Re: Designing a protocol for the first time

Keith M wrote:

Snip...

Xmodem is considerably easier to implement than Zmodem. I implemented Xmodem when I was about 10 or 11 years old, first in Basic, and then in C.

Brings back old memories. My first product had X-Modem
download capability and I wrote and debugged it in assembly
language on a Saturday afternoon. It was exquisitely
ugly with software timing loops and no crc, but it
worked for years. I finally got sick of it and completely
rewrote it with crc.
.

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