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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…
[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 -
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 ... -
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 ... -
never seen one of these beforenever seen [URL="http://www.ebay.co.uk/itm/Sinclair-ZX-48K-Spectrum-External-Keyboard-/370605608667?pt=UK_VintageComputing_RL&hash=item5649d0cedb"]th…
... . I remember it was an issue 2 16K spectrum and he upgraded ... -
No colour after changing LM1889NI replaced the faulty LM1889N in my issue 2 spectrum, since I had a very yellow picture, and soldered a socket to put the new LM1889N into, however, …
... the faulty LM1889N in my issue 2 spectrum, since I had a ... -
Pixel Nation & Writers wanted!Before I get to my main question I just wanted to talk about a project I've been involved with. I recently worked on a printed magazine for NES-Bit.c…
... able to pen something special. Issue 2 does have a piece on ... -
Intermittent sound cutting outHello, I'm resurrecting an old rubber key spectrum. Originally it had no sound at all, diode D9 was blown, I replaced it with one from my other dead …
... of them (well except issue one) with issue 2 having the lowest sound ... -
Intermittent sound cutting outHello, I'm resurrecting an old rubber key spectrum. Originally it had no sound at all, diode D9 was blown, I replaced it with one from my other dead …
... of them (well except issue one) with issue 2 having the lowest sound ...
