My next video about the MPF-IP is online! This time, I am demonstrating the BASIC by computing prime numbers with the sieve of Erastosthenes. Also, I pulled the cassette recorder from the garage, so this is going to be fun too. Next, I am comparing the MPF-IP's BASIC performance with the ZX-81, running the same program. Which machine is going to be faster - ZX81 or MPF-IP?