jordan@aero.org (Larry M. Jordan) (04/17/91)
Could someone summarize the basic distinction between these two generations? I've not seen these terms used before (I've not much exposure to this news group). Which versions of MIPS OS correspond? --Larry
rogerk@mips.com (Roger B.A. Klorese) (04/17/91)
In article <1991Apr16.173023.7070@aero.org> jordan@aero.org (Larry M. Jordan) writes: >Could someone summarize the basic distinction between these >two generations? I've not seen these terms used before (I've >not much exposure to this news group). Which versions of >MIPS OS correspond? MIPS-I: R2000, R3000, R3000A (modulo the RE, reverse-endian, bit in the Status Register). Documented in the "MIPS RISC Architecture" book currently available. MIPS-II: R6000. Full superset of MIPS-I; adds Load Linked/Store Conditional, Branch (on xxx) Likely, Exception instructions (Trap if xxx), Load/Store Double Coprocessor, Flush, Invalidate, Store to/Load from Cache. These are all 32-bit instructions. It would not take a great leap to interpret the technology announcement for the R4000 to assume that a 64-bit superset is coming. -- ROGER B.A. KLORESE MIPS Computer Systems, Inc. MS 6-05 930 DeGuigne Dr. Sunnyvale, CA 94088 +1 408 524-7421 "10 years of Reagan/Bush have brought us to a new place: postconstitutional America." - Jon Carroll rogerk@mips.COM | {ames,decwrl,pyramid}!mips!rogerk