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69c83980
编写于
8月 18, 2019
作者:
Z
Zihao Yu
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# NEMU
NEMU(NJU Emulator) is a simple but complete full-system x86 emulator designed for teaching purpose.
Small x86 programs can run under NEMU.
NEMU(NJU Emulator) is a simple but complete full-system emulator designed for teaching purpose.
Currently it supports x86, mips32, and riscv32.
To build programs run above NEMU, refer to the
[
AM project
](
https://github.com/NJU-ProjectN/nexus-am.git
)
.
The main features of NEMU include
*
a small monitor with a simple debugger
...
...
@@ -10,17 +11,23 @@ The main features of NEMU include
*
expression evaluation without the support of symbols
*
watch point
*
differential testing with reference design (e.g. QEMU)
*
CPU core with support of most common used x86 instructions in protected mode
*
real mode is not supported
*
x87 floating point instructions are not supported
*
snapshot
*
CPU core with support of most common used instructions
*
x86
*
real mode is not supported
*
x87 floating point instructions are not supported
*
mips32
*
CP1 floating point instructions are not supported
*
riscv32
*
only RV32IM
*
memory
*
I386
paging
*
TLB is optional
*
paging
*
TLB is optional
(but necessary for mips32)
*
protection is not supported
*
I386
interrupt and exception
*
interrupt and exception
*
protection is not supported
*
4
devices
*
serial, timer, keyboard, VGA
*
5
devices
*
Args Rom,
serial, timer, keyboard, VGA
*
most of them are simplified and unprogrammable
*
2 types of I/O
*
port-mapped I/O and memory-mapped I/O
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