ... of the sprite, or use an extra register and store both ... d have to count T states, which I ain't gonna do, sorry ... -
Why is it possible to have a static IPbecause my router will give me an IP every time I connect by means of DHCP, I believe So what if I set me a static one and it's identical to one tha…
... address to a database every time you destroy an ethernet adapter (scrapping ... /> Although I suspect it wouldn't be quite that simple! -
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
MSX inserts 1 waitstate into every Z80's M1 cycle (instruction ... TMS9918 datasheet), which aren't much of an issue in practice.
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... ]MSX inserts 1 waitstate into every Z80's M1 cycle (instruction ... TMS9918 datasheet), which aren't much of an issue in practice.
Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... I didn't think MSX had added wait states outside of ... datasheet), which aren't much of an issue in practice.[/QUOTE ... I'd say they ARE an issue in practice. Some ... on emulators that don't emulate screen corruption, or ... their MSX2 (which don't need any delay) and ...Spectrum 2-3 times more powerfull than MSX?![url]http://www.youtube.com/watch?v=2-kI0urN9tI#t=8m18s[/url]
... video game Retaliot) even on an 8KB MSX1.
On ... has quite a lot less T-states per frame. That, along with ...Violence in Videogames....and Alan Bloody Titchmarsh..I don't know about violence in videogames, but [i]this[/i] makes me want to go on a murderous rampage....... [youtube]<object width="425" height="34…
... ]
hehe. I don't use that word a lot ... she wasn't interested.lol) .. every second word was an F or C ...Violence in Videogames....and Alan Bloody Titchmarsh..I don't know about violence in videogames, but [i]this[/i] makes me want to go on a murderous rampage....... [youtube]<object width="425" height="34…
... she wasn't interested.lol) .. every second word was an F or C ...Audio Output Filtering in EmulatorsI am messing around with various beeper-related code at the moment and have a question related to the audio output from emulators... I've written s…
... to 79/2 = 39.5 T states in time and this will ... the suggestion is to interpolate an intermediate output value that depends ... real spectrum as I don't hear complaints from the like ...PT3 playerHello, I need fast PT3 player. Can anyone advice if there is anything better than built in routine from VortexTracker? BTW, I am having issues with…
... t-states of one frame, but increace others.
In a concert every ...I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... the achievment of completing every chapter with an "S" ranking. I've ... 6-2. It won't give me an "S" on this because ... I haven't made enough kills ...I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... the achievment of completing every chapter with an "S" ranking. I' ... 6-2. It won't give me an "S" on this ... because I haven't made enough ... through it quicker (I don't think you get kills for ... end! But you definitely won't get an S that way :pWho would you like to see in 10 and 11 Downing Street...?Okay, so the general election has been called and we've had the final PMQs and things are really kicking off now. Counting in the possibility of a Co…
... minimum wage [B]didn't[/B] have an inflationary effect or increase ... no evidence for it having an effect that can be distinguished ... were low. Incidentally, the United States has had a minimum wage ...I am currently playing......Don't know if there's been a thread like this, but I can't find one.... Having seen all the different threads asking people if they've played such a…
... the achievment of completing every chapter with an "S" ranking. I ... 6-2. It won't give me an "S" on this ... because I haven't made enough ... , but everything else should be an S).
... I wasn't so I didn't bother sending you an invite. ...FMV on +3eOK, so about 6 months ago i posted here that i got full motion video on +3e, with a bunch of scr files called passion. I added the glider rider music…
... t-states on the IDE sector loader adding a sample out every 322 t-states ... is playing a sample only every 496 t-states, which equates to about ...Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky
... on unregulated DC supply doesn't seem to bother the video ... /> The voltage conversion circuitry does generate an AC voltage that is routed ...Flicker free ZX80 Pacman[IMG]http://www.fruitcake.plus.com/Sinclair/ZX80/FlickerFree/Images/Screenshots/Pacman_Title.gif[/IMG][IMG]http://www.fruitcake.plus.com/Sinclair/ZX8…
... ... That is one hell of an impressive piece of work, and ... the number of T-states executed always totals 5299 T-states.[/Quote]
Incredible ...New Game: Heart StealerMy first platformer is finally released! Having a Speccy since a long time ago, I've really wanted to make a game for it. Since february, I've final…
... to port the game to every other platform. (Note that ... this obviously doesn't apply to sound/music ... the skills involved aren't transferrable to modern environments ... tasks.
Counting T-states, producing uber-optimised, self-modifying ...Which games had the best music?Well? I always loved the music you heard upon dying in 'Zombie Zombie'. Also, are there any sites that have mp3s of Speccy music. I've seen the ones…
... somehow. You know how many T-states in whole frame, and can ... quarter of this time. However, every music player has non-constant ... can differ greatly (1000 T-states one update, 5000 T-states other). So you ... Beep;443013]Well, I wouldn't know - its demo song sounds ...Which games had the best music?Well? I always loved the music you heard upon dying in 'Zombie Zombie'. Also, are there any sites that have mp3s of Speccy music. I've seen the ones…
... somehow. You know how many T-states in whole frame, and can ... quarter of this time. However, every music player has non-constant ... can differ greatly (1000 T-states one update, 5000 T-states other). So you ... the case (i still haven't done anything useful with Z80 ...Games where you where a true masterI think the only game I could say I was a true "master" was super soccer for SNES, I finished it in the hardest level with Belgium, the worst team...…
... the dodgy controller that didn't move diagonally up-right.
t think I was master at ... I think eveyone that every played it got an accreddited megascore...but ...So you need to double (or triple, or quadruple) the clock speed...No particular reason for posting this, other than I was looking at an eZ80 evaluation board that does this, and that jogged my memory of a project I'…
... , but "normal people" can't be doing with soldering wires ... go the maximum number of T-states that contention lasts without getting ... as the propagation delay won't kill your application).
... CPLD like Xilinx XC9536 to generate the clock signal, it may ...Hi Res Print Routine neededHas anyone seen code for a print routine with pixel accuracy? That is print(y,x,CHAR) that allows 0 < y < 192 and 0 < x < 255 - that takes a charact…
... ....you still end up putting every graphic byte down twice and ... it, they each take 18 T states, and only operate on a ...Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…
There's an explanation of the algorithm on ... they have, and we don't.) :cry:
The basic ... , you'll consume 18 more T-states per iteration.
Now ... ]
Line 6 undoes an effect of [b]ldi[/b ...
