snark13/Sprinter-SDCC
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Add full compiler toolchain, libc, examples and reference docs

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First substantive commit: the entire Sprinter C compiler tree on top of
the bare README+gitignore initial commit.

What's in here:
  bin/sprinter-cc        — driver script invoking SDCC + linker + mkexe
  libc/                  — Sprinter-specific libc layer over ESTEX/BIOS
                           (conio, gfx, io, mem, stdio + headers)
  runtime/               — crt0 variants (default/small/banked/minimal)
                           + heap + bank trampolines
  toolchain/             — mkexe (SprintEXE packer, C + tests)
  examples/              — 30 demo programs (gfx, file I/O, env, time, …)
  lib/Makefile           — builds the libc archive (sprinter.lib)
  docs/                  — converted Sprinter manuals + asm reference samples
  third_party/           — solid-c reference compiler dump + sdcc setup script
  release_docs/          — packaging / release notes

gitignore overhaul:
  • Drop dangerous blanket patterns: *.asm (would hide docs/samples/*.asm)
    and *.exe (case-insensitive match was hiding third_party/solid-c/*.EXE
    on macOS APFS).  Replaced with examples/*/*.{asm,exe,…} and lib/*.lib.
  • Restore tracking of toolchain/mkexe/tests/{one,big}.bin — those are
    INPUT fixtures, not build outputs.
  • Collapse the duplicated SDCC/C/Sdcc sections into one section per
    concern (build outputs / vendored / OS-junk).
  • Add .sprinter-cc-*/, build/ (catches lib/build/ too), .claude/.

Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
This commit is contained in:
Alexander Petrov
2026-06-03 16:13:21 +03:00
parent f542608b3f
commit c71e249a4e
404 changed files with 75155 additions and 58 deletions
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examples/gfx_d16/gfx_d16.c
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/*
* gfx_demo16 — exercises the 640×256×16 (mode 0x82) primitives.
*
* Stages (press a key to advance):
* 1. 1-pixel frame via hline/vline16 — verifies edge alignment
* (odd-x and odd-(x+len) RMW paths)
* 2. Nested rectangles in cycled colours
* 3. Colour bars — 16 vertical stripes, each colour 0..15
* (palette readability test)
* 4. Diagonal star + axis-aligned cross via line16
*/
#include <stdio.h>
#include <conio.h>
#include <gfx.h>
#include <stdint.h>
static uint8_t palette[16 * 4];
static void wait_key(void)
{
__asm
ld c, #0x30
rst #0x10
__endasm;
}
static void build_palette(void)
{
/* 16-color palette: index 0 = black, 1..7 = primary ramp,
* 8..15 = mid/light variants. Order chosen so neighbouring
* indices contrast in the colour-bars test. */
static const uint8_t bgr[16][3] = {
{0x00, 0x00, 0x00}, /* 0 black */
{0x00, 0x00, 0xFF}, /* 1 red */
{0x00, 0xFF, 0x00}, /* 2 green */
{0xFF, 0x00, 0x00}, /* 3 blue */
{0x00, 0xFF, 0xFF}, /* 4 yellow */
{0xFF, 0x00, 0xFF}, /* 5 magenta */
{0xFF, 0xFF, 0x00}, /* 6 cyan */
{0xFF, 0xFF, 0xFF}, /* 7 white */
{0x40, 0x40, 0x40}, /* 8 dim grey */
{0x40, 0x40, 0xFF}, /* 9 light red */
{0x40, 0xFF, 0x40}, /* A light green */
{0xFF, 0x40, 0x40}, /* B light blue */
{0x40, 0xFF, 0xFF}, /* C light yellow */
{0xFF, 0x40, 0xFF}, /* D light magenta */
{0xFF, 0xFF, 0x40}, /* E light cyan */
{0xA0, 0xA0, 0xA0}, /* F grey */
};
for (int i = 0; i < 16; i++) {
palette[i * 4 + 0] = bgr[i][0];
palette[i * 4 + 1] = bgr[i][1];
palette[i * 4 + 2] = bgr[i][2];
palette[i * 4 + 3] = 0;
}
}
int main(void)
{
build_palette();
uint8_t prev = gfx_init(GFX_MODE_640x256x16, 0);
gfx_pal_load(0, 0, 16, palette);
/* --- Stage 1: 1-px frame at edges -------------------------------- */
gfx_clear16(8); /* dim grey */
gfx_hline16(0, 0, GFX_WIDTH_16, 7); /* white top */
gfx_hline16(0, GFX_HEIGHT_16 - 1, GFX_WIDTH_16, 7); /* white bottom */
gfx_vline16(0, 0, GFX_HEIGHT_16, 7);
gfx_vline16(GFX_WIDTH_16 - 1, 0, GFX_HEIGHT_16, 7);
/* 1-px inset purple frame — exercises odd-x edges. */
gfx_hline16(1, 1, GFX_WIDTH_16 - 2, 5);
gfx_hline16(1, GFX_HEIGHT_16 - 2, GFX_WIDTH_16 - 2, 5);
gfx_vline16(1, 2, GFX_HEIGHT_16 - 4, 5);
gfx_vline16(GFX_WIDTH_16 - 2, 2, GFX_HEIGHT_16 - 4, 5);
wait_key();
/* --- Stage 2: nested rectangles --------------------------------- */
gfx_clear16(0);
for (int i = 0; i < 16; i++)
gfx_rect16(i * 20, i * 8,
GFX_WIDTH_16 - i * 40,
GFX_HEIGHT_16 - i * 16,
(uint8_t)((i + 1) & 0x0F));
wait_key();
/* --- Stage 3: vertical color bars ------------------------------- */
gfx_clear16(0);
/* 16 bars × 40 px wide = 640 px exactly. */
for (int i = 0; i < 16; i++)
gfx_fill_rect16(i * 40, 0, 40, GFX_HEIGHT_16, (uint8_t)i);
wait_key();
/* --- Stage 4: diagonal star + cross ----------------------------- */
gfx_clear16(0);
int cx = GFX_WIDTH_16 / 2, cy = GFX_HEIGHT_16 / 2;
for (int i = 0; i < 16; i++) {
int ex = i * (GFX_WIDTH_16 - 1) / 15;
gfx_line16(cx, cy, ex, 0, 7);
gfx_line16(cx, cy, ex, GFX_HEIGHT_16 - 1, 3);
}
for (int i = 0; i < 16; i++) {
int ey = i * (GFX_HEIGHT_16 - 1) / 15;
gfx_line16(cx, cy, 0, ey, 1);
gfx_line16(cx, cy, GFX_WIDTH_16 - 1, ey, 2);
}
/* axis-aligned cross to verify hline/vline alignment at runtime. */
gfx_hline16(0, cy, GFX_WIDTH_16, 6);
gfx_vline16(cx, 0, GFX_HEIGHT_16, 6);
wait_key();
gfx_done(prev);
puts("done");
return 0;
}