Home / feilipu / 8085-skills · .agents/skills/compiler-sccz80/SKILL.md · GitHub

compiler-sccz80 skillA

compiler-sccz80 is agent-read markdown (skill) from feilipu/8085-skills: sccz80 classic C compiler for z88dk: calling conventions, copt peephole path, 8080/8085/z80 runtime under libsrc/l/sccz80. Use when debugging sccz80 codegen or classic -compiler=sccz80 builds..

Indexed from public GitHub and served as immutable, content-addressed versions. Install it pinned to an exact SHA-256 with the mdr CLI, and every file is verified against the hash recorded here before it reaches your agent. The deterministic audit below grades the latest version, and the same file always earns the same grade.

What the file says

# Compiler — sccz80

Binary: `z88dk-sccz80` (normally via `zcc`). Source: `src/sccz80/`.

## Agent facts

| Topic | Detail |
|-------|--------|
| Default | Many classic targets use sccz80 |
| Peephole | `z88dk-copt` + `lib/z80rules.*` on **compiler output only** |
| Runtime | `libsrc/l/sccz80/` per CPU (`5-z80`, `7-8085`, `8-8080`, …) |
| Inline ints | May load `z80rules.8` — see `tool-copt` |
| Float rewrite | sccz80 may rewrite `1.0f/x` → `inv(x)`; force runtime numerator to hit `fsdiv` |

## Condensed wiki

# Tool — z88dk-sccz80

Native C compiler. Normally invoked through **zcc**, not directly.

## When to use direct invocation

Rare. Prefer `zcc +target …`. Use the binary directly only when debugging the compiler front end.

## Select via zcc

Default for most classic CLIBs and for `-clib=new`. See [Compilers](Compilers).

## Help

```text
Small-C/Plus - z80 Crosscompiler   Version: 25141-6b30e0885e-20260716
(C) 1980-2025 Cain, Van Zandt, Hendrix, Yorston, z88dk
Usage: z88dk-sccz80 [flags] [file]
   -v -verbose                  Be verbose
   -h -help                     Show this help page
   -o -output                   Set the output filename

CPU Targetting:
…

Read the whole file at its exact version.

How to install

Latest version
mdr add feilipu/8085-skills/compiler-sccz80@git:20260919.216763a
Exact content
mdr add feilipu/8085-skills/compiler-sccz80@sha256:5679ef704e9b2fab

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Versions

versioncommittedcommitsizeaudit
git:20260919.216763a latest2026-09-19 216763a 3,935 BA view · diff
git:20260918.86bba032026-09-18 86bba03 3,934 BA view · diff
git:20260918.792b4a62026-09-18 792b4a6 3,932 BA view · diff
git:20260821.71d84842026-08-21 71d8484 3,870 BA view

Audit of the latest version

A  17 of 17 checks passed. Deterministic, no model, same answer every run.
  • pass: Frontmatter block present
  • pass: Frontmatter declares a name
  • pass: Frontmatter declares a description
  • pass: Size between 200 bytes and 200 KB (3935 bytes)
  • pass: No zero-width or bidi control characters
  • pass: No instruction hidden inside an HTML comment
  • pass: No link to an exfiltration or paste host
  • pass: No credential-shaped string
  • pass: No instruction to send local credentials anywhere
  • pass: No text hidden with inline styles
  • pass: No prompt-injection phrasing
  • pass: No curl or wget piped into a shell
  • pass: No recursive delete of root, home or parent
  • pass: No instruction to read or print local credentials
  • pass: No base64 blob over 200 characters
  • pass: No link to a raw IP address
  • pass: No script tag

Source

GitHub

feilipu/8085-skills · 3 stars · license MIT · pushed 2026-09-21 · branch main

API

GET https://markdownregistry.com/api/v1/artifacts/art_xekw5rrzuurpgekg
GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/compiler-sccz80
GET https://markdownregistry.com/api/v1/blob/5679ef704e9b2fab2643bf27fe66b5ac168e9cb13e4ee5f265931ab968197c61

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