@FiXato My brother got me a mini TV screen which prompted me to dig it up again while I was in Belgium. Philips VG8020, here running the Herbymon machine code monitor displaying boot code, uploaded via PC audio out to cassette port.
The machine code monitor was unobtainium for me when I was a kid. I remember trying to key one in from a magazine which failed. I got into PC before I got to programming the mysterious machine code on the MSX.












