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Renegade (the hit squad)Hi fellow spectrum peeps,nice to meet you all!,and what a great site you have here!. I have been given a spectrum +2 which didn't load tapes,until i…
... into 48 BASIC, maintaining any program in RAM. There is no ... ]
From a quick test, this appears to be true ... +3/+2A, but NOT the 128 or +2:
[code ... ]
- returns 123 on the 128/+2, indicating that the second ... -
128K Contention - How to get it right?With my recent hardware hackery, I've built a 128K (toastrack) clone. I can't quite get the contention right though. What I'm lack is a clear descri…
... in the 128K ULA.
The 0xbffd test is testing that ... should be contended on a 128.... or is that the "bug ... pages are contended on the 128, whatever the manual might say ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... upper half of address bus. Test suite also treats port addresses ... even port address identifies the ULA (due to partial decoding again ... page:
"This ULA port is activated when the ... software other than ROM monitor program to obey this rule. Does ... -
Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... /> I've performed a load test with some tapes I have ... perform a test which showed that a normal speed program can be ... have to deal with the ULA timming restrictions. As you will ... -
writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…
... it disappears and a monitor program gets loaded, for Manic Miner ... works well in the monitor program (I can type in commands ... wrote some additional code to test it and everything looks fine ... -
Greetings all overheat problemsfirstly hello everybody and thanks for adding me to the forum dont know if ill be much use here but i hope so the problem i have or should i say a…
... hot?
2. Check the ULA - is it getting hot?
128 +2, originally I suspect the ... , so I changed the CPU, ULA... and still I had no ... much so - she is my test bed for allthings 128k spectrumy =) -
MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…
... ! (certainly use an assembler to test your hand conversion when it ... - how do you know your program is incorrect, when equally your ... at Sinclair that designed the ULA were. I can't say ... -
MCODE problem...Hi Folks, Trying to write a simple machine code program to hatch the screen. So far I have the following but even this is not working - it does not…
... at Sinclair that designed the ULA were.[/QUOTE]
Couldn't ... ! (certainly use an assembler to test your hand conversion when it ... - how do you know your program is incorrect, when equally your ... -
Dead Spectrum SocietySo I'm getting back into real Sinclair computers rather than emulators. During the summer months I was lucky enough to buy a working ZX81 and was giv…
...
Well... if the temperature test doesn't work, and you ... your ROM, or the ULA itself, or it may be ... boot, but then hangs. ULA, Z80 and ROM seemed to ... the attribute value the ULA is reading is not ... I wrote a quick BASIC program to POKE all screen (including ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... /> [url]http://jbacteria.antoniovillena.es/128?hwscdemo.tap[/url]
ULA safe. So any old program crashes and you ... /> 3. The changes in the ULA tend to be minimal, probably ... less FPGA space than in ULA+.
Of course ... -
Add horizontal hardware scroll to ULA+In this case we must read a bit in the ULA+ for test if supported. And the future software that uses it must have to branch: 1. If hardware scroll i…
... /> [url]http://jbacteria.antoniovillena.es/128?hwscdemo.tap[/url]
ULA safe. So any old program crashes and you ... /> 3. The changes in the ULA tend to be minimal, probably ... less FPGA space than in ULA+.
Of course ... -
Gauging interest: ZX EvolutionHi everyone. First of all I would like to introduce myself, since this is my first post. My name is Conrad, I'm from Vancouver, BC, Canada, and I hav…
... designed for the original Pentagon 128 or the vanilla ZX Spectrum ... 48/128 and have encountered no problems ... of a particular program you want me to test, as well as ... file you wish me to test. I will run it and ... -
Distinguishing between models?I'm running the risk of being pointed to the faq here, so sorry in advance. Something I'm trying out requires that the program can distinguish betwe…
... trying out requires that the program can distinguish between which one ... 48,48+
>128,+2
>+2A ... ,+3
48 from 128 seems easy enough, just see ... ZX48. Then better is hardware test = test adress space contention (slow ports ... -
Distinguishing between models?I'm running the risk of being pointed to the faq here, so sorry in advance. Something I'm trying out requires that the program can distinguish betwe…
... trying out requires that the program can distinguish between which one ... ;48,48+
>128,+2
>+2A ... solution is almost always to test for features (eg "presence of ... -
Repairing a faulty 48K issue 2.I am investigating one of a pair of non-working issue 2 48K Spectrums that have been sitting in a cupboard untouched for quite a few years. I haven…
... the lower RAM when the ULA isn't reading from ... . I ran a BASIC program that first filled an memory ... RAMTOP and running the test over the upper part ... to the area under test while the program was running, so ... . Perhaps whatever point the ULA is in in its read ... -
Create a new microdrive cartridge image formatHi there, I'm working to emulate the IF1+Microdrives in JSpeccy.I've found what the "classic" MDR format ins't capable to store all the required inf…
... for DATA FILLER. The Multiface 128 does something between IF1v1 and ... not transparent to the IF1 ULA, you need to remove the ... does not find errors post-test cartridge format. That don't ... -
Newbie QuestionsI have just purchased my first Speccy! It should be shipped to me (in the U.S.A.) very soon. I'm a ZX newbie & I have some questions :-D First of al…
... a "Toastrack" ZX Spectrum 128. Here are my newbies questions ... Speccy? Is there some "test" TAP image I should run ... there is a test screen on the 128 (or maybe that ... ;-)
The 128 manual is here [url]http ... this is the first program you have to run ... -
Newbie QuestionsI have just purchased my first Speccy! It should be shipped to me (in the U.S.A.) very soon. I'm a ZX newbie & I have some questions :-D First of al…
... think there is a test screen on the 128 (or maybe that ... C64 users ;-)
The 128 manual is here [url]http ... that this is the first program you have to run on ... usually come with ZX Spectrum 128 & a pair (?) of ZX ... -
Cheating games from FATWARE on DivIDEHere is patched versions of DivIDE system FATWARE 0.12(a)_POKE: [url]http://velesoft.speccy.cz/zx/divide/systems/fatware/fatware_012_(2012-01-02)_fo…
... test that's :running tap via Divide load on 128 ... />
Sorry, basic program is at end of tape ... you must load:
-BASIC program
-Bytes: inst
program and at end of ... SS"+"P" then keyboard test detect also next pressed ... -
Strange behaviour in real hardware but not in emulatorsWell, at least not in any emulator I've tried. I've been reported by fellow forum member Macc that both our Maritrini Monster Slayer and Retroworks'…
... crashes? and How could I test the code if I change ... no access to a real 128 and emulators don't seem ... interrupts are disabled.
ULA snow is (roughly) when the ... ULA fails to read from contended ... -
4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
... display corruption. With a 6C ULA temporarily installed in place of ... program that prints a screen full of coloured characters as a test ... too quickly and so the ULA captures invalid or incorrect ... Slight timing differences between the ULA types mean this doesn't ... -
ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…
... and 7 on the +2/128 ) ?crash!
The biggest ... had the means to actually test this, as I don't ... grey +2 nor a toastrack 128, and emulators worked flawlessly (even ... specemu/ZX Spin with ULA snow on). -
ULA snowHow is this feature implemented in emulators ? And how exact is the emulation ? I somehow supposed that ULA snow is something that is not very determ…
... had the means to actually test this, as I don't ... grey +2 nor a toastrack 128, and emulators worked flawlessly (even ... specemu/ZX Spin with ULA snow on).[/QUOTE]I agree ... -
BUG in zxspin and SpecEmu - read Loading speed in WAV fileI'm created a new save, but it can run at 44.1 KHz, to test it, i make a new file from WAV 44.1 KHz to 88.2 KHz. Load this file in a emulator zx-spin…
... scheme (the speed i need test)
[IMG]http://i40 ... )/2=13)
Test it, get the last line ... data to read this encode (128 or 256 bytes)
< ... speed.
I test this in excel, the min ... not add contention of ULA in this test, it's only make ... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... />
so who's arguing? ULA+ maybe a good solution, but ... the Spectrum 48 and Spectrum 128, to me they are not ... main picture. No more.
Program BorderTron 3000 tried, a simple ... -
BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…
... ;623260]so who's arguing? ULA+ maybe a good solution, but ... the Spectrum 48 and Spectrum 128, to me they are not ... main picture. No more.
Program BorderTron 3000 tried, a simple ... 're going to replace the ULA, which you will need to ... -
z88dk vs. sdccI've just read this article (in Spanish) [url]http://www.cpcmania.com/index2.asp?urldest=Docs/Programming/SDCC_vs_z88dk_Comparando_tama%F1o_y_velocid…
... library code.
The test cases are also misleading. z88dk ... C linkage which can expand program size several hundred bytes and ... count can raise up to 128, and sometimes you experience slowdowns ... -
Robocop 3 and Spectrum 128K toast-rackHi all, we are going on with the tests on the new 128K emulator for the V6Z80p board, and we have found something odd: Robocop 3 (designed for the 12…
... is doubtful is that this program works in a real 128k ... :
[quote]
The ULA bug which causes snow when ... /> Any 128k user capable to test Robocop III is here? :) -
ESXDOS v0.8.0 released (with NMI Browser)Hello, To celebrate the speccy's 30th birthday, here's the latest version of ESXDOS for DivIDE users. The full changelog is too long to post here, s…
... than I. I do test my software on real hardware ... on a SD-Card to test how it is running ... ? I only need to test it on Emulator because Fatware ... br /> Fatware is a nice program for quickly testing my software ... still far away from the 128 char limit. On Spectrum ...
