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Vision/L is able to transfer files out of the Z88 to the host computer and to capture files sent by the host computer to the Vision/L screen. There are significant differences in the way that these two functions are performed. When transmitting a file, Vision/L will send the file to the host without changing the format or order of any part of the file. As far as the host is concerned, it appears as though the user is typing on the Vision/L keyboard. When receiving a file, Vision/L interprets all the escape codes sent by the host computer and writes any necessary characters to the file to duplicate the effect of the escape sequences.
Transmit a file
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This command is used to transmit a file from the memory of the Z88 to the host computer. The file may be present on any of the Z88 devices or directories but it is not possible to send a file directly from another application running on the Z88. Thus, for example, if a document has been created in PipeDream and it is required to send it to a host computer, it will be necessary to save the file from PipeDream and then enter Vision/L to transmit the file.
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A problem that may be encountered with certain hosts is that the host receive buffer may overflow during file transfer resulting in missing characters in the received file. This may occur because the host has been configured to expect manual typing speeds, rather than electronic transfer. In such cases, handshaking is often not provided for input data. The solution is to reconfigure the host input buffer so that Xon/Xoff protocol is enabled, allowing error free data transfer.
Capture a file
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File capture can be initiated from the menu or by pressing ◇ V C. For general details regarding the use of menus and help, refer to a previous section.
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If Vision/L detects that the device that has been used for the capture file has become full during the capture process, it will close the capture file and issue a warning to that effect. If the user wishes to continue capturing information, he should enter the Filer and either change devices or erase unwanted files on the current device in order to create more room. Once this has been completed, capture can be re-started, either by adding new information to the existing capture file or by choosing a different name for the capture file.
Quit capture Code
Quit capture ◇ V Q
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Quit capture stops the capturing of information from the screen and also closes the capture file.
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