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[[Image:On_File_Main_Menu.jpg|right|thumb|250px|On File (2024) main menu]][[Image:On_File_typical_record.jpg|right|thumb|250px|On File (2024) fuel consumption record]][[Image:On_File_Car_Maintenance_Record.jpg|right|thumb|250px|On File (2024) car maintenance record]][[Image:OnFile_2025_Main_Menu.jpg|right|thumb|250px|On File (2025) main menu (containing 200 records, 1640 registrations)]][[Image:OnFile_2025_CPC6128_Record.jpg|right|thumb|250px|On File (2025) CPC6128 record which also includes field-based graphics]]

'''On File(2024)''' Database Management System was released in June 2024 by [[KSL]] in order to celebrate the anniversaries of CPC (40 years!) and CP/M-80 (50 years!). On File is a business application similar to the MSDOS-era PC applications and one of the most recent projects developed for '''CP/M 2.2'''. As per [[Cosmos]], On File has been developed on the basis of the hardware peripherals as well as the software that were (contemporary) available for the CP/M and the CPC6128. However, it can run on a standard single drive CPC6128. On File database is efficient, quick and reliable and can be used on an everyday basis using the CPC emulators. It uses the entire CPC screen as the platform for the records; thus there is plenty of space to edit user-defined fields. In addition, a wide variety of characters and symbols can be included in the fileds, hence the records can contain data beyond the typical and traditional text type. On File database is fully dynamic, thus the user can modify the master record as well as any record anytime. Furthermore, the database can be either flat or relational. On File (2024) projects developed database has maximum capacity of 200 records (400 KB). The original disk contains the boot sectors for CP/M2.2 (Dobbertin v1.2 for 128 KB RAM), a few demo master records (*.002 files), a few database examples, the application (COM file), as well as the color screen saver (CHN file).

'''On File database is quick and reliable. It uses the entire CPC screen as the platform (2025)''' Database Management System for the records; thus there is plenty of space to store large amount of data'''CP/M plus''' was released in June 2025. In additionto the 2024 version, a wide variety of characters it includes the options to Group and symbols can be included in to Invert the records, hence to Index the database can contain data beyond the typical , to perform Index based search and traditional text typeto perform field based calculations. Setting up a new database using It also supports [[GSX]], '''field-based graphics''', unlimited number of Relational Keys and On Board help. It also includes '''On File is very easy and can be performed in three steps: 1) start the new file system by resetting the database and the master recordRegister''', 2) frame/draw and edit the structure a RAM-disk based register book. The latter provides capacity for a few thousands of the master record, 3) append new single-field records . On File 2025 requires RAM expansion to run and includes a resume option in order to access the database on the basis of the master recordRAM-disk contents upon restart. The database is fully dynamic, thus the user can modify the master record as well as any record anytimeoriginal disk contains CP/M plus boot sectors (Dobbertin v1. Furthermore1x), the a database can be either flat or relational. Children records include the ^ symbol followed by the relational key of old computers and one space, a register book for example ^Z80 . Parent records include the relational key (not the ^ symbol) followed by one space, for example Z80 period 1970-1989. On File database (2024/2025) is disk-based and every record has its own unique filename, thus all the records are stored in the disk driveas stand-alone files. Its capacity is 200 screen records (equal On the other hand, On File Register uses a single file to 400 KB)store the records in the RAM-disk. For large register books which contain more than 64 records, it a 16 KB "cache" memory is thus an ideal application for implemented in order to be able to move back and forth while reading the 20 MB [[Dobbertin Harddisc]] which supports up records. Notice, that in the 2025 version, in order to 512 file maximize the free directory entries as well as [[ROMDOS]] or [[ParaDOS]] 80 track disks. As per [[Cosmos]]and to overcome the Compiler and Editor Overflow, a big part of the On File source code (ONFILE.COM) has been developed on '''encapsulated in the basis source code''' of all the hardware peripherals as well as the software that were Register Book (contemporaryREGISTER.COM) available for the CP/M and is accessed upon user request via boolean expressions that are temporarily stored in the CPC6128. The original RAM-disk contains some demo master records (*.002 files), some demo records as well as the boot sectors for CP/M 2.2 (v1.2).

What gap of the 80'''s does On File Register Book''' (On File extension) which runs using the RAM expansion will be released in summer 2025) come to fill? Let’s give an example. It is RAM-based and single filedUsing On File Register, thus it provides practically endless capacity for 128 byte records. Hence, the user a register book can be set up a Register with, for example, 5000 citizens of ea town.g Earthquakes The register book (date, time, location, magnitude, depth~210 KB) is saved in disk (disk 0) and is loaded once in the RAM of the CPC6128. Then, using On File RegisterDatabase, while keeping detailed a full-screen record can be created for each citizen. The records of the ones that were stronger than 6 Richter using On Filedatabase are saved in 26 different disks (disks A-Z or HD20), depending on the surname of each resident. As per [[Cosmos]]Notice, On File Register has a resume option that the register book remains in order to access RAM until the end of the work regardless of which disk (A-Z/HD20) is used. Upon exit, the contents of the RAM (register book, if modified) are saved in disk 0. This can be achieved with an Amstrad CPC6128 with 512 KB RAM expansion contents anytime and it also supports , a 800 KB external floppy drive, the On File screen saverspecific version of CP/M plus (v1.1x), RamDOS D20 disks or HD20.

 '''Good applications are like good songs, they never dieUsing the following two links you can download On FIle (2024) and On File (2025) respectively.'''