-
Spectrum USB KeyboardI know you can buy these but how do you make one . What I am thinking of be similar to the type described in Issue 1352 of Micro Mart at page 45 .The…
... at page 43 of Issue 1341 "ZX Spectrum 48K Raspberry PI" I suppose ... of doing it the "ZX Spectrum 48 Raspberry Pi " from Tynmouth ... a USB keyboard for the Spectrum in the way that the ... -
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 ... internally, however a further issue concerning I/O to the ... in machines containing this ULA (Issue 2 boards).
- 6C001E ... excellent book, "The ZX Spectrum ULA".
B -
IN 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…
... ask the Spectrum’s video hardware what colour the border is, because ... the Spectrum’s video hardware ... 3C112E and later) and the Spectrum board (issue 3 onwards).
issue, though. -
Fixing Spectrum Display ProblemsI've been searching the forums and cannot find a definitive list of things to check/do. Would somebody be so kind as to list the troubleshooting step…
The advice rather depends on which version of the ZX Spectrum is causing problems.
Sorting out a 16k issue 1, or a 16k/48k issue 2 is rather different to sorting out a RGB problem on a +2B...
[b][i]Mark[/i][/b] -
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 …
... :- in "The Crash Online Edition Issue 23" : I have selected some ... integrated unit , into which the Spectrum 48k or Spectrum+ plugs. Provision is made ... a RAM disc within the Spectrum RAM area for fast file ... -
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 …
... above of a pillaged Issue 2 ZX Spectrum 48k
Definitely ... it . I am not a Spectrum "Christmas Compo philanthropist" but if ... buying a half decent Issue 2 ZX Spectrum I would estimate to ... ? Well , I think , the Issue 2 ULAs , I believe , are ... -
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…
... scanline above, when ZX Spectrum hasn't even output the ... were sent by the ZX Spectrum!
Which leaves ... space permitting)
Issue 3 schematic
C5 1uF ... space permitting)
Issue 3B schematic
C5 1uF ceramic ... -
Dead issue 3b with black and white barsHi all, I've been donated an issue 3b which has some nice black and white bars with a few flashing blocks. I've done a few RAM tests and could spo…
... and checked them against an issue 3 I have. Nothing really ... and checked IC26:
Issue 3 (working):
1 ... /> 16 1.879k
Issue 3b (non-working):
1 ... that issue 3 has been upgraded from 16k to 48k and so ... -
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 …
... for a "not very original" Issue 2 48k Spectrum:-
1) ... Buy 1 Issue 2 motherboard "said ... an empty plastic ZX Spectrum 48k plastic case that I already ... £11, and also some Spectrum 48k screws and rubber feet .
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 …
... is my "made-up" Issue II ZX Spectrum 48k[URL=http://s827.photobucket ...Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... my mum bought a ZX Spectrum (rubber keys) for the ... to a ZX81, a ZX Spectrum, an Oric 1, a ... lid is opened, a ZX Spectrum 48K+, Alphacom printer and a ... too difficult to solve that issue.
The only ... be a belt or pad issue.
I also ...What are the chances?Hi all, I've picked up an issue 3B, fairly clean board, no mods, wasn't starting correctly so I tried Brendan's diagnostic ROM and got this: [i…
... an issue 3B 48k I presume?
Assuming it is a 48k machine ...Some Nice Boxed Speccy StuffHi Folks, I have a few nice boxed items up for sale on eBay. Namely: 1 - ZX Spectrum Expansion System ([url="http://www.ebay.co.uk/itm/Boxed-Work…
... on what looked like an Issue 1 (s/n 10007) that ... .uk/itm/VINTAGE-SINCLAIR-ZX-SPECTRUM-48K-RUBBER-KEYS-COMPUTER-PLUS-EXTRAS ...Board schematic files.Where do I go to download Board Layout and Schematics these days?- All up to Issue 6a boards. It's time for some tinkering!
... Sinclair ZX Spectrum service manual 1984 ( up to issue 3B board )
The Sinclair ZX Spectrum/ ZX Spectrum + ... service manual 1985 (up to issue ... .
Spectrum 128 service manual 1989
Upper memory not available in issue 2A friend send me his issue 2 Spectrum for diagnosis. It boots okay but for some reason won't load games over 16kB. He sent also a Smart Card with int…
... the chip from my other Spectrum in the socket and the ... revision, though. Issue 2 on the malfunctioning and Issue 3B on the working ...Upgrading Harlequin 48K to 128K?I noticed this upgrade PCB on ebay for upgrading the Harlequin to 128K: http://www.ebay.co.uk/itm/ZX-Spectrum-Harlequin-48K-to-128K-Upgrade-Addon-PC…
... peops! I think the timing issue has put me off, but ... a Spectrum 48K, Spectrum+, Spectrum 128K, Spectrum +2 Grey, Spectrum +2 Black, Spectrum +3, Recreated ZX Spectrum, Harlequin 48K ...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 as above ... issue 6A PCBs as various minor improvements were made.
[*] ZX Spectrum ... keyboard, this is the ZX Spectrum 48k machine in the new case ...Running a Spectrum from a battery...?Here's a bizarre idea that crossed my mind the other day: is it possible to run a Spectrum from a 12V battery? You see, I've got this strange idea…
... ), 48k Spectrums that have had the power supply upgrade modification (issue 3B upwards ... supply.
Unless earlier issue boards are known to had ...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 …
Issue 4B ZX spectrum 48k
Here is a ... is currently is in a Spectrum Plus case with an "upgraded ...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 …
... link to some of the Issue s Spectrum 48k chips and caps[url ...Spectrum Computing Update ThreadThis thread has been created for us to provide updates for the Spectrum Computing Website. As well as providing updates, this thread is ideal if you …
... />
RANDOM ZXDB ENTRY: FORUM ISSUE 1
GENERAL INFO ... FOR: FORUM ISSUE 1
Title: Forum issue 1
Genre ... Price:
Machine Type: ZX-Spectrum 48K
Known Errors:
Comments ...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!…
... revision later brought the +3b (not a completely separate ... clone of the {ZX Spectrum 48K|Sinclair Research Ltd}.#The ROM ... clone of the {ZX Spectrum 48K|Sinclair Research Ltd}.#The ROM ... Russian clone of the {ZX Spectrum 48K|Sinclair Research Ltd} featuring ...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!…
... }.
ZX Spectrum 48K - The package included the books ... revision later brought the +3b (not a completely separate ... clone of the {ZX Spectrum 48K|Sinclair Research Ltd} with ... compatible with most {ZX Spectrum 48K|Sinclair Research Ltd} programs, ...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 …
... it "proper" later..This "project" Spectrum is the one I got ... apart Ok . It was an Issue 6A from 1984 .I have ... rubber keyed Spectrum before and I am surprised that Issue 6A can ... I have seen a ZX Spectrum 48k that HAS been recapped . I ...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…
... the-big-issue-about-the-zx-48k-rubber-key-spectrum-which-issue-is-best ... the-big-issue-about-the-zx-48k-rubber-key-spectrum-which-issue-is-best ... was not on an original Spectrum ,if it performed a very ... improves the usefulness of a Spectrum itself . I know this ...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 …
... key Spectrum 48k on the "to recap list" is a Gold Plated Issue ... to do the job.This Issue 3 PCB has quite a ...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 …
Issue 3B is the next one to ... /> I have just taken the Issue 3B out of an LMT keyboard ... too good for a mere 48k Speccy so this throw up ...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 …
Issue 3B Mystery
This was ... as I had done an Issue 3 before (now recased) So ... it up as on the Issue 4 these pads are tracked ... shows Black Screen and Red Border . So there is definitely a ...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 …
The LMT Keyboard and the Issue 3B Spectrum
Pictures like this ...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 …
... there" eventually and got purpley border screen display which at least ... the Issue E over the Issue D PCB becomes apparent . The Issue E ... getting rid of the massive Issue E heatsink which covers so ... bad effect on a Speccy 48k Issue 2 screen display . Clearly I ...
