Browse Prior Art Database

File Loading on MFI Terminal

IP.com Disclosure Number: IPCOM000105867D
Original Publication Date: 1993-Sep-01
Included in the Prior Art Database: 2005-Mar-20
Document File: 2 page(s) / 69K

Publishing Venue

IBM

Related People

Fukushima, H: AUTHOR [+2]

Abstract

This article describes the use of the existing file-loading mechanism which is used in the PC, in order to add the unique expandability or flexibility to the medialess MFI terminals without any additional programming of the controller and host system.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 54% of the total text.

File Loading on MFI Terminal

      This article describes the use of the existing file-loading
mechanism which is used in the PC, in order to add the unique
expandability or flexibility to the medialess MFI terminals without
any additional programming of the controller and host system.

      Most of the MFI terminals have no hard disk or diskette drive.
The expandability/flexibility of such a terminal is much lower than
that of the PC terminals.  "Customization" of the terminal is
currently a well-known term for configuring a terminal to make it
suitable for the system environment.  To support the customization
option on the MFI terminals, the ROM size to offer various options
becomes very big.  In addition, a large part of the ROM code remains
disabled when it is not selected during the customization process.

      To add the programmability and expandability to the medialess
MFI terminals, the existing PC file transfer program is used.

      For example, the FONT design will be described herein-after.
Currently, there is the "Programmable Symbol Set (PSS)" concept
available.  It is an established concept and realized by the 3278,
3279, etc.  One disadvantage of this concept is that additional RAM
area to store the loaded symbol set is required.  Another
disadvantage is the dependency of the application programs.  In other
words, the application programs must be changed whenever PSS is
modified or added.  Figure 1 shows the current configuration,...