• XMODEM is a simple file transfer protocol developed as a quick hack by Ward Christensen for use in his 1977 MODEM.ASM terminal program. It allowed users...
    27 KB (3,889 words) - 19:29, 3 May 2025
  • YMODEM (section XMODEM)
    of the original XMODEM. YMODEM extended XMODEM in three ways, combining features found in other extended XMODEM varieties. Like XMODEM-CRC, YMODEM replaced...
    11 KB (1,609 words) - 19:36, 8 October 2024
  • was not directly based on, nor compatible with, the seminal XMODEM. Many variants of XMODEM had been developed in order to address one or more of its shortcomings...
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  • Thumbnail for Punter (protocol)
    PTP is slower than YMODEM and ZMODEM but faster and more reliable than XMODEM. The earliest version of Punter supports only 7-bit transfers and uses a...
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  • MEGAlink (section XMODEM)
    many protocols of the era, MEGAlink is an expanded version of the seminal XMODEM. While it was a relatively simple and high-performance system, it remains...
    8 KB (1,118 words) - 08:50, 5 November 2024
  • is equal to or better than other protocols such as ZMODEM, YMODEM, and XMODEM, especially on poor connections. On connections over RS-232 Statistical...
    19 KB (2,020 words) - 04:49, 22 May 2025
  • text transfer) XMODEM-Checksum (128 byte block with 8-bit checksum) XMODEM-Relaxed (XMODEM-Checksum with relaxed error timing) XMODEM-CRC (128 byte block...
    7 KB (590 words) - 05:48, 4 May 2025
  • BRM-1K, see BMP-1 variants HH-1K, see Bell UH-1 Iroquois variants XMODEM-1K, a model of XMODEM YMODEM-1K, a model of YMODEM GSXR 1K, or Suzuki GSX-R1000 Typ...
    937 bytes (166 words) - 04:34, 12 August 2023
  • SEAlink is a file transfer protocol that is backward compatible with XMODEM but features a sliding window system for improved throughput. SEAlink was written...
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  • Thumbnail for Ward Christensen
    11, 2024) was an American computer scientist who was the inventor of the XMODEM file transfer protocol and a co-founder of the CBBS bulletin board, the...
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  • BLAST (Blocked Asynchronous Transmission), like XMODEM and Kermit, is a communications protocol designed for file transfer over asynchronous communication...
    11 KB (1,033 words) - 23:59, 22 September 2024
  • Glass (1988) p. 87 Glass (1988) p. 89 Boswell, Peter (2007) [1986]. How XModem, XModem CRC, and WXModem work. Archived from the original on 23 September 2014...
    63 KB (3,211 words) - 11:43, 29 April 2025
  • Thumbnail for HP 48 series
    (Saturn HP 00048-80063 core) Communication protocol(s): Kermit (protocol), Xmodem On-board ROM: 512 KB On-board RAM: 32 KB (48G) or 128 KB (48G+/48GX) Maximum...
    24 KB (1,693 words) - 13:04, 14 April 2025
  • and a pty interface on *nix. File transfer options include the ZMODEM, XMODEM and YMODEM transfer protocols (using parts of SEXYZ.) SyncDraw is an ANSI...
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  • peripheral devices such as USB flash drives Dial-up modems null modem links used XMODEM, YMODEM, ZMODEM and similar File sharing Managed file transfer Peer-to-peer...
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  • Thumbnail for Chuck Forsberg
    file's name, and optionally date and time, since Ward Christensen designed XMODEM to start at block 1, leaving block 0 available. Christensen suggested Forsberg...
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  • Thumbnail for HP 49/50 series
    language(s) RPL User memory 2 MB flash memory and 512 KB RAM Interfaces Ports RS-232 (using the Kermit or XModem protocols, 2x5-pin proprietary connector)...
    34 KB (2,851 words) - 04:07, 24 May 2025
  • protocol developed by Richard Johnson in 1988. It is similar to the seminal XMODEM in most ways, but uses a variable-size packet in order to make better use...
    2 KB (278 words) - 12:48, 26 June 2020
  • compressed file, e.g., a QWK packet, for the user to download using, e.g., Xmodem, Ymodem, Zmodem, and then disconnect. The user reads and replies to the...
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  • character set. Supported file transfer protocols ranged from Kermit and Xmodem to Ymodem (Batch, 4K and G) and Zmodem (Batch Selections). One feature of...
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  • applications 0xA02B 0xD405 0xA80B 0xD015 odd CRC-16-CCITT X.25, V.41, HDLC FCS, XMODEM, Bluetooth, PACTOR, SD, DigRF, many others; known as CRC-CCITT 0x1021 0x8408...
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  • 256 KB RAM, 1 MB flash Communication: USB Mini-B port (using the Kermit or XModem protocols), IrDA (infrared). Power: 3 × AAA as main power, CR2032 for memory...
    10 KB (1,078 words) - 22:53, 20 July 2024
  • Thumbnail for Bulletin board system
    and forwarded to (or polled by) another nearby node or hub via a dialup Xmodem session. Messages would be relayed around various FidoNet hubs until they...
    51 KB (6,607 words) - 14:56, 1 June 2025
  • as a way of improving efficiency compared to non-windowed protocols like XMODEM. See also SEAlink. Conceptually, each portion of the transmission (packets...
    20 KB (2,890 words) - 15:34, 25 March 2025
  • packets, which on a 9600 bit/s link takes about 1⁄20 of a second to send. XMODEM used a slightly larger 128-byte packet, which takes about 1⁄10 of a second...
    6 KB (881 words) - 08:57, 23 June 2023
  • terminator. Some data transfer protocols such as ANPA-1312, Kermit, and XMODEM do make extensive use of SOH, STX, ETX, EOT, ACK, NAK and SYN for purposes...
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  • Display: Minitel, Viewdata, VT100, VT52 File transfer: ASCII, Kermit, XMODEM, YMODEM/YMODEM-G, and ZMODEM List of terminal emulators Official website...
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  • System (CBBS). This used an early file transfer protocol (MODEM, later XMODEM) to send binary files via a hardware modem, accessible by another modem...
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  • were allowed, the original XMODEM checksum, a slightly modified version of the cyclic redundancy check (CRC) used in XMODEM-CRC, or the CCITT CRC-16 or...
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  • supports ASCII, ANSI, and PETSCII output in 40 or 80 columns. Punter and XMODEM protocols are used for file transfers. In version 3.1, full networking support...
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