-
ZXCF conundrumsBefore I start spending time prodding my ZXCF, I ought to ask... Anyone else have problems with the ZXCF losing its memory between power cycles? I'v…
... , presumably that's just a diode drop's worth). However, I ... -
New Guy Wants Speccy - SWAP !Hi, I`m new here so here is a little background info ! I always had a C64 when I was in my teens in the 80`s, my friends had Spectrums, so it was alw…
Multiface One - brokenFor a long time I have had a Multiface One, that since I got it never worked. When I attach it to the computer (edge connector completely cleaned), i…
... x 74LS260
1 x diode on B14 (edge connector)
diode?
Is there anything ...What's this hardware?[URL="http://www2.snapfish.com/slideshow/AlbumID=1351742020/PictureID=39192676020/a=1759991020_1759991020/otsc=SHR/otsi=SPIClink/COBRAND_NAME=snapfis…
... are protected by a 1N4xxx diode and an electronic capacitor for ...Schematic error.. (?)Hi, I was browsing this page: [URL="http://microhobby.speccy.cz/150203/hardware/bus.html"]http://microhobby.speccy.cz/150203/hardware/bus.html[/URL]…
... am I wrong).
The diode D2 is suppose to be ...3.5 drive (external)Hi, I read that I have to put a 'diode' on the ribbon cable (for the RDY signal). But so far I could not find where can I put it on the cable... Any…
Hi,
I read that I have to put a 'diode' on the ribbon cable (for the RDY signal).
But so far I could not find where can I put it on the cable...
Any help, please?
Regards
Chrisissue 2 sound /loading problemshi guys ive just done component video conversion on this issue 2 board that went well..but when i had case off i did notice that there was a glass di…
... that there was a glass diode by where the ear connection ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... problems, speaks about of a diode (IN 4148 ) and of a ...Possible tape loading modI've got an idea for improving the reliability of loading from mp3 players or computer soundcards on the +3 or Black +2... It seems to work but I ju…
... a 220 ohm resistor across diode D38 it allows me to ... just concerned about what that diode is actually doing... I guess ...Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... fine after correcting the power polarity.
Usually I find ...Testing memory/transistors etc with multimeterAnyone have a rough guide to show how to do this properly? Im using the diode setting on the multimeter to test various components, im touching the b…
... this properly? Im using the diode setting on the multimeter to ...Need space, selling items from my spectrum collectionHi everybody, I need some space and therefor I'm selling items from my spectrum collection. The following I have for sale: (I'll try to write as mu…
... long time ago to reverse polarity to power an Oric-1 ...ZX Setup QuestionsHi guys! I have been reading around the forums and love what is goin on. Anyways I just got my first ZX Spectrum (16k, rubber keys, boxed and compl…
... the voltage input with reversed polarity (center negative) but am hesitant ...Alphacom 32 Printer - Power supplyI've just received a Alphacom 32 Printer via ebay. However, its not the correct power supply, doesnt even connect to the printer. Just been stuck in …
... I dont know what the polarity its etc.
Anyone ...faultyi have a zx48 that will not tune in it allways seems to be just out of tune what could cause this fault also half of the keyboard doesnot work there …
... a repaire done on a diode and it looks like its ...Would this work for Scart blanking in +3?I was looking at RGB to Scart cable solutions over at CPCWiki. Theres [URL="http://www.cpcwiki.eu/index.php/TV_SCART_cable#Alternative_RGB_Wiring"]o…
... put a jump wire with diode from Scart's composite pin ...Getting absolutely no video from a 128+I'm trying to get a friend's toastrack 128 to show video and I'm not having any luck. I'm in the US, so I don't have access to any TVs that can take …
... amps; it has the right polarity and has been tested thoroughly ...More troubles: The microdriveRecently bought a used Spectrum Expansion System incl IF1 and microdrive - in a really nice looking condition, along with the accompaniing software o…
... - a short blink from the diode and the cartridge is pushed ...Intermittent sound cutting outHello, I'm resurrecting an old rubber key spectrum. Originally it had no sound at all, diode D9 was blown, I replaced it with one from my other dead …
... had no sound at all, diode D9 was blown, I replaced ...TR4 continues blowing up!The TR4 of my Speccy Issue 3 continues burning even after I changed all electrolytic capacitors and the BA157 diode. If these things serve only to h…
... electrolytic capacitors and the BA157 diode.
If these things ...48k PSU UpgradeCan anyone give the definitive word on a PSU upgrade (rather than just a replacement) for 48k machines? I'm thinking of adding at least an IDE inter…
... 'm paranoid about getting the polarity wrong and making my Speccy ...ZX81 back porch fix using LM1881Hello! Has anyone here did the back porch fix for ZX81 using LM1881? I did it this weekend and instead of clear black on white i got black on dark g…
... , it did not work. Maybe diode is faulty, i don't ...Low level microdrive programmingSo I'm on my lunch break trying to find out about low level microdrive programming (without using IF1 ROM). I see one can use port 0xe7 to read and w…
... work?
What is their polarity and meaning?
How do ...The great 128k ConversionWell, I am not sure if it is going to be great. Hopefully it will! This evening, I set about getting my Issue 6A Spectrum Plus working. I suspecte…
... connected up with the wrong polarity, back at some time in ...ZX Breakout availabilityOK - after much procrastination, this board is now available! Details on the board are here: - [url]http://spectrum.alioth.net/doc/index.php/ZX_Bre…
... is probably solvable with a diode but I've not tested ...7805 Regulator to RECOM modI really need to get shot of some of the 7805 regulators in some of my Spectrums. Latent heat is affecting keyboard membranes etc. As I am not a ha…
...
[*]Do I require a diode across the RECOM to protect ...Spectrum 128 +2 greyhi all, nice to be here, i am trying to reborn my spectrum and i need some help please, i get a new 79s05 to replace, also a bc307 to replace the…
... not the same for the polarity cbe/ebc (i dont know ...Kempston Joystick on Pentagon 128As most of you know, I'm currently in the process of building a Pentagon 128, good news first, almost everything is working nicely, except for the ke…
... tripple OR-Gate implemented via diode-resistor-logic which appears to ...Miniproject for the ZX Breakout: ZX SPIFor those of you who have a ZX Breakout or are building one (or have something with a CPLD that hangs off a Spectrum), I've just finished a mini-proj…
... /> - Supports CPOL 0 (normal clock polarity) and CPOL 1 (inverted clock ... polarity)
- Synchronous design that should ...
