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The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... of blitter chip to the 128 / +2 and still keep the ... a major rework of the ULA (or would it)? Another option ... been good for the initial 128, as we know Amstrad wouldn ... would have happened to the 128 if it did have these ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... of blitter chip to the 128 / +2 and still keep the ... a major rework of the ULA (or would it)?[/quote]
128, as we know Amstrad wouldn ... would have happened to the 128 if it did have these ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... meant a redesign of the ULA from scratch so it ... twice as many cycles during ULA memory access.
... the features of the 128 as they were and ... real upgrade appearing in the 128 would have injected some ... wasn't much a 128 game could offer besides ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... d do for the first 128. The blitter means an ... twice as many cycles during ULA memory access.[/quote]
... since it requires a faster ULA, RAM and CPU. ... upgrade appearing in the 128 would have injected some ... wasn't much a 128 game could offer besides ... -
The 128 plus 2 wasn't very goodHaving looked at the review in issue 33 of Crash of the Spectrum Plus 2, it strikes me as a bit odd, as if Simon Goodwin had to like it. I remember r…
... since it requires a faster ULA, RAM and CPU. Contention ... silicon generation where a newer ULA with twice density and speed ... from the 48 to the 128 may have accelerated sales, spurred ... 128-specific software development, and may ... -
Spectrum Composite video connections?Is it possible to modify a standard 48K spectrum to give composite video output? In my experience i have found the quality of the picture out of the…
Those fade vertical bars are normal. All my spectrums have them.
Also normal is the slightly moved to the left paper (a known ULA issue, modeulator has nothing to do with it , later fixed on the 128 models). -
Blowtorch method of Speccy repairsI just did my first Spectrum repair (and successful at that). It was the Issue 2 spectrum I wrote about a while ago, I just hadn't got around to doin…
... performs tests on keyboard, sound, ULA, RAM chips, and ROM mostly ... on a multiface (one or 128 ) so you can test Z80 ... ) and when i pressed multiface 128's red button it would ... -
Keyboard Problem?Hey all. I'm Dave I'm in my last year of college before I go to University. I'm in the UK. I got a +2 a while back when I first told my mum and dad…
...
Membranes for the Spectrum+/128 at a realistic price ?10 ...
Z80 processors ?3
ULA chips for the 48K ?5 ... same way as the Spectrum 128, only using switches instead of ... -
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…
This thread is old now, but tell you what, I didn't notice you saying the ULA was an Amstrad chip, the machine being a Sinclair built 128. This isn't right! -
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 ...
