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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.
57 lines
1.2 KiB
Markdown
57 lines
1.2 KiB
Markdown
[← Home](../README.md) · [Libraries](README.md)
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# diskfont.library — Disk-Based Fonts
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## Overview
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`diskfont.library` loads bitmap fonts from disk (the `FONTS:` assign). ROM fonts (topaz 8, topaz 9) are always available; all others require this library.
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---
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## Loading a Disk Font
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```c
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struct Library *DiskfontBase = OpenLibrary("diskfont.library", 0);
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struct TextAttr ta = {"helvetica.font", 24, 0, 0};
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struct TextFont *font = OpenDiskFont(&ta);
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if (font) {
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SetFont(rp, font);
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/* ... render ... */
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CloseFont(font);
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}
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CloseLibrary(DiskfontBase);
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```
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---
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## Font Directory Structure
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```
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FONTS:
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helvetica.font ← font descriptor file
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helvetica/
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24 ← bitmap data for size 24
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11 ← bitmap data for size 11
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```
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---
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## Listing Available Fonts
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```c
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struct List *fontList = NULL;
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LONG count = AvailFonts(buf, bufsize, AFF_DISK | AFF_MEMORY);
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struct AvailFontsHeader *afh = (struct AvailFontsHeader *)buf;
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struct AvailFonts *af = (struct AvailFonts *)&afh[1];
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for (int i = 0; i < afh->afh_NumEntries; i++) {
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Printf("%s %ld\n", af[i].af_Attr.ta_Name, af[i].af_Attr.ta_YSize);
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}
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```
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---
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## References
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- NDK39: `diskfont/diskfont.h`
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