hades.models.rtlib.memory
Class MR20

java.lang.Object
  hades.simulator.SimObject
      hades.models.rtlib.memory.GenericMemory
          hades.models.rtlib.memory.MR
              hades.models.rtlib.memory.MR20

All Implemented Interfaces:

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

public class MR20

extends MR

MR20 - a microcode ROM with some bus- and 20 single outputs.

See Also:

Serialized Form

Field Summary

(package private) static java.lang.String[]

labels

Fields inherited from class hades.models.rtlib.memory.MR

alabel, cache_read_addr, D_SIZE, fdata, fdefaultValues, flabel, flength, fseparator, lengthMask, MEF, n_fields, n_words, port_A, port_D, port_S0, port_S1, port_STATE, port_X, port_Y, stateLabel, t_access, t_tristate, t_undefined

Fields inherited from class hades.models.rtlib.memory.GenericMemory

bit_mask, data, enableAnimationFlag, last_read_addr, last_read_data, last_write_addr, last_write_data, n_bits, resourcename, TRISTATED, UNDEFINED, vector_000, vector_111, vector_UUU, vector_XXX, vector_ZZZ

Fields inherited from class hades.simulator.SimObject

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

Constructor Summary

MR20()
MR20 constructor

Method Summary

(package private) boolean	checkChange(int addr, int field)
void	configure() create and display a 'ConfigDialog' to set the parameters for a SimObject.
void	createField(int index, int length, java.lang.String name)
void	createTypesAndFieldsAndMemory()
void	elaborate(java.lang.Object arg) elaborate(): On elaboration, the inputs of the MR20 will be undefined.
void	evaluate(java.lang.Object arg) evaluate(): Return the data at address after t_access
boolean	parse(java.io.BufferedReader reader) parse RAM data from a file specified via its Java 1.1 resourcename.
boolean	save(java.io.PrintWriter PW) write the memory data in a trivial addr:data format, one address per line.
void	setData(int addr, int field, int value) set the data of microcode field 'field' at address 'addr' to 'value'.
void	setDataAt(int address, long value)
void	setDSize()

Methods inherited from class hades.models.rtlib.memory.MR

constructPorts, createDefaultValues, getData, getFieldBits, getFieldChars, getFieldName, getNumberOfFields, getSize, getStateLabel, getToolTip, initializeWithDefaultValues, isDefaultValue, isSeparator, schedulePortOutput, scheduleSingleOutput, setFieldName, setStateLabel, setSymbol

Methods inherited from class hades.models.rtlib.memory.GenericMemory

addMemoryListener, addMemoryListenerOld, canChangeSize, checkInvalidateMemory, constructStandardValues, createMemory, dataAtAddressIsUndefined, dbg, getAddressBusWidth, getAddrOffset, getBitsPerWord, getConfigDialog, getDataArray, getDataAt, getEnableAnimationFlag, getExternalResources, getHexDigitsPerWord, getHexString, getInstructionDecoder, getPropertySheet, getResourcename, initialize, initializeWithRandomValues, initializeWithX, initializeWithZeroes, isConnected, main, merge, needsExternalResources, notifyReadListeners, notifyReadListenersOld, notifyWriteListeners, notifyWriteListenersOld, parseLabelLine, parseRAM, removeMemoryListener, removeMemoryListenerOld, resize, setBitsPerWord, setDataArray, setEnableAnimationFlag, setEnableAnimationFlag, setInstructionDecoder, setResourcename, setSize, toString, warning, write

Methods inherited from class hades.simulator.SimObject

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

Methods inherited from class java.lang.Object

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

Field Detail

labels

static java.lang.String[] labels

Constructor Detail

MR20

public MR20()

MR20 constructor

Method Detail

setDSize

public void setDSize()

Overrides:

setDSize in class MR

createTypesAndFieldsAndMemory

public void createTypesAndFieldsAndMemory()

Overrides:

createTypesAndFieldsAndMemory in class MR

createField

public void createField(int index,
                        int length,
                        java.lang.String name)

Overrides:

createField in class MR

setData

public void setData(int addr,
                    int field,
                    int value)

set the data of microcode field 'field' at address 'addr' to 'value'.

We also reset the internal cache_read_addr to a negative value, to ensure that the changed data will appear in the simulation

Overrides:

setData in class MR

save

public boolean save(java.io.PrintWriter PW)

write the memory data in a trivial addr:data format, one address per line. Both address and data are hex-formatted and separated by a colon (and optionally, some blanks).

Specified by:

save in interface Memory

Overrides:

save in class MR

parse

public boolean parse(java.io.BufferedReader reader)
              throws java.lang.Exception

parse RAM data from a file specified via its Java 1.1 resourcename. If the file is not found or contains illegal data, the RAM is re-initialized to the all-invalid state.

Comment lines starting with '#' or ';' are allowed in the data part of the microcode file only.

Specified by:

parse in interface Memory

Overrides:

parse in class MR

Throws:

java.lang.Exception

setDataAt

public void setDataAt(int address,
                      long value)

Specified by:

setDataAt in interface Memory

Overrides:

setDataAt in class GenericMemory

elaborate

public void elaborate(java.lang.Object arg)

elaborate(): On elaboration, the inputs of the MR20 will be undefined. Correspondingly, the outputs are, too.

Specified by:

elaborate in interface Simulatable

Overrides:

elaborate in class MR

evaluate

public void evaluate(java.lang.Object arg)

evaluate(): Return the data at address after t_access

Specified by:

evaluate in interface Simulatable

Overrides:

evaluate in class MR

checkChange

boolean checkChange(int addr,
                    int field)

configure

public void configure()

Description copied from class: SimObject

create and display a 'ConfigDialog' to set the parameters for a SimObject. The default ConfigDialog for the base class (SimObject) itself is empty except for the 'instance name' of the SimObject.

Overrides:

configure in class MR