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Comment: Used section to divide the Z88 UV Eprom eraser photo from the text

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About Flashstore

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about flashstoreImage Added

This

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new application

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is part of the OZ 4.5

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Operating System.

Introduction

 

The Z88 when it was introduced had two ways of saving files.

  1. RAM pack
  2. EPROM card.

The RAM pack is good. It is convenient and quick to use. The downside of it is that if the Z88 goes wrong or the batteries go flat, the files saved there will have gone. EPROM packs are really useful. They can store the files, which remain there even when the RAM has lost them. The disadvantage was that to erase the files, they needed to be exposed to UV light. This meant that 20 minutes, a mains supply and an EPROM Eraser was required.

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When the Flash chip appeared it could save files like the EPROM but it had these advantages.

FAST ERASING - takes less than ten seconds to erase 1024K bytes.
FAST SAVING - takes three seconds to save a 20K file.
LOW POWER - uses a 1/10 of the power used by a standard EPROM.

This meant that the erasing could be done whist the chip was in the Z88. For the Z88 to use it, an additional application needed to be written. Flashstore is the result.

Z88 UV Eprom Card EraserImage Added

 

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Running the Application

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Select FlashstoreImage Added

To start the application either move the cursor down to the FlashStore (the application name in the command window in the Index) or start it with Image ModifiedJ

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Cursor Movements

Flashstore supports all the cursor movement commands. These are useful when moving up and down in the FILE AREA or for moving the cursor to the beginning or end of line before editing.

Image Modified Image ModifiedBeginning of lineImage Modified Image ModifiedTop of the list  
Image ModifiedImage ModifiedBack a wordImage ModifiedImage ModifiedUp a screen  
Image ModifiedBack a characterImage ModifiedUp a line  
  Image ModifiedDown a lineImage ModifiedForward a character
  Image ModifiedImage ModifiedDown a screenImage ModifiedImage ModifiedForward a word
  Image Modified Image ModifiedBottom of the listImage ModifiedImage ModifiedEnd of line

 

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Menu

Pressing the Image Modified key displays all the commands for quick reference.

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Flashstore MenuImage Added

Help Screen

Pressing the Image Modified key displays the following screen.

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about flashstoreImage Added

Simple help description's are available for each menu command; press Image Modified key and position the cursor on command you want help for, then press Image Modified.

Windows

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The three windows (from left to right) are:-

The COMMAND window - selects the mostly used commands
The FILE AREA window - displays, fetches and deletes files and shows you what flashstore is doing. 
The INFORMATION window - displays device statistics and commands.

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The COMMAND Window

Seven commands are quickly available by moving the cursor with the Image Modified and Image Modified arrow over the command, then press the Image Modified key.

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The FILE AREA Window

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The middle window displays all files and size that are in your file card area. By placing the cursor over the file name (point and shoot), the following 4 commands can be selected by these keystrokes.

COMMANDKEY
Fetch FileImage Modified
View FileV
Delete FileImage Modified
Copy to CardC

This information is shown in the information window whilst the file area window is in use.

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The COMMUNICATION Window

When executing Flashstore commands the COMMUNICATION window replaces the FILE AREA window. It displays the following:-

  • Banner with the command name
  • Relevant statistical information to allow informed choices.
  • The filename already loaded in the command line ready for editing if required.
  • Warnings - if files are being overwritten or deleted.

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Press Image Modified or Image Modified at the end to leave the window.

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The INFORMATION window

This displays two sets of information.

1. When the cursor is in the COMMAND window it shows the following:-

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DEVICE INFORMATION

which slot you are using in the Banner

  • Flash Chip Number or EPROM and Size
  • File Area Size
  • A Graphical Display of the complete file area. Deleted (grey), Saved files (black) and free area (white) give a quick indication of file usage and whether it is time to reformat the device and get rid of the deleted area.
  • Free and Used Space in bytes up to 1K or Kbytes
  • Number of Deleted and Saved files.

For an in depth look at this popdown go to Section Eleven - Flashstore reference for a list of the commands.

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