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How many T-states takes PUSH DE ?Hi. Just a quick one. According to z80.info docs, a PUSH DE should take 11 T-States to be executed. But WHAT if SP is pointing to Contended Memory,…
... PUSH DE should take 11 T-States to be executed.
T states looks OK, but shouldn't it take longer ... interrupts disabled but that shouldn't change the fact that the ... />
I think this 11 T states info is normal situation and ... -
Scrolling loader counter in 85 T-States?Would it be possible to write a scrolling loader counter in 85 T-States? I have a custom screen load routine that loads attribute first, then the …
... scrolling loader counter in 85 T-States?
I have a ... scrolling load counter in 85 t-states. Should be possible to update ... stack useage. My loader doesn't touch the stack, no calls ... -
Proxima user programs wantedCzech company Proxima software made/published a bunch of _very_ high quality user programs in 1990-1993 (in Czech), but they seem to be missing from …
... built-in monitor that can measure T-states. Can be loaded in any ... -
IDE emulation and delaysA few months ago I was told that IDE emulation, while perfectly usable, isn't accurate enough to compare it to IDE access on real hardware. On some e…
... worldofspectrum.org/forums/showthread.php?t=25880"]wavIDE[/URL], but ... course, this bug won't show up on Fuse, because it's ... ought to patch Fuse to introduce a few t-states of delay, so ... would be necessary to measure how many t-states lasts the BSY condition ... -
Incorrect Spectrum +3 emulation: different results on Fuse and SpecEmuWhen developing and testing [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027591"]Rotatrix[/URL], I noticed different results on Fuse and S…
... I noticed different results on Fuse and SpecEmu. Unfortunately I ... />
[*] Start either Fuse or SpecEmu, select "Spectrum +3 ... Fuse.
[/LIST]
Line 48 introduces a 2 T-states delay ... big, which means either Fuse or SpecEmu is not emulating ... -
Fuse - HelpAs some of you might have guessed already, I'm kind of doing a rampage on a lot of emulators, to test things out, and find the most suitable for deve…
... and debugging.
Fuse (win32 version) is not particularly ... file somewhere that I haven't seen yet, that has ... of info.
Register, T-States, Memory Map, ok...
t help much).
Another ... -
Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... contention they are trying to measure.
Philip is ... and the results demonstrated by Fuse are [B]bang on![/B ... level within particular instruction T-states that are not measurable ... starts 2 T-states [I]before[/I] the contended memory T-states. See ... -
Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…
... [*] Latest version of [URL="https://fuse-emulator.svn.sourceforge.net/svnroot ... /fuse-emulator/trunk/fusetest"]fusetest[/URL ... thus it will be 4 T-states further than marked in the ... you won't be able to accurately measure positions 4,5 ... -
How to install fuse in Ubuntu? Warning: Newbie trying to escape from MicrosoftThe title says everything. I have downloaded and decompressed fuse-0.8.0.tar.gz and I don't know what to do. Synaptic doesn't have fuse, and I haven'…
... . I have downloaded and decompressed fuse-0.8.0.tar.gz ... do. Synaptic doesn't have fuse, and I haven't found a .deb ... the console, but I haven't found anything this time.
Rendering techniques in emulatorsI've been giving thought to the possibility of speeding up the rendering in Zero considering I've been putting it off long enough. My approach is c…
... screen backbuffer every frame (69888 t-states that is). Swap backbuffer and ... sound buffer. Dunny?
* Fuse seems to use dirty rectangles ... Seems to work well for Fuse as the emulator runs with ... in pure assembly and doesn't use any multithreading or ...Machine code optimisationI'm geting back into z80 coding and wonder what the best way of showing how efficient the code is. I've got Rodney Zaks book and see there are timin…
... each instruction - ie M Cycles. T States and time @ 2 MHz.
Is there any way to measure these using any of the ...Ensure my interrupt handler begins at the same T-stateHi! Is there a way to ensure that an IM 2 interrupt handler starts always at the same T-state (related to the moment the ULA triggers the INT line, w…
... starts always at the same T-state (related to the moment ... to last a number of T-states which is a multiple of ... portion of instructions that aren't HALT last a number of ...How do emulators make code appears as running at 3.5Mhz?Decent Z80 emulators on github return t-states after executing an instruction, giving you the ability to emulate Speccy relatively well. But there ar…
... Z80 emulators on github return t-states after executing an instruction, giving ... are two issues I don't understand yet.
... has 4 t-states (and may have up to 23 t-states), isn't ULA ... to multitasking, but if you measure loop every second, you can ...TZX to TAPIs there an application for the mac which will convert TZX files to TAP? I've searched around but can't find any.
... by the CPC (fixed t-states between CPC changing the ... t matter much as from the computer side we can only measure ... reason those CSWs can't be converted, if ... br /> [/quote]
isn't the only reason we want ... /> [/quote]
isn't the direct recording block good ...On 48k, can I copy 4k before next screen updateFollowing on from my thread at [url="http://www.worldofspectrum.org/forums/viewtopic.php?topic=6423&forum=11"]http://www.worldofspectrum.org/forums/v…
... bytes gets copied in 51200 T states which is < the ... or ~61440 T but this is something you should measure in an ... Spectaculator reports the number of T states since the last interrupt -- ... interrupt. There are about 14000 T states spent by the ula drawing ...Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?
... TC2048. In any case the T-states for the TC2068, TC2048 and ... on the CVS version of Fuse :)
[quote]
Also ... what the effect on the T-states would be given that these ... /> It could be added to Fuse, but the timing numbers would ...Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... =Philip Kendall;177390]Can't this just be done ... /> [QUOTE=Philip Kendall;177390]Fuse has the ability to set ... I suppose breaking on zero t-states would do the trick. ... at getting the latest Fuse going in win2k, unless ... pasmo and then start FUSE from the command ...Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... the top of my head: T-States counting next to each opcode ... /> [QUOTE]watchpoints[/QUOTE]
Fuse can set breakpoints on writes ...Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... - I suppose breaking on zero t-states would do the trick. I ... look at getting the latest Fuse going in win2k, unless there ... make a VMware image of Fuse available somewhere, but I'm ...Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…
... aware this wouldn't be a 100% accurate measure because of memory ... simple optimization tests. Adding up T-states with pen and paper can ...How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…
... and can be used to measure the passage of time in ... counting on reading it to measure time passed. If you can ... /> Is it known how many t-states in one second that is ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... suggests why the usual documented T-states (contention start at 14335) ... samples the IRQ 3 states later after ULA pulls ... ). And yet some others measure it who knows how ( ... contention starts 2 T-states before the contended memory T-states.[/QUOTE]
...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... read.... suspiciously 1 T-state out ;)
Fuse is the same ... waiting a precise number of T-states before changing the border colour ... ULA requires at least 2 T-states to read the display and ... So at least 3 contended T-states must pass before the first ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... T-state would you say it was usual for tests to measure ... out which of all four T states are contented and which ... The first one can't be certainly contended by IO ... br /> Now wait, wasn't the #7FFF supposed to be ... Isn't it more like that not all four states are ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... This doesn't tell us which T states were contended and ... nor how many contended T states there are. Then we ... first and last contended T states, by running the instruction ... the test is to measure the execution of an ... 'll be able to measure the number of contended ...Contention and floating bus timingHello, I was recently playing a bit with memory contention and floating bus stuff in ZXDS and there is one thing which puzzles me a bit. It is the d…
... QUOTE=csmith;213979]I don't know. I've always ... you'll be able to measure the number of contended ... , I talk about which T states of the IO/instruction are ... I think we don't need to discuss this anymore ... you said, luckily it doesn't matter).
Edit: ...Fuse PSP has been updated!The brilliant FUSE PSP has just been updated to Fuse 0.10.0.1 (FUSE PSP released on January the 1st, 2009), and is available at: [url]http://psp.ako…
... later, but I don't imagine a debugger is a ... program so you don't have to alter the ... what complicated program doesn't in it's first few ... fully definable controls and save states FUSE PSP does 99% of ... this, Uberjack, please don't abandon FUSE PSP, keep on adding ...The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…
... I've only tested under Fuse. Doesn't affect gameplay though.[/QUOTE ... Pentagon version takes exactly 224 T-states per line, without contention.
FUSE too, but it's going ...wavide: WAV player for DivIDEPrompted by an email from zxbruno yesterday, cobbled together much quicker than expected... [url]ftp://ftp.untergrund.net/users/gasman/zx/wavide/[/u…
... course, this bug won't show up on Fuse, because it's ... ought to patch Fuse to introduce a few t-states of delay, so ... 8-bit D/A wouldn't actually need a volume table ...The So What's This Buzzsaw All About Then? Thread.Erm. This: [URL="http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap"]http://www.joefish.co.uk/speccy/Joefish_Buzzsaw_Demo_1.tap[/URL] Keys…
... of the code with 219 T-States per line, somewhere betweeen the ... bit better. I'll download FUSE too and try it in ...
