I have had a box in my parts collection for a few years that contains a variety of interesting vintage components. The most prominent are the Intel 8035L microcontrollers. These microcontrollers are from the
Intel MCS-48 (commonly known as the 8048) line. They have 64 bytes of RAM and access to 4096 bytes of external program memory. Thankfully they are not the one-time-programmable (OTP) variety so I am free to put them up to any task. These processors have a copyright date of 1977 which puts them at roughly twice my age.
There are also a couple of different EPROMS: D27256, with a copyright date of 1984 and D2758 with a copyright date of 1977. Obviously whoever owned these components prior to me was building some interesting embedded systems.
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| Vintage ICs |
They are in relatively good shape. I would say that these are socket pulls. They have some signs of prior use (adhesive on the quartz windows). These may have also been "development" units.
These components coupled with my new
EPROM tools were enough for me to bring this vintage processor online. I managed to get the classic blinking LED working as shown on the top trace of my oscilloscope.
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| Intel 8035L in Action :] |
Continue reading to see how I did it!
