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ULA 6C001EX-7

rga24rga24
edited April 2014 in Hardware
Last night I visited a friend of mine and had a look at the ULAs in his Spectrums. He has a 5C102E 8220 in a 16K issue one, a 5C112E 8237 in a 16K issue two, a 5C112E-2 8248 in another 16K issue two, a 6C001E-6 8407 in a 48K issue one (definitely a replacement ULA, there was evidence of where the dead cockroach had been), and a 6C001E-7 8504 in a 48K issue two in an upgrade Spectrum+ case (this was also a replacement, all the other chips were late 1982).

He also had a ULA I had never seen before, a 6C001EX-7 8432 in an issue 6A board. This has different lettering on the chip than the 6C001E-6 and 6C001E-7, a font I had not seen before on Ferranti ULAs.

What is known about the 6C001EX-7?
Post edited by rga24 on

Comments

  • balfordbalford
    edited April 2014
    Could just be a Saga produced ULA, as these were alternative suppliers of this part for the Issue 6 models.

    B
    The Spectrum Resuscitation Thread - bringing dead Spectrums back to life
    zx-diagnostics - Fixing ZX Spectrums in the 21st Century (wiki)
    Sinclair FAQ Wiki
  • bversteebverstee
    edited April 2014
    balford wrote: »
    Could just be a Saga produced ULA, as these were alternative suppliers of this part for the Issue 6 models.

    B

    That's new: I always thought only Ferranti made the ULA's.
  • zubzub
    edited April 2014
    balford wrote: »
    Could just be a Saga produced ULA, as these were alternative suppliers of this part for the Issue 6 models.

    According to part 6 of Servicing Sinclair Computers, in Television Magazine, different components are required when a Saga ULA is fitted. It might be worth checking the board for these differences. I imagine the reference to 'issue 8' is a typo?
    FUSE: the Free Unix Spectrum Emulator, also for Windows, OS X and more!
    http://fuse-emulator.sourceforge.net/
  • balfordbalford
    edited April 2014
    That's new: I always thought only Ferranti made the ULA's.

    I've never seen one, but I've seen it mentioned on a repair guide hosted on the old Planet Sinclair.

    B
    The Spectrum Resuscitation Thread - bringing dead Spectrums back to life
    zx-diagnostics - Fixing ZX Spectrums in the 21st Century (wiki)
    Sinclair FAQ Wiki
  • rga24rga24
    edited April 2014
    Some pictures of 6C001EX-7.

    10014501_10100848093570850_1471692858_o.jpg

    1669799_10100848093585820_1143713415_o.jpg

    857677_10100848093575840_1791640658_o.jpg

    1926095_10100848093840310_53621349_o.jpg
  • balfordbalford
    edited April 2014
    That rules the Saga theory out, then :D

    B
    The Spectrum Resuscitation Thread - bringing dead Spectrums back to life
    zx-diagnostics - Fixing ZX Spectrums in the 21st Century (wiki)
    Sinclair FAQ Wiki
  • rga24rga24
    edited April 2014
    The original photo files come to about 10MB in total. They have a lot more detail on the ULA. Anyone like to host them?
  • zubzub
    edited April 2014
    Hmm, the 'E' in '6C001E-7' ULA refers to its use of a plastic dual in-line package. Maybe X also relates to the packaging type?
    FUSE: the Free Unix Spectrum Emulator, also for Windows, OS X and more!
    http://fuse-emulator.sourceforge.net/
  • RorschakRorschak
    edited April 2014
    What's the D-Sub9 by the modulator for? Joystick? RGB? Serial communication?
    And is that a big grey wire next to the coil? What's that for?
  • bversteebverstee
    edited April 2014
    Rorschak wrote: »
    What's the D-Sub9 by the modulator for? Joystick? RGB? Serial communication?
    And is that a big grey wire next to the coil? What's that for?
    Seems like a DK'Tronics keyboard with Interface 1 under the ZX Spectrum.
  • runerune
    edited April 2014
    Rorschak wrote: »
    ...And is that a big grey wire next to the coil? What's that for?

    That looks like a white tie wrap?
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