Bus: Difference between revisions
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== General == | == General == | ||
A '''"bus"''' in [[TARGET 3001!]] is a collection (pool) of all signals which appear in a circuit. Buses are distinguished in [[schematic]]s graphically e.g. as addresses bus [A0…A15], data bus [D0…D7], control bus [Clk, Res, etc.]. You can connect every "signal" to each bus and get it out again later. When you start a | A '''"bus"''' in [[TARGET 3001!]] is a collection (pool) of all signals which appear in a circuit. Buses are distinguished in [[schematic]]s graphically e.g. as addresses bus [A0…A15], data bus [D0…D7], control bus [Clk, Res, etc.]. You can connect every "signal" to each bus and get it out again later. When you start a signal wire from a bus, a list of all signals is displayed to choose from.<br><br><br> | ||
[[image:Bus_example.jpg|Bus example]]<br><b>Image:</b> A bus (blue) contains all the signals used in your project. In "Place wire (2)" mode a click on the bus opens a list of signals which allows selecting a signal to lead it out of the bus. It will start from the point where you had clicked.<br><br> | |||
== Draw a bus == | == Draw a bus == | ||
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If you wish to place the '''"Signal Name"''' beside each of the the [[signal]]s, hover the mouse to the spot where the signalname shall appear and press the '''[n]''' key and follow the dialog. The settings for the Bus can be configured by clicking [[Mousekeys|'''M11''']] or by pressing the '''[o]''' key while drawing a bus which will open the '''"Bus option"''' dialog where the parameters such as thickness and color can be set. | If you wish to place the '''"Signal Name"''' beside each of the the [[signal]]s, hover the mouse to the spot where the signalname shall appear and press the '''[n]''' key and follow the dialog. The settings for the Bus can be configured by clicking [[Mousekeys|'''M11''']] or by pressing the '''[o]''' key while drawing a bus which will open the '''"Bus option"''' dialog where the parameters such as thickness and color can be set. | ||
When '''starting a signal wire from a bus''' (by clicking [[Mousekeys|'''M1''']] or pressing the '''[2]''' (place wires) key in '''"Place Wires"''' mode a small dialog will open providing a list of all signal types to choose from, and a button to activate the '''"Bus Assistant"'''.<br><br> | When '''starting a signal wire from a bus''' (by clicking [[Mousekeys|'''M1''']] or pressing the '''[2]''' (place wires) key in '''"Place Wires"''' mode) a small dialog will open providing a list of all signal types to choose from, and a button to activate the '''"Bus Assistant"'''.<br><br> | ||
==Bus Assistant== | ==Bus Assistant== | ||
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*When placing signals towards the bus please check by the use of the x-ray view (key [#]) whether the bus line has been splitted. | *When placing signals towards the bus please check by the use of the x-ray view (key [#]) whether the bus line has been splitted. | ||
*Signal tracks which already had been placed can not simply be moved onto the bus, because the bus might not get split and the track eventually not is connected properly. | *Signal tracks which already had been placed can not simply be moved onto the bus, because the bus might not get split and the track eventually not is connected properly. | ||
*Please also have a look here: [[Purple airwires in the schematic]] | |||
<br><br> | |||
[[Image:bus_e.jpg|none|Correct and wrong...]] | [[Image:bus_e.jpg|none|Correct and wrong...]]<br>Image: Inspecting bus connections by the use of the hash key [#].<br><br><br> | ||
Latest revision as of 13:53, 11 June 2019
General
A "bus" in TARGET 3001! is a collection (pool) of all signals which appear in a circuit. Buses are distinguished in schematics graphically e.g. as addresses bus [A0…A15], data bus [D0…D7], control bus [Clk, Res, etc.]. You can connect every "signal" to each bus and get it out again later. When you start a signal wire from a bus, a list of all signals is displayed to choose from.
Image: A bus (blue) contains all the signals used in your project. In "Place wire (2)" mode a click on the bus opens a list of signals which allows selecting a signal to lead it out of the bus. It will start from the point where you had clicked.
Draw a bus
You can create a "Bus" by using one of the following methods:
- press [b] (Draw Buses) key while in pointer mode
- by the menu bar and selecting "Elements" then "Draw Buses"
- by
(Drawing Functions) tool and then the 
(Draw Buses) tool
You can leave this function by "[Esc]" or by clicking M12.
If you wish to place the "Signal Name" beside each of the the signals, hover the mouse to the spot where the signalname shall appear and press the [n] key and follow the dialog. The settings for the Bus can be configured by clicking M11 or by pressing the [o] key while drawing a bus which will open the "Bus option" dialog where the parameters such as thickness and color can be set.
When starting a signal wire from a bus (by clicking M1 or pressing the [2] (place wires) key in "Place Wires" mode) a small dialog will open providing a list of all signal types to choose from, and a button to activate the "Bus Assistant".
Bus Assistant
The "Bus Assistant" automatically connects several signal wires to a Bus. Enter the desired directions, the signal names and the font type. Then press the "Ok" button to begin.
Sources of errors
- In case the signal track not properly is connected to the bus error warnings in the check project routine might occur (Island without Ref.-Pin: Signal .....). Also when exporting to Eagle (r) errors might occur.
- When placing signal tracks coming from out the bus one should select the signal from the dialog box which appears when touching the bus.
- When placing signals towards the bus please check by the use of the x-ray view (key [#]) whether the bus line has been splitted.
- Signal tracks which already had been placed can not simply be moved onto the bus, because the bus might not get split and the track eventually not is connected properly.
- Please also have a look here: Purple airwires in the schematic
Image: Inspecting bus connections by the use of the hash key [#].