-
What is a Kempston joystick?Just a quick question from an ignorant Commodore user (what, a Commodore user on this sacred ground? Relax, I'm a fan of all 8-bits, including the wo…
... ) as its attached to the ULA.
239 (0x00ef) and ... partially decoded, just like the ULA is on every even port ... -
Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.
Mostly it is the ROM or ULA.
It can happen when you disconnect an interface without disconnecting power first. -
Whats wrong with my spectrum 48 kWhen i startup, instead of copyright messsage i get gray screen with black square in middle.
The ULA is making the picture. I'd suspect the ram is faulty. -
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... to make one without a ULA? Or will you just steal ... spectrum, but I think the ULA does so much for it ... -
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... Spectrum memory layout) and ULA.
ULA will also be provided for ... -
Speccy +2 RGB to S-video?Okay, so I emigrated from dear old Blighty to a land rather less Speccy-friendly, the USA. I've finally managed to get a couple of Speccies over here…
... from the Video Chip and ULA and wire them to some ... chip and Y off the ULA
The only downside ... -
Speccy +2 RGB to S-video?Okay, so I emigrated from dear old Blighty to a land rather less Speccy-friendly, the USA. I've finally managed to get a couple of Speccies over here…
... chip and Y off the ULA[/quote]
This is true ... only for 48K ULA version.
+2 ULA (and +3 gate ... -
My own Home Computer It's true. My company are planning to build a new Home Computer. It will use a Z80 CPU running at 6mhz, 128k Ram and will run all Spectrum and ZX81 …
... /> GPU? Are you using the ULA or not? If you're ... -
Anyone got a copy of 'Z80 for primates'?This Z80 lark isnt easy, in fact it makes me feel very much like Washoe the chimp trying to learn learn sign language, I just dont think I've got the…
... sensible (for contention issues with ULA memory and all that if ... -
ZX Spin 0.4 available for Download.Standard Cut-n-Paste from the CSS post: If all goes well, I'll upload it to WOS on monday. ----------------------------------------- Okay, it's th…
... routine. The reason is the ULA will not be reading the ... possibly be updated before the ULA is reading again and has ... -
ZX Spin 0.4 available for Download.Standard Cut-n-Paste from the CSS post: If all goes well, I'll upload it to WOS on monday. ----------------------------------------- Okay, it's th…
... have to ensure that the ULA doesn't accelerate too - which ... -
Spectrum +3 fault - flashing screen on power onHi ive just bought a +3 When I power it on the power led and disk drive led come on. The screen just flashes black and white around the border, almos…
... likely nothing wrong with the ULA or TV output circuitry in ... -
ObituaryYesterday my spectrum died :( Over 7 years of faithful service its finally gone to Silicon heaven. Rest in peace spectrum 48k+ Born sometime in 198…
... - no picture probably means no ULA function.
I concur ... -
ObituaryYesterday my spectrum died :( Over 7 years of faithful service its finally gone to Silicon heaven. Rest in peace spectrum 48k+ Born sometime in 198…
Still, it *might* be that there's a power failure someplace... who knows, perhaps CPU, ULA, ROM and RAM are ok.
I suggest you don't dispose of it in ANY case, since it might come in handy for spares! -
ObituaryYesterday my spectrum died :( Over 7 years of faithful service its finally gone to Silicon heaven. Rest in peace spectrum 48k+ Born sometime in 198…
... , the top suspect is the ULA - finally cooked :) -
Something i'd like to see in future spectrum emu'sI haven't checked every emu out so i hope this hasn't been implemented somewhere already...one thing i'd like to see is a special enhanced mode where…
... game but the downside is ula sound goes high pitched and ... with more time before the ula is drawing the screen and ... -
ahem!.. could I have a minute of everyones time please :)ok... here's the thing. I'm looking into sourcing some spare IC's for the whole range of Spectrums - mainly memory, as that's probably the weakest l…
... memory ICs, togther with the ULA, are the most common fault ... ' to the occasional game crash. ULA faults again can be a ... renewing the RAM and/or ULA, the chances are that provided ... -
ahem!.. could I have a minute of everyones time please :)ok... here's the thing. I'm looking into sourcing some spare IC's for the whole range of Spectrums - mainly memory, as that's probably the weakest l…
I'd certainly be interested in spare ULAs and loudspeakers, if possible.
(one of my 48ks has a fried ULA)
Cheers,
Jon. -
speccy repairsHi ive just got my old speccy 48k down from the loft , and it loads up ok but i think my tv connection is knackered , anyone know who still repairs s…
ps - regarding TV picture - could be lead, modulator, ULA, or chrominance circuitry (especially if an issue 1 or 2) -
Major +2A problemI've found that my +2A doesn't seem to be working anymore - I just get some black and white horizontal bars on screen, sometimes with some random cha…
Major +2A problemI've found that my +2A doesn't seem to be working anymore - I just get some black and white horizontal bars on screen, sometimes with some random cha…
... the screen the processor and ula and some ram must be ...16k spectrum crash?Hi, I have just been given a spectrum 16k. I plugged it in and it worked, but after turning the machine off and connecting the 32k (cheetah) memory …
... - next most common fault is ULA, followed by CPU, then ROM ...Kempston Interface To Work On 128K +2a ( HELP )Hi need some Advise I'am trying to play games on a 128K +2a Using a (Kempston Interface +3) but it will not work (WHY) , do you need to setup or so…
I thought only the multiface 3 was made for the +2A/+3. I have a Protek switched interface for kempston/cursor/sinclair that works plugged straight on. cursor and sinclair cannot work since the ula overrides.
Fraser.Spectrum modficationsThere is a post about Outrun on the games forum, which makes the fair point that the game is playable when you double the speed on an emulator. Other…
... faster stuff.
the ULA screen update timings would be ...Spectrum modficationsThere is a post about Outrun on the games forum, which makes the fair point that the game is playable when you double the speed on an emulator. Other…
... is maybe also possible... The ula splits up the 14 Mhz ... the 14 Mhz signal before ULA and split it to 14 ... Mhz for ULA and 7 Mhz for CPU ...Fake screenshots? No - now it's REAL screenshotsOk then. A few weeks ago I said I will show You the new gfx-mode of Speccy and - here it is: [url="http://republika.pl/hooy_prg/hprg.zip"]http://rep…
... TAP into RealSpectrumEmulator, and use ULA FX Hardware Multicolour to display ...Keyboard MembraneHi all I'm about to finally replace the dead keyboard membrane in my 48K Speccy. Is there any preventative stuff I can do to improve the life of the…
... very cool - and preserves the ULA as well.Can somebody help me with this?One of my "friends" shoved a piece of metal into the back of my spectrum (48k RAM) and now whenever I try to use it theres nothing but weird lines an…
... ICs I'm afraid - the ULA is generally quite easy to ... /> if you're lucky, the ULA & Z80 will be socketed ... from the iron - if the ULA and Z80 are ok, my ...
