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+ 68k caveat

Thomas Harte 2020-12-24 22:21:55 -04:00
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Roadmap-for-Flexibly-Timed-Platforms.md

@ -127,4 +127,6 @@ Confirmed, then:
* it really makes sense to template on a minimal set of fundamentals — likely addressing mode only (albeit in the slightly broad sense, e.g. to include direction for the 8086); * it really makes sense to template on a minimal set of fundamentals — likely addressing mode only (albeit in the slightly broad sense, e.g. to include direction for the 8086);
* anything that can branchlessly be read from the instruction stream without undue contortion such as the specific registers or constants involved should be read from the instruction stream, not precompiled into overly-specific functions. * anything that can branchlessly be read from the instruction stream without undue contortion such as the specific registers or constants involved should be read from the instruction stream, not precompiled into overly-specific functions.
These were sensible assumptions, but are even more sensible as empiricals. These were sensible assumptions, but are even more sensible as empiricals.
[Caveat: speaking extemporaneously, it's possible that one-function-per-instruction should be tested for a 68k, if memory serves that each instruction is fully identified by the first word]