1994. 4 .1 KIM HYUN SUBJECT: SUN NET MCP OVERVIEW DESCRIPTION : 1. °³¿ä . hardware/software·Î ±¸¼ºµÈ ÁÖº¯ÀåÄ¡ . Sun-3, Sun-4 ½Ã½ºÅÛµéÀÇ Åë½Å±â´ÉÀ» È®Àå½ÃÄÑ ÁÜ . multiprotocolÀÇ Áö¿ø°ú µ¿½Ã¿¡ µ¿±â, ºñµ¿±â Åë½ÅÀ» Áö¿ø 2. ±¸¼º¿ä¼Ò . ÇϳªÀÇ VMEbus board . DMA¸¦ Áö¿øÇÏ´Â µÎ°³ÀÇ RS-232C/RS423 port¿Í µÎ°³ÀÇ RS-449 I/O port . synchronousÅë½ÅÀ» Áö¿øÇϱâ À§ÇÑ driver software (ºñµ¿±â Åë½ÅÀ» Áö¿øÇϱâÀ§ÇÑ software´Â OS¿¡ Æ÷ÇÔ) . A loopback connector 3. MCP°¡ Áö¿øÇÏ´Â »ç¾ç . SunNet X.25 ( line speed´Â 56Kbps±îÁöÀε¥, ÀÌ´Â TymnetÀ̳ª Telnet°ú °°Àº °øÁ߸ÁÀ̳ª, »ç¼³ switching nodeµéÀÇ throughputÀÇ Á¦ÇÑÀÌ´Ù) . SunNet DDN (Depense Data Network) line speed´Â 56Kbps±îÁöÀ̸ç, ÀÌ´Â DDNÀÇ ÃÖ´ë ¼ÓµµÀÌ´Ù. . SunLink BSC RJE . SunNet IR ( point-to-point link¸¦ ÅëÇÏ¿© ÃÖ´ë 500Kbps±îÁö °¡´É) 4. Ư¡ . Serial Åë½ÅÀ» À§ÇÑ 4°³ÀÇ port Á¦°ø - 2°³ÀÇ RS-232C/RS-423 ports ( for synchronous or asynchronous, 38.4Kbps ) - 2°³ÀÇ RS449 ( for synchronous, 500Kbps ) . 32-bit VMEbus interface . µ¿±â, ºñµ¿±â Åë½ÅÀ» À§ÇÑ Buffer - 56K RAM ( for ASYNCH transmit and SYNCH transmit/receive ) - 8K FIFO ( for ASYNCH/BISYNCH receive ) Revision History Created on Apr. 01. 1994