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  • Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …

    ... /> [QUOTE=Encarnado;651686]People say Timex of Portugal exported to Argentina ... man who bought inventory when Timex of Portugal shutdown their ... record your research, locate important Timex people, etc. Many of them ... 3 board with 5C112E-2 ULA. SRC 119 burned on ...
    zxbruno zxbruno September 2012 Hardware
  • Spectrum in black TS1500 case with grey "Sinclair ZX Spectrum" labelAt the Spectrum30 event yesterday, someone had brought a Spectrum like object with an unusual case and I never did find out whose it was or where it …

    ... it he still works for Timex.
    [/quote]

    Ah ... machines clearly marked with "Timex Sinclair 2048" and "Timex Sinclair 2068" stickers. The ... and 48k versions, and the Timex PR people didn't seem ... so and one reporter noted Timex still didn't have a ...
    Alcoholics Anonymous Alcoholics Anonymous September 2012 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... for a mode compatible with Timex HiColour mode (one attribute byte ... other signal that prevents the ULA for detecting an I/O ... address multiplexer to let the ULA get all the bits of ...
    mcleod_ideafix mcleod_ideafix November 2012 Hardware
  • New colors / switchable color palette with regular ULA ?Hello. This may be an ignorant question but I just thought about it today and wanted to post it here to get some opinions. OK, so, today, while goin…

    ... bipolar signals), although since the ULA runs on 0V and 5V ... get tiring. I have a Timex Sinclair 2068 set up this ... TTL RGBI outputs from the ULA. These represent a four bit ... , B-Y outputs from the ULA are much less easy to ...
    rga24 rga24 December 2012 Hardware
  • Spectrum CP/MHello.. Just out of curiosity, has anyone actually used +3 CP/M for any practical purpose? I remember booting it up a couple of times years ago, jus…

    ... sad when you realise that Timex had already designed all the ... , a +3 with a TS2068 ULA (ASIC?) would be nice.
    memrah memrah February 2013 Sinclair Miscellaneous
  • Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…

    ... ?

    The separate 'ULA' ROM and 'DOS' ROM images ... but then looking at the 'ULA' ROM, I find that it ... to me that the ULA ROM is exactly what ... A hex dump of the ULA PAL seems to pretty much ... 2022 ef ------> ^D2
    2048 ef ------> ^D2
    2066 ...
    zub zub March 2013 Hardware
  • WIP: ULAPlus hardware implementationThis aims to be an "almost" plug-in replacement for the Sinclair ULA chip fitted in Spectrum 16K/48K/Plus machines. It comes in a form of a small PC…

    ... in theory replace the ULA for the Timex models?

    Indeed ... , if I remember the Timex has some additional memory paging ...
    DavidB DavidB March 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ...
    >>Impossible: the ULA is not reverse engineered like ... it, you completly rule out Timex TC2048 users. That's why ...
    kpuchatek kpuchatek April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ...
    >>Impossible: the ULA is not reverse engineered like ... Miguel (Spectra interface) or Chris (ULA Plus).

    [QUOTE]
    Timex TC2048 users. That's why ...
    bverstee bverstee April 2013 Hardware
  • Timex undocumented video modesHi people. Please check my assumption about the functioning of the Timex in undocumented video modes: D2D1D0 wr #FF 0 0 0 - ZX color mode, the base …

    [QUOTE=Black_Cat;695721]Thank you. What kind of model Timex you tested?[/QUOTE]

    This was on a Timex Computer 2068, but I can try it on a Timex Computer 2048 and a Timex Sinclair 2068 as well.
    rga24 rga24 April 2013 Hardware
  • Timex undocumented video modesHi people. Please check my assumption about the functioning of the Timex in undocumented video modes: D2D1D0 wr #FF 0 0 0 - ZX color mode, the base …

    [QUOTE=rga24;695750]This was on a Timex Computer 2068, but I can try it on a Timex Computer 2048 and a Timex Sinclair 2068 as well.[/QUOTE]

    Yes, try them out please.
    Black_Cat Black_Cat April 2013 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... has to be related to Timex databus, there are no pull ... on data lines driven by ULA, (LS244 is used for Kempston ... check my old docs, but Timex ULA(SCLD) was never well documented ...
    kpuchatek kpuchatek May 2013 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... interface by CPU. In ZX ULA has OC data outputs (as ... stated in ULA book), so it can 'and ... ports will never work on Timex, since IF2 cannot force data ...
    kpuchatek kpuchatek May 2013 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... interface by CPU. In ZX ULA has OC data outputs (as ... stated in ULA book), so it can 'and ... ports will never work on Timex, since IF2 cannot force data ... /> When accessing the internal ports Timex, the buffer 74ls245 will block ...
    Black_Cat Black_Cat May 2013 Hardware
  • Timex 2048 + Interface 2When playing with ZXC3 cartridge (very nice piece of HW from Paul - highly recommended), I connected original Sinclair IF2 to TC2048 and... no joysti…

    ... ]When accessing the internal ports Timex, the buffer 74ls245 will block ... installed between the data bus ULA and data bus ZXBUS. kpuchatek ...
    Black_Cat Black_Cat May 2013 Hardware
  • Oxford Speccy meetup - what date?Hello. It has been brought to my attention that Spectrums, weekends, beer and Oxford have been combined successfully in the past, and it's about time…

    ... interest's sake:

    Timex Sinclair 2068 (modified with switchable ... Timex / Spectrum ROMs and S-video output)
    Timex Computer 2068
    Timex ... Computer 2048
    Microdigital TK90X ...
    rga24 rga24 May 2013 Announcements
  • Oxford Speccy meetup - what date?Hello. It has been brought to my attention that Spectrums, weekends, beer and Oxford have been combined successfully in the past, and it's about time…

    ... interest's sake:

    Timex Sinclair 2068 (modified with switchable ... Timex / Spectrum ROMs and S-video output)
    Timex Computer 2068
    Timex ... Computer 2048
    Microdigital TK90X ...
    p13z p13z May 2013 Announcements
  • Writing to MIC portSo I had a new crazy idea: How about a stereo beeper engine? Since we can set bit 3 on port $fe to output to MIC, writing such an engine should be ra…

    ... only one pin on the ULA, this was not the original ... . The Timex SCLD, which is based on the original ULA plans, has ...
    chev chev August 2013 Development
  • Writing to MIC portSo I had a new crazy idea: How about a stereo beeper engine? Since we can set bit 3 on port $fe to output to MIC, writing such an engine should be ra…

    ... only one pin on the ULA, this was not the original ... . The Timex SCLD, which is based on the original ULA plans, has ...
    utz utz August 2013 Development
  • Barn find #4I think this is some sort of backup device. Its got "007" on the motherboard and the mice have chewed the buttons. Will do a little research later in…

    ... a HN462716 which is a 2048 word x 8 Bit UV ... ) only. For addresses 800 hex (2048 dec) through to 3FFF hex ... floating bus value unless the ULA is accessing the screen at ...
    1024MAK 1024MAK August 2013 Hardware
  • Border art viewerRecently, we were working with diver/4d on border art. The idea was to push the techniques of drawing on the border to the limit and to see, how much…

    ... tests are still not detecting Timex TC2048 (I wonder if anyone ... ]

    Test for the Timex MMU by writing to port ... either a 2068 or a 2048. Then test for the 2068 ... then it's an unmodified 2048.
    chev chev September 2013 Development
  • Border art viewerRecently, we were working with diver/4d on border art. The idea was to push the techniques of drawing on the border to the limit and to see, how much…

    ... 720173]Test for the Timex MMU by writing to port ... either a 2068 or a 2048. Then test for the ... then it's an unmodified 2048.[/QUOTE]
    Thank you ... provides a reliable emulation of Timex clones? If SpecEmu is ... that is different about Timex in terms of the ...
    introspec introspec September 2013 Development
  • CPU upgradethere's an FPGA accelerator for Amiga computers. would there be any benefit in upgrading ZX that way?

    ... contention when the CPU and ULA both want to access the ... other than faster CPU... ULAplus, Timex screen modes (and beyond...) ZXMMC ...
    JeffB JeffB September 2013 Hardware
  • ZX Spectrum clock signals comparedI haven't searched for this on WoS; it might have been posted before. But I think it's important info, and can't do any harm to repeat or show from a…

    ... ;722082]It's not the ULA that's the problem in ... .[/QUOTE]

    Love my Timex machines :D
    Encarnado Encarnado September 2013 Hardware
  • ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…

    ... ]
    [*]Added MLT file format (Timex SCREEN$ with non-alternating attributes ... ..3 switch between the active ULA+ palette (if active), B toggles ... selectors (means transparent).
    [*]The ULA+ and palette options that were ...
    clausjahn clausjahn October 2013 Emulators
  • ZX-Paintbrush 2.3 publishedDear readers, Today, I published version 2.3 of ZX-Paintbrush. Inspirated by kgmcneil, I decided to follow his ideas and implemented a switchable p…

    ... is set to 1 for Timex and 8 for Spectrum.
    ULA+ variations.
    clausjahn clausjahn October 2013 Emulators
  • SE BasicAfter 13 years of development I thought I'd run out of things to optimize, but it turns out I was wrong. However, I'm now running out of time to work…

    ... yet to reverse engineer the ULA, so my next-generation clone ... based on existing hardware?the Timex TC2048. I called it the ... run all existing Spectrum and Timex software. Having sourced the machine ... -in replacement for the original ULA based on it (still in ...
    chev chev October 2013 Sinclair Basic
  • Any HAM8x1 images to share?McLeod_IdeaFix's plug-in ULAplus supports the full ULAplus spec including Timex screens. SpecEmu emulates a machine with 48K timing, ULAplus, and Tim…

    ... ]I was wondering; is the ULA Plus a real device? I ... development. The version without the Timex mode has been incorporated in ...
    chev chev October 2013 Sinclair Miscellaneous
  • Any HAM8x1 images to share?McLeod_IdeaFix's plug-in ULAplus supports the full ULAplus spec including Timex screens. SpecEmu emulates a machine with 48K timing, ULAplus, and Tim…

    ... ULAplus for 48K support also Timex modes ?[/quote]
    Yes. It ... [/youtube]

    [quote]Real Timex would need new SCLD chip ... is just a bug-fixed ULA, built using a different process ... to hook up a ULA to a Timex. Not sure if the ...
    chev chev October 2013 Sinclair Miscellaneous
  • SE Basic IV Buffy v4.1 source (WIP)I've been doing a major refactor on the SE Basic source and I'd appreciate a code review from anyone who has time to look at it. I've almost certainl…

    ... bits
    ld bc, ay_tmxdat ; Timex data port
    jp sound_3 ... ; toggle bit 4
    out (ula), a ; write port
    ld ...
    chev chev October 2013 Development
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