|
gptkbp:instance_of
|
gptkb:protocol
|
|
gptkbp:acknowledgment_character
|
ACK
|
|
gptkbp:based_on
|
block-oriented protocol
|
|
gptkbp:character_encoding
|
ASCII
|
|
gptkbp:compatibility
|
widely compatible
|
|
gptkbp:control_characters
|
used for communication
|
|
gptkbp:data_transmission
|
simple
|
|
gptkbp:developed_by
|
gptkb:Ward_Christensen
|
|
gptkbp:end_of_transmission_character
|
EOT
|
|
gptkbp:error_handling
|
gptkb:none
manual intervention required
|
|
gptkbp:file_transfer_initiation
|
requires user intervention
|
|
gptkbp:file_transfer_mode
|
gptkb:text
binary
|
|
gptkbp:first_released
|
gptkb:1977
|
|
https://www.w3.org/2000/01/rdf-schema#label
|
XMODEM
|
|
gptkbp:influenced_by
|
gptkb:Kermit_protocol
ASCII protocol
|
|
gptkbp:initialization_character
|
gptkb:C
|
|
gptkbp:is_often_used_in
|
early personal computers
modems
BBS systems
|
|
gptkbp:legacy
|
still used in some systems
|
|
gptkbp:maximum_block_size
|
128 bytes
|
|
gptkbp:minimum_block_size
|
1 byte
|
|
gptkbp:negative_acknowledgment_character
|
NAK
|
|
gptkbp:notable_features
|
gptkb:historical_significance
low overhead
simple implementation
easy to understand
widely documented
influenced future protocols
pioneered file transfer protocols
used in early networking
|
|
gptkbp:operated_by
|
serial communication
|
|
gptkbp:protocol
|
gptkb:XMODEM_family
asynchronous
|
|
gptkbp:reliability
|
moderate
|
|
gptkbp:security
|
ensured by checksums
|
|
gptkbp:storage
|
up to 128 KB
|
|
gptkbp:success_rate
|
high
|
|
gptkbp:successor
|
gptkb:YMODEM
gptkb:ZMODEM
|
|
gptkbp:supports
|
error detection
|
|
gptkbp:transmission
|
up to 2400 bps
|
|
gptkbp:used_for
|
file transfer
|
|
gptkbp:uses
|
checksum
|
|
gptkbp:bfsParent
|
gptkb:Commodore_64_modem
|
|
gptkbp:bfsLayer
|
6
|