DOS looks trivial to me these days. I kick myself for not going into business making a workalike clone back then.
On a related note, I've kept most of my old machines, except (sadly) my H11. They're just piled up in the basement. Last year I wondered what I had on those old drives, and tried to turn on the computers. None of them would boot. One made a popping sound and smoke came out.
My next attempt was to read the hard drives. My 286 drive wouldn't fit anything modern. The oldest drive I could hook up was in the 486 box, and had to try plugging it into many machines before the old IDE drive was recognized. I was anxious to see what was on it.
Like opening old safes, turns out there was nothing much on it. I was surprised at how simple my old programs were, and how small.
On a related note, I've kept most of my old machines, except (sadly) my H11. They're just piled up in the basement. Last year I wondered what I had on those old drives, and tried to turn on the computers. None of them would boot. One made a popping sound and smoke came out.
My next attempt was to read the hard drives. My 286 drive wouldn't fit anything modern. The oldest drive I could hook up was in the 486 box, and had to try plugging it into many machines before the old IDE drive was recognized. I was anxious to see what was on it.
Like opening old safes, turns out there was nothing much on it. I was surprised at how simple my old programs were, and how small.