ridethepig/PA-NEMU2021

my implementation of NJU ICS PA 2021

ICS2021 PA(riscv64)

ICS2021 Programming Assignment

This project is the programming assignment of the class ICS(Introduction to Computer System) in Department of Computer Science and Technology, Nanjing University.

For the guide of this programming assignment, refer to http://nju-ics.gitbooks.io/ics2021-programming-assignment/content/

To initialize, run

bash init.sh subproject-name

See init.sh for more details.

The following subprojects/components are included. Some of them are not fully implemented.

• NEMU
• Abstract-Machine
• Nanos-lite
• Navy-apps

NOT a NJU Student, I did this only to kill time.

• This is a RISCV64 version (quite similar to RV32, though not compatible in binary).
• All Required tasks (those yellow ones) completed and tested (maybe), except some related to PAL(I can't find a perfectly workable copy of PAL data, so only simple tests have been done about PAL)
• Optimized speed by reduce device update frequency (God knows why the original framework call gettimeofday when device-update every cycle)
• No support for audio | disk | sdcard | full-rtc
• Difftest for only PA1 and PA2 (Because I didn't implement Privilege U or Interrupt sync to spike (even no detach nor snapshot))

This repo has a almost workable PAL: https://github.com/huoshan12345/SdlpalEdit/tree/master/pal

Remember to change all these filenames to lowercase, sdlpal is sensitive to case (but MS-DOS don't care)