Run Magic XPA on a Windows x86 server. Use the HTTPCall function not to call out , but to listen in . Expose Magic programs as REST endpoints. A Node.js or C# frontend can call your CLS x86 backend via JSON. Your business logic remains in Magic; the UI becomes React.
Instead, "CLS Magic" refers to the specific combination of and Direct Memory Access (DMA) techniques used to reset the video buffer. In the x86 architecture, the screen is essentially a window into a specific block of RAM. The BIOS Way: Interrupt 10h
The term here refers to the opaque, deterministic transformation performed by the JIT compiler (e.g., RyuJIT in modern .NET). When a method marked with CLS-compliant attributes is called for the first time, the JIT compiler converts its Common Intermediate Language (CIL) into native x86 instructions. Consider a simple CLS-compliant function: public static int Add(int a, int b) { return a + b; } . The CIL is stack-based and abstract. The x86 code, however, must map that abstraction to registers like EAX , ECX , and EDX , respecting the fastcall calling convention. The magic is that the JIT compiler also injects bounds checks on arrays, null checks on references, and stack overflow probes —all absent in raw x86 assembly. The developer sees type safety; the x86 sees CMP and JMP instructions guarding against undefined behavior. cls magic x86
mov ah, 06h ; Scroll up function mov al, 0 ; Clear entire screen mov bh, 07h ; White text on black background mov cx, 0 ; Top left (0,0) mov dx, 184fh ; Bottom right (80x25) int 10h ; Call BIOS Use code with caution. The Hardware Way: Direct Video Memory Access
; Assumptions: ES points to video memory segment (0xB800) ; The screen is 80x25 = 2000 words (4000 bytes) Run Magic XPA on a Windows x86 server
Magic heavily uses memory-mapped files for temporary storage. On x86, the default Windows caching behavior can lead to "system file cache bloat."
To perform a CLS "manually," the x86 programmer must write 2,000 characters (80 * 25) of blank space (ASCII 0x20) directly into memory starting at 0xB8000 . A Node
Older Magic versions (eDeveloper 9.4, 10.1) are strictly 32-bit. On x86, a 32-bit process can only address 2GB of RAM (or 4GB with /LARGEADDRESSAWARE ). If your batch job processes 1 million rows, it will crash. Solution: Upgrade to Magic XPA 4.x (64-bit native) or split your batch jobs into chunks.