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Disciple extensionHello to all! Today I successfully repaired a MGT Disciple belonging to a friend of mine, and in the process I had a chance to study a little this r…
... remarkable device. Reading through the schematic I was surprised to see ... -
+2A/+3 +2B and +3 Schematics (again)Just to announce that I've done a fairly big update/re-organisation of my website, and specifically the [URL="http://alistairsserver.no-ip.org/spectr…
... [/URL], put up a new schematic for the +2B ISSUE2 and ... />
Still no ISSUE 4 schematic I'm afraid, and as ... find any errors in the schematic or the text, let me ... -
RobikHello to all, Is anyone experienced on this russian clone? I have one at hand with corrupted screen (but it boots and replies to keyboard inputs so …
... poor quality scan of the schematic, and thankfully a fairly compete ... -
ZX81 Composite Mod<p>I've done a simple composite mod to my Issue 3 ZX81 following a basic schematic I found on one of the ZX81 forums. Mod consists of a BC547, 1…
... 3 ZX81 following a basic schematic I found on one of ... -
+2 Grey versionsThis thread is an attempt to pin down the various hardware revisions of the +2 Grey. If anybody can provide further images from their machines or fur…
... 32)/ 8642 (1986 week 42): Schematic [url="http://forum.wda-fr ... ?id=2442&mode=view"] Schematic[/url]
Mid (1987? Week ... -
Superfo Harlequin Rev D Documentation wantedI have a Rev D Superfo Harlequin PCB. I would like the documentation (schematic and board layout files), but I get a [b]Not Found[/b] error when I cl…
... . I would like the documentation (schematic and board layout files), but ... -
Issue 1 schematics?I'm fault-finding an issue 1 board. So far I've found a hot memory chip and snipped it's supply legs, then swapped the burnt-out 7805 for a switched…
... if anyone knows of a schematic, that would greatly help. -
I'm new to the site, and I see that 3 of your MIA titles are mine !!!Hi, I’ve just recently joined your website, and I see that 3 programs I wrote back in the mid 80’s are on your MIA list !!! These are Turbo-Baud, Tu…
... Turbo-Baud, Turbo-File, and Specdrum Super Editor.
I ... -
Grey +2 SRAM module - any interest ?In the same vein as Zorn's RAM replacement modules, I designed a board that replaces a bank of 8x4164 RAM IC's as used in the Grey +2 with a modern S…
... .png[/img]
The schematic is [url="http://www.dark ... -
Harlequin turbo mode ( 7 MHz )Hi, All. Sorry for my bad english. I make Harlequin mod - turbo mode ( CPU clock 7MHz ) for Harlequin. Could you be so kind to write your opin…
... write your opinion about this schematic.
I tested on Harlequin ... CPUCLK , but Harlequin has different schematic : CLKB is shifted on 1 ... MHz anytime ?
In my schematic S2 switch between 3.5 ... -
Where could I buy a B1367Y transistor in the UK?I'm after a B1367Y transistor, must be T-220 package type that can be mounted to a heatsink. Anybody know where I can buy them in the UK? Tried Googl…
... be there going by a schematic I found online for this ... -
Simple Joystick TesterSimple Joystick Tester Schematic [img]https://c1.staticflickr.com/9/8876/28251376950_2efa6f7cf6_o.png[/img] [b][i]Mark[/i][/b]
Simple Joystick Tester Schematic
[img]https://c1.staticflickr.com/9/8876/28251376950_2efa6f7cf6_o.png[/img]
[b][i]Mark[/i][/b] -
Spectrum Show 53 LiveNew episode live. Features a review of the Cheetah Specdrum, and the usual game reviews and stuff.
New episode live. Features a review of the Cheetah Specdrum, and the usual game reviews and stuff. -
Spectrum issue 4SI have an almost completely depopulated issue 4s board. Wondering what to do, repairs or spares? I hooked it up and the voltages are off, 5v is fi…
... to find a schematic and layout. The 4ab schematic is similar but ... -
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!
Where do I go to download Board Layout and Schematics these days?- All up to Issue 6a boards.
It's time for some tinkering! -
Spectrum +2 (grey): Mod- and operation- related advices needed.Dear Sirs and Ladies, Please welcome a newbie to the “World of Spectrum” (both to the forum and, well, metaphorically). I’ve recently purchased a…
... I’ve done some soldering (schematic pictures attached):
1. Made ... -upper pin to R4 (on schematic - between R4 and TR2) to ... -
My re-creacton of the Z80 8-bit Universal IDEI looked into my draw with various bits & bobs for PC and I found there a CF-IDE adapter, HDD ribbons and two CF cards. So, I was thinking to myself,…
... based on this well know schematic:
[img]http://www ... .worldofspectrum.org/zxplus3e/images/schematic.gif[/img]
The ... -
TK90X can't read tapesHi there, I was recently gifted a TK90X which seems to be mostly working and has been modded for composite already. Video displays fine and since I…
... Q7 to no change.
Schematic I'm refering to here ... -
Lambda 8300 Color module (ZX81)I was gifted such a device yesterday and have a few questions ... First of all it appears the interface does work in general when used with a 16K …
... .imgur.com/R4GTBwp.jpg
Schematic here: http://forum.tlienhard.com ... -
Looking for advice on building a HarlequinNew member here. From the US. My first computer was a Timex Sinclair 1000 back in the early 80s (in fact, I got one of the first batches sold in th…
... />
Looking at this Harlequin schematic, it just screams out to ... -
Harlequin Rev G AssemblyAre there assembly instructions on the Rev G anywhere? I know there are some component load options wrt PAL vs NTSC on the schematic but I want to m…
... PAL vs NTSC on the schematic but I want to make ... -
New ZEsarUX beta - RC2Hi I have uploaded a new ZEsarUX beta version on the usual url https://sourceforge.net/projects/zesarux/files/Beta_and_Snapshot_versions/ This…
... last beta:
Added Specdrum emulation
Added RZX playback ... -
No CLK on issue 2 ULA pin 32I'm trying to fix an issue 2. The symptoms are as follows:- Black and white bars on screen, colours near impossible to tune in, although these po…
... /> I'm looking at the schematic and starting to suspect the ... -
Replace Issue 2 speakerI was wondering as the speaker in an issue 2 speaker is 200 ohms, would swapping a 40 ohm later spectrum speaker in help with tape loading, less load…
... to match what issue 3 schematic, which should make game volume ... -
New ZEsarUX 5.0Hi! ZEsarUX 5.0 is out! :) You can download it from the URL: https://sourceforge.net/projects/zesarux/ Finally I have succeded emulating Si…
... /> Added Easter Egg ;)
Added Specdrum emulation
Added RZX playback ... -
ZEsarUX beta 5.1Hi I have just uploaded today a new beta version of ZEsarUX. Binaries are for Linux, Mac, Windows and Raspberry (raspbian) You may download i…
... other DAC chips appart from Specdrum: Covox, etc
Added setting ... -
Fuse 1.3.6 releasedA new release of Fuse, the Free Unix Spectrum Emulator, is now available at the SourceForge project: https://sourceforge.net/projects/fuse-emulato…
... in TZX tapes
[*] Save SpecDrum level as unsigned in SZX ... -
Fuse for macOS 1.3.6 ReleasedA new version of Fuse for macOS has been released at the dedicated sourceforge project: https://sourceforge.net/projects/fuse-for-macosx/ Note …
... Baldoví) (Fredrick Meunier).
[*] Save SpecDrum level as unsigned in SZX ... -
Power Play Joystick InterfacePower Play Joystick Interface for the ZX Spectrum. This is a Kempston compatible interface. Address decoding Any IO address where A5 is low... …
... - always 0[/code]
Schematic circuit diagram:
[img]https ... -
ZEsarUX 6.0 stableHi! ZEsarUX 6.0 stable is out! This is a major version, it includes some new machines and a lot of new features and bug fixes :) You can downlo…
... other DAC chips appart from Specdrum: Covox, etc
Added Antonio ...
