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Datasheets of the Spectrum 128K +2 ICs.Is there any place where I can find the datasheets of the ICs of the Spectrum 128K +2? I have tried to look for each of them separately but for some…
... the relevant model and PCB issue number.
For information ... ZX Spectrum +2A/+2B, and +3B are [url="http://zxnet.co ... -
Getting a +3 working again (keyboard & tape socket issues)So, as part of my Spectrum restoration project I will also try to tackle the problem child among my fleet, the +3. PROBLEM ONE: Ever since I firs…
... . Might that also be an issue here?
[quote ... Spectrum +2A/+3, +2B, and +3B here[/url]. [url="https://www ... -
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!…
... Sinclair Spectrum 16k/48k issue 1 and issue 2 boards would not ... work in issue 3 and later machines. Again ... produced +2A, +2B, +3 and +3B there were further compatibility problems ... -
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!…
... Sinclair Spectrum 16k/48k issue 1 and issue 2 boards would not ... +2A, +2B, +3 and +3B there were further compatibility problems ... enough, that's a different issue.
[quote ... separate entries for +2B and + 3B.
Thank you ... -
The "Big Issue" about the ZX 48K rubber key Spectrum . Which Issue is best? There is no easy answer as every 48k rubber keyed Speccy owner will have their own favourite so it will be pretty subjective . But my favourite a…
Many issue 4 boards (A/B/S) ... , and divIDE. (Not an inherent issue with the board itself, though ... speaking, anything starting from issue 3 (or 3B) is a good choice ... -
ZX Spectrum spare parts : "endangered" and functional "extinctions" only It struck me how some Spectrum spare parts or parts that were used with Spectrums and that were commonly available are no longer available . The em…
... ]In practice[/i], a non-issue I think.
2 ... ]in practice[/i], a non-issue.
3) The composite ... ? Who knows. [-O<
3b) LM1889 (National Semiconductor, used in ... /> Both for 3a & 3b: only an issue if ULA isn't ... -
Spectrum 128k 2a or not 2b....Just picked up a +2 black case version and I'm in as little bit of a quagmire, The case is definitely black, has '+2A' stamped on the bottom, but in…
... fitted modification to the Z70833 ISSUE 1 board, this was incorporated ... the PCB on the ISSUE 2 and ISSUE 4.
Other ... the blanking modified, 2b and 3b are already done to approx ... -
Spectrum 128k 2a or not 2b....Just picked up a +2 black case version and I'm in as little bit of a quagmire, The case is definitely black, has '+2A' stamped on the bottom, but in…
... out-of-spec voltage level issue for the blanking.
3B) the "easy mode" modification is ... -
Double Buffering Artefacts on Real HardwareI have a project that I've played around with for a while and always tested using emulators, either ZX Spin or Spectaculator. It is a 128k game th…
... any IM2 program written for issue 1 of ZX spectrum, the ... about the 'setting I to #3B' method at some point. Mostly ... -
Non-Ferranti ULA 6C001E-7?Hello! I don't like Iss2 boards that much but after revising one Speccy like that for a friend, the results were so positive that I decided to have …
... it.
[CODE]DATE ULA ISSUE(s)
8214 ... br /> 8341 6C001E6 3B
8342 6C001E6 3B
8343 ... 8401 6C001E6 3B
8402 6C001E6 3B
8403 6C001E 3B
... br /> 8419 6C001E7 3B
8426 6C001E7 3B
8428 6C001E7 ... -
Trying to repair a Speccy 48k - No PulsingI've had this machine for ages. I'd I've been putting off fixing it for some time now. So a couple of days ago I pulled it apart and started prob…
... have not found it, the 3B schematic is on WoS [url ... TR4/TR5 with a later (issue 6A) design ([url="http://www ... if this is only for issue 4S boards or if it ... affects other issue boards.
[b][i ... -
How to join two RZX files togetherI wonder is there any utility which could join two RZX files together? If it is possible at all...
... snapshot (rollback point #1)
3b) Continuing stream of input data ... of behaviour you want. The issue is that normal playback of ... in the order 1), 2), 3b), 4b).... etc., skipping over the ... -
Need help from people with real 128/black +2 and grey +2A/+2B/+3.Please, if you have time and inspiration, run [url="https://www.worldofspectrum.org/forums/discussion/55518/test-of-screen-switching-timings"]this t…
... +3B behaves. On the other hand, my machine is a +2B issue ... /> +2A/B (black enclosure)
+3B (black enclosure)[/spoiler] -
Need help from people with real 128/black +2 and grey +2A/+2B/+3.Please, if you have time and inspiration, run [url="https://www.worldofspectrum.org/forums/discussion/55518/test-of-screen-switching-timings"]this t…
... +3B behaves. On the other hand, my machine is a +2B issue ... /> +2A/B (black enclosure)
+3B (black enclosure)[/spoiler][/quote]
48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... I believe is an issue between the Z80 and ... the board. However, only the issue 6A now works.
< ... a bit perplexed why the 3B and the 4S should ... a schematic for the relevant issue board, then check that ... (polarity) as on some issue boards, there is a screen ...48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... 4.90v (Both), 12.1(3b) and 11.85(4S) and ... -4.9 (3b) and -5.15(4s) - for ... a schematic for the relevant issue board, then check that you ... round (polarity) as on some issue boards, there is a screen ...New video about S-video modification on Issue two 48K Spectrum.I just finished an s-video modification on an Issue two 48K Spectrum so I made a video about it. Most of the technical details are in the video; if y…
The issue 4 of yours appears to ... noisy display when compared to issue 2.
I am ... -video modded spectrums (board issues 3B and 4S) and none looks ... viewing computer displays but your issue 2 isn't looking all ...48K picture quality vs motherboard revision?A subject thas has probably been covered elsewhere and hundreds of times, I know. But I never quite understood if there was some identifiable patt…
... be expected that the later issue machines give a better picture ... a ZX Spectrum+ with a issue 6 board most of the ... Amstrad +2A, +2B, +3 or +3B (all via RGB).
+3 - beeper sounds but no AY musicHi guys I am repairing a plus 3 revision 2 board that had no sound at all. Using schematics from https://zxnet.co.uk/spectrum/schematics/ I manage…
... a +2A, +2B, +3 or +3B, the voltage regulators are in ... test.
The only issue I have is that I ...48K ZX Spectrum 48K Recap (Capacitors) Or Not?I have seen arguments "for an against" on this subject by some "high calibre" experts . So if the experts can differ on this question then my questi…
... .
On the issue 1 and issue 2 boards, the electrolytic ... Spectrum+2, +2A, +2B, +3, +3B, Acorn Electron, Acorn Atom, BBC ...ZX Interface 1Hi, I have a ZX Interface 1 which I have bought online. It does not seem to work. When using CAT1 or any other specific commands, the compute…
... Interface 1 is compatible with issue 2 (TR6, the “spider” needs ... to be fitted though) to issue 6A 48K and Plus machines ... the 2A, 2B, 3 or 3B Amstrad designed machines.
Quirky nerdy hardware quiz time[b]Quirky nerdy hardware quiz time[/b] [list=1][*]How many transistors are on the issue one ZX Spectrum PCB? [color=#FFFFFF].[/color] [*]Which d…
... transistors are on the issue one ZX Spectrum PCB? ... fitted with the Z70500 issue three boards[/color][/b]. ... points to McKlaud for saying issue three boards :D
issue two board? [b] ... Spectrum +2A/+2B/+3/+3B computers can be configured ...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…
... , +2, +2A, +2B, +3 or +3B machines (plus many other classic ... logic chips.
On issue 5, 6a, 128k (toastrack) and ... been fitted (boards with an issue number of 4a or lower ...16pf Capcitors for C72/C73 issue 3b. Can I use 18pf?Looking at the service manual it states to use a 16pf ceramic disc capacitor in positions C72 and C73 on issue 3b boards. Is this very critical in bo…
... . Luckily I have a donor issue 3 board I can salvage ... passive components for my redrawn 3b build. So far I have ...Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…
... the z80 for 69888 tstates, issue a z80 interrupt and update ...crashhow come a new issue of zzap64 is being released? is there gunna be a crash millenium edition? we deserve it.
how come a new issue of zzap64 is being released?
is there gunna be a crash millenium edition?
we deserve it.crash..is there a site dedicated to crash magazine? i found a site dedicated to zzap and thought it was fantastic,every page of every issue scanned in.....…
is there a site dedicated to crash magazine?
i found a site dedicated to zzap and thought it was fantastic,every
page of every issue scanned in.......
please help!INPUT magazineHowdy folks! Does anyone know of an online archive of this early programming mag? I'd like to get my hands on the issue which had a random maze gene…
Howdy folks!
Does anyone know of an online archive of this early programming mag? I'd like to get my hands on the issue which had a random maze generator (no. 7 I think).
Thanks.Wanted:Installation Tape/File for Disciple Interface (ZX Spectrum)Need to rescusitate my Disciple Interface. The last time I worked with it - I fitted it with a new chip - that uses DOS version after 3b. That was …
WANTED: EL GOLPEI look for a game named "EL GOLPE", by Scanner software, 1985. The only reference of this game is an advert published in MICROHOBBY issue number 32.
I look for a game named "EL GOLPE", by Scanner software, 1985. The only reference of this game is an advert published in MICROHOBBY issue number 32.
