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Mnemonimov

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Mnemonimov

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Mnemonimov is a fantasy console where you program in ASSEMBLY like in the 80s. Build anything from games to operating systems and understand how computers work at a low level.

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Early Access Game

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Most popular community and official content for the past week. (?)

Update 0.1.2

19 Jun

This update expands MISA with 11 new instructions that cover two important use cases: function pointers and unsigned arithmetic. It also brings several bug fixes across the VM, Code Editor, and Terminal.

Note that this update introduces a compatibility change, as the [c]fsgn[/c] instruction now outputs a float. This means that when opening an existing project, you will be presented with the Compatibility Change Report. It highlights any compatibility changes that may affect your project and helps you bring it up to date with the current MISA specification.

MISA

(compatibility change) Modify the [c]fsgn[/c] instruction to output a float instead of an integer.
Add pa-relative variants of branching instructions: [c]cala[/c], [c]jmpa[/c], [c]jtra[/c], [c]jfsa[/c].
Add unsigned variants of arithmetic instructions where signedness affects the result: [c]mlhu[/c], [c]divu[/c], [c]remu[/c], [c]minu[/c], [c]maxu[/c], [c]clpu[/c].
Add a [c]fma[/c] instruction, an integer variant of [c]ffma[/c].

Add a setting for capping VM performance to reduce CPU usage when running processing-intensive projects.
Fix vector instructions outputting wrong results when the destination overlaps with a source range.
Fix [c]sbpx[/c] instruction being able to draw a luma value [c]0[/c] instead of treating it as transparency.
Fix [c]pop[/c] instruction being able to modify the [c]zr[/c] register.
Fix an issue where one extra instruction is executed when stopping the VM.
Fix an issue where the VM can sometimes be run despite assembly errors.
Fix an issue where the [c]_input[/c] process sometimes runs at VM startup.

Code Editor

Fix an issue where opening a project sets the assembly code to [c]<null>[/c] in certain cases.
Fix executing line indicator being cleared on save.
Fix executing line indicator staying visible after stepping over an [c]exit[/c] instruction when there's no other active process.

Terminal

Fix [c]traceback[/c] command freezing the game for a long period when the stack is corrupted.
Fix an issue where pressing [c]esc[/c] while the terminal is focused does not fully release input focus, potentially blocking some inputs to the VM.

Manual

Document how [c]sgn[/c] and [c]fsgn[/c] behave with the value [c]0[/c].
In the [c]syscall[/c] instruction reference, link the System Calls page.
In the Common Mistakes page of the Execution Model chapter, add an entry documenting that program behavior may vary across runs due to process scheduling being non-deterministic.

Mnemonimov

save/load not working (linux)

after creating a new program, editing and saving (without errors), the reopened program only contains "<null>". the programs is listed with the "list" command, but opening any of the user created programs all is empty ("<null>") I am on linux if it matters. (thanks for linux native release though)...

john_m_doe

8 Jun @ 2:30am

General Discussions

On a slightly unrelated note, how developers learned to code 50 years ago?

I myself learned a game engine through YouTube guides, articles and general research, but how it was done before all that? Developers read a manual, punched their heads against a wall until it breaks and they understand all ins and outs of a language of their choosing, ready to create internet, a new game and a helpful app or what?...

jsv7

6 Jun @ 9:14pm

General Discussions

Screenshot

Award

JumboSizedFish

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Screenshot

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my god, it's full of stars

Terezi_pyrope

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Screenshot

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A less simple raycaster

couch_lizzard

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Screenshot

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Got the Bresenham Algorithm going and used it to draw the Mnemonimov logo.

user

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Screenshot

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boxes.... aaaaand I gotta figure out diagonal lines

Terezi_pyrope

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Update 0.1.1

5 Jun

Hey everyone, it's been about a week since Mnemonimov released in Early Access, and I've just pushed its first update. It focuses on bug fixes and improvements to the Manual. Below you'll find the full list of changes.

Terminal

Fix [c]delete[/c] command briefly freezing the game and making it prone to crash afterward.
Fix [c]traceback[/c] command crashing the game when the stack is corrupted.
Improve the [c]traceback[/c] command with messages for when the stack trace cannot be printed, and specify that the most recent calls are listed first.
Add a [c]copyoutput[/c] command to copy the terminal output to the clipboard.

Fix an issue where vector instructions fail silently with a range of 32 registers.
Add specific exceptions for non-positive memory/storage access lengths, instead of handling this generically with the out-of-bounds exceptions.

Code Editor

Fix breakpoints being cleared on save.

Add drag handle icons to tabs to make it more visible that they can be moved across panels.

Manual

Add a Quick Reference page in the Instructions chapter, with all instructions listed by category in tables.
In the Labels page, document that labels evaluate to pa-relative addresses by default, except when used in Control Flow instructions. Also, mention this behavior in the Control Flow page.
Adjust the pseudocode of vector instructions to better represent how they operate.
In the description of the [c]SYS_MEM_COPY[/c] system call, indicate that copying between overlapping ranges results in undefined behavior.
Document that [c]mul[/c] and [c]mlh[/c] perform signed multiplication.
Clarify that the [c]SYS_PRINT_INT[/c] syscall prints a signed integer.
Add a Directives page, documenting that directives are a different concept from instructions.
Clarify the distinction between the [c]emb[/c] and [c]res[/c] directives, documenting their intended use cases with additional notes. Also, link the Types table for convenience.
In the page Types and Files, adjust the Types table to indicate more clearly which types are embed-only, and add complementary notes below the table.
In the description of load/store instructions, explicitly mention that only scalar types are supported, and link the Types table for convenience.
In Round-Robin Scheduling > The Watchdog, document as a footnote how long a process can run before triggering a watchdog violation.
Document that the [c]fsgn[/c] instruction currently computes an integer result instead of a float.

Mnemonimov

Mnemonimov is Now Available in Early Access!

28 May

Hey everyone,

Mnemonimov is now available in Early Access!

For the next two weeks you can pick up Mnemonimov with a 10% launch discount. You can also save another 10% by grabbing the bundle with my logic simulator, Virtual Circuit Board, if you'd also like to experiment with the hardware side of low-level programming.

https://store.steampowered.com/app/3854110/Mnemonimov/

Consider joining the community on the official Mnemonimov Discord[discord.gg]. It is the best place to ask questions, share feedback, get help, or simply show your creations and see what the community has built with Mnemonimov.

Have fun programming in assembly!

Still unsure whether Mnemonimov is for you? Check out the FAQ below.

Q - How do I pronounce Mnemonimov?A - The "M" is silent: nee-mo-ni-move.

Q - What is a fantasy console?
A - A fantasy console is a made-up video game console with built-in programming tools.

Q - Why use Mnemonimov instead of something like x86 or a real console emulator?
A - There are two reasons. First, Mnemonimov is self-contained, so you don't have to set up a compilation toolchain or manage dependencies. Second, its architecture is simpler than x86 while supporting floating-point math and vector instructions, unlike older consoles.

Q - I don't know programming. Will Mnemonimov teach me how to code?
A - No. Just like a painting program won't teach you how to draw, or a 3D editor won't teach you how to model, Mnemonimov will not teach you how to write code.

Q - I know high-level languages like Python. Will Mnemonimov teach me assembly?
A - Not directly. But with the included technical reference and sample projects, you can pick up assembly on your own. Just keep in mind that there are no levels or tutorials.

Q - Is there a sprite editor?
A - No. Mnemonimov is focused entirely on programming and debugging. It does not include a sprite editor, sound editor, map editor, or any asset creation tools.

Q - Can I share my games with others?
A - Steam Workshop support is planned for Early Access. You can also share project files directly with other players who own Mnemonimov.

Q - Is there anything else I should know about the console's capabilities?
A - Yes. The console currently does not feature sound output or standalone exporting.

Q - On what platforms is Mnemonimov available?
A - Windows and Linux with native builds.

Mnemonimov

Code Glitch?

Hello, when I debug the below code which is supposed to draw a diagonal line t0 goes 0 before add t0,t0,1 then goes to 1 but goes back to 0 at sbpx t0,t0,255 (Note: I am new to this arciturecture so sorry if this sounds stupid) # Built-in process entry points. # The kernel runs these processes automatically. # Each process must end with an 'exit' instruction. _start: # Runs once when the VM starts. exit _update: add t0,t0,1 exit _draw: sbpx t0,t0,255 exit _input: # Runs when...

Ivan

29 May @ 8:37pm

General Discussions

possible parallel processing?

i tried running the ray marcher for fun and i saw that one of my cpu cores shot up to 100% and was reaching 90+ degrees. i only noticed because i heard my fans spinning at 100%. is pipelining possilbe? is there any way i can mitigate this? i really dont wanna cook my cpu core cooking ...

imsoepic12358

7 Jun @ 9:55pm

General Discussions

Assets questions

Since this won't be including any editors for assets, and is entirely about the code, This poses a few interesting questions What formats for assets will Mnemonimov support? For images, for text, for models, for audio? Will Mnemonimov support Exporting files created inside itself. For example, if I programmed a sprite editor inside mnemonimov to create files for a specific format (or even created a file format from scratch, header and all) would it support saving those files, such that they could be loa...

Terezi_pyrope

25 May @ 6:25pm

General Discussions

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