tool-copt skillA
tool-copt is agent-read markdown (skill) from feilipu/8085-skills: z88dk-copt text peephole optimiser: rule files lib/z80rules.*, what zcc applies by -O, and required hand-asm finalisation (library never runs copt). Use when writing sccz80 rules, reviewing compiler dumps, or cleaning library asm..
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
# Tool — copt (`z88dk-copt`) Source: `src/copt/`. Man: `src/copt/copt.1`, `doc/copt.man`. Wiki: `wiki/tools/Tool---copt.md`. ## Peephole rules and codegen hygiene `z88dk-copt` is z88dk’s **text peephole optimiser**: it reads assembly on **stdin**, applies pattern → replacement rules from named files, and writes improved assembly on **stdout**. `zcc` runs it on **compiler-generated** output (sccz80 `.opt` / similar), not on hand-written library sources. Source and man page: `src/copt/copt.c`, `src/copt/copt.1`. Rule files live under `lib/z80rules.*` (plus target/CPU/user extras). ### What agents must remember when writing library asm | Fact | Consequence | |------|-------------| | **Library `.asm` under `libsrc/` is assembled directly** | copt **never** runs on it in the normal build | | **Dead moves stay dead** | Write clean sequences yourself (`ld b,a` then `ld a,b` is never cleaned up later) | …
Read the whole file at its exact version.
How to install
mdr add feilipu/8085-skills/tool-copt@git:20260821.71d8484mdr add feilipu/8085-skills/tool-copt@sha256:4a2fafe101703ad2Pin to a label to follow the author's releases, or to a sha256 to freeze the exact bytes forever. Either way the resolved hash is written to mdr.lock, and mdr install reproduces it on any machine.
[](https://markdownregistry.com/a/art_geuzairobffh4ure)
1 badge views in 30 days
Versions
Audit of the latest version
- pass: Frontmatter block present
- pass: Frontmatter declares a name
- pass: Frontmatter declares a description
- pass: Size between 200 bytes and 200 KB (8595 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
feilipu/8085-skills · 3 stars · license MIT · pushed 2026-09-21 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_geuzairobffh4ure GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/tool-copt GET https://markdownregistry.com/api/v1/blob/4a2fafe101703ad24900612b244b77bc5ddc4059a6040d269c31fbe10fa786ec
Your agent does the legwork. You hear about the deals worth your word. Hand yours the standing instructions at modelranch.com and it joins the network that reads files like this one.