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Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... 1 over the weekend. Knackered ULA unfortunately, but I repaired the ... too... ( as long as the ULA is good, anyway!).
_________________ ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... , but it could be the ULA or something.
PM ... -
Weird loaders; 1) Why? 2) How? (Curiosity question)Hello again. Sorry to be asking/posting so much today, but I've just arrived here and am plumbing the depths of nearly 22 years of making cups of te…
... higher 32K to avoid the ULA contention issue,which would knacker ... -
Weird loaders; 1) Why? 2) How? (Curiosity question)Hello again. Sorry to be asking/posting so much today, but I've just arrived here and am plumbing the depths of nearly 22 years of making cups of te…
... higher 32K to avoid the ULA contention issue,which would knacker ... -
"Sinclair Zx Spectrum: Absolutely Better Than Commodore 64"Did you ever read this? [url="http://www.alfonsomartone.itb.it/fztsmo.html"]http://www.alfonsomartone.itb.it/fztsmo.html[/url]
... a ZX81 with an improved ULA to provide colour, hardly ingenuious ... -
"Sinclair Zx Spectrum: Absolutely Better Than Commodore 64"Did you ever read this? [url="http://www.alfonsomartone.itb.it/fztsmo.html"]http://www.alfonsomartone.itb.it/fztsmo.html[/url]
... bit of RAM and the ULA. You may not have noticed ... -
"Sinclair Zx Spectrum: Absolutely Better Than Commodore 64"Did you ever read this? [url="http://www.alfonsomartone.itb.it/fztsmo.html"]http://www.alfonsomartone.itb.it/fztsmo.html[/url]
... bit of RAM and the ULA. You may not have noticed ... -
video problem with 128kHi. I bought a 128K (the one with the huge heat sink in the right side) some years ago. Everything seems to work properly except the screen. It doesn…
... TV but I can't. ULA should be working well as ... -
video problem with 128kHi. I bought a 128K (the one with the huge heat sink in the right side) some years ago. Everything seems to work properly except the screen. It doesn…
... scart I got nothing although ULA may be in good condition ... -
Spectrum IDE port addressesWith eight standard IDE ports to address and with the common access to information via the internet I would have thought that Spectrum IDE add-on har…
... 0 blocks activation of 48k ULA (#FE port which is implemented ... -
Spectrum IDE port addressesWith eight standard IDE ports to address and with the common access to information via the internet I would have thought that Spectrum IDE add-on har…
... , in the same way the ULA uses the high byte to ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... commonly), thus preventing the ULA or anything else from producing ... you tried with a different ULA? Remember, don't ... put a good ULA into your dead Speccy ... problems - put your suspect ULA into a good Speccy and ... video source means your ULA isn't working or ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... commonly), thus preventing the ULA or anything else from ... you tried with a different ULA? Remember, don't ... problems - put your suspect ULA into a good Speccy ... />
How do I change ULA on +2a?
... video source means your ULA isn't working or ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... />
How do I change ULA on +2a?
[/quote]
ULA is just a chip on ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... have one. I assume the ULA is just a chip on ... .
[/quote]
The ULA on a +2a, is (going ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
... :25, dasteph wrote:
The ULA on a +2a, is (going ... it [I]is[/I] the ULA before replacing it... and that ... pins on it! If the ULA is dead I suspect you ... hope it's not your ULA!
_________________
Ian ... -
How much power can I pull from a +3?Hi guys (and gals), Does anyone know how much of a load I can draw from the 5 volt line (lower pin 3of the expansion port)? I'm needing between 500…
... less power than other spectrums (ULA!), so there must be quite ... -
Improving RF-modulator outputMy old 48k is working perfectly, except for the RF-modulator output giving unclear colors, moire type effects - generally being a bit bad and driftin…
... varicap's next to the ULA and started
turning them ... -
Improving RF-modulator outputMy old 48k is working perfectly, except for the RF-modulator output giving unclear colors, moire type effects - generally being a bit bad and driftin…
... varicap's next to the ULA and started
turning them ... -
Help! +3 won't work anymore!I've just set up my old +3 and it just won't work - it used to a few months ago but now it won't :( I'm in need of some expert help so here's the pr…
... myself think it is either ULA (you cannot replace easily) or ... -
Help! +3 won't work anymore!I've just set up my old +3 and it just won't work - it used to a few months ago but now it won't :( I'm in need of some expert help so here's the pr…
... the modulator - thing about the ULA is that even when it ... />
If it IS the ULA, you may as well get ... changing/sourcing the surface mount ULA isn't gonna be easy ... -
Help with dead Spectrum +2aHello. My Spectrum +2a died some time ago. It was powered on, I looked away and next time I looked at it, screen was black. I have replaced the 4 r…
it IS possible to replace the ULA chip - I have done it. Broke lots of rules (like using plumbing flux etc) but got it working. -
Help with +3 in comaHi everyone Had a spectrum +3 under the bed for some time and when replacing its drive i accidentally connected the 5v and the gnd of the led. Now…
Don't think ROMs will help, sorry to say but it sounds more like a ULA problem. -
Help with +3 in comaHi everyone Had a spectrum +3 under the bed for some time and when replacing its drive i accidentally connected the 5v and the gnd of the led. Now…
Hi
Tomorrow ill replace the roms and hope it resurects.
In case it is the ula that has blown up, is it easy to find one or compatible one? I could get into desoldering that with time.
Cheers -
Help with +3 in comaHi everyone Had a spectrum +3 under the bed for some time and when replacing its drive i accidentally connected the 5v and the gnd of the led. Now…
... ] more likely to be the ULA, in which case it's ... former more likely to be ULA, yes.
Here's ... -
Help with +3 in comaHi everyone Had a spectrum +3 under the bed for some time and when replacing its drive i accidentally connected the 5v and the gnd of the led. Now…
... hope that its not the ULA that is behind all this ... post about soldering a new ula and i could give it ... my hands on a +3 ula somehow or is there a ... -
Help with +3 in comaHi everyone Had a spectrum +3 under the bed for some time and when replacing its drive i accidentally connected the 5v and the gnd of the led. Now…
... haunt me. Guess its the ula :(
It will be ... or +3 to replace the ula so i guess im giving ... -
ULA schematicsHi everyone. Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lost the files…
... of prototype board that the ULA has similar functionality to. Do ... actual circuits of the final ULA itself exist anywhere? -
ULA schematicsHi everyone. Some while ago I remember getting hold of some circuit schematics of the innards of the Speccy 48K ULA. Sadly I've since lost the files…
Dunno, who d'yer think I am, the great ULA diagram finder????
Ooops, back to sarcastic mode...
Sorry can't help you there.
