old_timer

old_timer has asked 8 questions and find answers to 463 problems.

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old_timer questions

compute results and mux or not
llvm optimizes with library functions
Preserving sreg in AVR interrupts
ARM prefetch workaround
More detail about new AVR instructions LAC, LAS, LAT and XCH

old_timer answers

How would I write to memory?
Does a one cycle instruction take one cycle, even if RAM is slow?
What is the effect of the assembler directive `.global`
How to NOT use stack with function call in GCC?
Can Libffi be built for Cortex-M3?
Implement bit operations only by ADD, SUB, MUL and DIV instructions
How does a processor fetch cache lines?
Programming esp32 and esp8266
How to send emails with an Arduino without using a computer?
Balanced processor/SOC (?) for small embedded system running linux