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Spectrum + 48k-Diagnosing a dead keyboard/membraneJust purchased a Spectrum Plus (48k), and the keyboard was faulty (for example, when I pressed the " key, a 'p' was displayed on screen, and lots of …
Just purchased a Spectrum Plus (48k),
and the keyboard was ... " key, a 'p' was displayed on screen, and lots of other ... key displays).
I decided to open it up and re ... membrane, and after turning it on, the keys were different again ... -
Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…
... writes to memory, that write is exposed on the edge connector. How about ... using a spare ordinary 48K ULA to turn the contents of ... its normal screen, or on a 48K you divert writes from ... writes onto an actual second Spectrum through a clever interface? Or ... -
Which ULA to fit in which issue SpectrumI spent a little while studying the resistor changes on page 30 of the ZX Spectrum 48K service manual. They all concern aspects of the video circuit …
... the resistor changes on page 30 of the ZX Spectrum 48K service manual ... production. The quick way to check which version your Issue ... four resistors that change, according to the service manual.
< ... . The older ULA seems to be designed for higher currents ... -
Two disk systems together on one SpectrumHello, does anybody had experience with connection two disk systems together on one Spectrum (48k or 128k) ? e.g. Can a Betadisk operate together …
... two disk systems
together on one Spectrum (48k or 128k) ?
It should be possible to save from one disk-system ... to the other.
I ... -
REX, how to start the game?Hello, I'm trying to play REX, a fantastic platform game I used to play a lot in my Spectrum 48K. After loading the game there is a request "INPUT Y…
Hello, I'm trying to play REX, a fantastic platform ... game I used to play a lot in my Spectrum 48K.
I can't remember how to bypass this... Arghhh... :-x
to start normally from the beginning ... -
Which games perform checksums on the 48K ROM?I've just modified a version of the 48K Spectrum ROM designed for use on the Timex Sinclair 2068, so that a 16 bit checksum of the ROM produces the r…
... version of the 48K Spectrum ROM designed for use on the Timex Sinclair ... same values as the standard 48K ROM.
Does anyone ... on the ROM? I'd like to try the new ROM out on ... -
48K rgb output? Also, OTLA.A couple of weeks ago I scored 2 48K Spectrums on eBay for ?27 with 1 PSU, 1 TV cable and about 10 tapes....score or what!!!! One turned out to be a…
... ago I scored 2 48K Spectrums on eBay for ?27 ... composite mod conversion on the 2 48K Speccys and I ... way to get the 48k to hook up to an RGB input? 48K to ... from the phone to the Spectrum, just to make sure it ... replies, feel free to point out how daft I am ... -
analysing program variable usageIf I wanted to count the number of times each variable is referenced while a program is running (not the number of times each variable is referenced …
... for analysis anyway SFAICS. (The program in question has 1531 statements ... table, but how could I do it on a real Spectrum? Would it ... even be possible to do this on a real Spectrum?
--< ... HL. The problem then is how to distinguish between an error 2 ... -
How many games will I miss out on...Quick question, how many games are there that do not work on the 48k speccy?? I've just gone from a 128k to a 48k due to tape issues but I'm wonderin…
Quick question, how many games are there that do not work on the 48k speccy?? I've just gone from a 128k to a 48k due to tape issues but I'm wondering how many games and/or software im missing out on?? :confused: -
Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…
... at the top to explain how to use it and ... will enable double buffering on a 48k ZX Spectrum
... self.doPrint('\n;Copy line')
self.doPrint(';Copy ... self.doPrint('\n;Copy right line segment')
self ... -
What five games that you've not played/briefly played would you want to take?I was thinking the other day about, how every so often on almost every gaming forum, you see a "What are you top ten favourite games?" style thread. …
... other day about, how every so often on almost every gaming forum ... [B]1. Chaos [/B](ZX Spectrum).
I don't ... Midnight[/B] (ZX Spectrum).
Another Spectrum classic that I' ... game where you write a program to destroy other programs. Are there ... -
48k Spectrum "Jail Bars" Removal?Hi all Just curious I think I saw a post here about the bars that go down the screen on some 48k's I think he referred to them as "jail bars". Any…
... the screen on some 48k's I think he referred to them as ... this and I'm curious how you can remove them or ... ]http://ridgedpixel.co.uk/projects/48k/29.jpg[/IMG] -
I've found my old Spectrum softwareAbout a month ago, I contacted my ex partner and pleaded with her to look in her attic for my old cassettes containing the master copies of all my ol…
... of all my old Spectrum software. We separated about ... 80s.
To my surprise, she responded ... to program. So let's keep expectations low here. There's no Spectrum ... gems. I do however want to put ... get some advice on how to do this, thanks. -
+2a Advice required on how this machine should behave.Hi. As a kid I had a light grey +2, now as an adult I have picked up a +2a.:smile: I've cleaned up the board on the tape drive, and games now load …
... cleaned up the board on the tape drive, and ... now we have a spectrum with working keyboard that ... weekend I went to play a game on it finally.< ... remember being able to choose calculator and 48k on my childhood ... When a game does choose to load, it will freeze ... -
Spectrum preservation/clean up questions.I’m sorting out my 5 Spectrums trying to make them look a bit better, and to package them up how they should be, and to get them to be reliable…
... I would love some advice on how to care for them:
48K & 16K Spectrums, am I able to just ... themselves off a Spectrum+ to pop on a dirty toast ... />
[10] My 48K+ for some reason has a ... ] Is It possible to still buy 48K upgrades for 16K Spectrums ... -
Sound interference and game errorsHi everyone! Here's some "issues" I have spotted. I'm still pretty new to ZX Spectrum computing/gaming...Just so you know. :) I'm using a Commodore…
... 'm still pretty new to ZX Spectrum computing/gaming...Just so you ... D2 monitor for my ZX Spectrum 48K computer.
I have connect ... . How come? Shouldn't the first command line who shows up on the ... you are trying to load 16K games on a 48K computer?
I broke my 48k Speccy!!!!Hey guys, I am looking for some advice, I hope you can point me in the right direction. So, I went about replacing all the capacitors on my issue 4…
... issue on other 48k's.
This particular spectrum was ... am a little unsure how to interpret the numbers at ... This made no change to the voltages or display.< ... C46 are getting warm to the point that something ... lower ram now due to the weird voltages also ...Double keystrokes on zx spectrumHappy New Year everyone. I have this spectrum 48k issue 3b I?ve been working on now and then. I have replaced upper rams, installed a lower ram repla…
... have this spectrum 48k issue 3b I?ve been working on now and ... it twice, making it impossible to operate. Typing for example J ... ]load load[/B] on the screen. Have tried to search the Internet ...Joytsick Interface damaged SpectrumHello All, Sob.. I am a plonker, I did the cardinal sin, I was testing a bunch of joystick interfaces that I got off ebay and one didn't have the ke…
... don't have a working Spectrum 48K+ (6A)!
I ... .
The voltages on the lower RAM are not ... so I'm not sure how to test it. Basically under ... 'm getting 6 and 1193 on the legs (+ in middle) ... 'm getting 778 and 776 on the outer legs (- middle) ...ZX Spectrum+ video ? red on green problemThis is my first post on the forum, so let me introduce myself. I am retired for several years. For 30 years I have been a fan of the ZX Spectrum. I …
... ZX Spectrum. I learned programming on it, which allowed me to change ... sentiment to an old friend ZX Spectrum ordered me to improve it ... points. All voltages are in line with service manual.
... showed, evidence of damage to my ZX Spectrum+ ? Whether it may ...BASIC to Python - bringing a modern view on an 80's obsession...Howdy! I don't know how relevant this will be here, but I've just finished up a 3-part overview on my blog where I convert an old 1K ZX81 basic pr…
... br /> I don't know how relevant this will be here ... on my blog where I convert an old 1K ZX81 basic program ... these posts was to show just how similar the code ... in hundreds of listings) to learn... There's still ... and see how well it holds up on a modern ...New 48K Spectum emulator on the Windows StoreHi, I've just uploaded a new "Free" Spectrum 48K emulator to the Windows Store, see: http://apps.microsoft.com/windows/en-gb/app/specwin48/4d54…
... uploaded a new "Free" Spectrum 48K emulator to the Windows Store, see:
on Windows 8.1 and will look to upload to Windows ... />
It would be great to get some feedback about what ... optional "in app purchase" (looking to CV build rather than any ...Emulator suggestion Betadisk 48k TRDOS v4 adress redirection to Betadisk TRDOS v5Hi, may I suggest the following: As there are some older programs only running on Betadisk 48k with TR-DOS v4 and it´s adresses 15360/15363 ins…
... older programs only running on
Betadisk 48k with TR-DOS v4 ... program calls ROM-Adresses 15360/15363,
this should be redirected to ... 15616/15619.
So BASIC-programs written for Betadisk 48k ...How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…
... new to Z80 and ZX Spectrum. So I was wondering how the ... 128+ models managed to work ... /> I'm somewhat familiar with how bank switching works (I believe ... banks...IIRC). Anyway, any insight on how it was done would be ...12V Rail - Spectrum 48kOkay - I may just be having a senior moment here, but I'm running out of ideas. I'm working on a Spectrum Issue 4S board,and have had to remove al…
... 'm working on a Spectrum Issue 4S board,and have had to remove ... . I really can't see how that can happen, unless I ... 'm missing something. I checked on an issue 2 board here ... got any suggestions for me to try?
Any assistance ...Recreated ZX Spectrum thoughtsI have a recreated ZX Spectrum (and a Vega and a 48K with SMART) and while I know it is not well regarded I actually quite like it. The app is "ok" a…
... a recreated ZX Spectrum (and a Vega and a 48K with SMART ... available for a look at how it works https://github.com ... a platform to run an emulator for Spectrum that works on TV with ... sure if the recreated Spectrum will connect to the ATV4 as a ...program upload via Interface 1 RS232 from PC/Mac/LinuxHello. I've made good on a promise to my 13 year old self and have been recently learning spectrum z80 coding. I can happily build a program (as …
... spectrum z80 coding.
I can happily build a program ... (as e.g. .tap) and load it into a Spectrum ... to the Mic socket on a physical Spectrum 48k and successfully load the program ... br />
a) Spectrum side needs to [b]format "b";baud ...Play it again, Fred!Important! This is NOT my work, not my product! This is an old story from 2004 ... dedicated to uncle Andrew grandpa who died in 2015 (r.i.p.) …
... only on an original ZX Spectrum 48K with a disassembler program ... .
How can we understand it ?< ... and ...
... press ENTER to continue,
... Press 'L ... /> Respect for copyright, thanks to
Fernando Rada ...Spectrum 48k won't start any software but passes all RAM testsI have a rubber key 48k which will not start any software - it appears to work perfectly right up until the end of the tape and the program would sta…
... 48k which will not start any software - it appears to ... the tape and the program would start and then ... hangs and goes back to the copyright screen or ... RAM however on running the soak test on the software ... bit stumped as to where to go next to diagnose this, ...Noob's guide to joysticksWhy on earth would I be asking this *now*, I hear you all scream? The answer... curiosity. Back in the day all I ever had was a +2 and Sinclair's …
... that, ever, and my Spectrum boxes are effectively inaccessible at ...
I knew how the Sinclair joystick worked on the +2 - I ... twenties did I find out how the Kempston joystick interface ... one (and certainly never attempted to program one!) I'd further ...
