Home / feilipu / 8085-skills · .agents/skills/methodology-measure/SKILL.md · GitHub

methodology-measure skillA

methodology-measure is agent-read markdown (skill) from feilipu/8085-skills: How to measure and prove z88dk library changes: z88dk-ticks TIMER/hotspots, map/nm proof, suite gates, A/B library swaps, math32 multi-CPU rebuilds, classic +test benchmarks, wiki number paste rules. Use when optimising, explaining deltas, or running +test -clib=8085 benches..

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What the file says

# Methodology — measure, A/B, benches

This skill covers **host tools** used with z88dk when writing or optimising
8085 (and portable 8080/gbz80) library code. Opcode and coding rules stay in
**`cpu-8085`**; here the focus is *how to prove*
what is slow, what changed, and what is correct — plus how **`z88dk-copt`**
shapes compiler output and what library authors must do by hand.

Assume a built z88dk tree with `bin/` on `PATH` and `ZCCCFG` pointing at
`lib/config` (see env below).

---

## Environment (always set)

```bash
export PATH=/path/to/z88dk/bin:$PATH
export ZCCCFG=/path/to/z88dk/lib/config
```

Rebuild only what you touch (example: classic 8085 runtime object + crt0 lib):

```bash
# after editing libsrc/l/sccz80/7-8085/...
rm -f libsrc/classic/z80_crt0s/obj/8085/l/sccz80/7-8085/.../file.o
rm -f libsrc/classic/z80_crt0s/obj/8085-crt0
make -C libsrc/classic/z80_crt0s obj/8085-crt0
# relink and install crt0
(cd libsrc && TYPE=8085 z88dk-z80asm -d -I"$ZCCCFG/.." -m8085 \
  -DSTANDARDESCAPECHARS -x8085_crt0 @classic/8085.lst)
cp -f libsrc/8085_crt0.lib lib/clibs/
```

### Math32 / multi-CPU float libs (force rebuild)
…

Read the whole file at its exact version.

How to install

Latest version
mdr add feilipu/8085-skills/methodology-measure@git:20260920.88ac0a1
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mdr add feilipu/8085-skills/methodology-measure@sha256:3d28a27be934d380

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Versions

versioncommittedcommitsizeaudit
git:20260920.88ac0a1 latest2026-09-20 88ac0a1 32,833 BA view · diff
git:20260920.d8931322026-09-20 d893132 32,493 BA view · diff
git:20260919.216763a2026-09-19 216763a 30,639 BA view · diff
git:20260918.86bba032026-09-18 86bba03 30,632 BA view · diff
git:20260918.792b4a62026-09-18 792b4a6 30,618 BA view · diff
git:20260918.95c45882026-09-18 95c4588 28,494 BA view · diff
git:20260821.71d84842026-08-21 71d8484 27,054 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 (32833 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_da3hizukpu6ercmg
GET https://markdownregistry.com/api/v1/resolve?ref=feilipu/8085-skills/methodology-measure
GET https://markdownregistry.com/api/v1/blob/3d28a27be934d380e72078165d9371d1e11ee63486e2c327110c137803543060

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