I'd like to know more about them too. From what I gather is that they were either a Taiwan company, or Taiwanese but based out of California. They seem to have appeared around 1990 and disappeared around 1993. I've seen their chipsets for 386 and 486 boards, and their chipsets seem to be pretty good (and fast). They were a favourite of DTK for a while, and I often see them on Young Microsystem boards. Symphony was successful enough that they developed their own 387 FPU, but it never came to market. They also developed an EISA chipset, but they were bought out by VIA (probably in 1993), and I am somewhat certain that their EISA chipset was released as a VIA product. I'm not really sure if any of the other symphony technology was used in VIA products though.
"Will the highways on the internets become more few?" -Gee Dubya
V'Ger XT|Upgraded AT|Ultimate 386|Super VL/EISA 486|SMP VL/EISA Pentium