Chris Roberts
Sunrise Electronics
1986 - 1988
Software Engineer
Z80 assembly, Pascal

Sunrise built a variety of EPROM/EEPROM/PAL/GAL/etc. programmers, many of which I fixed bugs in and added features to. At some point we ran out of firmware address space and had to implement a firmware bank select paradigm. Programming chips requires precise timing and developing firmware for this purpose required the use of both an oscilloscope and logic analyzer. This job also required reading schematics to understand the hardware I was programming to.

While I was at Sunrise they developed a new product, for which I did all of the firmware development. This included the user interface (i.e. keypad and small LED display), the programming sections, and the serial transfer section.

Developed DOS based software for controlling and transferring data to/from EPROM programmer, including error correcting serial transfer protocol

This was a GUI (implemented with simple ANSI graphics) based software which allowed the user to transfer data to and from the EPROM programmer and operate it completely remotely. It included an error correcting serial transfer protocol.