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The table below details the prototyping board and development tools with which the Cygnal (fast 8051 instruction set compatible microcontroller from Silicon Laboratories) tests were performed.
Hardware Setup Prototyping Board C8051F120-TB prototyping board direct from Silicon Laboratories Processor C8051F120 Clock Frequency Internal oscillator and PLL (Phase Locked Loop) configured to provide 98MHz, and measured at 99MHz RAM interface Internal ROM interface Internal Development Tools Setup Compiler SDCC V2.4.0 - Free, open source C compiler Debug information No debug information included in build. Optimization Peep hole optimization was turned off as it caused compilation errors. All other optimization was left at default.
This is the maximum speed for the processor. The cache registers were left in their default state.
SDCC is a capable freeware compiler but probably produces less efficient code than some commercial compilers.
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