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Testing a +2I recently picked up a non functioning Spectrum +2 Grey (Issue 3 board?), and am just beginning to go through and see what needs to be done to it. I …
... non functioning Spectrum +2 Grey (Issue 3 board?), and am just beginning ... multimeter test data of 48K ZX Spectrums.
It's a ... , ROM function, capacitors
3. Check memory function
a ... -
A new site for an old projectThe 'Interface 1bis' project site has been moved to: [url]https://sites.google.com/site/interface1bis/[/url] In fact, it's not only a simple relocati…
... the approach used in the ZX Microdrive systems, potentially making it ... to work with an Issue 3 48k, and an Issue 4a 48k+, and ... -
Issue 2 crashes after about 30 minsHi Guys, I have an Issue 2 zx spectrum that seems to get graphic corruption after about half hour of playing, then finally falls over and crashes. …
... +5V dc.
A ZX Spectrum consumes approx 800mA (0 ... .
Even on later issue Spectrums (which have the heatsink ... , I left my Spectrum (a issue 3 IIRC) on for many, many ... -
ULAs interchangeable across issuesHi all, Now that I'm retired, I'm looking again at 8 bit computing :) I'm attempting to revive a spectrum 48K. I'm going to swap chips in/out from…
... in depth in [I]The ZX Spectrum ULA[/I] by Chris ... board on the issue 3 board onwards, so an issue 2 board requires ... -
Possible dodgy +2 - resets when loadingSo I have a grey model +2 with a recently refurbed tape deck (new belts and cleaned heads). It might be a product of bad loading, but from what I ca…
WoS healthHey guys, Just wondering why the WoS was updated so much time along (15-sept). All good with Mr. Martijn I hope. I'm stalking the forums for a few y…
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With the exception of ZX Shed, every forum has had a ... post within the last 3 days! That's not something ...WoS healthHey guys, Just wondering why the WoS was updated so much time along (15-sept). All good with Mr. Martijn I hope. I'm stalking the forums for a few y…
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With the exception of ZX Shed, every forum has had a ... post within the last 3 days! That's not something ...Born again Speccy user with problemsHello all, Firstly I'd like to say a big hello - this is my first post! When I was 8 or 9 or so my dad bought a ZX Spectrum 48K and a whole bunch o…
... the loading tones from the ZX speaker though and at one ... headphones...
[QUOTE=DEATH]Issue 4B board in an '83 ... 'd expect an issue 2 or an early issue 3 board [/QUOTE]
48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... , however a further issue concerning I/O to the ZX Printer etc ... in machines containing this ULA (Issue 2 boards).
[*]6C001E-6 ... certain TV makes. Found on Issue 3 boards, spider mod was not ... Smith's excellent book, "The ZX Spectrum ULA".
48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... however a further issue concerning I/O to the ZX Printer etc ... certain TV makes. Found on Issue 3 boards, spider mod was not ... Smith's excellent book, "The ZX Spectrum ULA".
< ... one person designed the complete ZX Spectrum with that complexity (ULA ...48k+ ULA'sI've got three ULA's here that only work in certain boards. Thought I was going nuts, swapping, changing stuff around. But hey, I've got two working …
... /PCB%20Images%20%28orthogonal%29/ZX%20Spectrum%20PCB%20issue%202%20wHS ... reckon it's good for issue 1-3 machines. Not a clue ... />
I'd say till Issue 2 then, as your picture ... confirmed to be compatible with Issue 3.Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…
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1/+1 - ZX Spectrum(issue 1-2/3-6) 6 - Scorpion ZS256 ... - Quorum 128/+
3/+3 - ZX Spectrum +2a,+2b/+3 8 - Pentagon 128(1991 ...Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
My rubber keyboard ZX Spectrums (I think at least ... -590840, (Issue 3)
011-809283, (Issue 3B)
016-883193, (Issue 3B)
028-130891, (Issue 3)
045-345552, (Issue 3B)
S01-035639, (Issue 4S)ZX81 + 16k RAM Pack + Original PSU... What's it worth?Hey guys Got my ZX81 this morning its in excellent condition.. [IMG]http://s30.postimg.org/iwetzxku9/IMG_20140818_142443.jpg[/IMG] However, my T…
... memory.
A second ZX 81 is now giving me ... .
All these are issue 3 with 2C210E ULAs
Issue 1 ZX81 but I'm ...Machine Code in 30 minutes - car gameWotcha folks, 30 years on and I'm still struggling with Machine Code. I'm going through the 30-minute tutorial on the Chuntey blog and it's all made…
There's an article in the original version of issue 2 of ZX Shed that might help, the article starts at page 70.
[URL]http://homepage.ntlworld.com/richard.chandler2/ZXShedIssue03.pdf[/URL]Damaged S2 IC 26?I'm after more advice, pretty please :) On my S2 board there appears to be a damaged chip, it looks to be IC 26 and is marked as 74LS158PC, it appea…
... selection links in the issue 2 and issue 3 circuit diagrams.
< ... topic in my videos called ZX Spectrum Hardware Description and 48K ... ZX Spectrum Repair (No. 5): [URL ... [/URL]
The issue 2 PCB is set up ...ZX81 and Analogue TVsI recently bought a really nice ZX81 on ebay in amazing condition, but I'm having issues tuning in an old analogue TV to lock onto the signal. I und…
... issues that were manufactured: issue 1 and issue 3. Issue 1 boards generally have ... layer on the bottom. Issue 3 boards generally have a red ... resist layer, however early issue 3 boards use a green solder ... friendly folk on the Sinclair ZX World forum 8-) [/quote ...Modern PSUHello everyone, I'm looking for a modern PSU for my Spectrums and my dual set of 3.5'' floppy drive+HxC floppy emulator. The one for Spectrum should …
... improved in later issue boards (some issue 4 variants and issue 5 and ... 14V. Also the heatsink on issue 3 and later boards is slightly ... to look for, assume your ZX Spectrum 16k/48k/+ does not ...MISSING HACK PACKSI've just gone through my downloaded games for 2014 and realised I missed quite a lot of games. I've published about 15-20 new hack packs. HAVE I MIS…
... corkers (HUGE GROAN) my multiface 3 is getting elderly you know ... -hack article in ZXF or ZX Shed some time ago which suggested ...MISSING HACK PACKSI've just gone through my downloaded games for 2014 and realised I missed quite a lot of games. I've published about 15-20 new hack packs. HAVE I MIS…
... -hack article in ZXF or ZX Shed some time ago which suggested ... my ageing setup of a +3, multiface three, and some custom ...PCB thicknessHas anyone here got a micrometer and access to a 48k and a 128k grey? Im convinced the greys have a thinner pcb which would explain certain devices a…
ZX Spectrum 16k issue 1 board
Board only ( ... .69mm
ZX Spectrum 128k+ (Grey) Issue 3
Board only (area ... .74mm
ZX Spectrum 128k+ (Grey) Issue 1 coming up later ...Photo of the Spectrum +2 electronic board.Does anyone know where I can find a photo of the down side of the electronic board of Spectrum 128k +2? I mean NOT the side which you can see in …
... .com/8634/15689563669_b3d7068a96_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB trackside #1 ... .com/7465/15253325134_d6eb5292dd_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB trackside #2 ... .com/8655/15874928382_ddabdbd611_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB #1[/URL ...leads to load games from phone?Hi. I'm wanting to load games into my rubber keyed model and can't seem to get a signal into the computer. I'm guessing I need something like this [u…
... around 89. Started using Zx spin around 3 years ago, got back ... 48k last month. Intermittent keyboard, issue 3, fine it seems otherwise, it ...ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... looks nicer, but the real zx spectrum showed exactly the same ... today, with my Spectrum 48k, issue 3, (early timing), without any periferals ...ULAAre ULA's (for Spectrum 48k's) interchangeable through the different issues? To give some background, to work out what was wrong with an old speccy I…
... , however a further issue concerning I/O to the ZX Printer etc ... in machines containing this ULA (Issue 2 boards).
- 6C001E-6 ... certain TV makes. Found on Issue 3 boards, spider mod was not ... Smith's excellent book, "The ZX Spectrum ULA".
BIN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... later) and the Spectrum board (issue 3 onwards).
The ULA ... my meaning.
The ZX printer, if attached, responds to ... count the ULA and the ZX printer, you run out of ... to become much of an issue, though.NTSC Compatibility?Correct me if I'm wrong, but wasn't the Timex 2068 the only NTSC clone built of the ZX Spectrum? And I use clone lightly... From what I underst…
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I tried my ZX Spectrum (16K, issue 3) on every TV in ...Composite picture qualityI have read many many discussions here about the composite video modification of the Spectrum 16/48K models. I have choosen one of the simplest comp…
... a scanline above, when ZX Spectrum hasn't even output ... characters were sent by the ZX Spectrum!
Which ... space permitting)
Issue 3 schematic
C5 1uF ceramic ... space permitting)
Issue 3B schematic
C5 1uF ...Sudden death of ZX Spectrum 48KHello A friend gave me a 48K rubber keyed Spectrum. I brought it home, hooked it up to my little TV and powered it up. I was very happy to see t…
... also watched Zorn's excellent "ZX Spectrum Initial Tests" video and ... your great YouTube channel. Your ZX Spectrum videos are just excellent ... is actually not an issue 2 but an issue 3. I still don ...128 +2 grey, no video but still beepsGot a grey 128 from ebay, im using a 48k spectrum powers supply, all voltages seem ok. I cant get compostie video using the normal mod or from the 8…
If you have the issue 3 main board, be aware that ... around, as described in section 3 of [url="http://www.benophetinternet ... .nl/hobby/vanmezelf/ZX%20Spectrum%20128K%20video%20fixes%20and ...
