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Ilia Sharin 21751c0025 docs(amiga): complete AmigaOS 3.1/3.2 developer reference — 172 files across 17 sections

Comprehensive technical documentation covering:
- Hardware: OCS/ECS/AGA custom chip registers, Copper & Blitter deep dives
- Boot sequence: cold boot through startup-sequence
- Binary format: HUNK executable spec, relocation, debug info
- Linking & ABI: .fd files, LVO tables, register calling conventions
- Exec kernel: tasks, interrupts, memory, signals, semaphores
- AmigaDOS: file I/O, FFS/OFS layout, CLI/Shell scripting
- Graphics: planar bitmaps, Copper programming, HAM/EHB modes
- Intuition: screens, windows, IDCMP, BOOPSI
- Devices: trackdisk, SCSI, serial, timer, audio, keyboard
- Libraries: utility, expansion, IFFParse, locale, ARexx
- Networking: bsdsocket API, SANA-II, TCP/IP stack comparison
- Toolchain: GCC, vasm/vlink, SAS/C, NDK, debugging
- Reverse engineering: IDA/Ghidra setup, compiler fingerprints, case studies
- CPU & MMU: 68040/060 emulation libs, PMMU, cache management
- Driver development: SANA-II, Picasso96/RTG, AHI audio

All files include breadcrumb navigation. No local paths or proprietary content.

2026-04-23 12:17:35 -04:00

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← Home · Libraries

rexxsyslib.library — ARexx Interface

Overview

ARexx is the Amiga's built-in macro/scripting language (based on REXX). rexxsyslib.library provides APIs for hosting ARexx ports, sending commands, and receiving results.

Adding an ARexx Port

struct MsgPort *arexxPort = CreateMsgPort();
arexxPort->mp_Node.ln_Name = "MYAPP";
arexxPort->mp_Node.ln_Pri  = 0;
AddPort(arexxPort);

/* In event loop, check for ARexx messages: */
struct RexxMsg *rmsg;
while ((rmsg = (struct RexxMsg *)GetMsg(arexxPort))) {
    STRPTR cmd = ARG0(rmsg);  /* the command string */
    /* Parse and execute command... */
    rmsg->rm_Result1 = 0;    /* RC = 0 (success) */
    rmsg->rm_Result2 = 0;
    ReplyMsg((struct Message *)rmsg);
}

RemPort(arexxPort);
DeleteMsgPort(arexxPort);

Sending ARexx Commands

struct MsgPort *replyPort = CreateMsgPort();
struct RexxMsg *rmsg = CreateRexxMsg(replyPort, NULL, NULL);
rmsg->rm_Args[0] = CreateArgstring("QUIT", 4);
rmsg->rm_Action  = RXCOMM;

struct MsgPort *target = FindPort("TARGETAPP");
if (target) {
    PutMsg(target, &rmsg->rm_Node);
    WaitPort(replyPort);
    GetMsg(replyPort);
    /* rmsg->rm_Result1 = return code */
}

DeleteArgstring(rmsg->rm_Args[0]);
DeleteRexxMsg(rmsg);
DeleteMsgPort(replyPort);

References

NDK39: rexx/storage.h, rexx/rxslib.h

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