(3d matrix mult is more flat)
#💽Programming Chat v2
spare quartz
rustic vine
spare quartz
so YOU'RE the person sending me files byte by byte over torrents
and making me have 1 byte/second speeds
spare quartz
<a:HAHAHAHAHA:1254902236258111555>
that's ada without any SIMD
just regular numerics
the one on the right is the ada library with SIMD
timid quartz
the one on the right is the ada library with SIMD
imagine needing a library for simd...
timid quartz
there's an experimental api in std::simd but also stable simd support for x86 and x86_64 in core::arch
timid quartz
invlpg &atp
spare quartz
`invlpg &atp`
In What Mode
timid quartz
protected mode with cpl 0
spare quartz
BOOOOOOOORRING
spare quartz
naw
my cpu would say something like
flags set [PROTECTED_MODE_ENABLE]
cause its that cool..
ugghhh intellij froze
timid quartz
u dont know what cpl is do you
timid quartz
privilege
spare quartz
but why would you expect me NOT to know what CPL is
timid quartz
flags set [PROTECTED_MODE_ENABLE]
cuz this isn't cpl
this is moving out of real mode
spare quartz
... do you not know what the initial cpl is after moving out of real
spare quartz
dont need it
timid quartz
ok have fun with that
spare quartz
no.
timid quartz
now ur programs have to worry about where they get loaded into memory
if u have 2 programs that wanna get loaded in the same spot whatcha gonna do
timid quartz
ur programs also have to worry about the actual physical ram size
whatcha gonna do if ur program can't fit
spare quartz
solution
dont
if your program is that dependent on pages maybe it doesnt deserve to run
have you thought about that..
timid quartz
maybe if ur os doesnt do its primary job of making convenient abstractions for userspace programs then it doesnt deserve to run
spare quartz
nah
timid quartz
I bet that PAGING_ENABLED flag is never gonna get set
spare quartz
not at the current stage
timid quartz
👎
spare quartz
i need proof my os runs first!!
timid quartz
paging ❤️
spare quartz
ah yes my favorite instruction Approximation to the Reciprocal Square Root of Packed Double PrecisionFloating-Point Values With Less Than 2^-28 Relative Error
timid quartz
ah yes my favorite instruction `Approximation to the Reciprocal Square Root of P...
fast inverse sqrt!!!!
spare quartz
ew no
timid quartz
spare quartz
and i REALLY hope these are never called
timid quartz
me when I try to run a vm on your cpu
timid quartz
ugh that syntax
match r {
0 => todo!("SGDT/VMCALL/VMLAUNCH/VMRESUME/VMXOFF"),
// ...
}
❤️
spare quartz
literally the same thing
timid quartz
except better
timid quartz
u have to type (r)
spare quartz
what about doing this
spare quartz
also hold this
[18:31:29;591/WARN [modloading-worker-0/Processor] flags set 0x0000000000000004 [PARITY_FLAG]
[18:31:29;592/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AE5 ( , ): 0xAC lodsb al, [si [0x0000000000008D10]]
[18:31:29;594/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AE6 ( , ): 0xE2 loop 0x00001F05 @ 0x-6
[18:31:29;597/WARN [modloading-worker-0/org.bread_experts_group.breadmod.BreadMod] kotlin.NotImplementedError: An operation is not implemented: ALPHA
drops
spare quartz
what
spare quartz
you're not a sql database idot.
timid quartz
that's what you think
timid quartz
DROP DATABASE whatever_atp_said;
[18:44:27;775/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AE6 ( , ): 0xE2 loop 0x00000001 @ 0x-6
[18:44:27;775/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AE8 ( , ): 0x89 mov [ebp+0x-10 [0x0007FFD4]], eax
[18:44:27;775/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AEB ( , ): 0x8B mov eax, [ebp+0x-4 [0x0007FFE0]]
[18:44:27;778/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AEE ( , ): 0x3B cmp [ebp+0x08 [0x0007FFEC]], eax
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AF1 ( , ): 0x72 jb 0x-750A
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AF3 ( , ): 0x89 mov esp, ebp
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AF5 ( , ): 0x5D pop ebp [0x0007FFF0]
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:0000000000008AF6 ( , ): 0xC3 ret 0x000089CC
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089CC ( , ): 0x59 pop ecx [0x0000BFC0]
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089CD ( , ): 0x5E pop esi [0x00100000]
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089CE ( , ): 0x8B mov edx, [0x00008218]
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089D4 ( , ): 0xBF mov edi, 0x00008327
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089D9 ( , ): 0xB9 mov ecx, 0x000082D2
[18:44:27;780/WARN [modloading-worker-0/Processor] 0x0000:00000000000089DE ( , ): 0xB8 mov eax, 0x000082C6
[18:44:27;781/WARN [modloading-worker-0/Processor] 0x0000:00000000000089E3 ( , ): 0xFF jmp esi
[18:44:27;784/WARN [modloading-worker-0/org.bread_experts_group.breadmod.BreadMod] kotlin.NotImplementedError: An operation is not implemented: Unrecognized opcode (0xAB)
sighhh
whhyyyyy
i wish there was a way to dump all teh instructions qemu runs
timid quartz
also i still need to figure out why memory at 0x100000 isnt being set
are you trying to set that memory before you enable protected mode and longjump
spare quartz
see how its operating on 32-bit regs here without 66 set
its in protected mode, and GDT is set earlier before the giant loop by QEMU
its just not initializing the memory @ 0x100000 which is where esi is set to return to
timid quartz
idk maybe fix it...
spare quartz
a breakpoint shows up until the return to esi that the VM is running almost parallel to QEMU
(with the only difference being QEMU has CS set to 8 for some reason)
ugh thats probably why
CS isn't offsetting 0x100000
spare quartz
im not allowed the modify the code running inside
this is QEMU
sorry
GRUB*
lemme just cause loop to crash again
see
in QEMU this would set CS to 0x8 but in my CPU it doesn't see a segment on ljmp for some reason
can we smash this guy with hammers
rustic vine
ok I applied 😅
wait
theres reactions in this channel now??
crazy work
🙏 the gods that be
rustic vine
also kinda random thought, but, linalg in java is terrible
spare quartz
spare quartz
also kinda random thought, but, linalg in java is terrible
is that what the library in the middle is for
java
spare quartz
no im asking you
spare quartz
oh
rustic vine
I think?
spare quartz
in java, at least, for mods, we usually just use JOML
rustic vine
in java, at least, for mods, we usually just use JOML
oh hm whats joml
I've only used ejml in Java tbh
spare quartz
is EJML supposed to be accurate/consistent?
rustic vine
I believe so
spare quartz
cause JOML might be faster as you dont need either for rendering
rustic vine
hm interesting
I mean to be completely honest I end up JNI'ing expensive math calls to cpp anyway
and by extension to eigen
spare quartz
JNI would be too expensive for us
rustic vine
ok expected
spare quartz
just writing
rustic vine
oh yea for sure
JNI is awesome
what
awful
not awesome
LOL
I was thinking awful and typed awesome somehow
spare quartz
and theres also the fact that like
for some awful reason a mod developer who made the backbone of the loader we work on made this new "union file system"
rustic vine
you end up with like a million double args to it for each field in each object, cause passing objects through ffi is even worse
timid quartz
in QEMU this would set CS to 0x8 but in my CPU it doesn't see a segment on ljmp ...
so is it that your CS thing in your cpu is messed up?
spare quartz
which just makes loading from fs/jars a really convoluted process
spare quartz
so is it that your CS thing in your cpu is messed up?
thats my theory
i need to find where QEMU does the ljmp though
rustic vine
which just makes loading from fs/jars a really convoluted process
classic java dev activity btw
spare quartz
cause the decoder on my end sees no segment
timid quartz
it should be grub doing the ljmp
spare quartz
it is
rustic vine
ljmp longjump?
timid quartz
yeah
spare quartz
im just saying QEMU is decoding it differently
rustic vine
I see
spare quartz
causing their CS to be set while mine isnt
timid quartz
ljmp longjump?
rustic vine
ohhhhh now I'm getting it
spare quartz
ljmp longjump?
(LJMP is just like a goto, but it sets additional things in the cpu after you set a GDT, for ex. where your code is)
rustic vine
ye
I just wasn't sure if LJMP was the instruction
or like if thats what yall meant
timid quartz
and if u havent enabled protected mode before the first ljmp u get sent into real mode
spare quartz
jmps all the way down
rustic vine
kinda related but do most compilers turn a if, elseif, else chain into a jump table? or does it depend on the code
spare quartz
Near jump, relative displacement - just an offset to IP
Far jump, absolute direct - directly sets CS/IP
Far jump, absolute indirect - directly sets IP thru a memory addr/register
timid quartz
kinda related but do most compilers turn a if, elseif, else chain into a jump ta...
mm I'd imagine so but I'm not sure
spare quartz
kinda related but do most compilers turn a if, elseif, else chain into a jump ta...
if they can/determine it to be more optimal
timid quartz
cause jump tables are way more efficient
rustic vine
yea thats what I thought too
I wasn't sure if theres any cases where branching is preferred
spare quartz
it just depends on the heuristics the compiler does
rustic vine
ye ok
timid quartz
I wasn't sure if theres any cases where branching is preferred
probably if you're branching a long distance
timid quartz
(the compilers can still ignore it)
spare quartz
:<
rustic vine
oh btw #embed is cool I only recently learned about it
timid quartz
#include <stdio.h>
int main(void) {
register int i = 1;
register int j = 2;
register int k = i + j;
printf("%d\n", k);
}
the compiler very well might just put them all in a memory address somewhere... :<
rustic vine
oh btw #embed is cool I only recently learned about it
tl;dr
#include <assert.h>
int main (int, char*[]) {
static const char sound_signature[] = {
#embed <sdk/jump.wav>
};
static_assert((sizeof(sound_signature) / sizeof(*sound_signature)) >= 4,
"There should be at least 4 elements in this array.");
// verify PCM WAV resource signature (at run-time)
assert(sound_signature[0] == 'R');
assert(sound_signature[1] == 'I');
assert(sound_signature[2] == 'F');
assert(sound_signature[3] == 'F');
return 0;
}```BREAK *0x8235
spare quartz
tl;dr
```c
#include <assert.h>
int main (int, char*[]) {
static const char ...
oh cool
timid quartz
tl;dr
```c
#include <assert.h>
int main (int, char*[]) {
static const char ...
just make ur own file format -> C binary array converter and #include it
spare quartz
timid quartz
timid quartz
spare quartz
istg if this is another disconnect between Operand Size and Address Size im gonna kill someone
spare quartz
not in the instructions ive seen so far
but a 32-bit mod r/m can reference an SIB byte after it
making a one byte r/m into a 2 byte one
if that counts
and instructions themselves can be coded using a modr/m or the 0x0F prefix
0x0FEA /4
0xEA is a group instruction whose behavior depends on if the (reg) part of the modrm after it is /4
rustic vine
the culprit
spare quartz
0x0FEA /4
0xEA is a group instruction whose behavior depends on if the (reg) par...
this behavior can be useful like so
spare quartz
math.lerp was added
whats math.map
does it take a list of values and transform them to another list
rustic vine
does it take a list of values and transform them to another list
maps value from 1 range to another
its super nice for converting fixed range floats to shorts or whatever
spare quartz
oh yeah we have something like that in kotlin
rustic vine
ye
spare quartz
super useful sometimes, but ours is applicable to every type
spare quartz
:<
rustic vine
also I find it hilarious that lua made all these functions callable with strings that get coerced into numbers
so now new functions follow that standard too
but if you do that you drop like all optimizations
lol
timid quartz
maps value from 1 range to another
erm... (((OldValue - OldMin) * NewRange) / OldRange) + NewMin
rustic vine
erm... `(((OldValue - OldMin) * NewRange) / OldRange) + NewMin`
yea but this would end up everywhere
timid quartz
ok just...make a function
rustic vine
now I need it in a diff file
timid quartz
inline int map_to_pwm(int val) {
/**
* OldRange = (OldMax - OldMin) = 100 - (-100) = 200
* NewRange = (NewMax - NewMin) 255 - 0 = 255
*
* NewValue = (((OldValue - OldMin) * NewRange) / OldRange) + NewMin
* = (((val - (-100)) * 255) / 200) + 0
*/
return std::round((((val - (-100.0)) * 255) / 200));
}
yeah ik
but now math.map
😃
and it gets fastcalled
yay
nvm it don't
I lied
too many args
spare quartz
```cpp
inline int map_to_pwm(int val) {
/**
* OldRange = (OldMax - Old...
ermmm..
what thou sigma⁉️
timid quartz
ermmm..
well
my code technically maps a value from one range to another
specifically -100 to 100 to 0 to 255
spare quartz
do you know how to view the machine code in gdb
timid quartz
I don't think u can view the binary
spare quartz
worst debugger ever
timid quartz
you could uh
try dumping the memory in hex
x/<integer number of words>w <memory address>
@spare quartz
spare quartz
bnasck
spare quartz
no i was bleedinmg ..
0x82efea66
BIOS DISC CPY 0x00000000002C1800 -> 0x00000000002C9800 @ 0x0000000000008000
0x82e0
😭
ugh thats why
i think
timid quartz
it even gives the wrong answer 😭
rustic vine
https://fixupx.com/colin_fraser/status/1893776740763271394/photo/1
LOL
timid quartz
What’s the solution?
spare quartz
i have to go back to how im determining `operationMode`
cs.readSegmentDescriptor().flags.DB
this determines if something is actually in 32/16 bit
also 64 bit
but we can ignore that
timid quartz
128-bit :3
spare quartz
not real.
timid quartz
You’re right it’s not 16-bit so it’s not real
timid quartz
32-bit is imaginary
timid quartz
TODO("E@#$")
spare quartz
What’s the solution?
this should theoretically be it
CS is set...
still is jumping to nowhere though..
For legacy mode, Load byte at address DS:(E)SI into AL. For 64-bit mode load byte at address (R)SI into AL.
proud creek
Funny words
timid quartz
rep stos
spare quartz
F3 AA REP STOS m8 ZO Valid Valid Fill (E)CX bytes at ES:[(E)DI] with AL.
timid quartz
lmfao is this code british
"oi, REP STOS m8"
finally I have uninstalled mysql from my mac 😌
timid quartz
I had to install it from the stupid https://dev.mysql.com/downloads/ for a class last semester
and I couldn't work out how to uninstall it
but I did
port 3306 is free again
spare quartz
oooooookay my branches are fucked
spare quartz
cpu branches
timid quartz
oof
rustic vine
who uses branches anymore
timid quartz
just do the computation and load eip 
rustic vine
single commit on main, keep amending it
spare quartz
just do the computation and load eip <:Clueless:1164788576286953514>
erm what the sigma
spare quartz
beats stitching histories when you accidentally push a key 👍
rustic vine
its ok guys bitbucket got draft prs recently
I promise its good
guys use bitbucket its awesome and has no flaws
timid quartz
beats stitching histories when you accidentally push a key 👍
that's when you just gotta delete the repo on gh and rm -rf .git on your local repo
spare quartz
NO 😭
rustic vine
how does that tech work btw
spare quartz
git reset --soft HEAD~3
git commit -am "my bad guys i fucked up the repo"
git push --force
so good
rustic vine
how does that tech work btw
what did I just say
I didn't even specify what tech
cooked
I meant like I've heard how if you push your discord api keys for a bot to gh you'll get an email or a notif about it being public
I forgot which party the email/notif comes from
was it gh or discord
must be discord right
how does that work?
spare quartz
probably just has a webhook for whenever you add a connection
rustic vine
a connection?
timid quartz
sigma
spare quartz
or something higher up agreed upon at the company-company level
spare quartz
a connection?
rustic vine
oh wait, its through that?
timid quartz
I forgot which party the email/notif comes from
you should push a key to gh and test 
spare quartz
i dont get alerted though since the repo i pushed a key on was private
rustic vine
you should push a key to gh and test <:ecstatic:1209574108397047839>
NOOOOO
wait thats genius
timid quartz
LOL
spare quartz
oh wait, its through *that*?
again probably
thats how i would do it
discord might have funny relations with gh though letting them do something more direct
timid quartz
it's probably github
rustic vine
🥲
timid quartz
github probably keeps track of your connection with discord
scans your repos for keys
and then does soemthign with that
rustic vine
but how does it know something is a key?
spare quartz
regex
timid quartz
keys have a general form to them
spare quartz
🧌
timid quartz
yeah
rustic vine
oh huh
timid quartz
discord keys look a certain way
spare quartz
or it just scans through the bots you own
timid quartz
discord will warn you too if you try to paste somethign that looks like a key
spare quartz
wait no
timid quartz
or it just scans through the bots you own
I don't think you give it access to do that
spare quartz
discord resets keys no matter who uploads it
theres actually a repo dedicated to doing that
rustic vine
wha
spare quartz
i need to find it
some guy operates a repo that scans other git platforms and adds it to a TXT file
timid quartz
ok atp so
spare quartz
and when discord/gh sees it, causes a reset of the added key
timid quartz
I grabbed a key from one of my bots
and changed it a bit
discord still warned me that it might be a key
so it's gotta be regex
spare quartz
probably
spare quartz
some guy operates a repo that scans other git platforms and adds it to a TXT fil...
cant find the repo i was trying to find exactly but
close one
spare quartz
no im kididing
rustic vine
sorry im uninformed lol
spare quartz
i dunno if github would log that as activity though
rustic vine
reverse engineered it
timid quartz
aaaaaaaaaaaaaaaaaaaaaaaaaa.a-a_aa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
this triggers the regex
rustic vine
you just sent it?
rustic vine
oh
spare quartz
this triggers the regex
oh my god watch it be like, a run-on counter with a few delimiters
instead of regex
timid quartz
real
spare quartz
aaaaaaaaaaaaaaaaaaaaaaaaaa.a-a_aa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
timid quartz
aaaaaaaaaaaaaaaaa.a-a_aa.aaaaaaaaaaaaaaaaaaaaa
spare quartz
thats funny af
rustic vine
side topic but honestly discord search is impressive
its speedy
theres prob papers about search at scale
spare quartz
i never really understood how those searches worked tbh
i know theres like indexing that windows does for example but not much beyond that
rustic vine
yea, but like searching servers with hundreds of millions of messages is still
fast?
maybe they're cutting corners somewhere but it seems solid
rustic vine
like, woah
rustic vine
(it don't)
timid quartz
aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa.a-a_aa.aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa
lol
it flagged that
spare quartz
im pretty sure it encodes your ID, email
rustic vine
oh gotcha
spare quartz
but not much beyond that
rustic vine
thats cool
spare quartz
those are the delimiters, i guess
timid quartz
ur a delimiter.
spare quartz
you're a crab
timid quartz
ur a corpse
rustic vine
whats ada's spirit animal
spare quartz
8AF1
timid quartz
your mascot is dead
spare quartz
whats ada's spirit animal
a bird
spare quartz
its a hummingbird
timid quartz
whats ada's spirit animal
a dead woman named ada lovelace
great contributions to cs
but shes dead
spare quartz
kys!!!
rustic vine
but shes dead
hm you can say that about a lot of people that are dead
good contributions all around
spare quartz
yeah shes touted as the first programmer
rustic vine
oh wth it was actually 1800s
spare quartz
which means WE... have a programmer with 200 years of experience
rustic vine
wait they've been coooking for like forever
spare quartz
all of your rustlets are babies..
timid quartz
which means WE... have a programmer with 200 years of experience
a dead programmer*
spare quartz
no....
timid quartz
can you run ada on it
spare quartz
yes
spare quartz
you know why...
timid quartz
why
spare quartz
Augusta Ada King, Countess of Lovelace (née Byron; 10 December 1815 – 27 November 1852), also known as Ada Lovelace, was an English mathematician and writer chiefly known for her work on Charles Babbage's proposed mechanical general-purpose computer, the **Analytical Engine. **
:3
:3
spare quartz
yes it is
timid quartz
that's ada running it
spare quartz
meow
timid quartz
timid quartz
Rule #1 of programming
Ada always loses
Rust beats Ada, Ada beats C, C beats Rust
timid quartz
:3
lavish dove
State of the art lmao
spare quartz
QEMU is such a useful tool
also this too
nerd...
MAN
i really need to watch what i repost on twitter
i dont want some femboy furry on this guys feed 😭
proud creek
Bro what 😭
spare quartz
Bro what 😭
whenever you get a webp file... remember him!!
proud creek
!!!
rustic vine
working on it
rustic vine
hey thats why I said working on it
spare quartz
we're removing your funding.
rustic vine
we're removing your funding.
disaster
I just put https://github.com/HarryXChen3/LuauSandbox in and that debugger thing I was working on as examples
pray its goated enough
rustic vine
I just put https://github.com/HarryXChen3/LuauSandbox in and that debugger thing...
that debugger thing
heres how thats turning out btw
https://media.discordapp.net/attachments/1343768167075414168/1343768167356305501/401766971-3b43c24a-6c9a-42dc-a2de-4ada2c42f7d8.png?ex=67be7921&is=67bd27a1&hm=6360035853ea263b7afe0ec6bebd02b1dc94507a8255e0fa9653ba72fe762f39&=&format=webp&quality=lossless&width=1128&height=670
spare quartz
thatll be farrrr beyond whatever they're expecting honestly
spare quartz
nah im kidding
rustic vine
EXTERNAL LIBRARIES⁉️
I get that you're a hater but I think thats only cause ada has no libraries for you to use (there aren't any other users)
spare quartz
not true ...
rustic vine
> that debugger thing
heres how thats turning out btw
https://media.discordapp.n...
I think it looks sick
thanks imgui!
lavish dove
https://media.discordapp.net/attachments/1170429636505772103/1334294534481514517...
imgui in roblox is sick
imgui in normal computing is complex for some reason
"simple" "not bloat" (complex, bloat)
rustic vine
thats not physicist
win
rustic vine
imgui in roblox is sick
yep! absolutely love the look and feel
rustic vine
imgui in normal computing is complex for some reason
wdym
timid quartz
I get that you're a hater but I think thats only cause ada has no libraries for ...
101% factual
spare quartz
lies..
yet another instruction format change
oops
hat could've been bad..
totally normal class names im making
RegisterMemorySelectorSingleOperandGroupInstruction
mrmd sounds like a drug..
has science gone too far?
spare quartz
the decoder grows stronger everyday.
you cant tell me its not beautiful
the entire decoding annex is so big
timid quartz
you cant tell me its not beautiful
It’s Kotlin, ergo, not beautiful
(joking)
In other news I’ve fucked my NixOS dual-boot on my MacBook by trying to triple-boot with Fedora
so uh gotta figure that out tomorrow
spare quartz
(joking)
but look at it branch,,
i THINK this perfectly encodes 0F 22 /r MOV CR0–CR7, r32
spare quartz
In other news I’ve fucked my NixOS dual-boot on my MacBook by trying to triple-b...
how
spare quartz
lyric mesa
omg... sylveon!!! 
pallid loom
i dont want some femboy furry on this guys feed 😭
wouldn't be the first one to get it
rustic vine
In other news I’ve fucked my NixOS dual-boot on my MacBook by trying to triple-b...
Triple boot?? I think i found the problem
rustic vine
I know I know
Did you get it working? 🙏
rustic vine
Also congrats on physicist
Thanks! I thought I'd just spend 20 mins or so on it and see if that'd work
timid quartz
Did you get it working? 🙏
Trying
spare quartz
002939
timid quartz
Good luck triple boot sounds scary
Its not too bad its just that Fedora installed grub which messed some stuff up and then NixOS didn’t set up stuff quite right either
I’m basically having to reinstall NixOS with grub set from the get-go
But triple boot isn’t too bad you just need to set one bootloader that’s capable of finding other OSes, like grub using os-prober
rustic vine
I’m basically having to reinstall NixOS with grub set from the get-go
oh ok that doesn't sound too difficult
rustic vine
But triple boot isn’t too bad you just need to set one bootloader that’s capable...
yea, maybe not, it just sounds scary - realistically, are you really using all 3? and can it really not be solved by using wsl/a vm?
oh its a macbook ain't it, no wsl then
a vm maybe?
spare quartz
bring back bootcamp apple..
timid quartz
yea, maybe not, it just sounds scary - realistically, are you really using all 3...
One use case could probably be done by a VM, but for another I really don’t wanna try to figure out USB passthrough
rustic vine
what are the use cases?
timid quartz
I normally run NixOS but I decided to install Fedora because I want to try to program a FPGA with Quartus Prime directly from my laptop rather than having to use another PC
And NixOS is weird so I wanna see if its even possible from a “normal” distro
timid quartz
I wish but we have to use Quartus Prime for this class
spare quartz
i think its just intel vivado
timid quartz
Dm
spare quartz
this is like the fourth revision of all instructions 💔
i dunno how to top this though
spare quartz
*org.bread_experts_group.breadmod.client.tool_gun.ToolGunScreen and org.bread_experts_group.breadmod.client.tool_gun.ToolGunScreen$ScreenTabs disagree on InnerClasses attribute *
thats a new error..
spare quartz
timid quartz
Ok well
I basically just wiped NixOS and put Fedora on it instead
Kinda gave up on the whole triple boot lol
spare quartz
im going to strangle a computer
timid quartz
@rustic vine good news, I did not do this to myself in vain
Quartus Prime CAN program the FPGA from Fedora
spare quartz
hooray
spare quartz
RegisterMemoryImmediateOperatingLengthDoubleOperandInstruction...
rustic vine
Quartus Prime CAN program the FPGA from Fedora
neat, how does it run? stable and good perf?
rustic vine
`RegisterMemoryImmediateOperatingLengthDoubleOperandInstruction`...
forgot StrategyFactory
spare quartz
forgot StrategyFactory
x86..
timid quartz
neat, how does it run? stable and good perf?
Pretty fine but it has issues with suspend as I expected
I might try to get Quartus working with usb passthrough
rustic vine
suspend? like to sleep/hibernate?
spare quartz
do they still have the t2 chip (on newer macs)
timid quartz
do they still have the t2 chip (on newer macs)
I have a 2020 Intel MacBook
Before M1
spare quartz
thats what im wondering
timid quartz
Well they don’t make Intel MacBooks anymore
timid quartz
The M1 has its own stuff idk
spare quartz
do they just not have t2 chips
timid quartz
I’m not sure
spare quartz
oh okay
this new instruction format is a lot.. better
already back up to 73 opcodes
scpsl time
rustic vine
It’s plagued Linux on T2 Macs since Sonoma
oh gotcha, thats rough
spare quartz
snow oak
@spare quartz
pastel tinsel
😭
spare quartz
<@516049910622191626>
This is really simple to do
rustic vine
spare quartz
Okay… but why
rustic vine
Okay… but why
webdevs will webdev
spare quartz
Ts poisoning
spare quartz
https://www.youtube.com/watch?v=0mCsluv5FXA
This is eerily similar to how a JVM looks
Ohhh
Cause it’s a WASM implementation
good on him for simulating addition/carrying though
this is what i do
proud creek
Lmao
spare quartz
spare quartz
when you accidentally push MS-DOS 6.22 to the BM erpo 😭
rustic vine
https://fixupx.com/stupidtechtakes/status/1894544026126487583/photo/1
from scratch vs in scratch
lavish dove
wtf is scas
lavish dove
oh its just memcmp
lavish dove
cool
spare quartz
hopefully this lets us actually use BIOS int 0x10
spare quartz
IT OWRKS
spare quartz
YOOOOOOOOOOOOOOOOOOOO
heres it without the speed limiter and with correct keyboard recognization
i think its pretty decent
spare quartz
But…neoforge…..
the CPU is independent of minecraft
org.bread_experts_group.breadmod.experimental.computer will work virtually anywhere
timid quartz
But…..neoforge…..
timid quartz
But………neoforge…………..
timid quartz
But…………….neoforge……………………….
lavish dove
wait so this is what you were doing!?!??
spare quartz
wdym
spare quartz
yes 😭 what else could i have possibly beend oing
lavish dove
idfk'
spare quartz
60% done with the first half..
overall the instructions look like they're doing well against QEMU
only problem MS-DOS wise is si not being set right due to QEMU having a prepped IVT
lavish dove
damn
spare quartz
ImmediateSigned8SingleOperandOperatingLengthDependentInstruction
these interface names are crazy
wraith scarab
overall the instructions look like they're doing well against QEMU
qemu sounding like temu 2
spare quartz
holy shit i love being able to seek for memory addresses in this cpu
makes undercovering instruction bugs so much easier
wraith scarab
wat it would just be full of furry art
spare quartz
wat it would just be full of furry art
wraith scarab
bread
rustic vine
Sick! That's awesome
full berry
do we fw this script so far
rustic vine
do we fw this script so far
do you want me to be picky
rustic vine
get rid of the warns and prints unless they are for debugging
define the function in 1 of the 2 ways
local module = {}
function module.func(args)
end
return module
-- or
local function func(args)
end
return table.freeze({
func = func
})```everything else actually looks ok
full berry
define the function in 1 of the 2 ways
```lua
local module = {}
function module...
should i get rid of the module.Functions table or keep it in there
full berry
alright
function module.equip(character: Model)
local PossibleTool = character:FindFirstChildOfClass("Tool")
if PossibleTool then
local config = PossibleTool:FindFirstChildOfClass("Configuration")
if config then
local RealTool = PossibleTool
sounds = { -- i intend on this staying as a global
core_folder = RealTool:FindFirstChild("Sounds"),
equip_sfx = RealTool:FindFirstChild("Sounds").Equip,
reload_sfx = RealTool:FindFirstChild("Sounds").Reload,
}
-- debugging goes here now :)
-- back to the show
if sounds.equip_sfx then sounds.equip_sfx:Play() end
print("Gun equipped")
end
end
end
like this?
rustic vine
lgtm
you can make the if config then a guard statement
if config then
-- code
end
-- can be change into
if not config then
return
end
-- code```it reduces nesting
especially when the code inside is long
same with PossibleTool tbh
also try to keep consistent casing
will come back to help you
rustic vine
don't use globals
full berry
oh ok
rustic vine
ye
they're bad in quite a few ways
I can explain in more detail the motivations for what I've said a little later
spare quartz
what if... lua had reflection/introspection...
rustic vine
NO!
spare quartz
hehehea
full berry
NO!
and one question
where should i store the gun state (ex. is the gun equipped, firing, reloading, etc)
rustic vine
a table works
full berry
within this module?
rustic vine
local gun = {
equipped = false,
firing = false,
reloading = false
}```well
depends on how you want to structure your gun
you can do oop style if you wanted
full berry
ehhh
rustic vine
I would obviously advocate for ecs
full berry
i'm not that into oop
rustic vine
but maybe thats not something you wanna get into (ecs)
rustic vine
i'm not that into oop
well, a table with functions and properties in it is essentially oop
don't need to bother with any inheritance or anything
full berry
well, a table with functions and properties in it is essentially oop
oh so
rustic vine
that stuff is yuck
spare quartz
that stuff is yuck
:<
rustic vine
metatables are kinda yuck too
rustic vine
its literally just
local function A()
end
local function B()
end
local function C()
end
return function(args)
return {
A = A,
B = B,
C = C
}
end
the function I return from the module is the oop "constructor"
full berry
what if i make a type called Gun with the properties/available states in there, then i create an object with that type
rustic vine
oh yea, at the top of that I declare the type of the "object" yea
you don't need to do that unless you want to use the typechecker (I would totally recommend that too)
rustic vine
sure, thats fine
full berry
alright
rustic vine
methods take a self argument, which isn't anything special, just a convention
when you call a function using table:func() it implicitly passes the table you called it with to the first argument
so something like circularbuffer:clear() implicitly passes circularbuffer to the clear function
you can also always do circularbuffer.clear(circularbuffer)
but thats a lot of duplication
which is why a:b() exists
spare quartz
what if i make a type called `Gun` with the properties/available states in there...
should be noted that the type itself doesn't actually exist at runtime in the object (compared to OOP languages which store a tag/form of type ID to an object)
spare quartz
*they actually do, but you prob don't care
what are they used for at runtime
rustic vine
optimizations
and they can affect varargs and multret behavior (kinda, it can look like they are)
spare quartz
should be noted that the type itself doesn't actually exist at runtime in the ob...
oh i mean it in how other oop languages use tags; like determining how to dispatch a function
rustic vine
no yea ik
I was just adding on
they don't exist and don't affect it
with caveats
spare quartz
it better not cause any o0/1 differenecs ... grrr.. .
rustic vine
it better not cause any o0/1 differenecs ... grrr.. .
hm wdym
theres no guarantee optimization levels don't affect behavior
the whole point of them is to affect behavior
spare quartz
yeah but theres an amount of a programs behavior that we expect to remain constant throughout each level
and any differences there is evil...
full berry
Gun.Handle = PossibleTool.PrimaryPart
Gun.Name = PossibleTool.Name
Gun.Ammo = config.Ammo
Gun.MaxAmmo = config.MaxAmmo
Gun.IsAutomatic = config.IsAutomatic -- this is 100% not the best way to do it but i'm a bit lazy
do we think this is too, how do i call it, spammy?
oh lord the formatting
rustic vine
local gun = {
Handle = PrimaryPart
-- etc...
}```thanks
rustic vine
also the typename
fwiw
this is 100% not the best way to do it but i'm a bit lazy
that prob is the best way to do it
yes you could maybe do it with a loop
but I don't think thats maintainable
and not typechecked!
spare quartz
only if config gets really big is where i'd say just iterate over config
spare quartz
you could enforce field semantics with metatables, but only if you really, really care for the safety
spare quartz
another day another java.util.NoSuchElementException: Key 4 is missing in the map.
man
rustic vine
you *could* enforce field semantics with metatables, but only if you really, rea...
don't!
full berry
local Types = require(Modules.Types)
local Gun: Types.Gun = nil
Gun = {
Handle = PossibleTool.PrimaryPart,
Name = PossibleTool.Name,
Ammo = config.Ammo,
MaxAmmo = config.MaxAmmo,
IsAutomatic = config.IsAutomatic,
Reloading = false
}
this is just a compiled snippet
rustic vine
- they're slow
- they don't typecheck well
- just enforce it with typechecking
spare quartz
don't!
the only time i found it useful to enforce such semantics was during the jvm 😭
rustic vine
could've prob done the same with typechecking at compile time
not compile, typecheck time?
spare quartz
stack/object fields aren't determinable that way by nature
since they have to be dynamically read and loaded
rustic vine
```lua
local Types = require(Modules.Types)
local Gun: Types.Gun = nil
Gun = {
...
also why not just, put the type in the same file?
full berry
true
rustic vine
that feels more convenient than having to require a separate file
full berry
so in that case, i don't need the export?
rustic vine
you prob should?
full berry
oh alright
rustic vine
export type Gun = {
}
local function shoot()
end
return function()
return {
shoot = shoot
}
end
local gun = require(path.to.gun)
local a_gun: gun.Gun = gun()```lol what
spare quartz
nothing im just rambling to myself
rustic vine
classic
spare quartz
will probably be fine
rustic vine
lol I had a bug in my circular buffer impl that I only found yesterday using it
it you tried to iter it when it was empty it would iter the full capacity of the buffer and provide N nils
rustic vine
so its a circular buffer right
spare quartz
yeah
rustic vine
it tracks head and tail indexes
so when its empty
head = 1, tail = 1 (indexes start at 1, bruh)
when its full,
head = 1, tail = 1
spare quartz
ohh
rustic vine
yes?
ok so, I wasn't checking the size
I made a special case for when its full (head = 1, tail = 1)
because I can't iterate from 1 to 1
the special case was to iterate from head to capacity
but I forgot empty is also 1, 1
so now I check size == capacity AND 1, 1
and now its covered by a test!
spare quartz
CAPACITY!!! N!!! CASE!!! TEST!!!
rustic vine
true
spare quartz
stop writing your progarms to yell at peopel :<
rustic vine
lol
full berry
rustic vine
I think it looks nice
spare quartz
PrimaryPart is optional on Models
full berry
swapping it between Part and BasePart just gives the same error
spare quartz
check if it exists
rustic vine
basepart? could not be converted to basepart
full berry
PrimaryPart is optional on Models
alright ty
spare quartz
or assert it
rustic vine
so you have an optional basepart
and you expect a non-optional
assert that it exists or cast it
full berry
yeah bc models don't need a PrimaryPart
spare quartz
mwahahaha
rustic vine
also u should use rojo and vsc 😈
spare quartz
don't listen to this guy he's off his meds
full berry
so i should use the assert() function for this?
rustic vine
ye
spare quartz
if you're certain a PrimaryPart should exist on the model
spare quartz
assert(condition, reason?)
rustic vine
I beat you this time
spare quartz
damn
spare quartz
ughhh i hate floppies
can't continue work on ms-dos cause it uses stupid cylinder-head-sector reading
spare quartz
upload as file