The GSP-21 Legend application provides a graphical user interface for editing the effects patches in the DigiTech GSP-21 Legend Guitar Sound Processor. The on-screen slider controls and pop-up menus make programming extremely easier, allowing you to be more creative since the sound editing process is so intuitive and fast.
The GSP-21 Legend application also allows you to print, and maintain configuration control, (never accidentally lose another patch again) of your GSP-21 Legend documents. Thousands of patches can be stored on your computer since each patch document requires only about 500 bytes. And these documents can be mailed (on disks) or electronically transferred by modem between your guitarist colleagues.
The GSP-21 Legend application is System 7 "friendly." It supports the required Apple Events, is MultiFinder and Stationery "aware," is "32-bit clean," has Balloon Help, and adheres to Apple's User Interface Guidelines.
In any dialog where an enabled button has a bold outline drawn around it, you can press the Return or Enter key to select that button.
In any dialog where an enabled button is labeled "Cancel" or "Stop," you can press the Escape key or the command period key combination to select that button.
Installation
These steps will install the GSP-21 Legend application for use:
• Put "Apple MIDI Driver" in your System Folder
• Put " MIDI Manager" in your "Extensions" folder (inside the System Folder)
• Put "PatchBay™" and "PatchBay Help" TOGETHER, wherever you like
• Put the "GSP-21 Legend" application wherever you like
• Restart your Macintosh
PatchBay™ allows you, among other things, to define which port (printer or modem) that your MIDI Interface cable is connected to. Basically this is done by running PatchBay™, and double-clicking the icon in the window. To get help on using this and other PatchBay™ features, select the "About PatchBay…" command under the Apple Menu.
Demo Version
If this is the demo version of GSP-21 Legend, the executable code for a couple of features is not provided. You will hear, NOT SEE, an audible alert when the feature WOULD have operated. Initially, it may seem that the operation worked. These are the two limitations:
• No Configuration documents can be saved to disk
• No Configuration documents (patches) can be downloaded to the DigiTech GSP-21
• No Bulk Data documents can be downloaded to the DigiTech GSP-21
Running GSP-21 Legend
To run the GSP-21 Legend application, you can either:
• Double-click it's icon, or
• Double-click a GSP-21 Legend document's icon, or
• Select one or more GSP-21 Legend documents in the Finder and either:
• Drag them to the GSP-21 Legend icon, or
• Select the Open command under the Finder's File Menu, or
• Select the Print command under the Finder's File Menu
(The command O and command P key combinations also work for opening and printing the selected documents.)
If you select more than one document to open, then as many of them are opened as possible (based on the maximum number of documents allowed to be open at one time.)
If you select one or more documents for print, you will be presented a single Page Setup dialog (which will over-ride the Page Setup parameters saved with each document) and a single Print dialog. Subsequent to your OK, all the documents will be printed, (or queued for print) and the GSP-21 Legend application will quit.
Balloon Help
To see balloon help on various controls, dialogs, and menus, turn on balloon help and position the mouse over the items you're interested in.
Apple Menu
About GSP-21 Legend…
To see the "About" dialog announcing the program function and author credits, select this menu command. To continue, click anywhere in the dialog. (To "play the guitar," hold down the option key while selecting this command.)
File Menu
New…
To create a new GSP-21 Legend document, select this menu command or press the command N key combination. The New Document dialog is presented. To choose from the available Algorithms, select the popup menu. To cancel the New Document dialog, click the Cancel button. To create the specified type of document, click the OK button.
Alternatively, you can select the buttons which represent the effects of the DigiTech GSP-21 Legend. The red lines indicate the guitar signal path options. As you select various effect buttons, other effect buttons become enable or disabled, and the pop-up menu is updated to reflect the Algorithm selected. The effect button icons are miniature depictions of the effect icons taken from the DigiTech manual. From left to right and top to bottom they represent:
• Standard Effects, Delay Modulation, Ultimate Reverb, Gated Reverb,
Reverse Reverb, Chorus, and Flange
• 4-Tap Delay and Delay
• Reverb1 and Reverb2
This command is dimmed and not available if the maximum number of documents allowed to be open at one time has been reached.
Open…
To open an existing document, select this menu command or press the command O key combination. A standard Open File dialog is presented. Only folders and GSP-21 Legend documents will be visible in the scrolling list. To navigate the folder structure select the popup menu. To eject the selected disk, click the Eject button. To navigate quickly to the Desktop, click the Desktop button. To cancel the open dialog, click the Cancel button. To open the currently selected folder or GSP-21 Legend document, click the OK button.
This command is dimmed and not available if the maximum number of documents allowed to be open at one time has been reached.
Close
To close the current document, select this menu command or press the command W key combination. If the document has not been saved, then a warning dialog is presented. At this point you can select Don't Save, Cancel, or Save.
To save the document, click the Save button, and a standard Save File dialog is presented. To navigate the folder structure select the popup menu, or click the Open button to open selected folders. To eject the selected disk, click the Eject button. To navigate quickly to the Desktop, click the Desktop button. To create a new folder, click the New Folder button, and to save the GSP-21 Legend document to the specified folder, enter a file name of your choice and click the Save button.
This command is dimmed and not available if a document is not open.
Save
To save the current document, select this menu command or press the command S key combination.
This command is dimmed and not available if a document is not open.
This command is also dimmed and not available if the document has already been saved and has not yet been changed. A change is also constituted if you select the Page Setup command. (The Page Setup parameters are saved with the document.)
Save As…
To save the document to a specified document, select this menu command. If the current document has not been saved, the command S key combination can be used. A standard Save File dialog is presented, and it works as described in the Close menu command help text.
This command is dimmed and not available if a document is not open.
Revert…
To revert to the last saved version of the current document, select this menu command. A caution alert will be displayed asking you to confirm the command.
This command is dimmed and not available if either a document is not open, has not been changed, or has never been saved.
Page Setup…
To set the printer Page Setup parameters, select this menu command. To select portrait or landscape mode select the appropriate icons. Selecting this menu command constitutes a document change since the current Page Setup parameters are stored with each document. To cancel your Page Setup changes click the Cancel button (the Escape key may not work here). To accept your Page Setup changes click the OK button.
This command is dimmed and not available if a document is not open.
Print…
To print the document, select this menu command or press the command P key combination. To cancel your Print request click the Cancel button (the Escape key may not work here). To accept your Print request click the OK button.
This command is dimmed and not available if a document is not open.
Transfer…
To launch another application without returning to the Finder, select this menu command. A standard Open File dialog is presented. Only folders and applications will be visible in the scrolling list. This dialog works as described in the Open menu command help text.
Quit
To quit the GSP-21 Legend application, select this menu command or press the command Q key combination. If the current document has not been saved, then a warning dialog is presented. At this point you can select Don't Save, Cancel, or Save.
A standard Save File dialog is presented, and it works as described in the Close menu command help text.
Edit Menu
Undo
To undo the last Cut, Paste, or Clear command, select this menu command or press the command Z key combination. This command is not available if there are no edit text fields, or if there have been any new characters typed into an edit field. You can "undo" an "undo."
Cut
To delete the selected text from the currently active edit field, select this menu command or press the command X key combination. This command is not available if there are no edit text fields. The selected text is placed on the Clipboard.
Copy
To copy the selected text from the currently active edit field, select this menu command or press the command C key combination. This command is not available if there are no edit text fields. The selected text is placed on the Clipboard.
Paste
To paste a copy of the contents of the Clipboard at the insertion point of the currently active edit field (or in place of the selected text), select this menu command or press the command V key combination. This command is not available if there are no edit text fields.
Clear
To delete the selected text from the currently active edit field, select this menu command or press the command B key combination. This command is not available if there are no edit text fields. The Clipboard remains unchanged since the selected text is NOT placed on the Clipboard.
Select All
To select all of the text in the currently active edit field, select this menu command. This command is not available if there are no edit text fields.
Show Clipboard
This command is not used and never available.
MIDI Menu
MIDI Setup…
To set the MIDI Transmit and Receive channel parameters, select this menu command or press the command M key combination. To cancel your changes, click the Cancel button. To accept your Transmit and Receive channel parameters, click the OK button. (Be sure that the Transmit and Receive channel settings are compatible with the settings in the DigiTech GSP-21.) To disable all message transmission, set the Transmit Channel to "Off." To receive messages on all channels, set the Receive Channel to "All Channels."
This command is dimmed and not available if the MIDI driver could not be found.
Program Setup…
To set the Program Number (or "patch" number) and Interactive Mode setting, select this menu command. To cancel your changes, click the Cancel button. To accept your changes, click the OK button.
To change the Program Number by a single increment click on the arrows. To move more quickly, drag the scroll bar, or click in the page-left and page-right areas. To send a Program Change MIDI message for the selected Program Number on the selected Transmit channel, click the Send Program Change button.
Normally, a configuration is not downloaded to the DigiTech GSP-21 unless the "Download Configuration" menu command is selected. To cause the current configuration changes to be automatically downloaded every time you change a parameter setting, turn on the Interactive Mode (auto transfer). In this way you can more easily experiment with parameter settings, and hear the effect immediately without having to select the Download Configuration menu command. Turning Interactive Mode on also causes the Program Numbers to be automatically transmitted as you change the Program Number control.
This command is dimmed and not available if the MIDI driver could not be found.
Upload Configuration…
To upload the patch number in the DigiTech GSP-21 defined by the Program Number (See Program Setup…), select this menu command. The Upload Configuration dialog is presented. To cancel the upload, click the Cancel button. To start the upload, click the OK button. A progress bar will be displayed to show you the upload progress. All errors in transmission result in 10 retries after which an error dialog will be displayed. Upon successful receipt of the requested configuration, a new configuration window is presented displaying the uploaded configuration parameters.
This command is dimmed and not available if the MIDI driver could be found, or if the maximum number of open configuration windows allowed is met. It is also dimmed and unavailable if the MIDI Transmit channel is set to "Off."
Download Configuration
To download the current configuration to the patch number in the DigiTech GSP-21 defined by the Program Number (See Program Setup…), select this menu command or press the command D key combination. To cause this command to be automatically invoked as you change the configuration parameters, turn on Interactive Mode. (See Program Setup…)
If the Program Number is greater than 73, then the patch number will be the Program Number - 73. For example, if the Program Number is 95, then the configuration data will be downloaded to patch 22 in the DigiTech GSP-21.
This command is only available if the MIDI driver could be found, and you have at least one configuration window open.
Bulk Upload…
To upload the entire Configuration Set from the DigiTech GSP-21, select this menu command. The Bulk Upload dialog is presented. To cancel the upload, click the Cancel button. To start the upload, click the OK button. A progress bar will be displayed to show you the upload status. All errors in transmission result in 10 retries after which an error dialog will be displayed. Upon successful receipt of the entire Configuration Set, you will be presented a standard Save File dialog.
You can easily distinguish "BULK" Configuration Set documents from the single configuration documents, by their distinguishing icons. (It is quite obvious.)
Bulk Download…
To download an entire Configuration Set to the DigiTech GSP-21, select this menu command. A standard Open File dialog is presented. Only folders and GSP-21 "BULK" Configuration Set documents will be visible in the scrolling list. To navigate the folder structure select the popup menu. To eject the selected disk, click the Eject button. To navigate quickly to the Desktop, click the Desktop button. To cancel the open dialog (and the download), click the Cancel button. To download the selected "BULK" Configuration Set document, click the OK button. The Bulk Download dialog is presented.
To cancel the download, click the Cancel button. To start the download, click the OK button. A progress bar will be displayed to show you the download status. All errors in transmission result in 10 retries after which an error dialog will be displayed.
A/B Compare…
To make A/B comparisons between two or more open configurations, select this menu command. To download a configuration, select the radio button which identifies the configuration you want to send. Using this command you can quickly do "A/B" sound comparisons between all the currently open configuration documents.
This command is dimmed and not available if the MIDI driver could be found, or if there are less than two configuration windows open. It is also dimmed and unavailable if the MIDI Transmit channel is set to "Off."
Windows Menu
To switch between the currently open configuration windows, select the menu command whose name identifies the desired configuration window or press the command key equivalent. The menu command with a "check mark" identifies the currently selected (frontmost) configuration window.
This menu is dimmed and not available if a document is not open.
Tile Windows
To neatly arrange all of the GSP-21 Legend configuration windows, select this menu command.
Help Menu
GSP-21 Legend Help…
To get help on the GSP-21 Legend application, select this menu command or press the command ? key combination (command / also works). The Help dialog is presented (that's what you're reading now.)
To quickly navigate to various sections of the help text select the popup menu and choose a Topic.
To save a copy of the help text to a TeachText file, click the Save As… button. A standard Save File dialog is presented and it works as described in the Close menu command help text.
To scroll the help text, click the up and down arrows, drag the scroll bar, or click in the page-up and page-down areas.
To continue, click the OK button.
Configuration Window
To change parameters in a configuration window, select any of the popup menus and choose new settings, or use the scroll bars. To change the settings by a single increment click on the arrows, to move more quickly, drag the scroll bar, or click in the page-left and page-right areas. Changing any control constitutes a change, thus enabling the Save (and possibly the Revert) menu command(s).
Common Problems
If the DigiTech GSP-21 doesn't respond, except for program change commands, then set the MIDI channel on the DigiTech GSP-21 to a channel between 1 and 16. (It won't respond to System Exclusive messages when set to receive on ALL channels.)
If the MIDI menu is not available, it might be because the MIDI drivers are not installed in your System Folder.
If uploads and downloads indicate that the DigiTech GSP-21 is not responding, make sure both the MIDI IN and MIDI OUT cables are connected properly between the Macintosh and the DigiTech GSP-21.
Note about Gate Attenuation
The Gate Attenuation parameter is not currently recognized by the GSP-21 Legend Algorithm Editor. Therefore, it's value on upload from the DigiTech GSP-21 Legend signal processor is not saved in Configuration documents. When a Configuration is downloaded to the DigiTech GSP-21 Legend, the Gate Attenuation parameter is set to -45dB.
A Bulk Upload document will, however, contain all information in the DigiTech GSP-21 Legend, including the Gate Attenuation settings.
