NMODEM
Encyclopedia
NMODEM is a file transfer
protocol developed by L.B. Neal in 1990. NMODEM is essentially a version of XMODEM-CRC using larger 2048 byte blocks, as opposed to XMODEM
's 128 byte blocks. NMODEM was implemented as a separate program, written in Turbo Pascal 5.0 for the "IBM" family of computers. The block size was chosen to match the "natural" block size of a standard PC hard drive sector. This made buffering data for writing simpler.
File transfer
File transfer is a generic term for the act of transmitting files over a computer network or the Internet. There are numerous ways and protocols to transfer files over a network. Computers which provide a file transfer service are often called file servers. Depending on the client's perspective the...
protocol developed by L.B. Neal in 1990. NMODEM is essentially a version of XMODEM-CRC using larger 2048 byte blocks, as opposed to XMODEM
XMODEM
XMODEM is a simple file transfer protocol developed as a quick hack by Ward Christensen for use in his 1977 MODEM.ASM terminal program. XMODEM became extremely popular in the early bulletin board system market, largely because it was so simple to implement...
's 128 byte blocks. NMODEM was implemented as a separate program, written in Turbo Pascal 5.0 for the "IBM" family of computers. The block size was chosen to match the "natural" block size of a standard PC hard drive sector. This made buffering data for writing simpler.