May 12, 1985 MBK484-1.ASM is a patch ('insert') file which permits use of MBYE3x with the Kaypro 4'84 internal modem. XMK484-1.ASM is the overlay file for use with XMODEM. These files have been tested with MBYE36 and XMDM106. If you experience any problems, please contact Terry Carroll The Poor Man's RCP/M Bedford, Texas 817-283-9167 24 hours, 300/1200 Baud or voice at 817-540-1794.