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Fast Path Data Transfer Interface Disclosure Number: IPCOM000061027D
Original Publication Date: 1986-Jun-01
Included in the Prior Art Database: 2005-Mar-09

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Hansen, BW Morse, RK Romon, RF [+details]


A method is provided to improve the data transfer performance between PC (personal computer) applications and twinax-connected host systems. This support is part of the IBM 5250 Enhanced Emulation package. The 5250 Enhanced Emulation installs itself as part of the IBM PC operating system with a twinax connection to an IBM S/36 or S/38. It filters all user input and redirects the PC keystrokes as 5250 scan codes to the host system via the twinax line. The emulated host workstation screen is a buffer maintained in PC RAM (random-access memory). A performance goal of the Fast Path method is to achieve the rate of a PC diskette. The main obstacle to achieving bulk data thruput is the fact that the host system views the twinax-connected PC as a "dumb" terminal.