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128 port hardware patchReading the ULA book has reminded me of something. In The Spectrum Hardware Manual (Adrian Dickens) there is a hardware patch to allow free use of al…
... impedance).
In your diagram you can delete the resistor ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
A valid diagram is a joy forever. Which is quite a long time...... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
[QUOTE=roko;479377]A valid diagram is a joy forever. Which ... -
+2A/+2B/+3/+3B researchdoing my redrawing/correcting of the +3 schematic I'm uncovering lots of oddities in the service manuals. I am trying to work out what really exists…
... found in the "+2B/+3B" diagram of the +3 amendment service ... schematic from the "+2A +3" diagram from the +3 service manual ... -
+2a CompositeWhile faffing around with my +2a I did a down and dirty mod from pin 6 of the tea2000 straight to the modulator output bit like the womble hack for t…
The only reference I have is here > [url]http://www.secarica.ro/html/plus3_hardware.html#compositevideo[/url] (there's a .pdf you can download with the diagram) -
+2a CompositeWhile faffing around with my +2a I did a down and dirty mod from pin 6 of the tea2000 straight to the modulator output bit like the womble hack for t…
My diagram was a simpler solution, based ... -
Route Diagram Search Algorithm?With regard to a diagram of the sort of which the picture below is a simple example. Given that routes are restricted to those going down the screen,…
... ;484478]With regard to a diagram of the sort of which ... -
Challenging Common Knowlege: The +2A/B[I]I was going to write a big long essay about my research on this subject, but being an incredibly lazy person I never really got anywhere with that…
... yet found any official circuit diagram detailing this circuit. It will ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
The schematic diagram [URL="http://alistairsserver.no-ip. ... -
Schematic ErrorThere appears to be an error in the Schematic for the 128k +2A and +3 the error is present in both the redrawn TIF version and the original drawing …
[QUOTE=zxy;489967]The schematic diagram [URL]http://alistairsserver.no-ip. ... -
Simple & Portible means to boost PC Soundcard Line Out?Hi Guys, My older computers were very good at driving a real spectrum's ear socket via their Line Out or Headphone socket. My new Dell's sound card…
... check if my amateur circuit diagram checks out and can give ... -
Simple & Portible means to boost PC Soundcard Line Out?Hi Guys, My older computers were very good at driving a real spectrum's ear socket via their Line Out or Headphone socket. My new Dell's sound card…
... =491600&postcount=9]transistor diagram[/url] must be wrong 'cos ... -
Simple & Portible means to boost PC Soundcard Line Out?Hi Guys, My older computers were very good at driving a real spectrum's ear socket via their Line Out or Headphone socket. My new Dell's sound card…
... =491600&postcount=9"]transistor diagram[/URL] must be wrong 'cos ... -
How to clean up video output to TFT LCD - Spectrum 48kHi, I hope that there is an easy answer to this question. I have modded the RF socket on my 48k Spectrum to output composite video as described in t…
... iron but cannot read the diagram you posted.
I ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... time to draw the schematic diagram for this.
For ... -
What Spectrum to choose?Hi i'm new to the Spectrum. I read 'bout it in CDA (Polish game magazine) and watched LGR review of the 48k and it REALLY interested me. What model m…
... time to draw the schematic diagram for this.
For ... -
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
... I gather as the internal datacorder often leaves a bit to ... -
The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…
just looking at the if2 mod for the +2a/b/+3, any one got a picture of this just to illustrate what the diagram is showing? -
What kind of joystick?Hi, I've just bought ZX Spectrum +2 (grey), my first. Near the joystick socket is caption "USE ONLY SINCLAIR JOYSTICK .....". Socket is standard DB9.…
I can to work with soldering tools. I'm looking for scheme/diagram for SJS-1 interface now. Dear "specmen" - help me, please ! :D -
What kind of joystick?Hi, I've just bought ZX Spectrum +2 (grey), my first. Near the joystick socket is caption "USE ONLY SINCLAIR JOYSTICK .....". Socket is standard DB9.…
... . I'm looking for scheme/diagram for SJS-1 interface now ... -
What kind of joystick?Hi, I've just bought ZX Spectrum +2 (grey), my first. Near the joystick socket is caption "USE ONLY SINCLAIR JOYSTICK .....". Socket is standard DB9.…
... the cassette bit into the datacorder, and it should work. Alternatively ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... stop there? As the +2 Datacorder wasn't really meant for ... -
+2 Grey external tape modIve had a search through previous posts and besides mclouds mod for the +2a I couldnt find anything pertaining to the grey, only reason im posting is…
... of interest did the +2 datacorder have a remote function to ... -
+2 Grey external tape modIve had a search through previous posts and besides mclouds mod for the +2a I couldnt find anything pertaining to the grey, only reason im posting is…
... of interest did the +2 datacorder have a remote function to ... -
Should this be connected?[IMG][URL=http://img528.imageshack.us/i/img7396m.jpg/][IMG]http://img528.imageshack.us/img528/6470/img7396m.th.jpg[/IMG][/URL] Uploaded with [URL=htt…
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... stop there? As the +2 Datacorder wasn't really meant for ...Question about ZX81 componentAfter I cleaned and replaced some components (7805, two electrolytic caps) with fresh ones, and replaced the RF board with a composite one, on an iss…
I think ZX80 diagram might give a few hints. ...+2b faulty keyboardhi. a friend has recently acquired a +2b that was sold as working. when switched on the menu is is displayed fine but none of the keys can be persua…
... can probably look at a diagram and work out which two ...Was there any Spectrum games that ......had a sub-game that you could play while loading the full game. I am sure I remember a pac-man (?) clone in one but I cant remember who made the game…
... -down on the +2A's datacorder lid with my thumbs throughout ...repaired a 48K, yay :)I just managed to repair one 48K. After socketing all eight lower RAM chips (hard work!) and replacing few of them, it showed the familiar "Sinclair …
... 'll also need a circuit diagram. A swift google search will ...