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JNiosEmu is an educational Nios II based development environment and emulator with the purpose of making it easy to learn programming in assembler. Assemble your source with a single button click, immediately see how values change in a register or memory. All this without any prior knowledge of assembler programming or complex tool chains.

Home Page: http://stpe.github.io/jniosemu/

Assembly 5.33% Shell 0.11% Java 93.22% Batchfile 0.45% NSIS 0.90%
assembler emulator nios altera java

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chriscoyfish jmc734 zhuowei schwarzy1 manuellavr bellmit fabus1184 superflo22 wizkid

jniosemu's Issues

Program freeze after NumberFormatException

NumberFormatExceptions are thrown sometimes when immediate values or variable initializers are too big to be stored. This makes all buttons have no effect when clicked and not being able to save or exit the program.

I am running Linux with OpenJDK version 1.8.0_322.

Steps to reproduce:
assemble the following program

.data
	a: .byte 0xFFFFFFFFFFFFFFFF
.end

This will result in the following exception:

Exception in thread "Thread-0" java.lang.NumberFormatException: For input string: "FFFFFFFFFFFFFFFF"
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
	at java.lang.Long.parseLong(Long.java:592)
	at jniosemu.emulator.compiler.Compiler.parseValue(Compiler.java:165)
	at jniosemu.emulator.compiler.Compiler.parseValue(Compiler.java:93)
	at jniosemu.emulator.compiler.Variable.<init>(Variable.java:37)
	at jniosemu.emulator.compiler.Compiler.parseLine(Compiler.java:323)
	at jniosemu.emulator.compiler.Compiler.parseLine(Compiler.java:278)
	at jniosemu.emulator.compiler.Compiler.compile(Compiler.java:448)
	at jniosemu.emulator.EmulatorManager.compile(EmulatorManager.java:306)
	at jniosemu.emulator.EmulatorManager.update(EmulatorManager.java:413)
	at jniosemu.events.EventManager$EventSender.sendEvent(EventManager.java:294)
	at jniosemu.events.EventManager$EventSender.run(EventManager.java:254)

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