compiler-ac85 SKILL.md skillA
compiler-ac85 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/compiler-ac85@git:20261027.97fb25fPins git:20261027.97fb25f 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/compiler-ac85/SKILL.md- Versions recorded
- 12
- Latest version
- git:20261027.97fb25f, committed Oct 27, 2026
- First version recorded
- Sep 19, 2026
- Size
- 78,342 bytes
- Repository stars
- 3
- License
- MIT
Agent compiler for Intel 8085 (ac85): emit Zilog assembly for z88dk-z80asm -m8085 from standard C90. Data model, SMALLC ABI, stack frames, HL as ALU bus, BC/DE parking, 8085 extended ops, C90 shape → ISA lowering. Use for /compiler-ac85, "agent compiler 8085", "C compiler guide for 8085", "compile this C to 8085 assembly", "8085 C lowering". Do not use when invoking zcc, 80cc, or sccz80 as the compiler, or when editing src/80cc (those are compiler-80cc, compiler-sccz80, tool-zcc).
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
# C compiler guide — 8085 Compile **ISO C90** to **Zilog** 8085 assembly that `z88dk-z80asm -m8085` accepts. Load **`cpu-8085`** for the opcode map, flag effects, timings, and stack-access sequences. This card is the **C** layer: types, ABI, register assignment, and how C constructs map onto that ISA. Optimise from the **8085 instruction set**, not from Z80 habit. Extended ops (`ld de,sp+*`, `ld hl,(de)`, `ld (de),hl`, `sub hl,bc`, `rl de`, `sra hl`, `jp k` / `jp nk`) are first-class on every 8085. There is no IX, no `exx`, no native `djnz`, and no 2-byte `jr` (`18` is `rl de`). Assembler `jr` becomes a 3-byte `jp`. **8085-only listings write `jp`.** Dual-CPU library source may write `jr` (`cpu-8085`). **Shape before statements.** Name the C90 shape in a function (walking byte array, word swap, pre-dec-to-zero, struct cursor, …) and emit the ISA sequence for that shape. Do not lower a naïve `a[i]` / `i++` form when the shape is a pointer walk or an induction. ## C data model on 8085 Default **`char` is signed**. Little-endian. Integer promotions go to 16-bit `int`. `short` is 16-bit (same home as `int`). Struct members: `offset += size` (no 2-byte ABI holes). …
Read the whole file at its exact version.
How to install
mdr add feilipu/8085-skills/compiler-ac85@sha256:6e854ac86dd98173The line at the top of this page pins the label git:20261027.97fb25f, 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_vb6csfbmil7cesbl)
3 badge image fetches in 30 days. What the badge shows.
Versions
The registry has recorded 12 versions of this file, between Sep 19, 2026 and Oct 27, 2026, about one every 3 days.
| version | committed | commit | size | audit | |
|---|---|---|---|---|---|
| git:20261027.97fb25f latest | 2026-10-27 | 97fb25f | 78,342 B | A | view · diff |
| git:20261026.cbdc927 | 2026-10-26 | cbdc927 | 75,743 B | A | view · diff |
| git:20261017.e3a0662 | 2026-10-17 | e3a0662 | 73,959 B | A | view · diff |
| git:20260929.4a8a870 | 2026-09-29 | 4a8a870 | 70,944 B | A | view · diff |
| git:20260929.85d5fd4 | 2026-09-29 | 85d5fd4 | 70,813 B | A | view · diff |
| git:20260927.e4e41d5 | 2026-09-27 | e4e41d5 | 65,522 B | A | view · diff |
| git:20260921.85b9514 | 2026-09-21 | 85b9514 | 65,417 B | A | view · diff |
| git:20260921.2f39ee6 | 2026-09-21 | 2f39ee6 | 64,958 B | A | view · diff |
| git:20260920.88ac0a1 | 2026-09-20 | 88ac0a1 | 62,676 B | A | view · diff |
| git:20260920.d893132 | 2026-09-20 | d893132 | 61,204 B | A | view · diff |
| git:20260919.24cc48b | 2026-09-19 | 24cc48b | 45,005 B | A | view · diff |
| git:20260919.216763a | 2026-09-19 | 216763a | 43,321 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 (78342 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_vb6csfbmil7cesbl GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/compiler-ac85 GET https://markdownregistry.com/api/v1/blob/6e854ac86dd98173969ed6881172017fe528a30c48bd96a5f25f8ce4fbf0c7fe
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.