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Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…
... .m1423.l2648]replacement[/url] working Issue 2 motherboard off eBay and will ... -
Strange edition of ZX Spectrum 48K?Hi Everyone! A couple of years ago I bought a ZX Spectrum 48K and there is one very particular thing about it: The lettering "ZX Spectrum" that is s…
My Issue 2 48K had slightly damaged white painted lettering when I bought it two weeks ago but as soon as I gave it a quick clean the paint came off with no sign of it ever being there. -
Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…
You may want to keep ULA chip. Most valuable part of ZX.
It seems your faulty board does not have z80 fix ??? Issue 2 is a bit mystery to me, however. -
Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…
[QUOTE=kpuchatek;603333]You may want to keep ULA chip. Most valuable part of ZX.
It seems your faulty board does not have z80 fix ??? Issue 2 is a bit mystery to me, however.[/QUOTE]
My faulty board has a NEC D780C-1, I believe. -
Colour blocks on displayHi all, I have just acquired another Sinclair product, my first one being a C5, it's a 48K ZX Spectrum. It shows colour blocks on the display when p…
... does not have z80 fix ??? Issue 2 is a bit mystery to ... -
48K Issue 3, noisy display.Has anyone here experienced and been able to resolve a problem that looks like this: [URL="http://drizzle.zigg.net/ZX/ZX106-display.jpg"]Photogra…
Ive encountered this on issue 2 boards, but a quick turn of one of the pots usually resolves it, not on an issue 3 though, no pots! -
48K COMPOSITE VIDEO infosI'm not familiar with the Composite Video, so I'm asking help to WOS. I've got a 48k with Composite Video Mod. I am used to my Toastrack, that I plug…
What version 48k board?
If it's an issue 2 then it sounds like the presets need twiddling a bit. The colours will drift as the speccy warms up etc, it was quite a crude design. -
48K COMPOSITE VIDEO infosI'm not familiar with the Composite Video, so I'm asking help to WOS. I've got a 48k with Composite Video Mod. I am used to my Toastrack, that I plug…
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If it's an issue 2 then it sounds like the ... -
48K COMPOSITE VIDEO infosI'm not familiar with the Composite Video, so I'm asking help to WOS. I've got a 48k with Composite Video Mod. I am used to my Toastrack, that I plug…
Can you see a heat sink through the edge connector slot? If you can, then I don't think it's an issue 2. -
Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …
... problem, this could be an issue with the ULA (or the ... mods... As it's an issue 2, sometimes they came with mods ... ... one of 'em was an Issue 2 which had been factory modded ... ULA in from a different Issue 2.... -
48K COMPOSITE VIDEO infosI'm not familiar with the Composite Video, so I'm asking help to WOS. I've got a 48k with Composite Video Mod. I am used to my Toastrack, that I plug…
... , my bets is its an issue 2 also, there are four pots ... -
Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... :
- a zx spectrum 48k (issue 2)
- a +2A
- a ... +2 (grey)
- 2 +3
- a timex ... -
Reading interface 2 using the IN commandHow do you read using the IN command from BASIC? You can read multiple keys at once, but I cant remember the values...
... you have an issue 3 keyboard (111) or an issue 2 (101). The ... are zeroes.
Interface 2's keys are 67890. The ... ]7 6 5 4 3 2 1 0 -
ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…
... on our (working, issue 2) 48k spectrum until a ... on both the issue 2 and issue 3b spectrums at ...
Right, so, the issue 2 isnt heating up like before ... />
The issue 3b now doesnt buzz when ... research' screen.
2 - after about thirty seconds, ... -
Retro Gamer Issue 100 + Issue 1Okay then so issue 100 is going to be in shops today and it also includes a reprint of the original issue 1 Here's the content Developer Autographs …
... to cancel after subscribing from issue 2!
the move do kangaroo ... -
(grey) +2 ear modI saw some references here and there about grey +2 machines which had an external ear connector built in, so you can use external audio devices for l…
... working on my black +2A (Issue 2 board) which has a different ... -
(grey) +2 ear modI saw some references here and there about grey +2 machines which had an external ear connector built in, so you can use external audio devices for l…
... working on my black +2A (Issue 2 board) which has a different ... on the subject of black +2 versions and you actually have ... -
ZX Spectrum 48k issue 3b power problem?Hi :) I was lucky enough to find a couple of ZX Spectrums at a car boot sale yesterday. I spent the evening fiddling about with one (issue 2) and t…
... the electrolytic capacitors on the issue 3b may be failing and ... neat.
For the issue 2, it sounds like the heatsink ... -
4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
... connected it up to an issue 2 Spectrum. As expected, the Spectrum ... -
4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
... for Spectrums prior to issue 4 that don't ... circuit works perfectly in an issue 4 and above. The ... 't depend on the Spectrum issue number.
[ ... /RAS signal in older issue ZX Spectrums (see below ... I am testing with an issue 2 board that has R57 removed ... -
Magnets and torrents...?In respect of bit torrenting, what are magnet files? How are they different from torrents files, both to the person seeding, and to anyone leeching t…
... need a central authority to issue.
2. They has open nature ... :
1. Slower speed.
2. Less control on speed and ... :
1. Faster connection.
2. Easier to search through the ... may never be finished.
2. Most torrent client do not ... -
Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …
... emulator, ZX-Spin with 48KB issue 2 emulated, and when find the ... this code, to adapt for issue 2 or other
IN A ... C,A ; C = Detect basic issue
C is later ... -
Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …
... , you are on real Spectrum Issue 3.
If output is ... , then you are on Spectrum Issue 2.
[COLOR="Red"]If output ... -
Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …
... ,191,255)
{ real Spectrum Issue 3.
}
ELSE
* { real Spectrum Issue 2.
* }
* ELSE
* { Spectrum ... -
Another BUG play tapes, in ALL EMULATORs when press STOP1 FOR n=1 TO 20 : PRINT IN 254 : NEXT n : PRINT AT 0,0 : GOTO 1 RUN Type this simple code, load a TZX, pres PLAY, when ear input change between 191 …
... ZXSpin in 48K it use Issue 2 by default.
bits ... make a loading scheme
2? Find a limit when i ... tone and sync pulse
2-. Capture between 3 and 7 ... , 8 is for detect a 2 bits errors.
I ... be wrong. (int(n-1)/2))
Up to 1 of ... -
Speccy 48K working only as B&WMy 48K rubber key was working OK after a composite video mod (showing colors). But now it has no colour anymore. It only shows images in B&W. With pr…
... .
Since mine is an Issue 2 board, I also had to ... between Pin 3 and Pin 2 - Vr 2 - should be between -50mV ... -
Improving audio?In working on fixing and updating the hardware in my ZX Spectrum 48k, there is one nagging issue. My issue 2 board has crappy sound through the beepe…
The issue 2 uses the ULA output signal ... rubber key case (for an issue 2 PCB, there's a chance ... -
Release date of ZX modelsWhat is release date of other ZX models ? ?. ?.1980 ZX 80 5. 3.1981 ZX 81 23. 4.1982 ZX Spectrum (rubber speccy) ?. 6.1984 ZX Spectrum + ?.…
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It's a Spanish +2 issue 2, and it's clearly a ... that the +3 and black +2 share the pcb design for ... +3 when only the grey +2 model existed being just a ... a +3 and not a +2 (yet :)), so everything I wrote ...
