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https://github.com/alfishe/amiga-bootcamp.git
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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.
66 lines
1.5 KiB
Markdown
66 lines
1.5 KiB
Markdown
[← Home](../README.md) · [Devices](README.md)
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# scsi.device — Hard Disk I/O
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## Overview
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SCSI and IDE hard disks are accessed via `scsi.device` (A3000/A4000 built-in) or `2nd.scsi.device` / `ide.device` (A1200/A600). The API is the same as trackdisk for basic read/write, with additional SCSI direct commands.
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---
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## Opening
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```c
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struct IOStdReq *scsi = CreateStdIO(port);
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OpenDevice("scsi.device", 0, (struct IORequest *)scsi, 0);
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/* unit 0 = first SCSI/IDE device */
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```
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---
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## Standard Commands
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Same as trackdisk: `CMD_READ`, `CMD_WRITE`, `CMD_UPDATE`, `TD_CHANGENUM`, etc.
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---
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## Direct SCSI Commands (HD_SCSICMD)
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```c
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struct SCSICmd scsicmd;
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UBYTE cdb[10]; /* SCSI CDB */
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UBYTE sense[20]; /* sense data buffer */
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UBYTE data[512]; /* data buffer */
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/* Read 1 sector at LBA 0: */
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cdb[0] = 0x28; /* READ(10) */
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cdb[1] = 0;
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cdb[2] = 0; cdb[3] = 0; cdb[4] = 0; cdb[5] = 0; /* LBA = 0 */
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cdb[6] = 0;
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cdb[7] = 0; cdb[8] = 1; /* transfer length = 1 sector */
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cdb[9] = 0;
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scsicmd.scsi_Data = (UWORD *)data;
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scsicmd.scsi_Length = 512;
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scsicmd.scsi_Command = cdb;
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scsicmd.scsi_CmdLength = 10;
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scsicmd.scsi_Flags = SCSIF_READ;
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scsicmd.scsi_SenseData = sense;
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scsicmd.scsi_SenseLength = sizeof(sense);
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scsi->io_Command = HD_SCSICMD;
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scsi->io_Data = &scsicmd;
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scsi->io_Length = sizeof(scsicmd);
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DoIO((struct IORequest *)scsi);
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if (scsicmd.scsi_Status != 0) {
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/* SCSI error — check sense data */
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}
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```
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---
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## References
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- NDK39: `devices/scsidisk.h`
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- ADCD 2.1: scsi.device autodocs
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