MODEM PROTOCOL DOCUMENTATION
By Ward Christensen 1/1/82
_____________________________________________...
Many people ask me for documentation on my modem protocol, i.e. the
one used in the various modem programs... vious
requests, I finally decided to put my modem protocol into writing. It
had been previously formally pu...
1. DEFINITIONS
2. TRANSMISSION MEDIUM LEVEL PROTOCOL
3. MESSAGE BLOCK LEVEL PROTOCOL
4. FILE LEVEL
nications software
package and describes the protocol requirements for entering and exiting
GIF mo... e all of the
data has been processed.
B Protocol - A CompuServe-developed error-correcting file transfer protocol
available in the public domain and impl... l
format of this message is:
#version;protocol{;dev, width, height, color-bits, color-res}... <C
(particularly with the introduction of the IIGS), protocols were established to allow more than one file to ... e sent in a single transmission. The first major protocol that was agreed upon among the major online services was the Binary II protocol. Designed in 1986 by Gary Little, this allowed a... nsmitting them between computers. He called this protocol "NuFX" (NuFile eXchange), and implemented it and
Binary ][ protocol
developed by
... a file's *data* in binary form (using
the Xmodem protocol, for example), they don't receive the file's all-... Most Apple II communications programs use special protocols for
transferring file attributes during a binary file transfer, but none
of these protocols have been implemented by hosts. These programs a
bility to slot 7. (AppleTalk was Apple's network protocol that had been designed originally for use with th... sh engineering group was at this time designing a protocol for interfacing standard input devices, such as keyboards, mice, and graphics tablets. This protocol, called the "Apple Desktop Bus", was first implem
or text files! Included is XYZMODEM32, a hot new protocol that
allows bi-directional file transfer and chat... iles, for private
mail-sending. The new transfer protocol is WCXYQMODEM64, which supports
conference and th... l, CP/ M, or DOS 3.3 disks automatically. The new protocol is
YXmodem-7, a software patch allowing 1200 baud
st the end-Users who had invested in
the HST-14.4 protocol that USR had abandoned them in favor of the new
v... e!
US Robotics strikes again with a new HST-14.4 protocol!! Beginning
immediately (product is already in t... modems to be able to
take advantage of all of the protocols out there.... it is as insane as
"standardizatio
commodate the new 800K UniDisk3.5. Using Apple's Protocol Converter scheme (later called "Smartport"), this... recognized by ProDOS and following the Smartport protocol that had been designed for the UniDisk3.5. Apple
eIIe's also had added circuitry to follow the PAL protocol for video output used for televisions and computer monitors in Europe (in the U.S. the NTSC protocol is followed). Because of the extra space needed
Snowterm for VT 100 (although it has no transfer protocol) and AnsiTerm for ANSI; these are shareware and c... s terminal program and ATA on the other. Then use protocol transfer at the highest rate your hardware will a
aDog running. An effort went into documenting the protocol
(Randy Bush did a wonderful job with the FSC001 ... message editor
XMODEM.C XMODEM/TELINK protocol handler
MODEMIO.C (not so) low level I/O
MD
considerations.
o Speed. Zmodem is a streaming protocol. This allows for faster transfers
than Ymodem... Just call and transfer.
o Zmodem is a "batch" protocol. Both drivers support sending and receiving
b