Porting

In September of 1979, I bought myself a Commodore PET. I paid $799 for this technological wonder, boasting a 1MHz 6502 CPU, the same as in my KIM-1, 4K of RAM, a tape cassette storage system, a keyboard, and a video monitor. The world was agog at the amount of power Commodore could deliver for so little money. (Corrected for inflation, the money I paid for the PET is now worth about $2000. Think of how much computer you can get for that nowadays.) The keyboard wasn't the real thing; it had tiny flat keys crammed together, and touch-typing was almost impossible. The video monitor wasn't a true bit-mapped monitor; it could display only 24 lines of 32 characters. But it was a huge advance over the single row of six characters on my KIM-1, ...

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