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As far as I’m aware, no. Yes, RosAsm is GPL-licensed free software, and its source code is included inside the executables. (Run strings RosAsm2049a.EXE to see it.) Yes, but not from the command-li …

It is however possible to write code which will adjust to different memory models at build time, so a single assembly file can be used to produce all the required object file variants. …

This is a “write-twice” register, a 16-bit register mapped into a single byte, which takes two 8-bit stores to populate. There are a number of these on the SNES, with varying write orders (high or low …

A number of FreeDOS programs are written in x86 assembly language, including games such as Floppy Bird and Invaders. … A few demoscene productions for the PC include source code, usually in assembly language, but all those I’m aware of require a 386. …

According to the release notes which accompany version 3.2, the Telemark Assembler was available for Linux starting with version 3.1. This included source code, which I'd imagine shouldn't be too hard …

The 8087 doesn’t add new capabilities to the 8086 itself; it acts purely as a co-processor — a similar model which might be more familiar nowadays is that of a GPU attached to a CPU. The 8087’s regis …

The discussion started with an article by Augie Hansen, Instant Screens, in the June 1986 issue of PC Tech Journal. That article describes the snow problem in detail, and presents a technique to avoid …

As others have explained, ADC adds its two operands and the carry bit, storing the result in the first operand. Like ADD, it sets the carry bit as appropriate: adding two n-bit values produces a (n+1) …

You need to use a segment and offset, 0xB8000 can’t be represented directly in 16 bits: mov ax, b800 mov ds, ax ; set AX appropriately here, or write an immediate value mov [0000], ax You need to go …

According to Wikipedia, the first assembly language, "Contracted Notation", was developed in 1947 by the late Kathleen Booth (née Britten). … The language doesn’t look anything like “modern” assembly though (see the end of this paper); it’s more a mathematical representation of computer operations. …

SCP developed DOS in assembly for a few very pragmatic reasons: The last design requirement was that MS-DOS be written in assembly language. … tools on PCs for a long time, and system developers were as familiar with assembly as with any other language. …

As others have mentioned this does indeed look like a strange attempt to allocate memory for the game. What do the programs do? The TSRs (and presumably the game executable) use interrupt vectors as g …

Before the 286, x86 CPUs can only access 1MiB, so the only way to use memory beyond 1MiB is to use some form of bank switching. The de facto standard for that is Lotus/Intel/Microsoft EMS, which provi …

The “ASCII” instructions are really about unpacked BCD, not ASCII. There is some justification for calling them “ASCII”, because unpacked BCD can easily be converted to and from ASCII, and in fact if …

As explained in Justme’s answer, there’s nothing inherently wrong with your code, and building a .COM file with nasm -fbin -oloop.com loop.asm produces a 29-byte file which works fine. However there …