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48K Issue 3B ROM to EPROM methodsHi folks, While fixing up a completely dead Commodore PET I needed a way of testing the 4116 RAM chips that make up its 32K, some googling found a…
... a 27c256 EPROM containing the 48K ROM and a diagnostic ... I either got a crashing 48K or crashing diags.
... of original ROM bent out so I didn't ... board and laid the circuit out on a breadboard, soldered ... used and laid THEM out on a different bit ... -
New game: Chrimblast!Submitted to the[url="http://zx-dev-2015.proboards.com/thread/32/new-entry-chrimblast"] ZX-DEV 2015 comp[/url] already, so hopefully Ivan et al are o…
... end but once you sort out your tactics it's pretty ... /> This game automatically plays AY (thanks Yerz!) whether 48k or 128k, so ... 're playing on a normal 48k speccy it's best to ... -
Faster Manic MinerHey, dudes. I've been fiddling around trying to wring more speed out of this game recently. I've replaced the LDIR buffer copying routines with s…
... trying to wring more speed out of this game recently. I ... the game running on a 48k machine goes, without major rewrite ... there's nowhere in a 48k Speccy for it to go ... sure, but would using the AY chip in the 128k be ... -
48k Speccy died, resistors getting too hot to touchHi folks, With 2 days to go till an exhibition my trusty dual-boot 48K issue 3b that I made last year has given up the ghost and I'm not sure I ha…
... exhibition my trusty dual-boot 48K issue 3b that I made ... get instantly hot but tested out of circuit they're fine ... -
Redesigning the ZX Spectrum 128k - A lifelong dreamHello, I am myPinballs (Jim) and i run a small business here in the uk making replacement 8-bit hardware pcbs for arcade pinball games as well as…
... first got a rubber keyed 48k, i always thought one ... as i love the AY-8912 music so much. ... reset button
• AY-8912 sound generator on board ... 80s music
• AY-8912 expansion connector for 3rd ... files
• Sound line out for connection to amps and ... -
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…
I have a rubber key 48k which will not start any ... /SpectrumRepairGuide/#sdocsf which also checked out as it should.
Wanted: Spectrum 48k lower and upper case ( or just dead machine!)Hi all, for a project I'd like to buy a 48k rubber key upper and lower plastic case I don't need the keyboard membrane, keyboard or faceplate, ju…
... 'd like to buy a 48k rubber key upper and lower ... parts so I can build out a justspeccy. I'm in ...Upgrading Harlequin 48K to 128K?I noticed this upgrade PCB on ebay for upgrading the Harlequin to 128K: http://www.ebay.co.uk/itm/ZX-Spectrum-Harlequin-48K-to-128K-Upgrade-Addon-PC…
... .uk/itm/ZX-Spectrum-Harlequin-48K-to-128K-Upgrade-Addon-PCB ... just a RAM upgrade? No AY and I can't see ... of a 128K inside a 48K case.Spectrum 48k Clock SpeedSo I was reading the [url="http://www.worldofspectrum.org/pub/sinclair/technical-docs/ZXSpectrum48K_ServiceManual.pdf"]Spectrum 48k Service Manaul[/u…
... /technical-docs/ZXSpectrum48K_ServiceManual.pdf"]Spectrum 48k Service Manaul[/url] and came ... era that the Spectrum came out (they are of course available ...Harlequin 48k and 128ki am redoing my harlequin 48 parts onto a new harlequin 128k bored only parts i can't swap are the rom, ram and will need an ay chip but seeing as th…
... will need an ay chip but seeing as the 48k version bored ...48K expansion tight? DivMMCHello! I recently got my hands on a ZX Spectrum 48k and decided to pick up a DivMMC Enjoy! (Without the case) It works just fine except for one thi…
... hands on a ZX Spectrum 48k and decided to pick up ... 't get the bloody thing out again. It's pretty much ...Issues with Spectrum 48K on SCART input of LCD displaysHi *! I'm new to the forums, but not new to ZX Spectrum. I have bought a ZX Spectrum 48K in 1983 and own it since. It was stored some 20+ years on…
... bought a ZX Spectrum 48K in 1983 and own ... too dark and frequently getting out of sync.
... darkand the displays frequently get out of sync.
With ... the displays frequently get out of sync and there ... br /> I think I am out of ideas for further trial ...In-game AY music and sound effectsI'm currently working on various aspects of a Spectrum game and thinking now about the sound side of things. I know you can use a utility like Vortex…
... using the beeper via an out(254) routine (taking care not ... it possible to use the AY chip and use just 2 ...Save video directly from ZX 48K hardwareWhat is the best "proven" way (bets quality) to acquire video from a Speccy 48K ? I have converted the the TV out into AV,,with the usual mod (wit…
... Speccy 48K ?
I have converted the the TV out into ... try to get the signal out from it, to see if ...Another 48k Speccy acting as a 16K model.Hi all, I originally was going to post asking for help to fix the new addition to my family a very nice condition Issue 2 sold on ebay as a 16K model…
... up... and oh its a 48k speccy.... Oh well bonus. It ... logic test points in the 48K service manual I came across ... spare 158 I'd swapped out, bent pin 10 into 11 ... thing fires up as a 48k model now ...whooooppiieee....still a ...The "Big Issue" about the ZX 48K rubber key Spectrum . Which Issue is best? There is no easy answer as every 48k rubber keyed Speccy owner will have their own favourite so it will be pretty subjective . But my favourite a…
... no easy answer as every 48k rubber keyed Speccy owner will ... an Issue 6A rubber key 48k . I got it cheaply on ... that time they had sorted out the problems and by then ...How much can you get into 48k?Todays experiment was to see how long, how much text, a PRINT statement will hold. I filled it up with * and counted them and got 689 chrs. Almost 22…
... to find out how much text I can get a 48k Spectrum ...Zx Spectrum 48k vertical black lines on boot problemHi all! I've just bought a Zx Spectrum 48k one eBay: all it was working goof but I made a mistake: I've extracted the Kempston interface before pl…
... just bought a Zx Spectrum 48k one eBay: all it was ... the Kempston interface before plugging out the power. I don't ...Afterburner rom showing sound options in 48K mode?I am running an [i]Afterburner (1988) (Activision)[/i] rom (which I can't remember where I got it from) that shows the music or sound effects choice …
... choice at the beginning in 48K mode, wether on emulator or ... if I connect an external AY-sound interface to the 48K?Technican Ted 48k vs 128K confusionSomething that I could not quite figure out. If you look at The Tipshop (or other places where pokes can be found) they list pokes for the 48K and 12…
... I could not quite figure out. If you look at The ... ) they list pokes for the 48K and 128K version.
48K' page.
The confusion ...ZX Spectrum 48K it only shows colored barsHello, I'm new to the forum and I need help with a ZX Spectrum 48K which I bought recently unfortunately defective. I want to mention that before t…
... help with a ZX Spectrum 48K which I bought recently unfortunately ... someone help me to figure out what would be the problem ...Replacing lower RAM 4116 ZX Spectrum 48k - desoldering advice please?A long post, but interesting pictures perhaps. :) I'd like some advice: (also apologies I think I picked the wrong 'Hardware' category for this, plea…
... gave me a ZX Spectrum 48k in seemingly good physical condition ... I thought I'd get out the unit and see if ... turned-pin as it pops out), so I've got a ... couple of days and figure out what I'm doing wrong ...Fairlight 128K's horrible music (and doing something about it?)Hopefully everyone here is familiar with the quite marvellous theme tune from the 48K version of Fairlight - borrowed from Wizardry on the Bread Bin …
... marvellous theme tune from the 48K version of Fairlight - borrowed from ... [/i] to program an AY version of the 48K Fairlight (or C64 ... I have only just found out (within the last hour) that ... why I like the original 48K tune so much, load up ...Old games with hacked or added AY music for 128k Spectrum?is there a way to find out which old games have had AY music added to them in recent times? Teenage Mutant Hero Turtles would have sounded nice with …
is there a way to find out which old games have had AY music added to them in recent times? Teenage Mutant Hero Turtles would have sounded nice with the original music score on AY.GZX emulator source code publishedHi, GZX is the name of my own personal ZX Spectrum emulator that I wrote and have been using for my needs. I just wanted to let you know that I publ…
... you want to try it out.
Description:
- emulates Spectrum 48k/128k, AY-3-8192
- scanline effects ... /> - Z80, SNA and SNX and AY snapshot formats
- Reads TAP ...Vallation 128K (and finally out on physical tape too).So, I finally finished the 128K version of Vallation. [img]http://tardis.dk/retro/vallation/images/vallation_logo.png[/img] As announced a whil…
... . It was supposed to be out after 3-4 months, but ... version is easier than the 48K version. Well, until you reach ... ]) so the tape has the 48K version on one side and ... your copy[/url].
The 48K version can still be downloaded ...48k packed up after cap changeHi all, I'm relatively new to the Sinclair world, my 8-bit repairs in past was lurking in the dark sides of Acorn, Amstrad and Commodore! I've got…
... 've got 4 48k models, an original case 48k issue 3, and ... ULA from a known good 48k made no difference. I may ... and the 4S should crap out on me after this simple ...48K games with in game bleeper music and sound FX at the same timeJust wondering if any clever programmer even managed to make a 48K game that features in game music and SFX (from just the bleeper - no AY). Was havi…
... even managed to make a 48K game that features in game ... (from just the bleeper - no AY). Was having a conversation about ...Nasty vertical pattern on a 128K Toast Rack via RGBI managed to fix the busted membrane on my [url="https://www.worldofspectrum.org/forums/discussion/55755/got-myself-a-128k-toast-rack-plus-a-simple-a…
... this (the picture is deliberately out of focus to eliminate moir ... (I think). For example, in 48K BASIC, the pattern will change ... via the ULA and the AY, also affects the intensity of ... to IM2 when run in 48K mode also makes the pattern ...I introduce myself and my emulator.Hi! My name is Marta, and I've been a Speccy user for 30+ years now. During the past year I decided to write my own emulator, just to see if I cou…
... anyone wants to check it out: https://github.com/MartianGirl/ ... SCF/CCF flags)
- Accurate 48K/128K/+2A timings.
- ... Issue2/Issue3 keyboard.
- AY-3-8912.
- TZX and ... all the people who got out old Speccies documented.
...
