mirror of
https://github.com/quorten/macsehw.git
synced 2024-09-28 10:55:20 +00:00
.. | ||
README.md |
RTC Apple Custom Silicon
The RTC (Real-Time Clock) chip within the Macintosh SE is an Apple
custom silicon chip that implements the real-time clock and
battery-backed PRAM (Parameter RAM). Fortunately, its simplicity has
yielded a fairly complete replacement chip design that is based around
the pin-compatible ATTiny85 chip running appropriate firmware. See
the firmware
directory for details.
Nevertheless, if we do get a microscopic chip scan of the original silicon, this directory would contain corresponding design files to replicate the original design as-is. Since the chip design is so simple, this might be easily doable with conventional DSLR macro photography after the packaging is opened up.