World of Spectrum
  • Categories
  • Discussions
  • FAQ
  • Sign In
Home › Search
Title Search
@title beer Word 'beer' in title
User Search
  • @user admin Only posts by Admin
Text Search
  • @body beer Word 'beer' in the text
Phrase Search
"Hello World" Exact phrase match
Exclude Terms
  • car -red Search cars that are not red
"Or" Searches
  • honda | bmw 'honda' or 'bmw' results
Multi-Field
@(title,body) hello Both contain 'hello'
WildCard
  • hond* civ* Match all with an astrix
Combination
  • @title bmw @user admin
See more supported syntax examples
Search Again :: Adv Search 1000 results in 0.010s
<1…12131415161718…34>
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... was returning crap to the Z80 were exactly as you describe ... />
    If it was a faulty FDD controller circuit, shouldnt it ...
    The_Bert The_Bert February 2014 Hardware
  • PlusDlite problems with 128K modelsLast year I developed the PlusDlite, and already shipped out a couple of them. Only recently I discovered some problems with 128K models. I remember…

    [QUOTE]Tried another Zilog Z80 (the only other one I ... spectrum crashes and substandard z80's with faulty NMI line on it ... connected?

    By substandard z80 could they really mean NMOS ...
    Basher Basher March 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    ... Z80 CPU are working okay.

    If the ULA is faulty ...
    1024MAK 1024MAK March 2014 Hardware
  • Spectrum Not Responding to Keyboard InputHello, sorry if this thread is not in the correct place, This is my first post and I'm not sure where to post this type of thread. :lol: Anyway, I r…

    So the Z80 CPU and ROM work sometimes ( ... not working, the ULA is faulty (rare) or another device in ... /> Other possible problems are old/faulty solder joints.

    [B ...
    1024MAK 1024MAK March 2014 Hardware
  • Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…

    ... of RAM even with a faulty RAM chip (or less likely ... chip fault).

    The Z80 CPU needs an area in ... to work out what the Z80 CPU is doing (to a ...
    1024MAK 1024MAK April 2014 Hardware
  • Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…

    ... of RAM even with a faulty RAM chip (or less likely ... chip fault).

    The Z80 CPU needs an area in ... to work out what the Z80 CPU is doing (to a ...
    Brian Brian April 2014 Hardware
  • Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…

    ... bus, or there is a faulty RAM. Any of these will ... .

    So, is the Z80 socketed?
    ... If yes, have ...
    1024MAK 1024MAK April 2014 Hardware
  • Fixing my old ZX Spectrum 48K issue 4AHi Guys, I trying to fix my old Spectrum 48K. Looks like my dad used a wrong power supply as the ULA had a bit missing and so did the 7805. So I rep…

    ... bus, or there is a faulty RAM. Any of these will ... .

    So, is the Z80 socketed?
    ... If yes, have ...
    Brian Brian April 2014 Hardware
  • Issue 4S differencesI decided to buy an Issue 4S PCB after reading much about them on here. It was originally in a plus case which didn't come in the sale. I've been run…

    ... Once replaced with a different Z80, the machine started working with ... />
    The details on the faulty Z80 chip:

    Z8400APS
    faulty batch of Z80s coming ... , and perhaps the old Z80 had different power consumption from ...
    rga24 rga24 May 2014 Hardware
  • Issue 4S differencesI decided to buy an Issue 4S PCB after reading much about them on here. It was originally in a plus case which didn't come in the sale. I've been run…

    ... (and it's always a faulty Z80). And if memory serves, I ... M1 line but a NEC Z80. Perhaps a line of speculation ...
    Winston Winston May 2014 Hardware
  • Issue 4S differencesI decided to buy an Issue 4S PCB after reading much about them on here. It was originally in a plus case which didn't come in the sale. I've been run…

    ... board revision exactly. But a faulty batch of Z80s going to ... Korea, that seems possible. The Z80 I just desoldered looks almost ...
    rga24 rga24 May 2014 Hardware
  • Issue 4S bad M1Never ever seen a 4S with a bad M1 line before today [url=http://postimg.org/image/o2yrigdb1/][img]http://s14.postimg.org/o2yrigdb1/IMG_1291.jpg[/img…

    ... same problem with M1. The Z80 looks almost identical to the ... just that, previously machines with faulty M1 lines would have been ...
    rga24 rga24 May 2014 Hardware
  • A tally on the number of successful builds of the Harlequin[SIZE=4][COLOR=Green][U][B]A tally on the number of successful builds of the Harlequin.[/B][/U][/COLOR][/SIZE] Please post your successes below :-) …

    ... to Ingo for identifying a faulty Z80 - odd that, as I was ...
    szeliga szeliga May 2014 Hardware
  • Faulty +2, What could it be?Hi, ZX Spectrum +2, grey model with a barrel connector for power. When powered up the screen has lots of flashing coloured blocks each with some ru…

    Ive just aquired a faulty +2B, horizontal black and white bars with occasional flashing screen corruption but the bars always remain. Z80 and ROMs switched out to no avail

    (Sorry for the thread necromancy!)
    Macc Macc May 2014 Hardware
  • Faulty +2, What could it be?Hi, ZX Spectrum +2, grey model with a barrel connector for power. When powered up the screen has lots of flashing coloured blocks each with some ru…

    ... ;770734]Ive just aquired a faulty +2B, horizontal black and white ... but the bars always remain. Z80 and ROMs switched out to ...
    guesser guesser May 2014 Hardware
  • 48K: Half of copyright message in the middle of the screen?!Issue two. Has 74LS08 over the Z80, but the ULA is 5C112E-3 (I think this should be a 5C102E??? - I have one, but I'm not sure if it is working, at l…

    ... chips, and most likely the Z80 CPU will be one that ... find out which IC is faulty.

    Is there any ...
    georgedb georgedb June 2014 Hardware
  • Issues with 48k spectrum and divIDEI heard you can have all kinds of issues with 48k spectrum and certain DivIDE models. Is this true and if so what should I look out for ? Only aski…

    Well if my issue 2 had a faulty m1 line I have here a NEC D780C Z80 which is fully working.

    Would this work in a 48k as I bought it for a +2 ?
    morcar morcar June 2014 Hardware
  • New user with a dead 48k issue 2Hello all I've found my way here from watching some excellent youtube videos by Joulesper Coulomb in an attempt to fix a issue 2 rubber key 48k I bo…

    ... look like you have some faulty DRAM chips in your machine ... news, it looks like the Z80 CPU and ROM are okay ...
    1024MAK 1024MAK July 2014 Hardware
  • Question for ZX81 GurusI have an ISSUE 1 ZX81 with a 2C184E ULA. If I ever need to change it, can I use one of the newer 2C210E ULAs? If I can, are there any other mods th…

    ... changed the Z80. Using a 210 ULA replaces a faulty 184 leaving ...
    rune rune August 2014 Hardware
  • Hot plugable edge connector?Could the spectrum's edge connector have been made hot plugable without adding much to the manifacturing costs? I was thinking along the lines of a…

    ... tell the repairer that a faulty edge-connector on a joystick ... , but sometimes I think the Z80 or the ULA gets killed ...
    1024MAK 1024MAK September 2014 Hardware
  • 48K Ram Check Command not workingI am trying to repair my Spectrum 48k. It is having issues loading games, sometimes they load all the way to launch and then the speccy resets. Oth…

    ... way to single out any faulty ones?[/QUOTE]

    It ... " RAM, as long as the Z80 CPU, the address, control and ... pins and pick up the faulty chip by doing resistance checks ...
    1024MAK 1024MAK September 2014 Hardware
  • ZX81 and Analogue TVsI recently bought a really nice ZX81 on ebay in amazing condition, but I'm having issues tuning in an old analogue TV to lock onto the signal. I und…

    ... will see various brands of Z80 CPUs for example.

    Z80 CPU and the ROM are ... mask ROMs that had the faulty code. These ZX81s were fitted ... . This board fits on the Z80 CPU and effectively changes one ...
    1024MAK 1024MAK September 2014 Hardware
  • z80 reverse engineeringI came across Ken Shirriff's blog today where he is reverse engineering the Z80 from images of a Z80 die. I guess this may be of interest to those of…

    ... won't boot and the Z80 gets replaced.

    faulty /M1 lines going unnoticed ... in Spectrums being found with faulty /M1 lines. Now ... six months in cloning the Z80, according to the [ ... the Development of the Z80 Microprocessor[/URL] back in ...
    zub zub October 2014 Hardware
  • Non-Ferranti ULA 6C001E-7?Hello! I don't like Iss2 boards that much but after revising one Speccy like that for a friend, the results were so positive that I decided to have …

    ... unknown origin, the others were faulty on arrival.

    [QUOTE ... LRR and URR boards, CMOS Z80, 74HCT logic etc. Should be ...
    balford balford December 2014 Hardware
  • Resurrection of ZX SpectrumHello everyone. I recently emerged from my attic bearing my childrens 128k ZX Spectrum +2 with a bag of games etc. Like many before it hasn't seen…

    ... ROM chip fault or a Z80 CPU fault.

    faulty. But as the Z80 CPU only has ... (s) using the simple Z80 machine code instructions), any ... working machine and the faulty one. If the fault ...
    Next, if the Z80 CPU is socketed, change this ...
    1024MAK 1024MAK January 2015 Sinclair Miscellaneous
  • Who wants to play with my Willy?While cleaning up my PC a few weeks ago, I stumbled across an old Jet Set Willy mod I started back in the early 2000s. Although I don't quite have th…

    ... saving the file as SNA, Z80 or +3DOS in JSWED, saving ... it as Z80 in Spectaculator and then loading ... noticed that the conversion is faulty - judging by the few rooms ...
    jetsetdanny jetsetdanny June 2015 Games
  • Divide by 16 problem...I think.I *think* I have a problem with division. Now, this is not for the Spectrum but it [i]is [/i]for another Z80 platform. I'm converting [b]Speccies …

    ... zeroed or maybe even a faulty Z80 chip that is incorrectly processing ...
    dbolli dbolli July 2015 Development
  • Divide by 16 problem...I think.I *think* I have a problem with division. Now, this is not for the Spectrum but it [i]is [/i]for another Z80 platform. I'm converting [b]Speccies …

    ... />
    It's not a faulty Z80 chip though - the same thing ...
    Sokurah Sokurah July 2015 Development
  • External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…

    ... . So to disable the internal Z80 CPU, connect /BUSREQ on the ... a fatal failure inside a faulty Spectrum.

    I suggest ...
    1024MAK 1024MAK August 2015 Hardware
  • 64k speccydoes anyone have instructions on how to use the extra 16k found in some spectrums?

    Some of the so called faulty sections of the DRAM chips ... "upper" memory are not actually faulty.

    To answer the ... , the hardware only allows the Z80 CPU to access 32k bytes ...
    1024MAK 1024MAK September 2015 Hardware
<1…12131415161718…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
    harriusherbartio on April 21
  • +3 Disk drive motor
    AndyC on April 21

HitBox

Word Docs Hits
z80 13.7K 21.5K
faulty 2.3K 2.8K

Related Threads

  • Faulty M1 pin on a Z80 made from SGS?It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is no…
  • "Decoding z80 Opcodes" (http://www.z80.info/decoding.htm#intro) - Incorrect HALT Opcode?Apologies if this is a dupe but I searched within the forums and couldn't find anything.<br /> <br /> I've been working on a z80 emulator (for acad…
  • Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![quote]Of course, when the M1 line of the Z80 CPU is failing, the Z80 CPU must be replaced![/quote]<br /> Err, why?<br /> <br /> If you are trying…
  • Z80/SNA Compiler under Windows???Does anybody know anything about Z80/SNA compiler under Windows???
  • Z80, TZX and TAP formatsHi again <br /> I?ve seen these three formats as the most common of all. The doubt is... Which is the best of them? What are the differences between …
  • Z80 to DSK?Does anyone know if there is a prog that can convert z80,tzx or tap files to<br /> dsk format? I have access to a friends pc that has a 3 inch drive …
  • Z80/SNA compiler under Windows???Does anybody know anything about Z80/SNA compiler under Windows???
  • Visible-Z80 - VISZ80 - by Miklos PatrubanyHi All !<br /> <br /> Visible-Z80 - VISZ80 - by Miklos Patrubany<br /> <br /> Does anyone have this program ?<br /> Please help me.<br /> <br /> …
  • Converting TAP to Z80Is there an EXE out there that will convert *.TAP into any other snapshot (preverably Z80 or SNA)<br /> <br /> Please Help<br /> <br /> Oatesy
  • Faulty Keyboard membraneHello,<br /> <br /> My keyboard membrane of the 48K doesn'nt work anymore,<br /> Does anybody know how to get a new one ?<br /> <br /> Thanks,<br /> …

Related Searches

  • z80
  • z80 to tape
  • z80 compiler
  • z80 m1
  • psu faulty 5v
  • psu faulty
  • z80 loader
  • z80 emulator
  • z80 pc emulator
  • save z80 listing as gif
  • build your own z80
  • z80 flags
  • z80 test
  • z80 editor
  • replacement z80
  • z80 to tap
  • z80 replacement
  • z80 replace
  • z80 where to buy
  • z80 new

Copyright © 2024 World of Spectrum