n64 | experimental low-level n64 emulator | Emulator library
kandi X-RAY | n64 Summary
kandi X-RAY | n64 Summary
Experimental low-level N64 emulator written in C and a bit of C++. Still under heavy development and not ready for prime time. Compatibility is not high and performance is not great (yet.). The goals of this project are to create a low-level emulator with good compatibility, while learning a lot along the way.
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QUESTION
I'm currently trying to analyse the assembly of an old video game from N64. In order to do so, I'm using some N64 debugger to read and understand the underlying MIPS code.
In one of the calls I'm looking at, the prologue is defined as follows:
...ANSWER
Answered 2021-Apr-03 at 23:22One MIPS calling convention has the caller allocate stack memory space for all the parameters despite that the first 4 parameters (at least) are actually passed in registers.
This means that the called function can store $a0
, $a1
, $a2
, $a3
to the stack, expecting that those memory locations are available.
When a function calls another function, then as a caller it should also allocate those same 4 words of stack space. A function that calls another will need at least a minimal stack frame anyway, so having it allocate those 4 extra words is free in terms of prologue and epilogue.
Part of older calling conventions would tend to include support for varargs (variadic functions) that may not even be properly declared in C code as such. Allowing functions to store their parameters back to caller-allocated memory allows all the arguments to be flushed to memory and be contiguous, which is important for varargs functions. And doing it for all functions is overkill but simplifies some issues.
See https://courses.cs.washington.edu/courses/cse410/09sp/examples/MIPSCallingConventionsSummary.pdf for a picture of the stack frame that includes the 4 words for the register arguments.
In practice I believe that the reservation of 4 words for the callee to use in the caller's stack space is highly overrated, and as evidence would note that this has been dropped in RISC V, for example.
Some Intel systems use a red zone instead, which says that the system agrees not use your stack space within a certain small distance below the stack pointer (i.e. in the unallocated space of the stack). This makes sense on intel as the return address is automatically written to memory so doesn't need to be separately pushed like on MIPS, yet these systems also benefit from some pre-allocated stack space for simple functions to use without necessarily setting up a stack frame (i.e. the red zone).
QUESTION
I can't extract the ip from the register var after ping command from "shell" module.
ping.yml
...ANSWER
Answered 2021-Feb-25 at 16:29Your data structure in yaml looks like this
QUESTION
I am having trouble deleting specific rows from my dataframe. I first collected the rows I wanted to delete and stored them in a variable and tried to drop them from the df, but I'm running into trouble. Can someone guide me?
...ANSWER
Answered 2021-Feb-20 at 00:40This should work: df[~df["platform"].isin(n)] This will show the data frame masked where rows don't contain anything in list n
QUESTION
i have a dataframe of video game titles that were released across multiple platforms, along with their total sales. it looks like this:
...ANSWER
Answered 2021-Jan-17 at 21:49I think a histplot
would be a better way to visualize this problem if "ultimately, what i want to show is how the total sales of each title differs across platforms" This shows the frequency of games with standard deviations (grouped by game) in 0.1 bins. You can pass ddof=0
to not return NaN
values, but that will change the standard devation of all values.
QUESTION
I am using ansible telnet module to login to public route servers (ATT-route-server.ip.att.net) at http://www.routeservers.org/ and do a ping test. here is my script:
PART-A:
...ANSWER
Answered 2021-Jan-15 at 05:21Try this
QUESTION
I have a dataframe that consists of of video game titles on various platforms. it contains, among other values the name, critic's average score and user's average score. Many of them are missing scores for the user, critic and/or ESRB rating.
What i'd like to do is replace the missing rating, critic and user scores with those for the same game on a different platform (assuming they exist) i'm not quite sure how to approach this.(note - i don't want to drop the duplicate names, because they aren't truly duplicate rows)
here is a sample chunk of the dataframe (i've removed some unrelated columns to make it manageable):
...ANSWER
Answered 2021-Jan-14 at 02:26I'm pretty sure pandas.DataFrame.groupby
is what you need:
QUESTION
I'm trying to retrieve the selected option on a dynamic dependent dropdown list, but I only get None
using request.form.get
. My example generates a dropdown list in the image below:
The full code to generate the dropdown list is below, and it is based on an answer to this question.
...ANSWER
Answered 2020-Dec-23 at 02:58request.form.get
relies on HTML name
attribute, add name
attribute to each of your select
dropdowns, for example:
QUESTION
I want to start using tensorflow-gpu
, and I looked some stuff up, and found out that I need to ensure that I have both CUDA
and CUDNN
. So, I opened up the command prompt and ran the command nvidia-smi
to check my CUDA
version:
ANSWER
Answered 2020-Dec-13 at 01:22What nvidia-smi
shows is not the CUDA version that you have installed, but the maximum CUDA version that your driver supports.
CUDA 11.0 has been announced but not released yet (as of June 2nd 2020), so you should use CUDA 10.2 as it's the latest available version.
QUESTION
In my query I have one last obstacle I'm trying to overcome. My goal is to group products ("prod") by the specified category ("prodcat") and have a subtotal for each column's worth of data (such as JAN, FEB etc) at the end of each category.
Below I included a link to picture of the data. It shows each column/category associated (B/O, On Hand, Commit, [Tot Avail], Jan, MAR, APR, MAY, JUN, JUL, AUG, SEP, OCT, NOV AND DEC) and a new row called 'subtotal - prodcat'. As I said, The data associated with each prodcat needs to be subtotaled at the end of each category. As you will see in the picture, while I have the 'Subtotal - [prodcat]' showing up at the end of each prodcat as intended, each column's worth of data has NULL for that row. I removed the prod names and prodcat names but you should still clearly see the issue I'm facing.
Here is a link to an example output of what is currently happening
I can't seem to figure out what I'm doing wrong. I have tried using CASE WHEN, GROUPING SET, ROLLUP etc and has worked. For some reason, nothing I have tried thus far allows the [subtotals - prodcat] rows (and subtotal - Overall as well) to have actual values and not just NULL.
Below I went ahead and used SQL Fiddle to 're-create' what I'm trying to do. The code is the same outside of fictitious data. I've never used SQL Fiddle before so hopefully my write up is correct. The one thing I will say is that SQL Fiddle doesn't let you 'create views. However I use a 'view' in my process so I included the code for testing purposes below and to show EXACTLY the method I am using to get my results.
...ANSWER
Answered 2020-Oct-20 at 18:14I figured it out. It was just a simple sum I had to do. I was overcomplicating it. For any columns I wanted to have as part of the subtotal, I just need to use sum.
When doing that as I did below:
QUESTION
I am working on a research project where I am usingllvm to generate some assembly for a custom isa. I am feeding my assembly into a simulator for the time being. Part of my isa allows for 64 bit immediate values in an instruction encoding, I am using a modified version of the sparcv9 target with datalayout: E-m:e-i64:64-n64:64-S128. For some reason when I try to make an instruction for this, I am only getting the lower 32 bits of the value. When I expect to get "enter rd, 4629559679448514560" I instead get "enter, rd, 0" because the lower 32 bits are all 0 in this long.
...ANSWER
Answered 2020-Aug-04 at 09:18Probably the problem is elsewhere and you'd need to check how the immediate is printed down to assembly file? Steps to check:
- Check how the SDAG is create
- Check how instruction is selected and what is an imm in MI
- Check MI=>MC lowering
- Check assembly printing.
PS: You don't need PatLeaf here. Using just imm:$imm
should work, there is nothing to check.
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