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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…
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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 ...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"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 ...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 ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... /en/oki-78sr-5-1-5-w36-c-1.html"]power.murata ... /en/oki-78sr-5-1-5-w36-c-1.html[/url]
Apparently Issue 2 and Issue 3 can have problems with ... -Regulator-replaces-7805-for-ZX-Spectrum-48K-Issue-2-to-6A-/122447111992http ...ZX Spectrum Next Kickstarter Launchedhttps://www.kickstarter.com/projects/1835143999/zx-spectrum-next
... exclusively even on the + 2A/+3, models, but I didnt hear ... that runs on all Spectrum like machines including issue 1 16K Spectrums?
ZX Spectrum Test PCB I recently read about one of these (I think it may have been the Retroleum site but I am not sure) and I thought "What a great idea" . As pictured …
5C102E: ZX Spectrum Issue 1 boards
5C112E: ZX Spectrum Issue 2 boards
6C001E-5 ... for ZX Spectrum Issue 3 boards
[b]6C001E-6: ZX Spectrum Issue 3 boards[/b ... ]
6C001E-7: ZX Spectrum Issue 4A boards ...Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …
... />
This is an Issue 6A Spectrum+ much like the last one ... aim will be to do 3 things:- 1) But the Traco will ... around 2) New keyboard Matrix 3) And a complete recap .Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…
... ZX81's, 16k Spectrum's, 48k Spectrum's, ZX Spectrum+, Toastracks, and +2 ... Spectrum 16k/48k/plus machines with early PCB's (issue 1, 2, 3, ... and maybe some issue 4) that have ... ).
For a ZX Spectrum 16k/48k/+, that means you ...Troubleshooting my +2To put this in context: a while back (i.e. late last year and earlier this year) I was looking to put together a compilation of modern Spectrum games…
... the +2B that's an issue 1 board and says +2A ... "Doug" on the "ZX Spectrum +3 repair" thread) which has strange ... the case and has an issue 4 board) has an ... production cost of each +2 Spectrum. It's also a ... on every +2, +2A, +3, CPC464, CPC664, CPC6128, and all ...Parallel to serial z80 i/o portI have an Opus Discovery and an Alphacom 32 printer. I want to see if I can make a cable that will use the Opus Parallel printer port. The question i…
... but here's the issue
1) The Spectrum is attached to ... the Opus Discovery via a Multiface 1 ... load "Zeus" from tape
3) At this point no issues ... need to load zeus from 3.5" Floppy not tape - I ...Req: Tintin on the Moon Kryoflux dump to repair my original disk!!Obtained a copy of Tintin on the Moon but the disk has been completely formatted and needs repairing!! Have the DSK image and created Kryoflux stream…
... not I believe. The issue is they have thousands of ... Controller and Amstrad FD-1 you can write those ... real hardware!
Spectrum +3 disks are really getting expensive ... KF and an FD-1 you can write the ... steams straight back to a 3" disk like I did ...If Sinclair computers had not been sold...I was just having a random thought. If Sinclair Computers (or the rights to them, not sure how it 'worked' back then) had not been sold to Amstrad…
... added with each new board issue.
Even ... ROM)
[*]Interface 1 released
[*]ZX Spectrum+ (better keyboard, ... future models)
[*]ZX Spectrum+1 (80k RAM, two built ... Printer dropped)
[*]ZX Spectrum+3 (all the features of the ...Finding a good (UK) external switch mode power supply for the basic 48k and 128k ZX SpectrumsThis idea has probably "done the rounds" by now . I think I have heard about it a bit late . This thread with look at replacing the original "heavy l…
... ...
The ZX Spectrum 16K, 48K and plus machines ... the components in a ZX Spectrum run hot, that electrolytic ... to some capacitors on issue 1 and issue 2 ZX Spectrum boards).
faults.
Note that ...Donkey Kong And The Wrong ColoursI vaguely remember asking this question many years ago, but it seems worthwhile in the context of the frankly amazing hack/mods I've just discovered …
... upload.wikimedia.org/wikipedia/en/3/3f/Donkey_Kong_NES_Screenshot.png[/img]< ... game's colour with the Spectrum's limited palette, [b ... .
The ZX Spectrum also does not have its ... RGB values. Especially the issue 1 and issue 2 boards where the colour ...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…
On unmodified boards that are issue 1 to issue 3, and issue 4A, the -5V will ... .blogspot.com/2019/08/zx-spectrum-16k-48k-and-plus-models ...
