Speed ​​test

Hello, All Who knows how to measure the number of clock cycles per INT in ROM. Everything is clear in RAM. LD HL,0 Loop INC HL JP Loop and at interruptions check how much came out.... I didn't find the required sequence in the ROM... Who knows how?????

Hello, Strunov do LDIR and set the stop flag at interrupts (I don’t remember which one) exactly - PO or PE). and after measuring the speed it was time to send it. Typically 21 clock cycles/byte comes out on average. On slow machines 21.5 (this happened to me in real life)