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ZX Spectrum video waveformsAll work for this post was done on a ZX Spectrum issue 1 board (16k bytes of RAM only). This was what the Spectrum displayed on the TV screen: [i…
... 1, one video 'TV' line - Y video and composite video to modulator - ... 1, one video 'TV' line - Y video and composite video to modulator< ... , one video 'TV' line - inverted Y video and composite video to modulator ... the DC offset can be removed by using a coupling ... -
bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…
... . I installed a 128k-test-ROM that told me about RAM ... to work. The 128k test ROM did not find any error ... ; no effect
Finally I removed the 5V regulator cable from ... computer beside the (temporarily removed) RS232 and the video circuitry. However ONE ... -
ZX Spectrum border and sound problemAfter recap stange problem with ZX Spectrum (issue 3b) with sound and border. See video at: [url="https://drive.google.com/file/d/0BwhYHKW6xjI-aVdMcE…
... ) with sound and border. See video at: [url="https://drive.google ... same thing. Upper 32KB is removed, when install upper 32KB same ... . I was replaced ULA, CPU, ROM, RAM, (same thing with original ... -
ZX Spectrum border and sound problemAfter recap stange problem with ZX Spectrum (issue 3b) with sound and border. See video at: https://drive.google.com/file/d/0BwhYHKW6xjI-aVdMcEY4ajVk…
... ) with sound and border. See video at: https://drive.google.com ... same thing. Upper 32KB is removed, when install upper 32KB same ... . I was replaced ULA, CPU, ROM, RAM, (same thing with original ... -
New Spectrum ROM: Arcade Game DesignerIn the last few days I've completely rewritten the Spectrum ROM from scratch to include AGD. Some of the functionality from version 4.8 has been los…
... 've completely rewritten the Spectrum ROM from scratch to include AGD ... the editor routines in the ROM, AGD users have a bigger ... playground too.
The ROM comes with documentation. I've ... 128MBit PROM and post a video that would be fun :) -
5Ghz Video Transmitter - no more video cables.Just thought I'd mention... While waiting for my new LCD panels to arrive, I wanted to test the new Speccy that arrived, that wanting to test it, I r…
... KHz monitors, etc... So I removed one of the 5 GHz ... by themselves, and already have video receivers built in ) I figured ... -
zx spectrum display corruption .. with lower ram module installed[img]https://photos.app.goo.gl/Gu6rjC5v21sZxwTX9[/img] [img]https://photos.app.goo.gl/FznVw8SkbbhWn5mh7[/img] another specie question : i have …
... spectrum 48k issue 4A with video corruption, it has lower ... are responsible ? i have removed the rom, tried different ULA,recap, ... to pin 24 of the rom when checking i found ... making its way to the rom.(but was ok from ... the rom to the cpu etc. ... -
Multiface 3 hacked rom?Hi, I need to transfer some games on the +3 disk drive using my MF3. I know you need to have the MF3 pluged in in order to load the games afterwa…
... of "hacked" MF3 rom that has this lock removed and makes it ... -
Paging for 64Kb of Video Ram??? What is the best way to page this?Hi all, I'm just putting together a concept card for a "Loki" style of video card, which supports shadow ( so it fits a normal Speccy ) and also t…
... single 48K video page with RAM relocated to the ROM space? Use ... upper 16K for a "Normal" video screen and variables/basic area ... sections. This would allow the video card to have two separate ... shadowed, would allow for 2 video screens that could be viewed ... -
48k to 128k upgrade - problemsHi friends! I built 128k upgrade according to the [url]http://hw.speccy.cz/128krebuild.html[/url]. After I powered on my Speccy it said hello with s…
... build and becouse of second video RAM it still gives possibility ... -DC step down converter, heatsink removed (but added small one to ... RAM chips from one series, removed -5V circuit, replaced CPU (and ... it worth to replace 48k ROM to 128k one (and I ... -
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…
... (still with the lower RAM removed) doesn't have any effect ... the CPU and/or the ROM is dead.
So ... us a picture (or a video) of what you see?
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…
... when the z80 accesses the rom during a border update, so ... is refreshed just by ULA video read - well out of spec ... enough! Thus the resistor was removed.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…
... has to do with enabling ROM (/CE)[/QUOTE]
No ... the same time as I removed R57 I also modified the ... display line (say in the video circuitry when the switch from ...Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…
... second, it boots again with ROM 1.[/QUOTE]
... computer resets itself with shadow video page active.[/QUOTE]
... toastrack with the original spanish ROM (without the menu). It ... br />
Test messenger with removed eprom and sram from sockets ...zx spectrum 128+2a/b questionsIv just purchased a 128+2 and have only one game for it lol (Super stunt man). A few question if anyone can help.. 1)I'd like to run games through …
... may be minor differences (ROM versions and some modifications in ... but...
- Unmixing video and audio output. Audio output ... , and it may affect video signal (also when using ... options. Some people have removed completely the cassette and put ...SPECTRA New from Paul FarrowLooks good! Read about it [URL="http://www.fruitcake.plus.com/Sinclair/Spectrum/Spectra/SpectraInterface.htm"]here[/URL]
... from paging in an external ROM and therefore having to ... . So long as the ROM facilities of the SPECTRA interface ... Needle;673433]Unfortunately, with CPUCLK removed (and the SPECTRA plugged in ... because the interface monitors the video signals in order to ...another faulty zx spectrum +2 to fix!!!Hello to all, I'm new here... I have got a faulty +2 (gray) and start to try fix it... I have read the treads of xaris_sm and Pluto63 as background…
some little progress after rom ram test fitted in (with ... PSU...
I have removed TR9 and soldered the +5V ... the machine boot and video modulator work and video composite too..
Retro Gamer 119This issue is out later this week. Thought I'd mention it because in addition to my own 2-page making of Deactivators, which is an ace game and would…
... the beginning of the Spanish ROM (MB, KM, and AT ... the end of the English ROM (Martin Brennan, Steve Berry ... the 128 which were removed before production as they ... versions of the 128 Editor ROM. "I wrote the ... doesn't feature the Timex video modes (Timex had given ...JP (HL) confusionokay.... JP nn will jump to memory address nn. JP (HL) ,I assumed would read the contents of memory address HL and jump to the location and be a gre…
... However, that restriction could be removed if required, and the code ... and bottom margin and display video in conjunction with a ... while executing the video display - but this is internal ROM stuff. ;-) ... />
Yes, the ZX81 video routines do that, but this ...The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…
... attempted, however there was no video output and the CPU appeared ... removed, the CPU clock looked more sane, but still no video.
removed.
Shorts fixed, we ... 's RAM and with no ROM installed (the pattern is the ...The Spectrum Resuscitation ThreadKicking off this thread as a place where people who are fixing/restoring Spectrums (or indeed any other piece of related hardware) can show off their…
... on, got colour so the video section's now all good ... , solder in lower RAM and ROM sockets, and go for broke ... still not clean enough (I removed a lot of excess solder ...can a backup device damage the spectrum ROM?as above. been using a specmate device which seems to have corrupted my speccys ROM.
... and video's, but now one says its the ROM ( ... an interface / expansion is removed or fitted while a Spectrum ... any device (Z80, ULA, ROM, RAM) can potentially be ... keep in mind that ROM chips do sometimes fail ... far more common than ROM failure. Your machine may ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... Programming|Sinclair Research Ltd}.#The ROM image is available at ... Introduction|Sinclair Research Ltd}.#The ROM image is available at ... drive from the +3 was removed and replaced by the cassette ... Timex/Sinclair 2068 - NTSC (60Hz) video, with a ZX81-style edge ...Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…
... from the +3 was removed and replaced by the cassette ... market with PAL (50Hz) video, custom ULA supporting additional screen ... Research Ltd} with modified ROM (additional command for User ... (6 channels), 32Kb of ROM (with improved BASIC including software ...Disabling the ROM without removing the whole thingHi! I've got my hands on a non-working issue 6a. I suspect the ROM may be bad, but other things may be faulty as well. I've read that in an otherwis…
... the screen pattern seen when ROM is disabled came from a ... else.
- Disabling the ROM by connecting lower pin 3 ... was no change.
- Removed one of the upper RAM ... checks described in the JoulesperCoulomb video checked out, at least the ...128 +2 video connections.I have just got my hands on a Spectrum 128 +2 grey model all in working order, what I need to know is if I take a signal from the CVBS Composite Vid…
... from the
CVBS Composite Video ( PAL, 75 ohms, 1.2V ...Didaktik M (ZX Spectrum clone selling)Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tap…
Here is an offer to buy ZX Spectrum clone ( DIDAKTIK M ) from Slovakia, basic info: 100% functionality, Kempston & Sinclair joysticks connectors, tape device connector, TV and VIDEO out, 48kB RAM/ 16kB ROM. Price GBP 50.New WoS CD-ROM Project[url="http://neuro.zensoft.net/woscd/"]http://neuro.zensoft.net/woscd/[/url] I'm about to embark on an ambitious project ... to create new up-to-dat…
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- WoS Basic Archive CD-ROM (1 disc) - UKP 5 inc ... ;P
1x CD-ROM incl. Games, Emulators, Remakes & ... also considering a tech CD-ROM, excluding the games, but including ...Emulators and ROM'sHi - This is my first post here, although I have been visiting WoS for ages.... I have been on quite a few multi-platform sites that offer downloads …
... good collection of emulators and ROM's that they would be ...
