local function a(b)
if b then
print("b exists!")
end
end
-- can also be written as
local function a(b)
if not b then
return
end
print("b exists!")
end
#💽Programming Chat v2
rustic vine
now for the specific example I provided, its not worth it to rewrite it that way
but say for
local function a(b, c, d, e)
if b then
print("b exists!")
if c then
print("c exists!")
if d then
print("d exists!")
end
end
end
end
-- can also be written as
local function a(b)
if not b then
return
end
print("b exists!")
if not c then
return
end
print("c exists!")
if not d then
return
end
print("d exists!")
end```writting it like the latter reduces nesting
and makes it easier to read
rustic vine
get rid of the warns and prints unless they are for debugging
this is a personal preference, but I see a lot of people new to code they like to put warns and prints saying "X code is starting", "Y code is finished", "Z code is running", and personally I just think it clutters the output
define the function in 1 of the 2 ways
defining it usingfunction module.func()is just cleaner than putting it into the table directly
defining it as alocal function func()opens you up to some optimizations in the same file (like function inlining), and I think it looks nicer personally
simple is good complex is bad
I think everyone who writes code should read https://grugbrain.dev/, it's awesome advice and kinda funny too
spare quartz
53 248 - LOAD RBA
0x0000F600 - WHAT IT WANTS US TO LAOD
0x0000F600 - 53 248 = 9728
9728/512 = 19
2 sides * 80 tracks * 18 sectors
load: cyl # 0, sector # 1, head # 1
(load rba * logical block size) + (head# * 18) + (sector# - 1)
this math SUCKS
but it should hopefully work
spare quartz
`CHOMPY FUCKING CLUTCHED THAT SHIT!!!
spare quartz
tomorrow is the day i actually implement interrupts... or, well, today
but im going to sleep now
full berry
local GunObject: Gun = nil
GunObject = {
Name = PossibleTool.Name,
Handle = PossibleTool.PrimaryPart,
Ammo = config.Ammo.Value,
MaxAmmo = config.MaxAmmo.Value,
Reloading = false,
IsAutomatic = config.IsAutomatic.Value,
}
function module.Unequip(character: Model)
print("Unequipping gun")
local Player = Players:GetPlayerFromCharacter(character)
if Player and Player.PlayerGui then
local GUI = Player.PlayerGui:FindFirstChild("GunUI")
if GUI then
GUI.Container.WeaponName.Text = "No Weapon"
GUI.Container.Ammo.Text = "0 / 0"
GUI.Container.FireMode.Text = "N/A"
end
end
end
This is just a base idea of what I wanted to do, but how would I "reset" the GunObject
because when I try to do that,
rustic vine
```lua
local GunObject: Gun = nil
GunObject = {
Name = Possible...
A few changes that I wanted to mention yesterday but didn't
The way you've got this setup is kinda weird
Typically what I'd expect is a function that "makes" or "constructs" a gun "object", then methods on that "object" for actions, stuff like equip, fire, reload, etc...
You seem to have a singleton atm and I'm not sure that's really what you want
I.e., this is what I'd expect to see
local function fire(self: Gun)
end
return function()
return {
fire = fire
}
end
And usage would look like
local gun = require(path.to.gun)
local a_gun = gun()
a_gun:fire()```okay its time to add interrupts
@lavish dove i rertact any statements ive made about bios
csm is pretty cool
spare quartz
spare quartz
rustic vine
oh no
timid quartz
Urghhhhhhhhh how do I make myself do work
rustic vine
start progamming
expert advice
I haven't heard this before
on the topic of advice im gonna shill https://grugbrain.dev/
definitely worth a read!
rustic vine
LOL
spare quartz
why do the people here set the ac to 79 F!!!!!!
rustic vine
why do the people here set the ac to 79 F!!!!!!
they're weird
73-75 is the comfortable range
spare quartz
its not even that hot outside
whenever i set it to 72 F i get told off for "wasting energy"
my computer is on 24/7 my room will become 85 F if i dont turni t down 😭
rustic vine
3 mph wind? take cover
timid quartz
my computer is on 24/7 my room will become 85 F if i dont turni t down 😭
sounds like u need to vent ur pc to the outdoors
or just like idk open ur windows
spare quartz
that is very hot!!!
and that isnt a permanent solution since in a few months itll become 110 f
timid quartz
bro u live in texas it gets to like 100f+
spare quartz
okay and
i've lived in literally every other corner of the country, im not used to the heat anyways :Sob:
timid quartz
78f aint nothin
rustic vine
bro u live in texas it gets to like 100f+
send in the 2nd winter storm
spare quartz
send in the 2nd winter storm
pls do
also send in 5 tons of rain
i will literally bring rain prayers back
rustic vine
how did that cripple your electricity grid
oh cause yall aren't connected to the rest of the nation
right
spare quartz
ERCOT connects to other grids for import/export through certain DC lines
rustic vine
so how did they fumble
spare quartz
generally though we're mostly self sufficient
a grid failure somewhere probably just took the whole thing down as they do
rustic vine
as they do
spare quartz
yes
tbf
i live right next to a gas plant and my power didnt drop
neither did our water supplies
i cant speak for anyone else though
rustic vine
so it does have its benefits
spare quartz
yeah
afaik it also doesn't cause people to get cancer
since it's got the latest safety stuff built in and they shut down their coal gens years ago
we also live near some solar/wind farms
rustic vine
gonna stream working on some of that imgui debugger thing for hopefully a little bit
rustic vine
BIOS structure/IVT init
whats ivt
spare quartz
interrupt vector table
like if a clock on the motherboard makes a tick, or a keyboard is pressed, in real mode an interrupt vector is looked up and jumped to the reference in memory
rustic vine
oh hm
spare quartz
the BIOS at startup on PCs makes some of these vectors either do nothing or jump to it's own hook/routine
so you can load your os into memory; when you're in protected mode these hooks are disabled, and the IVT no longer exists, an* IDT (protected mode ver of the ivt) is loaded by your os
some oses of yesteryear like MS-DOS redefined parts of the IVT as a form of syscall
rustic vine
cool
rustic vine
gonna stream working on some of that imgui debugger thing for hopefully a little...
nvm I lied I have to do something else lol
lavish dove
<@364514619232092170> i rertact any statements ive made about bios
heh
spare quartz
lavish dove
😭
pallid loom
quick q
i've got a project i'm working on
backend made in express & stuff
what would be the reccomended path to frontend to someone that doesn't do frontend
currently thinking react + material ui lib
i just need something that has a component lib i can work with
and yes it has to be web based
spare quartz
i just need something that has a component lib i can work with
react/material sounds fine
pallid loom
and yes it has to be web based
(since it has to run on shitty chinese smart boards)
spare quartz
pallid loom
what
pallid loom
do i have too many folders
genuine question
pallid loom
if your server uses directory based routing thats just how it goes
i just thought it would be more organised this way
each .js apart from the ones in util
rustic vine
Javascript? In this channel??
rustic vine
Oh I thought you got YOUR account banned
spare quartz
😭
rustic vine
Also, what does script.Parent[1] do? Does it coerce the 1 to a string then index a sibling of the script called 1??
spare quartz
it was some account that was creating a ton of bloat issues to advertise stuff/executables
rustic vine
it was some account that was creating a ton of bloat issues to advertise stuff/e...
Classic
rustic vine
Also, what does script.Parent[1] do? Does it coerce the 1 to a string then index...
I tried to get an answer in general but got hated on instead loool
spare quartz
Also, what does script.Parent[1] do? Does it coerce the 1 to a string then index...
yknow what im not actually sure. im pretty sure it'll just give you a warning/error (pair)
rustic vine
yknow what im not actually sure. im pretty sure it'll just give you a warning/er...
See I thought so too. If it coerces into a string that'd be cursed
Oh no. It does.
😭
rustic vine
LOL
Doing that coerce probably makes it fallback to slow __index call
Instead of fast pathing it
timid quartz
what would be the reccomended path to frontend to someone that doesn't do fronte...
Do the frontend yourself otherwise you won’t learn
spare quartz
ok me
pallid loom
Do the frontend yourself otherwise you won’t learn
I don't plan on doing webdev
rustic vine
Win!
pallid loom
I do not want to become 45 until I center a div properly
spare quartz
WORST CHOICE YOULL EVER MAKE
thx for reminding me about a stupid post i saw earlier today
rustic vine
Let them have their fantasies
spare quartz
i can't if they already exist though
web 1.0 still exists: it's called just writing an html file yourself and using http/1.1 😭
spare quartz
or hell http/0.9 since thats supported
rustic vine
I said so
spare quartz
go back to your luau cage
rustic vine
go back to your luau cage
Stop i write other language too
rustic vine
I DONT USE LUA!
rustic vine
same thing!
You'd get banned from that one server if you said this
spare quartz
okay isnt that server also full of rust users though
rustic vine
Yea..
rustic vine
No you gotta start shilling it
spare quartz
rustic vine
😨
hey random thought. if you're ever bored, start lowballing people on facebook marketplace
spare quartz
lavish dove
how
lavish dove
oh lmao
proud creek
How😭
umbral monolith
spare quartz
IT IS TIME...
to redo a large amount of my decoder logic
the entire left hand side of ModR/M has been misunderstood this entire time
rustic vine
replace rust with ada
timid quartz
Ada*
spare quartz
timid quartz
https://tenor.com/view/ada-gif-16386182671461056186
he looks like he could be an ada programmer too
spare quartz
have to put my thinking cap on
timid quartz
spare quartz
rev 5 instrruction format is nice ... but i have to fix 800 errors caused by switching to it..
spare quartz
spare quartz
lavish dove
immediate eight!! NOW!!
full berry
added some things here and there
firing logic is almost done
now i just have to add the local bullet stuff
spare quartz
spare quartz
lavish dove
HOYL SHIT
spare quartz
worst news release ever
timid quartz
based
timid quartz
Yes
spare quartz
which means its at the top cause of wraparound
💪
anyways my cpu still has 432 errors... is hould get back to fixing it
timid quartz
which means its at the top cause of wraparound
nah
if you have a circular array of length 10, array[9] (ada) !== array[0] (rust)
spare quartz
okay, but why would you use a circular array for scoring
timid quartz
well u said wraparound
spare quartz
cause the score in my model would be attributed to the lang itself
and id use modular arithmetic..
spare quartz
there would be if you were sorting them in a list
timid quartz
you just get rust.score > ada.score
spare quartz
and happened to modify the score below 'Min
timid quartz
and happened to modify the score below 'Min
Fine
spare quartz
oh yeah... i also need to write my own bootloader :<
spare quartz
drop the ()s
BUT...
i think you mean Score'Min 🤓
and no its 'Max..
wait no im an idiot its 'First and 'Last 😭
timid quartz
Nah it’s 0
timid quartz
mmmmmaybe get a better lang idk
spare quartz
no
timid quartz
like rust :3
spare quartz
okay ill give you a question
how would i easily define a fixed point dec in rust with min/max functions
timid quartz
with a crate
spare quartz
whhhyyy would i need a crate to do that
timid quartz
cause f32 and f64 are floating
spare quartz
and you can't make your own numerical types, can you?
timid quartz
who needs custom numerical types
spare quartz
literally everyone
timid quartz
Nuh uh
timid quartz
Tell me one time a u8/16/32/64/128 wouldn’t have done what you needed it to do
timid quartz
i hope this is what happens to your "crates'
ALIRE CALLS THEM THE SAME THING
timid quartz
what if i needed a u24
why would you ever need a u24…
spare quartz
because many formats love using 3-byte sized ints
timid quartz
OURS ARE BETTER
YOU STOLE THE NAME
spare quartz
because many formats love using 3-byte sized ints
(unfortunately jvm langs dont have custom unsigneds...)
(so stuff like kotlin makes unsigned crap a bit woozy)
my x86 cpu gets around this by doing a lot of its math in longs and then truncating them when setting values
rustic vine
lol
nothing will change because of this
maybe unfortunately
maybe fortunately for you atp
spare quartz
fym maybe foruntrately..
rustic vine
LOL cause if anything changed, it'd prob include replacing ada with rust
spare quartz
NO
rustic vine
stuff in c will stay in c, stuff in cpp will stay in cpp, stuff in ada will... probably stay in ada
spare quartz
and thats cause the code itself is literally certified to not do x 😭
rustic vine
and thats cause the code itself is literally certified to not do x 😭
I certified my c code to not do x
beware of bugs in the above code, I have only proven it correct, not tested it
spare quartz
yeah your c code should hopefully be written with c, not xcode
rustic vine
yeah your c code should hopefully be written with c, not xcode
just you wait
spare quartz
spare quartz
beware of bugs in the above code, I have only proven it correct, not tested it
well..
assuming the code was formally proved in some way to not do something
then no testing is required
you know it won't ever do that thing
rustic vine
my code was formally proved to be bug free but still had many bugs
how do you explain that
spare quartz
where was your code
rustic vine
it was
in places
it converted 30 rotations to degrees then passed that number into a field that expected radians
spare quartz
cause testing/formal proof means nothing if you do:
- introspection
- radiation
rustic vine
it converted 30 rotations to degrees then passed that number into a field that e...
something like 10k radians
spare quartz
sounds like your code was just not written right
rustic vine
the actual conversion wanted was degrees to radians lol
rustic vine
sounds like your code was just not written right
but I proved it
spare quartz
you can prove anything
rustic vine
I gave it a ✅
spare quartz
remember
rustic vine
reviewer said LGTM
spare quartz
3.1415 = 3
spare quartz
i love pasting giant strings of pi into my code even though the type its held in doesnt have that precision
<3
spare quartz
i hate the food pie
rustic vine
oh they made a new channel #premium-cave-of-makers
boring
we already had that
its called #1264496483957346346
rustic vine
goats
spare quartz
rustic vine
"oh I can make music"
"how do you make music"
"I open fl studio"
"how did they make fl studio"
"they wrote code"
its all code
spare quartz
are you serious or j right nwo..
rustic vine
"oh I can make models"
"how do you make models"
"I open blender"
"how did they make blender"
"they wrote code"
its all code
rustic vine
are you serious or j right nwo..
dead serious I got not a clue what that is
spare quartz
okay so
isas (instruction set architectures) have two "variants" to how they're written
rustic vine
oh, risc is just newer
spare quartz
well thats not true
spare quartz
you got complex instruction set computers and reduced instruction set computers
CISC ISAs make a whole bunch of instructions to do big things in a single instruction
for example you can ADD from a memory location to another memory location
RISC ISAs make a bunch of little insturctions to do little things per instruction
spare quartz
so, GET from 2 memory locations
rustic vine
The simplest way to examine the advantages and disadvantages of RISC architecture is by contrasting it with it's predecessor: CISC
spare quartz
put them in two registers
add the two registers
PUT it somewhere
thats a tiny little risc
examples of RISC... ARM, RISC-V
examples of CISC... x86, whatever IBM is doing
these mattered when designing cpus a long while ago but
generally they're irrelevant today because CPUs don't really care about ISAs. it's all microcode now
but i still see people hate on x86 just cause its cisc
theres a good article here about why its just become irrelevant: https://chipsandcheese.com/p/why-x86-doesnt-need-to-die
spare quartz
> The simplest way to examine the advantages and disadvantages of RISC architect...
chronologically risc cpus might've become more popular than cisc cpus
but they aren't a replacement to them in any way
rustic vine
but why does it matter
spare quartz
why does what matter
rustic vine
if you do a lot in an instruction, don't it end up being many small instruction anyway
spare quartz
well again it used to matter when designing the cpu
rustic vine
like, if cisc wants to do something, it ends up having to do what risc does in each instruction anyway right
spare quartz
but now the cpu just turns whatever you're doing, risc or cisc, into specialized microcode for the operation
spare quartz
so like, its doing the same stuff at the end fo the day?
RISC ISAs may also do multiple things per op just an fyi
the term has become watered down, especially with what ARMs doing
another definition for what a risc isa might do is "all the instructions must be fixed length"
rustic vine
oh ok
spare quartz
in x86, a cisc, an instruction could be one byte long, two bytes for a modrm (register/memoy location), a displacement...
im gonna put a disclaimer here and say i'm not like, engineer-level experienced with each of the two
so i might've gotten things mixed up, but that's just what i've put together so far
spare quartz
maroww
i kinda just wanna like
write raw machine code for a project one day 😭
it's honestly not that daunting when you've got a manual (or multiple for file formats)
timid quartz
write raw machine code for a project one day 😭
not scary tbh
spare quartz
it's honestly not that daunting when you've got a manual (or multiple for file f...
yeah
i might just rig our ISO9660 reader to be able to write ISO files and work off that
spare quartz
fun getMemRM(
mod: UInt, rm: UInt, regRMType: RegisterType,
operandLength: AddressingLength
): MemRM = when (mod) {
0b00u, 0b01u, 0b10u -> {
val memRm = when (this.processor.operandSize) {
AddressingLength.R32 -> when (rm) {
0b000u -> this.processor.a.ex
0b001u -> this.processor.c.ex
0b010u -> this.processor.d.ex
0b011u -> this.processor.b.ex
0b100u -> this.decodeSIB()
0b101u -> this.readBinaryFetch(4).toULong()
0b110u -> this.processor.si.ex
0b111u -> this.processor.di.ex
else -> throw IllegalArgumentException(hex(rm))
} + when (mod) {
0b00u -> 0u
0b01u -> this.readFetch().toULong()
0b10u -> this.readBinaryFetch(4).toULong()
else -> throw IllegalArgumentException(hex(mod))
}
AddressingLength.R16 -> when (rm) {
0b000u -> this.processor.b.x + this.processor.si.x
0b001u -> this.processor.b.x + this.processor.di.x
0b010u -> this.processor.bp.x + this.processor.si.x
0b011u -> this.processor.bp.x + this.processor.di.x
0b100u -> this.processor.si.x
0b101u -> this.processor.di.x
0b110u -> when (mod) {
0b00u -> this.readBinaryFetch(2).toULong()
else -> this.processor.bp.x
}
0b111u -> this.processor.b.x
else -> throw IllegalArgumentException(hex(rm))
} + when (mod) {
0b00u -> 0u
0b01u -> this.readFetch().toULong()
0b10u -> this.readBinaryFetch(2).toULong()
else -> throw IllegalArgumentException(hex(mod))
}
else -> throw UnsupportedOperationException()
}
MemRM(null, memRm)
}
0b11u -> MemRM(this.getRegRM(rm, regRMType, operandLength), null)
else -> throw IllegalArgumentException("Bad mod: ${hex(mod)}")
}
decoder v2
actually fits on one page now
lavish dove
huge
spare quartz
whys it going off the screen
cause theres no scissoring and its just writing to a text buffer
lavish dove
implement vga rahh
spare quartz
unfortunately we are forced to when we make the move for server compat
as replicating the entire contents of memory wont be feasible
only video ram
spare quartz
that is the goal
the thing writing the disk error message is MS-DOS 6.22's boot loader
lavish dove
damn
rustic vine
Neat!
spare quartz
btw the screen in that video is totally messedu p
the actual screen is on the bottom of the box and teh cropping is one pixel off
but we fixed that ...
now i just gotta fix why my branch is breaking ...
making a cpu is hard
codeveloper is working (later today) on making our keyboard not sink all inputs from the player...
and to actually use our keyboard block that hasn't been touched in over a year...
but it'll also be his first time touching the processor/bios so that'll be fun
lavish dove
Woah
spare quartz
looks like it
rustic vine
they're growing human brains in a computer
spare quartz
looks like this is the first "wetware as a service"
spare quartz
lavish dove
is that a real thing
I remember reading that they were getting close a few years ago
lmfao its so long
lavish dove
look at how long it is lma
spare quartz
i am happy to announce,..
our computers have real VRAM in them!! (now)
IT WORKS
spare quartz
nah 👎
but look at it 🥺 we have real vram ...
also the assembly its running
(the trash on screen is a directory from the CD)
timid quartz
Now add working TCP
spare quartz
Now add working TCP
we can't add that until we know what it looks like (i.e. until something like MS-DOS fucks around and finds out)
yknow
you could probably already make ascii art on this thing
40x25
timid quartz
we can't add that until we know what it looks like (i.e. until something like MS...
what does this mean lmao
there’s plenty of working TCP everywhere
spare quartz
"add working tcp" means absolutely nothing when we're at the processor level
the cpu doesn't know or care about that stuff
timid quartz
oh right..
spare quartz
if ms-dos tried writing to an IO port or PCIe pertenient to TCP
timid quartz
add uh
spare quartz
then we would know where to start
timid quartz
working peripheral interface to a simulated NIC
spare quartz
that'll come after we can get a serious os booted
our bootloader isnt insanely complex so it's essentially just a test case rn
also btw
the computer shouldnt be running as well as it does honestly
it runs 40x25 drawText functions every frames
also no ada running on it yet 
just c and asm ...
codev and i have been talking about bringing back the BASIC casette if an os isnt found like IBM used to do though
(except instead of BASIC its a lua shell)
spare quartz
YOOOOOO IT WORKS
i wrote a tiny bios for ascii art
lemme recrod
see if you can recognize it..
@timid quartz
I GOT ADA RUNNING ON IT
this is so fun
spare quartz
timid quartz
I GOT ADA RUNNING ON IT
Ewwwww
spare quartz
i could get "rust" on it...
just need a 40x25 ascii art
working on how to address this effectively in asm rn though
timid quartz
Oh you didn’t actually get Ada running on it
spare quartz
barely why
spare quartz
i've really only heard of dvorak
that sounds weird to type in though
ill stick with my typewriter..
timid quartz
Colemak-DH looks nice but my friend uses that
so maybe either programmer dvorak or workman
trying to pick stuff that’s easily available
timid quartz
that sounds weird to type in though
unlike qwerty, dvorak is not named by the first 6 letters from the left on the top row
If it was it would be named uh
timid quartz
',.pyf
spare quartz
it still looks weird to type in
spare quartz
if you dont have carpal tunnel you're just not good enough
spare quartz
working on how to address this effectively in asm rn though
m,m,,m
decisions decisions
REPNE CMPS looks promising
REPNE SCAS..?
umbral monolith
proud creek
😭
lavish dove
https://fixupx.com/DiscordPreviews/status/1897095994342506764/photo/1
They don't work on that
That's just a new feature of the library they use for it
rustic vine
That's just a new feature of the library they use for it
and they haven't bumped the version of that library in years iirc
I remember being annoyed about that because luau syntax highlighting was pr'ed into that library a long while ago but discord hasn't bumped in ages
spare quartz
we love discord
lavish dove
I remember being annoyed about that because luau syntax highlighting was pr'ed i...
lmao avg discord moment
rustic vine
https://fixupx.com/Sauers_/status/1897061659090501877/photo/1
dont even think about merging this half baked intellelectually bankrupt garbage
I gotta drop that on a review for a pr sometime
flint belfry
can these theoretically run a full fledged iso
spare quartz
can these theoretically run a full fledged iso
wdym
flint belfry
like could i run an os
spare quartz
cause the test samples we're running on it rn are isos
spare quartz
like could i run an os
not stable enough
flint belfry
cause the test samples we're running on it rn *are* isos
so could you run that proxmox iso i gave you
spare quartz
it gets quite far though
flint belfry
not stable enough
oh
spare quartz
so could you run that proxmox iso i gave you
probably not for a few more months
since id assume that iso uses like
actual VGA
and doesn't rely on the textmode at the start of launch
flint belfry
this looks like computercraft but if it actually did cool shit
or whatever its called
spare quartz
opencomputers/computercraft yeah
flint belfry
yeah
spare quartz
those two are lua interpreters (in another way roblox scripts)
flint belfry
not like the mod is bad its just
you kn
yeah
you need to know how to code in lua
and it kinda made me initally think it was like vm computers
but no its just lua stuff
spare quartz
opencomputers II had a risc cpu which could run linux, but it kinda died (and RISC-V isn't as capable as x86, at least compat wise)
flint belfry
but if you know how to code in lua you can make some pretty cool base shit
flint belfry
opencomputers II had a risc cpu which could run linux, but it kinda died (and RI...
oh yeah
what mc version is breadmod
1.12 or
spare quartz
1.21
spare quartz
example of a test sample rn
spare quartz
~~make fabric port~~
we had a fabric/forge dual port using architectury on 1.20, but fabric is simply just lacking some of the stuff neoforge has
it makes some processes we do a lot harder with little documentation
flint belfry
ah
spare quartz
maybe in the future we'll try again idk
rustic vine
is that the michelin tire company
spare quartz
we have plans for a BreadLib to allow us to porrt to minecraft versions easier, but that'll require mega work on how the loaders work
rustic vine
flint belfry
if only there was like
a wine equivlent for forge to fabric shit
i think there is one but its very
messy and unstable
spare quartz
well there was a fabric-based loader that tried iirc called Patchwork
they died
i think theres a fabric to forge compat mod though lemme try and find it
spare quartz
flint belfry
and there arent any fabric ports from my knowledge
flint belfry
https://modrinth.com/mod/forgified-fabric-api
is this fabric to neo or neo to fabric
spare quartz
fabric to neo
flint belfry
is there one in reverse
spare quartz
dont think so
spare quartz
i dont like forge 😭
aw why not
flint belfry
it runs like garbage compared to fabric and i would generally rather use fabirc
rustic vine
i dont like forge 😭
proud creek
What does this have to do with bread
spare quartz
What does this have to do with bread
it does
proud creek
Where bread
spare quartz
lavish dove
woa
spare quartz
anyways now i gotta make it actually go into protected mode and make the gdt and stuff ..
lavish dove
lol
lavish dove
anyways now i gotta make it actually go into protected mode and make the gdt and...
whats your secret to storing atp I want to be awake all day and night
spare quartz
spare quartz
telnet/netcat on top..
timid quartz
not encrypted 👎
spare quartz
yeah well
the current government is NOT us.
anyways
windows is such a good os
(bypassing protection using an exploit in kernel-managed scrollbar code)
proud creek
@pastel tinsel 
spare quartz
honestly thinking bout making our own Bread Mod Compiler
pastel tinsel
<@345959027143999490> <a:death:1095147804244058122>
isn't a big deal
you haven't looked into it
proud creek
thats ruight
spare quartz
snow oak
holy assembly language
spare quartz
timid quartz
colemak-dh
spare quartz
hm
timid quartz
@spare quartz you know you wanna sink time into learning another keyboard layout
spare quartz
no i wanna sink more time into learning japanese
spare quartz
hm
had a bad idea about moving my bootloader backwards in memory instead of loading more data
spare quartz
okay BUT
if i set my password in japanese
then nobody could log in for eternity
easy
もにに
like who'd ever guess that
timid quartz
had a bad idea about moving my bootloader backwards in memory instead of loading...
do you know about the funny thing where boot code is mapped in two places
spare quartz
wdym
also gonna be running some tests on the sections (idk if they're really needed for kernel loading)
after this i think it's just jmping to the load address
timid quartz
smh
spare quartz
it just goes to the bios hook at F000:FFF0
timid quartz
lame
spare quartz
no
timid quartz
not an accurate or complete simulation
spare quartz
thats what real x86 does
we just don't have to care about uefi for now
i still like our BIOS design though
timid quartz
So your cpu basically bypasses this
spare quartz
no
timid quartz
ok confused
spare quartz
it's just for ease of BIOS hooking only the first 20 bits are considered like how the original PCs did it
upper 32 bits are not
F000:FFF0 is
when protected mode is entered the bios hooking apparatus is effectively disabled
(since the bios never existed there in our computer, it just turns into empty memory for the host)
lavish dove
ELF program headers being parsed and read into memory
I like how elf looked so scary then I made a linker script and its just reading one thing from a table (as long as u have the thing)
spare quartz
well it is scary when you have to consider all parts of what it can do
but for kernel loading we just load in the segments where it tells us to and jump to it
(afaik)
my bootloader code currently uses 80% of the 512 byte limit
considering it can render splash text, has error messages, basic user input
i think thats pretty okay
timid quartz
F000:FFF0 *is*
Nuh uh that’s 000F:0000
spare quartz
Nuh uh that’s 000F:0000
no
wait yes
too bad
host doesn't need to know our bios isnt real
(until it gets to reading the (E)BDA though, we have to poison those addresses cause theres no data there...)
spare quartz
FFF0:F000 is in here
okay i made a mistake :<
our bios hook is THERE
(even though again that memory address isnt real for us)
mmmm i think this is correct for rep movsd
si/di.x not .ex...
timid quartz
(even though again that memory address isnt real for us)
Well it’s a real address until you enable virtual memory
Just the data is garbage
timid quartz
wait yeah cause you’re in real mode
and you have to enable protected mode to get the entire 32-bit address space
spare quartz
we're only feeding the computer 1.5 MiB rn,,,
spare quartz
any attempts to requestMemoryAt beyond 1.5 MiB will cause the computer to implode
timid quartz
how r u gonna write an OS in 1.5mb
spare quartz
hmm.. is this correct..?
timid quartz
Sorry mb not kb
spare quartz
our kernel fits in that
spare quartz
microsoft
timid quartz
our kernel fits in that
well ur kernel basically does nothing so makes sense
spare quartz
:<
i commented out like 99% of the real kernel code cause it checks ACPI and serial ports n stuff
timid quartz
ACPI doesn’t exist
spare quartz
that also means we have to write our own AML ☹️
spare quartz
ACPI machine language
timid quartz
naaah
timid quartz
feed your computer like 1gb and let me load the OS I’m working on onto it
spare quartz
is your kernel 32-bit
timid quartz
yes of course
timid quartz
this os has a custom bootloader
timid quartz
Nuh uh
spare quartz
does yours fit in 512 bytes and only has one stage
timid quartz
mmm it’s two stages
timid quartz
there’s a tiny bit of assembly that enables protected mode and then calls a C function
spare quartz
i kinda sucked at x86 before this cpu project
i think its made me an intermediate level just by working with it
timid quartz
inferior Intel syntax
spare quartz
at&t syntax should've died when it was made
timid quartz
you’re just jealous of orb
spare quartz
dumbass we're on the same ISA
NASM literally wont let me compile if i dont use the b/w/d/q suffix on some instructions
spare quartz
we're probably gonna make a risc-v sim (rev2) after we can run DOOM on ours
mainly for the purposes of beating OC II for dying
spare quartz
wdym
timid quartz
idk
spare quartz
if you want you can take a copy of the 1.21.1-neoforge branch on intellij, and test it out on some ISOs
it's got an integrated disassembler for debugging
spare quartz
☹️
spare quartz
it's got an integrated disassembler for debugging
im still proud of the disassembler we have btw
its stupid simple yet effective
beats out GDB's crap one by a long shot too
(mainly cause it actually knows the operand length of instructions...)
timid quartz
I will not stand for gdb hate
spare quartz
GDB is so shit
timid quartz
gdb carries my ass through every os project
spare quartz
cause it's the only viable tool
for me it just LOVES segfaulting and forcing me to get my breakpoints back
timid quartz
skill issue
spare quartz
and the assembly view is ass, it can't read beyond one instruction in real mode
and it completely blows up on interrupts
timid quartz
https://preview.redd.it/madethistoavoidcoding-v0-4626qb5ilbfd1.jpeg?auto=webp&s=...
idk I hate organizing code
and thinking of where everything should go
and just like idk
when it comes to writing code it's kinda laborious
spare quartz
idk it's kinda just like english for me
timid quartz
and then all this stuff you're doing is quite advanced
timid quartz
idk it's kinda just like english for me
oh I mean I can defintely think in code and whatever
it's just large-scale organization and jazz
spare quartz
we kinda get around large scale org by
introspection everywhere we can
no instructions in the cpu are actually organized anywhere aside from just being inside an "impl" folder and annotated IA32Instruction(opcode)
timid quartz
cuh
spare quartz
timid quartz
also I feel like
spare quartz
i think its pretty good
spare quartz
... well that is kinda what we are we doing, is it not?
stuff like QEMU does crap like "TCG" where it can compile stuff to the hosts architecture
or JIT
we just read off the instruction stream and do as we're told
writing instructions is simple even if you might think it'd be complex
oops, that has to be converted to a UShort first
spare quartz
... well that is kinda what we are we doing, is it not?
i dont know how it'd be any other way
if by interpreter you mean something that just runs these instruictions but w/o the computer/processor/io backing, it's not really a simulation of x86 at all
its more like a fucked up disassembler in that regard
spare quartz
and then all this stuff you're doing is quite advanced
and again it's not
conceptually it might appear to be, and as a whole it is
but you don't think about these things as a whole
the way the CPU rn is built is just taking a reference sample (QEMU), and adjusting it to line up with QEMUs results
- we run into invalid instruction errors
- we add the instructions
- we run into subtle memory corruption errors
- we revise the probemlatic instructions and consult intels manuals on the operation of that instruction
- we run into an even more subtler quirk of x86's operation like GDTs
- we step in QEMU and see what happens there, and compare it to the processor
i say we as if my codev is working on it, but he does peripheral work, not processor work...
spare quartz
the way the CPU rn is built is just taking a reference sample (QEMU), and adjust...
(the only time this is not the case is during an instruction format revision, which i hope i dont do again, cause the last one took me 2 full days at 160 instructions, and we're now at ~215)
i think i rambled
timid quartz
and again it's not
I mean
im in an os class rn
and it kinda is
idk if I could have written this entire thing from scratch
spare quartz
you probably could have with enough time
cause i've been working on this for a solid month as if it were my job
and it's ultimately the 3rd attempt at me trying to sim an ISA
lavish dove
but for kernel loading we just load in the segments where it tells us to and jum...
Yeh I made a linker script that puts everything in the one segment
lavish dove
woah I just found out
putting data in the unused bits of a pointer is officially supported
its called pointer tagging apparently
timid quartz
Huh neat
Lots of potential for that with 64-bit virtual addresses
Cause in a 64-bit virtual address only 48 bits actually matter
timid quartz
In a 32-bit virtual address you’d have to be clever because all the bits are technically used
But in an ideal world everything is 4-aligned meaning you have 2 bits in the offset to work with
timid quartz
qemu is giving me a "dma error"
Direct memory access 
spare quartz
everything looks fine so idk why its complaining
im reading 0x25 blocks at position 0x24
spare quartz
fixed
spare quartz
timid quartz
Could it be you have a virtual-physical address mismatch?
spare quartz
there is no mmu set
timid quartz
…your bootloader will get paging…
timid quartz
based
spare quartz
everyone knows microkernels are the actual only good design
timid quartz
Your microkernel when a system process is still depended on by tons of user space processes and still crashes leaving your user space unusable (at least the kernel didn’t panic!!)
timid quartz
system process == server in my thing up there
spare quartz
❌
timid quartz
wdym ❌
spare quartz
a server runs in user space
timid quartz
You can’t tell me what I meant to say
spare quartz
yes i can
spare quartz
"system process" "user space process"
"user space process" depended on by tons of "user space process"
timid quartz
You still haven’t solved the problem of your user space dying if one of your servers goes offline
spare quartz
that kinda just sounds like an ISOLATED problem
spare quartz
You still haven’t solved the problem of your user space dying if one of your ser...
thats why we can restart them
ez
try doing that with a kernel driver
timid quartz
Ok what if your file system server dies and you can’t reload it from disk :3
spare quartz
hmmmmm
simple
we dont let that happen
😁
(you have a fallback on the kernel for raw disk access)
timid quartz
besides I’ll be waiting on your microkernel to do 5 billion context switches + process preemptions as all the servers talk while my monolithic kernel takes care of everything