OT - Memory usage in days of yore

Georg Wrede georg at nospam.org
Fri Apr 11 13:44:25 PDT 2008


Steven Schveighoffer wrote:
> So this 8K ROM, 256 bytes of RAM chip is really a modern embedded 
> microprocessor.  It had a built in i2c bus, SPI bus, 2 hardware timers, and 
> 22 GPIOs.  And with 3 of those parts, I had to monitor i2c based sensor 
> devices, run a watchdog, create a dynamically addressed protocol for an 
> external i2c bus, read and write from an external EEPROM, and run a 2x16 LCD 
> front panel with a 4 button interface.  I actually ran out of code space at 
> one point, and had to 'invent' a new way of doing 8-bit pointers in a 16-bit 
> address space in order to reduce the code so it would fit.

Last year I had an excellent list of firms that sold that kind of 
single-board "computers", and I lost it in a disk crash. You wouldn't 
happen to have a few pointers for me?




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