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zx spectrum 48k low -5volt raili have just received a 48k issue 3. initial tests show that all voltages are there but the -5V rail is only showing -4V. it does boot but i have tur…
... any further possible damage to lower ram.i have not experienced ... the zener diode? maybe bad lower ram chip holding it down ? -
New Utility ZXSTLC[b]New Utility ZX Spectrum Tape (& Disk) Loader Creator[/b] I made this utility to easily create tape and +3 disk loaders for my projects and have…
... will be made uppercase if lower specified
+--------------------------------------------------------------------------------
[/code ... -
upper ram tacks / TR4 socket...[url="https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7"]https://photos.app.goo.gl/MkqzRCuNCV3EPr9E7[/url] you can only replace that pesky TR4 so many t…
... it would just fry the lower ram again .. this is one ... -
Games with proper "Micro Manuals"COMBINED CASSETTE INLAY AND "MICRO" SIZED INSTRUCTION MANUAL This is something I have not come across before . Two staples are used to hold it al…
... towards the top side . The lower second staple is used to ... -
zx spectrum 48k interference during first two minutes of warm upi have a issue 3B 48k that i am looking at during the first two minutes (approx.) of warm up there is interference on the screen (tried to take a pic…
... ?? i was thinking maybe a lower ram chip was on its ... -
Earliest game to use custom character set ?The [url="https://worldofspectrum.org/forums/discussion/58040/who-has-got-the-earliest-zx-spectrum-software/"][b]topic here[/b][/url] about early sof…
... -Z , either with or without lower case. Don't want to ... -
Songs of the Spectrum's Heydeys - 1983Ok, we did 1982 the year the Spectrum was released. But now on to 1983 which was the year Sinclair computers were selling in very big numbers. For me…
... largely in part to the lower cost of electronic instruments such ... -
ZX Spectrum Software Hire Clubs. Does anybody remember them? They used to be quite popular circa 1983 . I think some were just for the ZX Spectrum , Others covered a broader range of micros . I think they rel…
... some extent, on the much lower postal costs at the time ... -
Direct drive LCD screen - looking for information on previous projects people may have attempted.Hi All, My first post, so please forgive and guide if I've posted in the incorrect section. I'm a speccy user from way back in the 80's, but m…
... ) that maps over the Spectrum lower 16K, and captures writes to ... area ( or, potentially, replace the lower 16kb entirely, but that's ... -
If you had four roms...Just wondering if you were designing a Spectrum from scratch, and you used a 27512 EPROM, which would hold about 4 spectrum roms, what you would inst…
... accessed and mapped over the lower 16K ROM space as well ... -
Repairs and Reparing.Hi All, Just finished resurrecting an Issue 3A board. Had black lines, so replaced the lower 16K RAM chips, Amazed they just cost a couple of doll…
... black lines, so replaced the lower 16K RAM chips, Amazed they ... -
Textured Scanline Flood Fill for ZX Spectrum 48KPity that it's quite hard to contribute code to WoS in a straightforward manner. Recently, I have created a textured/hatched fill M/C routine for the…
... -256*INT(o/256): REM lower byte
350 POKE 63693 ... /> 380 POKE 63692,196: REM lower byte
390 POKE 63693 ... -
New Version of ZEsarUX v9.3 Beta 1 availableNew Version of ZEsarUX v9.3 Beta 1 available Downloads: [url="https://github.com/chernandezba/zesarux/releases/tag/9.3-25062021"]https://github.co…
... setting to disable boxes around lower and upper ZX Desktop Buttons ... -
boot fail .. bad address lines A7,A12,A13anybody have any ideas what could be wrong with this specie issue 3B .. work done : removed rom, upper ram & logic put lower ram multiplexers in sock…
... , upper ram & logic put lower ram multiplexers in sockets (ic3 ... & ic4) , put lower ram in sockets, full recap ... 's & ULA's. fitted lower ram module ... still no boot ... -
Killed Until Dead - Spectrum 128K versionI first got hold of this game about the same time as the film "Clue" started being shown on TV, and there was a "Miss Marple" series on TV, followed …
... enough), copy some routines from lower in memory to this area ... -
Missed opportunities in the 80'sAll the talk of the Loki got me thinking... What if someone had built an expansion box for the speccy that had the 3812 Yamaha music chip ( Adlib Sou…
... the era, but at a lower cost than buying a new ... -
ZEsarUX 10.0ZEsarUX 10.0 is out! Download it from : https://github.com/chernandezba/zesarux/releases/tag/10.0 Changes: Version 10.0 - Clive Sinclair edi…
... setting to disable boxes around lower and upper ZX Desktop Buttons ... -
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…
... or 512x192 ) to occupy the lower 48K of memory and leave ... -
Spectrum Abuse...Just got some new Spectrums in to repair ( I find it a great way to relieve stress, excepting when I do something daft while fixing them... ) One …
... that it had a faulty lower-16 ram chip... Replaced and ... -
8-bit webcam & Speccy imagesI want to present you my small pet-project, made for the soul and for practicing some modern web technologies. The project is called "8-bit Camera…
... tablets (the square in the lower right corner of the video ... video sound (circle in the lower left corner of the video ... -
Building a ZX Spectrum and I have some voltage questionsI've posted about this before looking for parts, but now I've found all the hard-to-get stuff (thank you Retrolium!). So I figured new questions, new…
... RF Modulator)
+5V to Lower RAM: +4.98V
+12V ... to Lower RAM: +12.56V
-5V ... to Lower RAM: -4.31V
+5V ... something to do with the lower voltages I'm seeing? -
Built a ZX Spectrum that works, but can't get the upper RAM to work?Like the title says I finished my Spectrum 3B board, and it boots, but it doesn't see the upper 32k of RAM. When it boots, the lower 16k works f…
... />
When it boots, the lower 16k works fine. I have ... diagnostic. Basically, tells me that lower RAM is good, all upper ... -
The sound quality (or not) of AM radioInspired by [url=https://worldofspectrum.org/forums/discussion/comment/995799/#Comment_995799]this comment about the BBC's methods of beating pirate …
... all at much the same lower frequencies as what LW radio ... -
Quazatron - StrategiesI have been playing this again and thought it might be interesting to discuss strategies for clearing the levels. My current strategy is to get ho…
... ] or higher droids. On the lower (and higher class droids) levels ... -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... 1, carry is set if lower bit was set
jr ... -
tape vs diskWhy people use *.tap & *.zxs when (?)??????????(?) *.trd ?
... bass control only makes it lower)
So it could ... -
Your favourite machine apart from The SpectrumI've asked this on a couple of other sites, so now it's time to ask it here: what is your favourite machine, forgetting about the Speccy? For me, it'…
... rate of the C64 is lower than the Spectrum because the ... the redraw rate will be lower on a C64 thanks to ... Tournament will be a lot lower on a 1.4Ghz Athlon ... -
Your favourite machine apart from The SpectrumI've asked this on a couple of other sites, so now it's time to ask it here: what is your favourite machine, forgetting about the Speccy? For me, it'…
... Tournament will be a lot lower on a 1.4Ghz Athlon ...
