hades.models.rtl
Class IDT6164

java.lang.Object
  hades.simulator.SimObject
      hades.models.rtl.IDT6116
          hades.models.rtl.IDT6164

All Implemented Interfaces:

java.lang.Cloneable, ContextToolTip, Memory, java.io.Serializable, Simulatable

public class IDT6164

extends IDT6116

implements Memory

IDT6164 - static CMOS RAM of 8Kx8 bits. We use the IDT name instead of the original Hitachi (HC6164), because IDT seems to be the only company left that provides a datasheet...

The RAM has separate low-active nCS chip select, nOE output enable, and nWE asynchronous write enable control inputs. Data lines are bidirectional.

The RAM outputs are tri-stated and the input disabled as long as nCS is high. When nCS is low and nOE is low, the data from the currently addressed RAM cell is outputted at the data lines after t_access. If nCS is low and nWE low, the addressed RAM cell is written (continuously) with the current data inputs.

Clicking 'edit' on the RAM model will open a graphical editor for the RAM data, that also allows to specify the (optional) RAM initialization data file.

See Also:

Serialized Form

Field Summary

Fields inherited from class hades.models.rtl.IDT6116

_listenerTable, address, data, index_A0, index_D0, MEF, N_ADDRESS_INPUTS, N_BITS_PER_WORD, N_DATA_INPUTS, n_words, output_0, output_1, output_X, output_Z, port_nCS, port_nOE, port_nWE, resourcename, t_access, t_tristate, t_undefined, TRISTATED, UNDEFINED

Fields inherited from class hades.simulator.SimObject

classloader, console, debug, editor, name, parent, ports, propertySheet, simulator, symbol, versionId, visible

Constructor Summary

IDT6164()
IDT6164 constructor

Method Summary

int	getNumberOfAddressInputs()
java.lang.String	toString() toString() - the usual info method

Methods inherited from class hades.models.rtl.IDT6116

addMemoryListener, canChangeSize, configure, dbg, elaborate, evaluate, getAddrOffset, getAdress, getBitsPerWord, getConfigDialog, getDataArray, getDataAt, getExternalResources, getHexString, getPropertySheet, getResourcename, getSize, initialize, initRAM, merge, needsExternalResources, parse, parseRAM, printSramContent, removeMemoryListener, resize, save, setBitsPerWord, setDataArray, setDataAt, setResourcename, setSize, write

Methods inherited from class hades.simulator.SimObject

constructDynamicSymbol, copy, getBindkey, getClassLoader, getDebug, getEditor, getFullName, getName, getParent, getPort, getPorts, getResourceAsStream, getSimulator, getSymbol, getSymbolResourceName, getToolTip, getVersionId, isVisible, keyPressed, message, mousePressed, needsDynamicSymbol, setClassLoader, setConsole, setDebug, setEditor, setName, setParent, setPorts, setSimulator, setSymbol, setVersionId, setVisible, tearDown

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Methods inherited from interface hades.models.memory.Memory

addMemoryListener, canChangeSize, getAddrOffset, getBitsPerWord, getConfigDialog, getDataArray, getDataAt, getResourcename, getSize, merge, parse, removeMemoryListener, resize, save, setBitsPerWord, setDataArray, setDataAt, setResourcename, setSize

Constructor Detail

IDT6164

public IDT6164()

IDT6164 constructor

Method Detail

getNumberOfAddressInputs

public int getNumberOfAddressInputs()

Overrides:

getNumberOfAddressInputs in class IDT6116

toString

public java.lang.String toString()

toString() - the usual info method

Overrides:

toString in class IDT6116