We have had many of you request information about our Terbium microprocessor plans.
We feel that the 65xx brand microprocessor's Instruction Set Architecture (ISA) has never been fully
understood and especially in light of other well know ISA′s. In addition‚ since 1975 the language of
computer architecture has evolved to the point that some of the features of earlier microprocessors
deserve a fresh description with current terminology. That said‚ WDC will reframe the 65xx ISA with
this new terminology add some features and call it the Terbium ISA.
Some questions need answers:
1. Why does WDC feel compelled to name the architecture?
We choose to name this ISA because it is neither a Reduced Instruction
Set Architecture (RISC) nor a Complex Instruction Set Architecture (CISC). Calling it the Terbium ISA just
says we are different. Our opportunity requires that we point out the differences and state the value
proposition. We plan to provide a "white paper" description of the Terbium ISA to begin brand
2. Why use a name like Terbium?
We use Terbium because it is the 65th element in the periodic chart of
elements. Sixtyfive is our favorite number! We plan to keep 65 as part of all our
microprocessor′s number identifiers.
3. What are the goals for the Terbium ISA?
We plan to compete with all 8‚ 16‚
32bit or beyond microprocessors. In addition‚ we plan to promote our licensees as
Terbium Alliance Partners (TAP) in support of a variety of industries. We plan to call on a few of
you to review evaluation kits of our next generation Terbium microprocessors when they are available
later this year.
4. What will be the first use of the Terbium brand name?
We have begun using the Terbium brand name with our ANSI Standard
PlumHall Validated W65C816S C compiler development tool suite Integrated Development Environment
(IDE). Our Terbium IDE (TIDE) interfaces with our existing developer board and can be configured for
our customer′s application boards and licensee′s ASIC microcontrollers/SoC′s.
We hope you not only enjoy seeing our efforts as they come to fruition‚ but also continue to profit from
existing and future Terbium microprocessors!