Reading ROMs

Eric Smith spacewar at
Thu Sep 3 20:09:40 CDT 2015

On Thu, Sep 3, 2015 at 6:57 PM, Vlad Stamate <vlad.stamate at> wrote:
> I am not sure about the part number it was under the sticker with the
> ROM version (which btw was 09121 15510 REV A) and I put it back into
> the unit.

The PCA silkscreen diagram in the service manual shows F2364, which is
an 8Kx8 masked ROM. The silkscreen shows a 28-pin footprint, but it is
not clear whether the device is a 24-pin or 28-pin chip. If it is a
24-pin chip, it should be possible to read it with an EPROM programmer
configured for the Motorola MCM68764 or MCM68766 EPROMs.  For an EPROM
programmer which does not support the MCM6876x, it's possible to wire
an adapter:

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