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Thread: Help with Modified Golden Gate 486 SLC

  1. #41
    GurúMeditating trixster's Avatar
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    From the data sheet it would appear that the cpu is tolerant to 5.5v.

    the chap on that thread who seems very knowledgable about these things seems to believe there is no difference between 3.3v and 5v TI486SXLC cpus - they are all 5v but some are part-binned which can operate ok at 3.3
    Last edited by trixster; 15th September 2019 at 12:21.
    A1200 B1260 80Mhz Indi AGA2 Ide-fix Express | A3000 WarpEngine060 CV64 Deneb 486SXLC2 | A500
    A4000 CSMk2 G3 PPC 950Mhz Voodoo3 Indi AGA Deneb | Saturn | PS1&2 | C64 | SNES | Neo Geo | 3DO | Enterprise 128
    A3020 | A3000 | BBC B | Master | Atom | CPC6128 | Jaguar | G5 MOS | Atari Falcon | 2600 | X68000 | PC Engine | CD32

  2. #42
    GurúMeditating trixster's Avatar
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    @blindgerman - you are aware of this cache flushing modification?
    A1200 B1260 80Mhz Indi AGA2 Ide-fix Express | A3000 WarpEngine060 CV64 Deneb 486SXLC2 | A500
    A4000 CSMk2 G3 PPC 950Mhz Voodoo3 Indi AGA Deneb | Saturn | PS1&2 | C64 | SNES | Neo Geo | 3DO | Enterprise 128
    A3020 | A3000 | BBC B | Master | Atom | CPC6128 | Jaguar | G5 MOS | Atari Falcon | 2600 | X68000 | PC Engine | CD32

  3. #43
    A4000Bear's Avatar
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    I must confess I didn't know that those 486SXLC2 chips came in a 3.3V version. I soldered one onto my Bridgeboard over 20 years ago. It's been running on 5V happily since then, and I even overclocked it to 62MHz. I did put a fairly large heatsink with fan on it as it did get quite warm, even at 50MHz.

  4. #44
    GurúMeditating trixster's Avatar
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    Huh, interesting. You just swapped the crystal to overclock it?
    A1200 B1260 80Mhz Indi AGA2 Ide-fix Express | A3000 WarpEngine060 CV64 Deneb 486SXLC2 | A500
    A4000 CSMk2 G3 PPC 950Mhz Voodoo3 Indi AGA Deneb | Saturn | PS1&2 | C64 | SNES | Neo Geo | 3DO | Enterprise 128
    A3020 | A3000 | BBC B | Master | Atom | CPC6128 | Jaguar | G5 MOS | Atari Falcon | 2600 | X68000 | PC Engine | CD32

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