-
Parts listAre there any list of parts - caps, resitors, transistors etc. - for Spectrum motherboard revisions. Im thinking I may need to replace te electrolyt…
The Spectrum 48k service manual from page 50 onwards. It is however only for Issue 1,2 and 3 motherboards in the 16/48 models. -
"Weird" Spectrum +3Hi folks. I've just dicovered that one of my +3's has an Issue 1 board, with all the mods that are mentioned on guesser's website - the other has (w…
... my +3's has an Issue 1 board, with all the mods that ... assume is) the more common Issue 2 board.
1!
(Also according to ... ]
This is on the Issue 2 board?
... '88 but still using up +3 boards.
... -
"Weird" Spectrum +3Hi folks. I've just dicovered that one of my +3's has an Issue 1 board, with all the mods that are mentioned on guesser's website - the other has (w…
... bought the Issue 1 Speccy, i already had a working +3, so my ... is),
3; and finally i noticed these mods on the underside ... revisited the thread about Spanish +3's in which the existence ... reading about the factory mods on the Issue 1 boards, a little bell ... -
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 …
... four distinct versions of the Spectrum 48K ULA:
[LIST ... : Original ULA, found on Issue 1 and early Issue 2 boards. Have a ... certain TV makes. Found on Issue 3 boards, spider mod was not ... '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 …
... four distinct versions of the Spectrum 48K ULA:
... Original ULA, found on Issue 1 and early Issue 2 boards. Have a ... certain TV makes. Found on Issue 3 boards, spider mod was ... person designed the complete ZX Spectrum with that complexity (ULA ... -
Help with 1-bit sampled soundHi all, I've been sent over this way from the CPC Wiki forums as you guys may be able to help me more specifically with a programming query. Firstly…
... the beeper circuit on an Issue 4B (taken at the speaker ... ). The command used was "beep 1,60".
Note the ... (this differs from, say, a Spectrum +3 whose "beeper" output is very ... -
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…
... (6) -
--------------------------------------------------------------------------------
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 ... -
Dot crawl?Hi, As I'm rather new to the hardware of the spectrum, just to confirm: is this video showing "Dot crawl" ? [url]https://www.youtube.com/watch?v=_U…
... is my favourite (my old Spectrum+), a good BAD example: :lol ... HIGH signal was only 3.04V, there were 3 cases, where it ... , and 3 cases, where it was 2.84V. The ISSUE 1 ULA can ... do only 1.48V.
The ... -
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…
... with a VHS. Got an issue 3 and 1 ZX81. Still getting the ... a cursor.
The issue 1 has all chips in sockets ... at the chips, but for 3 ZX81s to "die" where they ... Zorn has done for the Spectrum?
I do like ... -
Question for ZX81 GurusI have an ISSUE 1 ZX81 with a 2C184E ULA. If I ever need to change it, can I use one of the newer 2C210E ULAs? If I can, are there any other mods th…
... lot.
I have 3 ZX81s 2 with the 210 ... good picture.
The Issue 1 board gives a signal (BLACK ... upgraded OK with no other mods to the system. Unfortunately there ... -
ZX81 ULA questionRecently, I got a nice bundle of kit comprising of a ZX81, Memotech keyboard, PSU and brand new 16K Sinclair Memory pack. The ZX81 has a ULA with no…
... .
The Spectrum in question is an issue 1 with ULA marked ... definition. The module on an Issue 3 is fine
[IMG ... going to keep the Issue 1s original. The Issue 3s have all ... when saving on the 2x Issue 3s. I'll check the ... -
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 …
I think that you are after a picture of the track side of the PCB of a Spectrum 128k +2 grey.
I have a issue 1 PCB and a issue 3 PCB. I can take a picture. Which one do you want a picture of?
[I][B]Mark[/B][/I] -
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 …
... a Spectrum 128k +2 grey.
I have a issue 1 PCB ... and a issue 3 PCB. I can take ... would like a picture of issue 3 PCB. -
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 …
... /15689563669_b3d7068a96_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB trackside #1[/URL]
< ... 7465/15253325134_d6eb5292dd_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB trackside #2[/ ... 8655/15874928382_ddabdbd611_o.jpg"]ZX Spectrum +2 Grey Issue 3 PCB #1[/URL]
Ways to identify spectrum issues with out opening them?A good while ago, I'm sure I saw some posts on here about how to identify what issue speccy you have by looking in the expansion port to see what hea…
... a Spectrum +, though some rubber-keys are an issue 5 ... difference that identifies these. Issue 3 has, to the left ...
In summary:
Issue 1: Heatsink down side, trimmer holes ... transistor on CPU.
Issue 3: Heatsink along back, big ground ...DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…
DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…
... on everything from an issue 1 Spectrum to a +3 with no problems.
DivMMC Enjoy - I'm not enjoying it!My DivMMC Enjoy arrived today. Excitedly I rushed home to plug it into my +2a. I have quite a few SD card/CF solutions for my computers so I know wha…
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…
... the Spectrum 48K ULA:
- 5C102E: Original ULA, found on Issue 1 ... and early Issue 2 boards. Have a ... certain TV makes. Found on Issue 3 boards, spider mod was ... 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…
... br />
The Spectrum ULA is a good example ... wrong in the original Spectrum, necessitating the “dead cockroach ... 3C112E and later) and the Spectrum board (issue 3 onwards).
1 to 5, keys Q ... question, and a [i]1[/i] indicates we are ...2015 Games ListHi, this is the thread I use for the 2015 Games List. Note: Due to forum update policies, the latest version of the list will always be found somewh…
... Games, 7 new links, and 3 hours later, it's finished ... need to discuss the individual mods anymore, yay!
[[url="http ... -cmi-library-4-zx-spectrum-sampletracker"]link 1[/url]]
[[url="http ... Traxtor[/b]
[i](match-3 like puzzle)[/i]
by ...Sinclair Research Limited - An Alternate Reality.So, we all know that Sinclair Research went down the tubes because of a lack of focus on the core product, computers. We know that Clive wasted it on…
... />
Now if the Sinclair Spectrum+ 128k had been given the ... simply plugged in (like the issue 1 board could have another 32k ... keyboard. It needed a single 3.5" floppy drive in place ... modes, loading from an optional 3.5" floppy.
The Psion ...Opus Discovery "the big switch on" (after 20 years)I have a few of these Opus Discovery's with different Eproms in that have not been swiched for 15-20 years or so . I am in no rush to switch any on …
... Here is a bit from Issue 1 of the SDC Newsletter about ... the single sided 40 track 3.5 drive units are hard ... and not for the 128k Spectrum appears to be documented ... of your configuration
3 Config - the main program< ... user refers to drive 3 or 4"Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …
... $00000000);
// Various mods which alter the keyboard behaviour ... PutWord(@Memory[$11EF], $00ED); // Trap 3 - cleanup Trap vars.
SPECTRUM".
For Idx := 1 To Length(Str) -1 Do Begin ...Was it all Yellow?I've got this vague memory of my mates first, early 16k model ZX Spectrum. Am I correct in thinking the the white (Paper 7 / Bright 0) had a slight y…
... first, early 16k model ZX Spectrum. Am I correct in thinking ... later models?[/quote]
Issue 1 and issue 2 boards needed the colour ... .
The circuitry on issue 3 (and later) boards was improved ...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 ... -Amstrad-CPC-PCW-464-6128-Spectrum-3-/371871687672?hash=item569547a3f8:g:Ko0AAOSwx6pYqe2f ... for the +3?
[quote="1024MAK;897037"]1> The ...Purchasing Advice for an ignorant AmericanHello, I am a retro computer enthusiast who lives in the United States. I am currently looking into importing a model from the UK, and would like whi…
... shipped with the issue 1 PCB.
[*] ZX Spectrum 48k - same ... same PCB as the +3 but without the disk ... been fixed.
[*] ZX Spectrum+3 - Like the +2A but has ... a built-in 3 inch single sided disk ... +2A, +2B and +3, all machines used 9V DC ...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!…
... a development of the Sinclair Spectrum 48K...
... it, the former USSR Spectrum like computers are further ... therefore developments of the Sinclair Spectrum 48K...
... Spectrum 16k/48k issue 1 and issue 2 boards would not work in issue 3 ...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!…
... it, the former USSR Spectrum like computers are further ... therefore developments of the Sinclair Spectrum 48K...
... Spectrum 16k/48k issue 1 and issue 2 boards would not work in issue 3 ... designed for "compatibility with Spectrum" means "designed to be ...Spectrum +2 datacorderHi, my Spectrum +2 datacorder isn't working. Does anyone know if I can still load software through the tape/sound socket at the back of the machine i…
... protection, you can damage the spectrum by
applying a ... if you put a spectrum 48k sound cable you ... putting signal in the output spectrum signal.
Bye ... Could 128k +2 grey Issue 1 and Issue 3 boards contain different components, values ...
