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128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... 40056 8620 Is indeed the ULA chip and it's from ... +2, NOT a toast rack 128 like yours. Betcha that's ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
The ULA chip on that +2 board ... don't know of any ULA chips made by Amstrad and ... fitted to the Sinclair 128. I've never seen one ... at the one in your 128 and see if there is ... of testing an Amstrad ULA inside my own 128, I can't ... an Amstrad chip in your 128. -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... at the one in your 128 and see if there is ... sides of PCB (and especially ULA). Visually it?s in perfect ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... say here is that your 128 isn't working because maybe ... , you've got the wrong ULA in it. I suppose it ... 's possible the two ULA chips are interchangeable but I ... about the white grease since ULA's from the grey +2 ... -
Opus Discovery and +2A?Can anyone tell me if the Opus Discovery is compatible with the +2A. I've just bought a +2A off Ebay and couldn't find any info on compatability. If…
... ] - one of which being the ULA which is selected when A0 ... the remaining 128 possibilities (i.e. A0 high, so the ULA doesn ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... Maybe AMSTRAD has bought Ferranti ULA's and just printed ... here is that your 128 isn't working because ... 's possible the two ULA chips are interchangeable but ... upper side of AMSTRAD ULA looks intact with no ... />
If AMSTARD ULA is dead (and everything else ... -
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
If the ULA is dead (or "wrong"), you ... always tell though since the ULA is responsible for so many ... put a +2 ULA into their toast rack 128 and test the ... have the one toast rack 128 and I use it all ... -
Audio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... capacitors/resistors/diodes from the 128 circuit when they created the ... circuit") as to why the ULA in the Spectrum got destroyed ... ) onto a pin on the ULA that was NOT supposed to ... -
Audio input on a +2would it be possible to connect an external tape recorder to the socket at the back,or would something bad happen?
... does have protection for the ULA since you can plug in ... point was not whether the ULA had protection or not, but ... capacitors/resistors/diodes from the 128 circuit when they created the ... -
DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... will DMA chip know when ULA acesses lower 16K ?[/QUOTE]
ULA stopped clock for CPU.
128+2A/+3
ula generate WAIT for CPU ... . DMA work on any ULA model. You
can change ... -
DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…
... DMA access to contended memory, ULA stopped clock for CPU.
128+2A/+3
ula generate WAIT for CPU ... . DMA work on any ULA model. You
can change ... -
Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... unlikely to be a dead ULA since you got as far ... way to really kill the ULA properly.
But I ... />
(My new toast rack 128 has a row of keys ... - out of the others - the 128 has a row of keys ... -
Dead Spectrum +Hi all, I've recently dug out my old Spectrum + with the idea of repairing it. When I last looked at it, when I was much younger, I was soldering a …
... a 48+ or a 128 toast rack is a pain ... - almost 20 quid for the 128 version is just too much ... when my own toast rack 128 needs a membrane and I ... with things other than the ULA failing. I do agree ... I have never seen the ULA being responsible for keyboard failure ... -
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... that, what should be next? ULA? PCF1306P...?[/QUOTE]
... 48K boards as well as 128 toast rack and grey + ...
ULA - only sure source is a grey +2. A 128 Toast ... think you can test a 128 Toast rack ROM, but ... the +2 ROM. The 128 ROM will work tho.
What's the most probable......cause for this on a grey +2? (z80 is excluded) [url]http://img376.imageshack.us/img376/8087/plus2hk9.jpg[/url]
... many times i reset the 128, those patterns are always present ... did swap the ula from another dead grey 128 but nothing changes ...Dead +2B, help required...It was bought defective on ebay. It came with two faults: a "dead" power supply (it was the fuse) and a faulty main unit. The power supply is now re…
... possible failure before getting the "ULA dead" death sentence.[/QUOTE]
I have a 128+2a with the same number ...Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …
... is stored internally in the ULA ofc and unreadable... but....
128 Spectrums so it knows the ...Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]
... and its got through 2 ULA's but its still working ... retro computers including sinclair spectrum 128(heatsink) and a +2b, acorn ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... put a +2 ULA into their toast rack 128 and test the ... have the one toast rack 128 and I use it all ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... a +2 ULA into their toast
>rack 128 and test ... have the one toast rack 128 and I use it all ... in 1985) has a AMSTRAD ULA. I remember it broke when ... issue 9G) that have this ULA.
You can see ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... the [b]Grey +2[/b] ULA is compatible with the 128k ... the 128k 'test'. With the 128 plugged in and on, hold ...128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... the [b]Grey +2[/b] ULA is compatible with the 128k ... the 128k 'test'. With the 128 plugged in and on, hold ... +2 board: (see the Amstrad ULA chip, same 40056 number)
128k dead, no TV signalI got 128k spectrum (heatsink model) from a friend of mine. He told me that speccy is dead, and he doesn't know what's wrong with it. When I plugged…
... 1985) has a AMSTRAD ULA. I remember it broke ... s nice to see AMSTRAD ULA in 128k speccy :) We ... Sinclair takeover has repainted ULA's with their logo ... 128k 'test'. With the 128 plugged in and on, hold ... 2 board: (see the Amstrad ULA chip, same 40056 number) < ...Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... Chuntey to put under the ULA.
Because of early ... would have had the term 128 bit way before it's ...Why the name "8-bit computer"?The Spectrum was called an 8-bit computer, but what does that mean? For modern hardware and operating systems (32 or 64-bit) it seems to be the poss…
... Chuntey to put under the ULA.
Because of early ... would have had the term 128 bit way before it's ...Spectrum 128 loading volumeToday I recieved my 128k haetsink spectrum, what i noticed is that it needs even higher sound volume for loading through tape than the 48k+. To be mo…
... my 48 and toaster rack 128.
I suspect that ... it even gets to the ULA, so the signal is just ...Does anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
Does anyone have ULA for spectrum 128+ and +2 models?I would really like to buy some of those ferranti chips.Noone seems to have them in stock.
Anyone?
Best regardsDoes anyone have any working Ferranti's?Does anyone know where I might get hold of a Ferranti ULA5C112E-3?? I think this is the problem with one of my rubber key 48K's as it otherwise wor…
... ;201783]Does anyone have ULA for spectrum 128+ and +2 models?I ...Home made SinclairsHi, I mentioned in another thread that I had made a ZX Spectrum out of spare parts. If you'd like to see my efforts, I've set up a simple web page o…
... anything clever like make the ULA circuit out of 74-series ... same. I still have the 128 PCB, probably will never build ...Harlequin ZX Spectrum Clone now 100% compatible!Hi all! The Harlequin ZX Spectrum clone now shows full timing compatibility with the ZX Spectrum! 8-) Both the ULA IO and memory contentions are fa…
... would be to reduce my 'ULA' implementation onto a CPLD. I ... do this, as a pure "ULA Clone" would be useful to ... ...
I'm thinking 128/SE support should follow, and ...
