Pippin

Pippin 10 hours ago friendica

Sorting out stuff for the tip and I notice a chip that looks like maybe an EEPROM or something inside the old alarm system box. The little blue sticker makes me think it's firmware or similar and the date is the same year the house was built (or at least, sold to its first owner), 1989. (On the other hand, do EEPROMs have that many pins - maybe it's a CPU? I have no idea.) Is this something anyone would be interested in dumping and archiving? I don't have the knowledge, equipment or, frankly, interest, time or energy to get into this myself but if anyone else in the UK is I could post the chip to you.

An open electronic device with a circuit board, transformer, numeric keypad and other stuff on view.

A slightly closer view of a DIP chip with a small blue handwritten sticker on it reading something like: RSSOFI V0-1 27-4-89

Jencen - Please don't call me Derg 10 hours ago • mastodon (AP)

likely some form of ROM if not EEPROM then mask ROM. Is not a UV erasable one anyway.
Theat or as you say processor.

Looks like a burglar alarm panel of some sort?

Pippin 8 hours ago friendica

@Jencen - Please don't call me Derg Yes, it's the alarm system box that used to be mounted under the stairs, it had wires going to PIR sensors, sounders, etc. I ripped it out when I put the hanging rail in. I doubt it has been used in an extremely long time as the 12V lead acid battery inside was down to 0.03V or something like that. Yeah, I tried to peel up the edge of the label to see if there was an erase window but it didn't seem like it.

@Jencen - Please don't call me Derg