This section describes the more advanced features and commands of the Filer popdown, and should be read in conjunction with The Filer. The features described here include:
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Users may not understand the value of using "The Filing System Hierarchical System," until it is too late. Here is a fictitious example showing what 482 files could look like if they are just dumped into the flash card. There are no directories, and when using EPROMs or Flashcards, no date is stored. The order of the files are known. the first file saved is on Page 1 top left-hand corner and the last file is on Page 2, bottom right-hand corner. There is no way of knowing what each file contains. Perhaps the answer is in the file name.
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DEVICE can be specified as one of the following in Application Load or Save operations:
| Specification | Effect | |
|---|---|---|
| RAM in slot 0 (internal memory) | |
| RAM in slot 1 (external memory) | |
| RAM in slot 2 (external memory) | |
| RAM in slot 3 (external memory) | |
| Any RAM memory; ie 0, 1, 2, or 3. Used by CLI for temporary files, and lost on reset. | |
| FLASH or EPROM in slot 0 (internal memory)OZ4.7 | |
| FLASH or EPROM in slot 1 (external file area)OZ4.7 | |
| FLASH or EPROM in slot 2 (external file area)OZ4.7 | |
| FLASH or EPROM in slot 3 (external file area)OZ4.7 | |
| ROM | |
| Screen | |
| Printer; via printer driver so that highlight codes are interpreted | |
| Communications; via serial port | |
| Standard input | |
| Standard output | |
| Null: absorbs output, and acts like an empty file on input | |
Wildcards
The device, directory and file name can contain the following wildcards:
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| File name | Creation date & time | Last updated date & time | Size (in characters) | ||
|---|---|---|---|---|---|
letter.txt | Today | 17:42:54 | Today | 17:42:54 | 1254 |
novel.txt | 01-Jun-1987 | 17:41:17 | Today | 14:32:58 | 13112 |
game.bas | 02-Jun-1987 | 12:27:43 | 02-Jun-1987 | 12:27:43 | 827 |
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Updated Date is the only Date used
Although both the Creation date & time and Last updated date & time are shown in two columns in practise, they remain the same value as none of the applications on the Z88 use this feature i.e. when the file is changed, the creation date & time is also updated.
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