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T-States?Can anyone point me to any good reading (or summarise) that will explain exactly what a tstate is? At the moment for me, tstates are a useful gauge …
... means 3.5 million t-states per second as t-state is measure ... i.e. if an instruction takes 11 t-states it takes 1/3 ... -
T-States?Can anyone point me to any good reading (or summarise) that will explain exactly what a tstate is? At the moment for me, tstates are a useful gauge …
... actions take a multiple of T-states to complete. The speed ... , is an instruction fetch operation that takes 4 T-states to complete ... sensibly as some number of T-states. The M-cycles themselves ... .
In conclusion, T-states are the correct measure for ... -
BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…
... , on a standard background; recovering T states (at reti) pretty much as ... able to move each tile an arbitrary number of pixels up ... /down and an arbitrary number of char columns ... -
T-States?Can anyone point me to any good reading (or summarise) that will explain exactly what a tstate is? At the moment for me, tstates are a useful gauge …
... take four clock ticks, or T-states, to do these three ... write from memory, take more T-states to execute than others. ... will give an indication of how many clock ticks, or T-states it ... guess the approximate number of t-states an instruction will take. Honest! ... -
T-States?Can anyone point me to any good reading (or summarise) that will explain exactly what a tstate is? At the moment for me, tstates are a useful gauge …
... guess the approximate number of t-states an instruction will take.[/QUOTE]
Zymosis -- WTFPL'ed Z80 Emulation Corebreaking news! i'm back with another useless project: new Z80 emulation core written in pure C! i hear you screaming: "oh, no! WHY?!" let me tell yo…
... Z80 emulator V3.3 and . These were taking N of T-States as ... retured N of actually executed T-States. Guess I should change my ...BIFROST* ENGINE 1.2 released!Another improved version of the BIFROST* ENGINE is now available! Download it here: [url]http://www.worldofspectrum.org/infoseekid.cgi?id=0027405[/u…
... each line in 207 T-states, thus 17 T-states too fast. Unfortunately ... to make it 17 T-states longer within the same ... bytes) to waste another 17 T-states. Consequently all attribute addresses ... source code also and thus generate a separate version specifically ...Light Gun on LED TV?Hi all! I noticed I can't make a Sinclair Light Gun to work in my LED TV set. Is it possible to make it work in some way? I guess the way the LED TV'…
... Correct about the need for an electron beam - but I ... wasn't aware about the use ... Your correct though, they aren't just infrared ones...
< ... br /> I can't remember how the Speccy gets ... its something to do with T states... Feel free to correct ...assembly optimization: times tenDecimal numbers are not computer friendly :) Anyway, short of saying "sod it - I'll multiply by 8" - and another part of the program does indeed div…
With an 8 bit input you could ... a look up table (29 t-states) - but wasting 512 bytes to ... save a 23 t-states...
[code]
LD ...assembly optimization: times tenDecimal numbers are not computer friendly :) Anyway, short of saying "sod it - I'll multiply by 8" - and another part of the program does indeed div…
[QUOTE=Stefan;643643]With an 8 bit input you could ... a look up table (29 t-states) - but wasting 512 bytes to ... save a 23 t-states...
[code]
LD ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... 8759 T-states after the interrupt, and repeats every 228 T-states.[/LIST]< ... TK90X is always [I]5602 T-states[/I]. Moreover, these results ... Spectrum 128K but 5602 T-states earlier and, as reported ... the Spectrum 128K but 5603 T-states earlier. This seems quite ...Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... /+2, except everything happens 5602 T-states earlier.
[/LIST]
The ... test checks the timings of an update to the main screen ...Work out attribute location in MCHow do I go about writing a MC routine which calculates the attribute address from a set of PRINT co-ordinates. I know you in basic you multiply the…
... ]How do I go about writing a MC routine which calculates ... t-states, 8-bit shift may cost only 4 t-states if you don't ... add. You just OR (4 t-states) bits from 2-7 of ...z80 Code Profiling (RESOLVED)Hi All, Just a quick question to ask if there is any way of profiling z80 Code for the Speccy??? I'm trying to write a piece of software and I curr…
... layout, but this won't be saved when you exit ... are many errors in the T-states data, because this is ... be temporary, but didn't get updated. Most of ... have the 2 possible T-state values swapped etc.< ... in ZXSpin anyway? There's an option "Tools : Code Profiler" ...z80 Code Profiling (RESOLVED)Hi All, Just a quick question to ask if there is any way of profiling z80 Code for the Speccy??? I'm trying to write a piece of software and I curr…
... that i need to count t-states in the block of the ... added some 'traps' to my emulator.
0xed, 0xfe, 0x18 ... it's just a 8-t nop followed by jr over ... emu this 'traps' takes no t-states, so it's cool. %-) and ...PRINT a numerical value i.e. the scoreHow do you fo about printing a numerical value using the print routine in the ROM? For instance I have a value 0-255 and want to PRINT the result at…
... . Most of my games use an increase of 1 so that ... 100 [but i didn't compared T states for this two routines ;]]).
Random number from a rangeHow can I generate in assembly a random number from a range, let's say 0-21 or 0-57? There are generators which make it 0-255. By using bit masks I…
... ;) )[/QUOTE]
Common, how many T-states 8-bit multiplication takes ? About ... . Unless you are going to generate tens of random values you ...Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
...
ld l,a ; w = t
ld (rnd+4),hl ... 1 byte shorter and 4 T-states faster than the version posted ... since games usually need to generate random numbers frequently...BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…
... think Bifrost gives you 20k T-states between interrupts?[/QUOTE]
Correct ... hero animation takes about 10K T-states of a frame, and afterwards ... programmer. I will post later an updated version of this demo ...Name the PSX game, and tell me how to play it? please?!It?s a Japanese game and therefore the title is just a load of squiggles, but I like to refer to it as, ?[B]Paedophilic Cat[/B].? The cover shows a …
... . Now then, this piccy isn't the same as the one ... somewhere and I copied an iso for emulator, but no luck. The ...BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... player or, if we don't mind about loosing the "underwater ... I will leave them as an exercise to the reader! :)
T-states per frame.BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... about half of the 20K T-states available per frame, so there ... this engine, it is truly an amazement to see!
SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... signal, if the Spectra expects an inverted luminance signal to get ... interrupt signal to begin the T-state count each frame. I ... can reliably used to count T-states pre-contention, and therefore know ... in there.
2. Have an alternative sync mechanism. For 128K ...SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... signal, if the Spectra expects an inverted luminance signal to get ... interrupt signal to begin the T-state count each frame. I ... can reliably used to count T-states pre-contention, and therefore know ... in there.
2. Have an alternative sync mechanism. For 128K ...New Game! Maritrini, Freelance Monster Slayer in... (etcetera)We have just completed and released a new game! A prequel for Maritrini Freelance Monster Slayer: [B]Maritrini, Freelance Monster Slayer en ?Las inc…
... memory stick (Still haven't got myself a USB ... cfg file or whatever...didn't work, tried deleting SPIN ... 't work. Tried an older version of SPIN....same error every ... time?
I don't really want ... happened? But I don't seem to be able ...Gameboy advance Speccy emulation?I have heard , but can not find clear / understandable info on emulating the spectrum on a Gameboy Advance... but it is apparently possible? Using '…
... ZXDS, can't see how a GBA Speccy emulator would be enjoyable ... ]
DOH!!
What an idiot!
Of course ...decoding loading barsI was idly pondering if it would be possible to decode the tape loading bars - just the header, say, for a standard loader, to determine the title o…
... interference pattern in the border an accurate enough representation of the ... to 4 scanlines high, 855 T-States), or a one (closer to ... the frame when viewed on an actual TV set, and a ...Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …
...
Unfortunately the schematics don't seem terribly easy to decipher ... chips, so I don't know still how it was ... for instance is 1.5 T-states of time with the memory ... the Z80's read in an octal flip flop then ... I'll probably instead use an FPGA to make a ...Pentagon RAM memoryDoes anybody know or have reference to technical docs, how no contention on RAM access is achieved in Pentagon 128K clone ? Looking at schematics it …
... Z80 processes an instruction that uses a lot of T states.
For ...Everdrive 64 (N64 backup device)Since I can't get N64 emulation to work right (unlike every other machine I try to emulate, why is N64 emulation still so riddled with incompatibilit…
... fact that no one emulator runs the majority of ... you configure the same emulator and the same plugins ... that still doesn't explain how an N64 emulator (UltraHLE) was ... need a cic chip from an original game? hows that ... it (other than insert an SD Card with the ...
