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1. INTRODUCTION This document explains how to use SCHDRAW. SCHDRAW lets you draw schematics and other drawings. You should have already run the automatic demo program, as explained in the READ.ME file. If not, read the READ.ME file before continuing. 2. GETTING READY NOTE: In the following discussions, all text within quotes is text to be entered by you, from the keyboard. The text "<Enter>" represents a single keystroke of the Enter key. You must first install the Microsoft-compatible mouse driver program on the disk that was supplied with your mouse. If you own a Microsoft or Logitech mouse, the correct mouse driver command is: "MOUSE<Enter>" (invokes MOUSE.COM). If you own a Mouse Systems PC Mouse, the correct mouse driver command is: "MSMOUSE<Enter>" (invokes MSMOUSE.COM). If you own a Torrington Manager Mouse, the correct mouse driver command is: "TMOUSE<Enter>." In most cases a comm port option is also required, see your mouse manual for additional information. After your system is booted and the mouse driver is installed, insert the demo disk in drive A and make A the current drive: "A:<Enter>". You must run the self-running demo first, as it sets up the required graphics adapter mode. You are now ready to run SCHDRAW. First, we will walk you through the use of some of the more common SCHDRAW commands. After this, you can go back and experiment with other SCHDRAW commands. At the end of the discussion is a complete list of SCHDRAW commands and their functions. Since all disk operations have been removed from the programs, there is no way you can harm your system or the disk - worse case, you may have to reboot. 3. SCHDRAW SCHDRAW is SCHEMA's main program. All schematic and object creation is done in SCHDRAW. To invoke SCHDRAW with the demo schematic drawing, enter the following: "SCHDRAW LOGIC<Enter>" SCHDRAW briefly displays a sign-on message, clears the screen, and places a Command Window (with Command Boxes) on the left side of the screen and a Drawing Window on the rest of the screen. After this, it takes a few seconds for the drawing and objects to load. If an error message appears, you probably have not installed the mouse driver correctly or run the self-running demo. . Go back and do this now. When the drawing has loaded, the cursor appears in the center of the Drawing Window. Moving the mouse moves the cursor. If the cursor does not move, or moves in an unusual manner, the mouse driver is probably not installed. You should exit SCHDRAW (CNTRL-BREAK) and reinstall the mouse driver. If the cursor is working correctly, move it to the bottom or right edge of the screen. The drawing pans to the bottom or right, respectively. You can pan the screen by moving the cursor to any screen edge (including the far, left edge). Practice panning the drawing until you feel comfortable with the panning feature. Next, move the cursor over the ZOOM Command Box and press and release (click) the left mouse button. (This process of invoking a command is referred to as 'selecting'). The screen now shows a less detailed, but larger area of the drawing. Again, moving the cursor to a screen edge pans the drawing. Note that commands are always selected with the LEFT mouse button. Now, select PAGE and you will see the complete schematic page on the screen. Go back and select ZOOM again and the screen returns to the original viewing range. Now, select DRAW. A new set of commands appears in the lower portion of the Command Window. These are the DRAW Secondary Commands. Next, select WIRE. Move the cursor to the center of the Drawing Window and press and hold the left mouse button. Now, as you move the mouse, a wire is drawn. Right angle wires are easily drawn by changing the mouse direction. If the cursor touches a screen edge, the drawing pans and the wire continues to be drawn. When you release the mouse button, the wire is completed. Experiment with WIRE by drawing several wires. You can change from signal to bus wires by reselecting the WIRE Command Box. You will notice the thin wire icon changes to a fat wire in the WIRE Command Box. Next, select OBJECT. When OBJECT is selected, a Text Window appears in the lower portion of Drawing Window. This is where keyboard text is displayed. Use the keyboard to enter the following object name: "74LS86<Enter>". The Text Window is removed and the disk drive is selected as SCHDRAW retrieves the 74LS86 object from the demo object library. Now, move the cursor to the center of the Drawing Window and press and hold the mouse button. The 74LS86 object appears with an auto-assigned reference designator. As long as you hold the mouse button, you can move the object around the drawing. If the 74LS86 object touches a border, the drawing pans. Releasing the button places the object. Also at this time, the Text Window reappears, letting you enter the name of another object, if desired. If you enter: "? 74*<Enter>", a list of all objects in the demo library beginning with 74 appears. Press any key to remove the directory from the screen. Experiment drawing various objects. By entering "\n" after an object name, you can call-up alternate pin-outs (gate sections) of objects, i.e., entering "74LS00\C" retrieves the third (C-gate) section of a 74LS00 object, "74LS00\D" retrieves the D-gate section, and so on. Alternate physical orientations or rotations can also be selected by entering "\xa" after the object name. Entering "74LS00\2C" retrieves the DeMorgan version of the C-gate section or entering "DNPD\2,Q1" retrieves the a 90 degreee rotated version of a NPN transistor. There are actually eight different physical rotations available for the DNPN object, called up via \1-8. We will discuss below how to modify gate-sections and orientations for objects already on the screen. Now select LABEL. Again the Text Window appears. You can enter any text. For example: "TEST<Enter>." The Text Window disappears. Position the cursor in the Drawing Window and press and hold the mouse button. The label just entered (TEST) appears. As long as the mouse button is held, the label can be moved anywhere on the drawing and assigned to a wire. Releasing the button places the label. Now, select EDIT. Another set of Secondary Commands appears. Select MOVE. Position the cursor over one of the schematic objects. Now, press and hold the LEFT mouse button. (If a beep is generated, you have not placed the cursor exactly over the object. Release the mouse button and try again.) The object is now selected and as long as you hold the mouse button, the object can be moved. Releasing the button places the object. As you see, no rubberbanding of wires takes place on object MOVEs. However, rubberbanding does occur on REGION MOVEs. Now, select COPY. Repeat the above sequence and instead of moving an object, you can make a copy of it. Let's erase an object. Select ERASE. Again, position the cursor over an object and click the left mouse button. The object disappears. During any of these operations, you can select UNDO to undo the operation you have just done (you could have also selected UNDO during any of the DRAW commands). With current versions of SCHEMA, the RIGHT mouse button selects the UNDO command. Now while still in EDIT, select OBJECT. Position the cursor over the NPN transistor and click the left mouse bottom. The object's name and reference designator appear in the text window: DNPN\2,Q1. Now use the left arrow key to position the cursor over the 2, press <Del>, enter the number 3, and then press <Enter>. The NPN object is instantly updated to reflect the third orientation. You can continue doing this and display all 8 rotations of the NPN transistor. Next, select SCH ED. A prompt appears on the screen. Press "<Enter>." After a few seconds, a new set of commands appears in the Command Window. You are now in the SCHDRAW Object Editor, used to create/edit objects and symbols for use in the Schematic Editor (SCH ED). You will notice some of the OBJ ED commands are identical to SCH ED commands. Also some new, object-oriented commands are displayed. Select OBJ ED, and press "<Enter>" after the prompt. After a few seconds, you will be back in the schematic editor. Now select FILE, followed by QUIT. A prompt appears - press "<Enter>". You are now back in DOS. This completes our brief introduction to SCHDRAW. Try some of the other commands we have not discussed. If you want a blank piece of paper to practice with, enter: "SCHDRAW BLANK<Enter>" This invokes SCHDRAW with a blank drawing page, named BLANK.P01. 4. SCHDRAW COMMAND SUMMARY The following is a list of all SCHDRAW commands. Schematic Editor commands are listed first, followed by Object Editor commands. SCHEMATIC EDITOR COMMANDS AREA - Lets you select an AREA to ZOOM to. CONFIG - Sets SCHDRAW configuration parameters. C GRID - Activates and deactivates the invisible 8- pixel cursor snap grid. LIBR - Displays the names of current object libraries assigned to the schematic. PAN - Sets the Drawing Window panning speed. RPT - Sets the X- and Y-offset values (in pixels) for use under DRAW*REPEAT. V GRID - Activates and deactivates the visual 16-pixel drawing dotted grid field. WI HDR - Activates and deactivates signal wire, object, and label end-point markers for easier schematic creation. XY - Turns the Cursor Coordinate Window (electronic ruler) on or off. DRAW - Used to add schematic information to drawings. Most of the information is interpreted by SCHEMA's post- processors. ARC - Adds right-angle signal and bus connections. Four different orientations are available. WIRE size selects ARC type: signal (thin) or bus (fat). DOT - Adds connection dots to signal T-connections. OBJECT - Retrieves objects from object libraries. Also, displays library directories. LABEL - Adds labels to signal wires. REPEAT - Steps and repeats the last command. WIRE - Adds signal and bus wires. EDIT - Used to edit existing drawing information. COPY - Copies the existing image or REGION. ERASE - Removes the existing image or REGION. MOVE - Moves the existing image or REGION. OBJECT - Edits an existing object's text line for the purpose of changing reference designators, gate sections, physical rotation, etc. OBJ PM - Displays an object's required parameters. REGION - Defines an area to be MOVE'd, COPY'd, or ERASE'd. FILE - Various file operations. LOAD - Loads a drawing page into the Schematic Editor. Also used to view DOS directories. MERGE - Merges two darwings together. ***NOT IN DEMO VERSION*** PRINT - Prints the drawing directly to the printer or spools it to disk for background printing. ***NOT IN DEMO VERSION*** REDRAW - Redraws the current drawing. SAVE - Saves the current drawing to disk. ***NOT IN DEMO VERSION*** QUIT - Returns to DOS. NOTES - Used to add non-schematic LINEs and TEXT to a drawing. Not interpreted by SCHEMA's post-processors. LINE - Adds thin, thick, dotted and dashed lines. TEXT - Adds small and large text. PAGE - Displays the entire page of the current drawing. UNDO - Reverses the last executed command. Also activated with the RIGHT mouse button. ZOOM - Provides two different viewing perspectives. OBJECT EDITOR COMMANDS BIT - Used to create or edit bit images dot-by-dot (pixel- by-pixel). Mode 1 selects an existing bit image. Mode 2 is used to create/edit a bit image. Mode 3 places the bit image in the Drawing Window. BODY - Associates an object's visual shape with its part number and BOM information. C GRID - Activates and deactivates the invisible 8-pixel cursor snap grid. DESC - Defines four object description fields. These contain BOM information, part numbers, in-house descriptions, etc for SCHEMA objects. DF PI - Defines pin connection points, pin types, and names for objects. These definitions are use for post-processor net/pin/wire list extraction. ERASE - Erases an image from the drawing window. ID - Displays the various object subcomponents that comprise an object. LINE - Adds thin, thick, dotted, and dashed lines. LOAD - Loads preexisting objects into the Object Editor. NEW - Clears the Object Editor drawing window. OBJ - Adds an object to another object (nests objects). PARM - Defines object parameter locations and names. PI HD - Adds pin headers (stubs) to visual objects. SAVE - Saves an object to the selected object library. ***NOT IN DEMO VERSION*** TEXT - Adds text. UNDO - Reverses the last command. Also activated with the RIGHT mouse button. ZOOM - Displays objects from two unique viewing perspectives. 5. MORE INFORMATION SCHEMA is available from Omation and is priced at $495. For more information or to order SCHEMA contact: Omation, Inc. 1701 North Greenville Avenue., Suite 809 Richardson, TX 75081 214-231-5167 TELEX: 5106016604 OMATION INC UQ