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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 ->…
[QUOTE=Ralf;432457]... I didn't take into consideration however that ... by a constant amount of T-states. Useful if the engine is ... -
Real Spectrum screen flicker with SCREEN$I've written a basic loader to simply do a 'load "" screen$' based video from a divide+ however I'm finding the Spectrum can't render a screens and a…
... raster and wait around 15000 T states for the raster to pass ... -
Be honest now...When you got your (first) Spectrum, was it the computer you wanted? And don't worry, this poll is anonymous, so your secret is safe, even if you're …
... keybord layout, only 32 characters per line...
To make a ... -
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 ... real spectrum as I don't hear complaints from the like ... -
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 ... -
Castlevania ZXDoes anybody know what happened to the Castlevania ZX project? Yet again another great game that missed the Spectrum but had a port on the C64 [url…
... news.
I don't think Radastan abandon the project ... medium time of 102.5 T-States.
The ZX-Castlevania i ... don't know the real state of ... the project, and i don't talk with he about the ... -
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…
you test wiz-player T-states?, i not count the T-States of any AY ... .
Allways bearing in mind T-States of cpu, size code, and ... -
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…
... second,and count down the t-states of one frame, but increace ... -
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…
... know - I measured all the t-states on the IDE sector loader ... a sample out every 322 t-states for 11025 mono and in ... a sample only every 496 t-states, which equates to about 7157Hz ... -
Mistake in the 128K technical FAQ?[url]http://www.worldofspectrum.org/faq/reference/128kreference.htm[/url] [quote]Memory banks 1,3,5 and 7 are contended.[/quote] Really? I thought i…
... (hl), a ; 7 T
inc bc ; 6 T
jr loop ... ; 12 T
; 25 T-states in total ... (24+32) = 56 T-states, as opposed to 50 T for non-contended ... -
CPU speed measure possible?Is it possible to measure the CPU speed and shows the result on a LED display? Micky
... ') one from ULA. We don't want to measure the accuracy ... idea. Then the 'number of T-states lost today' could be displayed... -
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…
... 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…
... make them employable. I don't think Speccy programming is in ... of the skills involved aren't transferrable to modern environments or ... programming tasks.
Counting T-states, producing uber-optimised, self-modifying ... -
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…
... Note that this obviously doesn't apply to sound/music ... [emphasis mine]. I don't think Speccy programming is in ... 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 ... 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 ... , by some reason they haven't used this feature in the ... -
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…
... even worse :) I still can't understand how they can write ... operations take a lot less t-states than on z80 (even non ... -
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 ... 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 ... -
iXpectrum, new Iphone ZX Spectrum Emulator.Hi, I have been working in a iPhone port from the gp2xpectrum in which i were working time ago with Metalbrain. I decided to port gp2xpectrum becau…
... ( another times i can?t see this line ) ,
I try ... to menu, the buttons doesn?t work
Block button ... -
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'…
... crystal, but "normal people" can't be doing with soldering wires ... stopped. Fortunately, this doesn't happen (and they'd have ... go the maximum number of T-states that contention lasts without getting ... as the propagation delay won't kill your application).
... -
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…
... it, they each take 18 T states, and only operate on a ... -
Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... (just a couple of extra T states inside a loop can be ... -
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…
... signal is asserted for 32 T-states.
A useful quirk ... ; 10 T Edit: 7 T
ei ; 4 T
nop ; 4 T
Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... variations in the number of T states executed between each of the ...Beepola v1.01A new version of Beepoa, v1.01, is now available for download from:- [URL]http://freestuff.grok.co.uk/beepola/Beepola_v1.01.00.zip[/URL] (650KiB) …
... variations in the number of T states executed between each of the ...Budget Game World Cup Group AHere it is group A
[QUOTE=mile;458704]ah cool.
remember no swearing this time. :-P[/QUOTE]
Sod off!
nah I can't pull that line off either :(Optimize this assembly?Aiming for Variable*192 -> HL In the first case, I came up with the obvious method - *128 +*64: [code] ld a, (variable) ;13 ld h,0 ; 7 ld l,…
... pair of register copies (21 t states, vs 8 )Optimize this assembly?Aiming for Variable*192 -> HL In the first case, I came up with the obvious method - *128 +*64: [code] ld a, (variable) ;13 ld h,0 ; 7 ld l,…
... , 0; also, RRA takes 4 t-states, rather than 8 for RR ...Optimize this assembly?Aiming for Variable*192 -> HL In the first case, I came up with the obvious method - *128 +*64: [code] ld a, (variable) ;13 ld h,0 ; 7 ld l,…
... correctly, one thing it doesn't show is an 8 bit ... .
Realistically, you can't do much more than 6 ... probably halve the number of T states on already, I'm sure ...Developing on Linux (Ubuntu 10.04)Ok, so I decided to install Ubuntu as my main OS, but keep XP as a bootable partition just in case I err mess up Ubuntu, :) I also have XP VM in Virt…
... play them need a few T-states, so you can consider it ...Where is Paul Dunn, creator of BASin ?Just wondering if he's still developing BASin ? I've just started using 14c and have a problem with the font size, specifically in the assembler ? M…
On a completely different note, has anyone got a handy doc that lists the Z80 instruction set and t-states ?
I'm new to all this, and trying to get my head around what registers are best for what jobs.
