Home / feilipu / 8085-skills · .agents/skills/target-cpm/SKILL.md · GitHub

target-cpm skillA

target-cpm is agent-read markdown (skill) from feilipu/8085-skills: z88dk +cpm only: classic vs newlib CP/M, clib/CPU variants (8080/8085/z180), subtypes as packaging (not “newlib”), FCB disk, .com builds. Use when the task is explicitly +cpm / CP/M, not generic targets..

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

# Target — CP/M (`+cpm`)

| | |
|--|--|
| Config | `lib/config/cpm.cfg` |
| Tree | `libsrc/target/cpm/` (classic + newlib share tree; **list isolation**) |
| Wiki | `wiki/platforms/Platform---CPM.md` |
| Help | `zcc +cpm -h` (authoritative subtype list) |

## Two worlds (do not mix cores)

| | Classic | Newlib |
|--|---------|--------|
| Select | default / `-clib=default` / `8080` / `8085` / `z180` / `ixiy` / `ansi` | `-clib=new` / `sdcc_ix` / `sdcc_iy` |
| CRT | `lib/target/cpm/classic/cpm_crt0` | `libsrc/target/cpm/cpm_crt.asm.m4` |
| Lib | `-lcpm_clib`, `-lcpm8085_clib`, … | `-lcpm` + sccz80/sdcc_ix clibs |
| Headers | `include/` | `include/_DEVELOPMENT/common/` |
| Disk | classic FCB fcntl | newlib FCB (`asm_target_open_*`); FatFs separate optional stack |
| CPUs | multi (Z80, 8080, 8085, Z180, …) | **Z80-class only** |

**Hard rule:** one `open` owner per binary. Do not link classic fcntl with newlib `cpm_01_file`. See `libsrc/target/cpm/README-mixed-tree.md`.

## Subtypes

- Mostly **disc / packaging** (`-Cz+cpmdisk`, `.com`), **not** “newlib selector”.
- Default subtype → `.com`-style (`-Cz+newext … .com`).
…

Read the whole file at its exact version.

How to install

Latest version
mdr add feilipu/8085-skills/target-cpm@git:20260821.71d8484
Exact content
mdr add feilipu/8085-skills/target-cpm@sha256:dbbef9c1599748a5

Pin 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.

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Versions

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git:20260821.71d8484 latest2026-08-21 71d8484 2,217 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 (2217 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_hcja4fw66f637phr
GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/target-cpm
GET https://markdownregistry.com/api/v1/blob/dbbef9c1599748a5477186b8d5d80e196b5b352ed938dd03046ec4268edd641b

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.

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