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Real 60Hz NTSC 48K ZX SpectrumNot a 3rd party mod. The joystick mod was added by the user, but the board and the computer is exactly what was sold in Chile, South America. We migh…
... know they have modified the ULA to produce the NTSC/PAL ... like Chris has done X-Ray the ULA and examine in detail ... -
Pera Putnik's RGB interfaceI am sure some (if not many) of you will have seen Pera Putnik's RGB interface [URL="http://members.tripod.com/%7Epiters/uvyrgb.htm"]circuit diagram…
... will get 50Hz from the ULA.
Living in NTSC country ... to a 8" TFT (640 x 480 pixels) and to a ... 17" Sony TFT (1024 x 768 pixels).
The only ... -
Where's the border line between a Spectrum and something else?I mean: there are purists out there that consider that anything that is not a true Sinclair Spectrum, with a true Z80 and a true ULA, and at most, 48…
... .
I wrote a ULA kernel some months ago in ... came Windows and Mac OS X and conspired in dropping spurious ... -
Spectrum dead: 8 vertical bars in alternating colorsI have been soldering on this basterd for a long time now. All IC's now have sockets (except the LM1889). I swapped all 4116's by types that are 100%…
... the schematic says between Pin X of IC A and Pin ... I found something else:
ULA (27) to CPU (5) is ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... a new option in Retro-x or Spin's screen editor ... /> *waiting to see PC-to-ula+ and Amiga-to ... -
More colours II (Was: Most popular new features?)The suggested 4xCLUT multi-colour solution never took off.
... a new option in Retro-x or Spin's screen editor ... , BASin will be getting a ULA+ screen$ editor, which includes an ... -
ZXDS 0.9.0 beta 1Hi! New version of [URL="http://zxds.raxoft.cz"]ZXDS[/URL] is available. Only one important change this time, but the one I have been dreaming about…
... used for the 0.9.x release, but even in that ... others).
As for ULA+, I'll see, I haven ... -
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... ) at a resolution of 1280 x 1024.
It's ... not properly rendered by my ULA GL engine :p
Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... : ALL pixels generated by the ULA will be shown (perfect for ... as well as screen panning x and y functions in this ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... your monitor is deliciously 1024 x 768, no black stripes ... should extend the 256 x 192 area and leave ... should show all 352 x 288 ULA generated pixels, leaving a ... left and right because 352 x 288 is *NOT* ... theoretical 344 x 258 area, ALL 352 x 288 ULA pixels are ...Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…
... mode displays all pixels: 352 x 288, and fits the screen ... aspect ratio. NB that 352 x 288 is no longer 4 ... it fills all your 1024 x 768 monitor without either stretching ... is Eightyone making about the ULA generated video but at first ...Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky
... out recently there exist 16K x 1 DRAM's that are ... : anyone tried 16K x 4 or 64K x 4 DRAMs for this ... be more worried about the ULA, as it gets hot no ...My 1st CPLD project using the Xilinx XC9536Title says it all - for those of you who are considering the use of a CPLD or FPGA (programmable logic) in your electronics ventures, I've documented…
... CPLD - it's the ULA of today, except you ... the CPLD-based ULA replacement - the Spectrum ULA just fits in ... the Spectranet on a 100mm x 60mm PCB. (The relevance ... bounce issues with the ULA replacement too, but it ... wires going to the ULA socket. Xilinx have some ...Do you still have the same speccie as when you were young!If so - how old is it now - and is it still working? And does it have rubber keys!?
... end of the warranty period. :x
Dad sent it ... , it's possible I swapped ULA or circuit board with another ... up - that is: compared to ULA, keyboard foils & faceplates. You ...Measuring the Roger Jowett problemPlease vote if you've received unsolicited mail from Roger Jowett during this year, be it binaries you didn't ask for, or unwanted invitations to soc…
... /> this is not ofcourse speccy (ula+- mb-02+/timex multitech dma ... was hoping to use retro x but this seems to produce ...Measuring the Roger Jowett problemPlease vote if you've received unsolicited mail from Roger Jowett during this year, be it binaries you didn't ask for, or unwanted invitations to soc…
... /> this is not ofcourse speccy (ula+- mb-02+/timex multitech dma ... was hoping to use retro x but this seems to produce ...Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... Issue4 diagram, where without doubt ULA 6C001 or later(!!) is used ... as a patch for the ULA but as a patch for ... Dickens' which show a 5C112E ULA with transistor patch. My conclusion ... everytime I read "connect IC(x) pin(y) to +12V" (instead ...+3 Disk GamesI'm thinking about buying ZX +3. Were there many games released on a disk for +3? I searched ebay, but can find only very few (2). Is there a list…
... compilations anyway, so its not x disks = x games :)
When ... it back and it died (ULA, well the square chip) so ...Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…
... random) call it a ULA in their materials[/QUOTE]
ULA = Uncommited Logic Array = ' ... get X times shorter.
In my experience ULA's ... :-? If you want your ULA's to live as long ... plate on top of the ULA. A simple strip of ...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…
... refresh and certainly no video ula ram contention to contend with ... can help lcd convert retro X for sam coupe atom lite ... for ntsc machines!
pity ula+ not sam compatible and still ...emulatorsplease help can we see clearly which emulator emaulates which hardware is there any that has a pc function key for the mulitface nmi button and the +…
... only 81 had pretty convincing ula interference but now dot ... crawl and ula snow - though these are ... please help
the ula+ is only for the harlequin ... or with the spectrum ula a whole third of ... time because of work, my X girlfriend, a two day ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... about?
Wow the ULA Plus looking amazing and this ... separate RAM banks of 2 x 64K each and so CPU ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... separate RAM banks of 2 x 64K each and so CPU ... !
Just checked out ULA Plus too! Wow if only ...New game! Crimbo!Hi all, we are very proud to announce our new game: Crimbo - A Gloop Troops Tale. [url]http://www.littleshopofpixels.co.uk/games/crimbo/crimbo.zip[/…
... ( and our site ) contains the ULA "snow" effect fix. The fix ... (infinite lives)
61760,X (number of lives)
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... and it's only 100mm x 60mm, and that's ... soldering SMD components (the ULA will have to be ... there will be demand for X units. But you have ... 128Ke specification machine with the ULA+ and Spectranet built in, ... target the machine (the ULA+ is easy to target, ...How the spectrum generates the video from ramHi everyon, I know that most people here allready know this but i think i found out how the spectrum acctually dispalys stuff and why the LD x, (HL)…
The cpu and ula cannot access the display ram ... devices are time sensitive. The ula has to pause the cpu ... as fast and have the ula or display device access the ... its own ram. You write x,y coords to some registers ...Contention: LDI vs LD (ss), rAccording c.s.s. FAQ: instruction LD (ss),r breakdowns as pc:4,[b]ss:3[/b] and LDI as pc:4,pc+1:4,hl:3,[b]de:3,de:1 x 2[/b] can anyone explain why …
... ,[b]de:3,de:1 x 2[/b]
can ... ]
See csmith's ULA book for full details, but ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... what I mean) for the X co-ordinate? The extra pixels ... , as i can assume all X sprite coordinates are even (works ... ...
This means that the ULA just have to...[/QUOTE]
ULA :pCalculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... memory. To achieve it, ULA uses page mode reads. Sure ... />
Taking the ULA apart in this discussion is ... (logic cells) in the ULA" because that is what Altwasser ... bit value can hold both X,Y values. Yes: ... use even coordinates on the X axis, but that would ...Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... memory. To achieve it, ULA uses page mode reads. Sure ... operation" when it makes ULA memory access NON-sequential :)< ... of logic available in the ULA...[/QUOTE]
No, ... bit value can hold both X,Y values. Yes: ... even coordinates on the X axis, but that would ...
