cpu-8085 SKILL.md skillA
cpu-8085 from feilipu/8085-skills is an agent skill: a SKILL.md folder an AI agent loads when a task calls for it.
mdr add feilipu/8085-skills/cpu-8085@git:20261017.e3a0662Pins git:20261017.e3a0662 in mdr.lock. Pin the fingerprint instead.
- Audit grade
- A, 17 of 17 checks passed
- Kind
- SKILL.md skill
- Repository
- feilipu/8085-skills
- Path
.agents/skills/cpu-8085/SKILL.md- Versions recorded
- 11
- Latest version
- git:20261017.e3a0662, committed Oct 17, 2026
- First version recorded
- Sep 18, 2026
- Size
- 31,376 bytes
- Repository stars
- 3
- License
- MIT
Intel 8085 assembly for z88dk: Zilog mnemonics, full opcode map (flags K/V, timings), and extended-instruction usage. Strong rule: stack-only locals and intermediates; do not invent BSS scratch (C static / file-scope stay BSS). Prefer when writing or reviewing 8085 library asm, mapping Intel↔Zilog, choosing stack frames, K-flag loops, restoring float/integer divide, legal (de) stores, jr-as-jp synthetics, or /cpu-8085.
Collected from public GitHub. Every version is saved exactly as it was and never changes. Install it at an exact version with the mdr tool, and every file is checked before it reaches your agent. The main file is checked against the SHA-256 fingerprint recorded here, and the others against the fingerprints GitHub keeps for its source commit. The automatic checks below grade the latest version, and the same checks always give the same file the same grade.
What the file says
# CPU — 8085 Compatible extension of the Intel 8080 (April 1974). Same documented 8080 ops; ten extra ops in 8080 unused cells. **This skill is complete for opcodes, flags, timings, and extended-op usage.** C90 kernels and agent-emitted listings: **`compiler-ac85`**. 8080-only jobs (no extras) use `cpu-8080` in the z88dk tree — this pack does not ship it. z88dk uses **Zilog mnemonics** for 8085 sources. Extended opcodes are first-class on every 8085. Design notes: https://feilipu.me/2021/09/27/8085-software/ ## Conventions (always follow) 1. **Mnemonics are Zilog**, as in Z80 assembly — not Intel 8080/8085 names. 2. **Opcode bytes and timings are 8085**, not 8080 and not Z80. 3. **Undocumented / extended** opcodes are noted in tables (column or section). 4. Immediate forms: `*` = 8-bit immediate (d8), `**` = 16-bit immediate/address (d16/a16). These `*`/`**` are operand placeholders only. 5. For **LDHI** / **LDSI** equivalents (`ld de,hl+*` / `ld de,sp+*`), the 8-bit offset is **unsigned**. 6. Conditional cycle counts use `taken/not-taken` (e.g. `12/6`, `10/7`, `18/9`). …
Read the whole file at its exact version.
How to install
mdr add feilipu/8085-skills/cpu-8085@sha256:c61c59346baae394The line at the top of this page pins the label git:20261017.e3a0662, which is what most people want. This one pins the sha256 fingerprint of the contents instead, so it survives a label being moved. Either way the exact version is written to mdr.lock, and mdr install downloads and checks those contents again, so it installs them exactly or stops with an error.
[](https://markdownregistry.com/a/art_4fpzpohngggznwkh)
4 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 11 versions of this file, between Sep 18, 2026 and Oct 17, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261017.e3a0662 latest | 2026-10-17 | e3a0662 | 31,376 B | A | view · diff |
| git:20260927.e4e41d5 | 2026-09-27 | e4e41d5 | 31,091 B | A | view · diff |
| git:20260921.85b9514 | 2026-09-21 | 85b9514 | 30,680 B | A | view · diff |
| git:20260921.2f39ee6 | 2026-09-21 | 2f39ee6 | 30,643 B | A | view · diff |
| git:20260920.88ac0a1 | 2026-09-20 | 88ac0a1 | 30,011 B | A | view · diff |
| git:20260920.d893132 | 2026-09-20 | d893132 | 29,760 B | A | view · diff |
| git:20260919.24cc48b | 2026-09-19 | 24cc48b | 28,354 B | A | view · diff |
| git:20260919.216763a | 2026-09-19 | 216763a | 26,756 B | A | view · diff |
| git:20260918.86bba03 | 2026-09-18 | 86bba03 | 26,753 B | A | view · diff |
| git:20260918.792b4a6 | 2026-09-18 | 792b4a6 | 26,352 B | A | view · diff |
| git:20260918.95c4588 | 2026-09-18 | 95c4588 | 26,293 B | A | view |
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 (31376 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 2026-11-03 · branch main
API
GET https://markdownregistry.com/api/v1/artifacts/art_4fpzpohngggznwkh GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/cpu-8085 GET https://markdownregistry.com/api/v1/blob/c61c59346baae39417b487c95776e4882b31291b53744e2924bd30de35a423c6
Your AI assistant 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.
Guides: the SKILL.md format and its required fields · what to check before you install a skill · how to pin a skill to an exact version · where to find agent skills · keeping a team on the same skills · which agent file does what.