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If you could re-design the Spectrum...Let's suppose you could go back in time to the beginning of the Eighties. The Spectrum is being designed as the revolutionary successor to the alread…
... a 100 percent compatible spectrun 128, with Timex emulated.
[/quote ... 've still got the Timex ULA, with the difference that implies ... -
I think my +2 is dead! HELP!Me and my brother spent about 40 mins trying to get our speccy +2 down from the loft. We plugged it in, and tuned it into my TV. However, we are havi…
... 'm going for a Speccy 128 (the last real Sinclair model ... be better. Some have tape counters (ideal for collections!), and once ... -
Investronica Inves Spectrum +Hi, Has anyone here ever heard of the Investronica Inves Spectrum +? This site [url="http://www.silicium.org/uk/sinclair/inves.htm"]http://www.sili…
... designing and developing the Spectrum 128 to create a super-cheap ... /> - Kempston interface built-in.
- ULA developed by Texas Instruments (not ... -
Investronica Inves Spectrum +Hi, Has anyone here ever heard of the Investronica Inves Spectrum +? This site [url="http://www.silicium.org/uk/sinclair/inves.htm"]http://www.sili…
... of designing the ZX Spectrum 128. They claimed that as they ... developed the 128 hand to hand with Sinclair ... be easily modified. Also, the ULA was vastly enhaced, and developed ... which is divided for the ULA and the CPU.
Necessary +2A ROMsA +3 has 4 roms: Menu/Editor Syntax Checker +3DOS 48k BASIC I understand that a +2A is identical to a +3 but without a disk drive. It also uses …
... is not present in normal 128's (and grey +2). With ... get the dreadfull "rain" (or "ula snow" as some call it ...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 …
... tried changing your Z80 or ULA or anything? Either of those ... know why my Spectrum 128+ has an AMSTRAD ULA...? How long did ... Amstrad make Spectrum 128+s for ...The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …
... to include the Timex SCLD (ULA) in the portable Speccy. This ... left it out of the 128.
[/quote]
I ... on the radar when the 128 came out. A former Timex ... cars and the Z88. The 128 was mainly designed in Spain ...The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …
...
[quote]
The 128 was not developed in Spain ... natural extension to the ULA that can be done ... much hassle. The original ULA fetches two bytes per memory ... that without changing the ULA core much at all ... video from the existing ULA would come up with ...The ULA and ScreenI've asked something similar before but please bear with me. I'm trying to understand the way the screen is controlled. The ULA controls output to …
... natural extension to the ULA that can be done ... much hassle. The original ULA fetches two bytes per memory ... that without changing the ULA core much at all ... video from the existing ULA would come up with ... a missed opportunity for the 128...
So ...Faulty 128Need some help here. I've got a 128+ that won't boot to the menu. It just displays a load of rubbish on the screen. Here's an example of what it does…
You could enter that picture for next years turner prize. With the 25000 quid you could buy a load of 128+'s
Seriously though it looks like bad ram or a fried ula to me.Sound mod for AY audio chipsHi again. This is a repost. I posted it in the misc forum a while back but it definitely should be in here. I was totally pissed off with the crap…
No idead about that, I would guess the 128 & 2 ULA is different from the 48k, though the pinouts might be the same.Sound mod for AY audio chipsHi again. This is a repost. I posted it in the misc forum a while back but it definitely should be in here. I was totally pissed off with the crap…
... has a different ULA, this is only for the 128 and above ...128k Screen Flipping - Sample Code PleaseI know this has been covered before, but I cannot find out code to do the following: On a 128k Spectrum tell the speccy to display from address 4915…
... port.
On the 128 and +2, memory is entirely ... processor shares them with the ULA. This reduces the speed of ... typical bank switch on the 128 is:
LD A,(5B5Ch ...ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…
... (Timex screen modes in the 128's shadow screen area)?[/QUOTE ... screens". You can tell the "ULA" to generate the TV picture ...ZXCF InterfaceI'm just trying to get an idea for the ZXCF interface, and to me, it looks a much cleaner design compared to divIDE (Of course, that's just my opinio…
... b2 b1 xx - Page where ULA fetches
video data from ... terribly difficult to accommodate both 128 and Timex paging -- if it ... 's a 128 register that was written to ... from the page number for 128 banks of 16k (or 8k ...Egghead 4 available to downloadFollowing his adventure in space, Egghead is today Entertaining a guest. Yes, Shelley is coming to tea and it's up to Egghead to get the food on the…
... - and probably original 128 (when loaded in 128 mode with music) you ... get the before mentioned ULA Snow ... fine with music on other 128 spectrums (+2A/+3/Pentagon/etc ... is the +2A with normal 128 ROM in both sockets :)
new spectrumI have notices all sorts of advances on the C64 sceene such as 20mhz cpus, gui`s, and IDE interfaces. are they any kind of advances in development fo…
... options), 27K visable by the ULA instead of the usual 6 ... port, AY sound chip (on 128 and Timex ports).[/quote]
NTSC for Speccy? What would happen?Hi doods. I was just reading a bit there about the TEA2000 video encoder. I'm just talking theory here. What would happen if you... Cut pins 12 an…
... =aowen]... However I believe the ULA in the original Spectrum 48 ... help to 128 owners).[/QUOTE]
Hardly. 48K ULA performs PAL ...+3 soundhello there, just a quick-fire question today. i'm kinda keen on the idea of using my +3 quite a bit, particularly if i bother to to actually sort …
... />
I would leave the ULA connection for the moment. Its ... 28 is for the Speccy 128 (please let me know if ... one of the docs). The ULA connection on the +3 is ...The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... Model, and it then says 128 is 48k+ in the status ... . This is regardless of whether ULA snow effect is enabled or ...The New SPIN releases ThreadOk, as I'm now working on SPIN again full-time, and as a very wise man once said, "Release Early, Release Often"[1]... I'm going to release new SPIN…
... Model, and it then says 128 is 48k+ in the status ... . This is regardless of whether ULA snow effect is enabled or ...Questions from the new owner of a grey Spectrum +2I managed to pick up a grey Spectrum +2 off of ebay with cheap shipping (I'm in the US... it was $13 total and it has a Donkey Kong tape inside) and …
... grey +2 is basically a 128 with a cassette deck (and ... bank switching that the newer ULA provides.
Is there ... or you can fry the ULA.[/QUOTE]
Yeah, I read ...Questions from the new owner of a grey Spectrum +2I managed to pick up a grey Spectrum +2 off of ebay with cheap shipping (I'm in the US... it was $13 total and it has a Donkey Kong tape inside) and …
... bank switching that the newer ULA provides.[/QUOTE]
Jarek ... snag is that on the 128/+2, the +3 paging port ...Pixel Explosion CodeJust a little snippet to cause explosive effects. It uses table lookups for the screen address, and can handle up to 32 pixel particles. A particle…
... is to change how your counters work:
[code]
128, x coord went off screen ...You know how the 128K was faster than the 48K Spectrum?Regarding how the Spectrum 128K ran at 3.54 MHz rather than the 48K's 3.5MHz, was this difference enough to be an advantage? If not, then surely Sinc…
... /> Did not know the 128 divide ULA's clock down five times ...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…
Only place for a spare ULA is another broken Spectrum.
< ... /> It is unlikely that the ULA is killing the video so ... chip is used inside the 128 - it is in the +2 ... 're gonna be sending that 128 to either Spirantho or me ...Sinclair Basic Vs PascalWith the rise of the structured programming movement (Jackson et al) was it wise to put the Basic programming language into the Spectrum. By this ti…
... your dishwasher? The supermarket bar-counters? Lots of other appliances?Is ... . I did put heatsink on ULA chip, because I want it ...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…
... a major redesign of the ULA and without some extra CPU ... new graphics... since the Timex ULA with the extra graphics was ... time to do a new ULA. There's no way they ... /> Given the difference between the 128 and +2 board I'd ...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…
... br />
[quote]
The 128 should have included a microdrive ... done anything with since the 128 presented an opportunity to ... have done for the first 128 model:
* Video ... trivial modifications to the existing ULA.
* Two atari ...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…
... done anything with since the 128 presented an opportunity to ... have done for the first 128 model:
* Video ... trivial modifications to the existing ULA.
[/quote]
We ... including the interface with the 128 would have established the drive ...
