Adafruit will not be shipping USPS orders Monday February 18, 2019 for the federal holiday, Presidents Day.
Expedited USPS orders placed after 11am ET Friday February 15 will go out Tuesday February 19.
First Vial Greater Than Last Vial — Read-Only Archaeology
I’m really enjoying these articles by phooky (Adam Mayer) at NYC Resistor about pulling data from old EPROMs. Aside from the technical information, there’s a cultural aspect too — it gets you thinking about the need for context and the things you commit to digital posterity. He writes:
CHANGING TO ISOCRATIC MODE OF
OPERATION ABORTS GRADIENT AND LEAVES
EVENTS IN THEIR CURRENT STATE
There are incoherent, mumbling ghosts everywhere. A lot of the time they look like this.
These are 80′s-era erasable programmable read-only memories, or EPROMs. They were an immensely popular way to store firmware for embedded systems when the production run size or schedule didn’t make it economical to use less expensive masked ROMs. Then cheap EEPROM hit the market, and EPROMs all but disappeared from devices within half a decade.
TABLE LINE TABLE SAVE HELP
First vial greater than last vial.
End of table.
Table is full.
This is the firmware for an obsolete solvent control system running on a Motorolla 68000 microprocessor, obscurity on obscurity on obscurity. Who’s ever going to need it anyway? Why save the bits?
Gradient and event tables
to be executed simultaneously.
# GIVE ME SOME HELP
Number Out of Range
For the same reasons we record any history: because someday it may prove to be useful, and because someday it may prove to be beautiful.
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