-
Timing_Tests-48k_v1.0 results...Hello All, I ran these [URL="http://www.zxspectrum4.net/op_timing.php"]tests[/URL] on my emulator and some of the tests failed.. so I tried it on a …
... then perhaps have one additional test for IN/OUT added which ... useful if a test which is supposed to test contention requires getting floating ... tests don't depend on contention, too. Or that a documented ... its for a one off test swap the IN's around ... -
AVR ZX Spectrum V2_0Good time! Glad to present my new development - AVR ZX Spectrum V2_0. Sorry, have no english version of this video. [url]http://www.youtube.com/watch…
... want to check contention timings etc using the test [URL="http://www ... -
AVR ZX Spectrum V2_0Good time! Glad to present my new development - AVR ZX Spectrum V2_0. Sorry, have no english version of this video. [url]http://www.youtube.com/watch…
... want to check contention timings etc using the test [URL="http://www ... ]
It writes:
Test 0 [uncontended]
Early/Late ... -
So tell me (in English) about πBacteriaI read a tantalizing snippet on another thread about something called 'πBacteria'. It seems that this tiny piece of software is a bare-metal Spe…
... 48K emulator, not AY, not contention, not any kind of interface ... ". I plan to mount and test it with the emulator. Sorry ... -
Understanding contentionI'm trying to understand contention and its implications when some "weird" bus cycles (such as I/O cycles with I/O addresses in the contended memory …
... timming mode, executing the ULA TEST 3 by Jan Bobrowski, modified ... Smith to show I/O contention.
From ... -
Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... purpose of contention outside the $4000-$7FFF range (a test program using ... -
Please test your ZX128+2 (grey model)Please reset your ZX128+2 (grey) and write in 128 basic (or in USR0 mode): [B]PRINT IN 32765[/B] - if basic crash (black screen) then your ZX contai…
... .
Did anyone really test this? I’m seeing comments ... 0x7ffd reads also changes the contention model to that of the ... -
PUSH scrollers 3[url=https://drive.google.com/file/d/0B-KEeni1WXmoYk9Dek1zVnd6Rk0/view?usp=sharing]CATS - Faith edition (example)[/url] Hello and welcome to the w…
... ]wait_VPOSR move.l $dff004,d0 ; Test the video beam for vertical ... -
No contended memory?Sorry if this is a stupid question. But I'm trying to learn more about the ZX Spectrum. If I had a stock 48k Speccy and I could wave a magic wa…
... Artic is also a good test case.
The Didaktik ... clock, and uses the same contention scheme as the Amstrad CPC ... -
Vega ARM SOC?I read that the core of the new Vega was an ARM SOC. I thought it would have been an FPGA. But it seems it's an ARM running an emulator. Anyone kn…
... />
A quick and dirty test of such a program with ... ,(16384) ;an operation that generates contention
ld a,81h ... -
Jet Set Willy: The Nightmare EditionExperience the timeless classic with a refreshing wave of new challenges and surprises! Solve the mysteries and find all the items... and be quick! …
I would test on a few more emulators ( ... at best a very basic contention model. Getting emulation accurate requires ... -
Retroleum Nebula - A Spectrum ULA replacement moduleHey you guys.. Just wanted to mention a new Spectrum doobrie created by myself (Phil Ruston) and Alessandro Dorigatti: Namely, the Nebula - A Spec…
... have accurate timing? Did you test it with multicolor games and ... /> - Ulatest3
- FloatSpy
- IR Contention (snow effect in place as ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... working back-to-back under contention, they're taking 16 ... you anything more. The contention pattern works in 8s.
contention makes them 8 cycles longer ... Is this deliberate, to test things under contention? As obviously the biggest ... -
Let's copy buffers!Figured I'd do some double buffered graphics, so I can render for several frames before displaying stuff. Yes, I mean on a 48k speccy, so no 128k spe…
... . Is this deliberate, to test things under contention? As obviously the biggest ... -
128K memory bank selection to avoid contention issuesI'm currently developing a game and I'm trying to get my head around the memory contention issues of the various 128K/+2/+2A/+3 spectrum models in or…
... ROMs are fitted. You should test the features of hardware you ... 's interrupt service routine to test the contention, a more complete version ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... state 14365 and the contention scheme is different from ... the test results. Here, I'm only using the contention to ... Spectrum machines. The actual test, like the port reading ... shouldn't be affected by contention (and there's no ... I/O contention on the +2A/+3 ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
Looking at your test, it seems like you might ... stable results
Memory contention has literally nothing to do ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... ="Hikaru;921353"]Looking at your test, it seems like you might ... />
[quote="Hikaru;921353"]Memory contention has literally nothing to do ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... ;921357"][quote="Hikaru;921353"]Memory contention has literally nothing to do ... something wrong with running my test on it with the tape ... /> [/quote]Hm, I ran your test with the tape acceleration enabeld ... in Woody's 'blue border' test, it begins by returning 15 ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... is possible without I/O contention. I remember doing A LOT ... port
cp d ;[4]test for ATTR color
jp ... port
cp d ;[4]test for ATTR color
jp ... ), but it doesn’t. No contention, mind. I’ll be damned ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... long run without I/O contention.[/quote]
Right. Using the ... from writing a meticulously calculated test program (or, indeed, and emulator ... perfectly. Of course, port contention (and memory contention if such instructions are ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... the +2A/+3 apply port contention in a way that is ... piece of code that will test port contention? Something that would make ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... timing, but the test tells us nothing about contention, unfortunately. We could ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... perhaps mean that I/O contention does not delay the program ... ?
Note that your test program can't be used ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... perhaps mean that I/O contention does not delay the program ... an intricate pattern of port contention, which I can’t reproduce ... least not with this simple test).
[quote="utz;943934 ... "]Note that your test program can't be used ... -
Making sound using the BEEPER in AssemblyI had a look at the the documentation but it doesn't make sense to me. To make music just the beeper all I have to do is send ones and zeros to one o…
... is certainly a much better test! Here’s the long, short ... ]
Whether there’s contention in both cases or not ... -
Can someone run this test program on a real Spectrum 48K?I've knocked up a small test program just to satisfy my emulation OCD if someone with a real 48K Spectrum can spare a couple of minutes to run it.? …
... ]
The difference is contention and timing, etc, are behaviours ... -- you end up with tables, contention patterns, counting T states, etc ... the thread for azesmbog's test program. The ula tests except ... -
Need help from people with a +2A/+3Started a topic [url="https://www.worldofspectrum.org/forums/discussion/55141/need-help-from-people-with-a-2a-3"]here[/url] to get a broader reach, b…
... the screen sampled after the contention starts. Before we had just ... conclusion thanks to the ptime test, so we could emulate it ... /> (BTW, your info about ULA contention on your page about floating ... of the original floating bus test program which was used to ... -
Can someone run this test program on a real Spectrum 48K?I've knocked up a small test program just to satisfy my emulation OCD if someone with a real 48K Spectrum can spare a couple of minutes to run it.? …
... : "2019-11-12-FPGA48all-tap-Test-on-Spec-Next-Machine-Selection ... ? I thought we got the contention and timings of all machines ...
