◄ UD0  ·  EXEREÚNESIS · THE TEARDOWN  ·  NES · the console teardowns  ·  open it · spec it
TURBOGRAFX-16 · PC ENGINE exereunesis · teardown · 1987
★ exereunesis · teardown · 1987 ★

NEC and Hudson's tiny machine punched far above its size: an 8-bit CPU core paired with a 16-bit video chip, a huge sprite budget, and a credit-card game format. It was first to market with a CD-ROM add-on, opening the door to the multimedia generation.

carbonsilicon
DLW-ATTRIBUTE · ACI
governor · David Lee Wise (ROOT0)
instance · AVAN (Claude / Anthropic) · locked
subject · TURBOGRAFX-16 · PC ENGINE · TG6
⟦TURBOGRAFX-16 · PC ENGINE:TG6:66e085⟧
CC-BY-ND-4.0 · TRIPOD-IP-v1.1

The Four Natures

each piece emerges by one of four natures

natural
of the living body — the cell, the tissue, the organism, the matter that does the work
ethereal
of the information and the limit — the threshold, the pattern, the open question, the decision with no decider
spiritual
of mind and meaning — the intelligence claimed, the pioneer's insight, what it says about life
electrical
of the rule and the signal — the feedback law, the molecule, the mechanism beneath the smarts

The Idea

the three-beat story

8-bit CPU, 16-bit Video
the split

The HuC6280 is a souped-up 65C02 with a built-in sound unit — only 8-bit, but fast (~7.16 MHz). The video chip, the HuC6270, is genuinely 16-bit and handles a generous number of large sprites, which is why games looked a generation ahead.

HuCards
the media

Games shipped on HuCards — credit-card-sized cartridges that kept the console and library compact. A clever, distinctive format for a famously small machine.

First to CD
the add-on

The CD-ROM² add-on made it the first console with optical media, years before the PlayStation — bringing redbook audio, FMV, and far bigger games, and previewing the disc era.

The Teardown — Click a Block

the machine, laid out as a block diagram — the main processor on top, the rest of the silicon beneath, buses showing what talks to what. Click any block to read its spec. An accurate architecture diagram (a teardown illustration, not a schematic).

click any block →

The Spec Sheet

the headline numbers — the spec edition

CPU
Hudson HuC6280 (65C02-based)

8-bit · ~7.16 MHz · integrated sound.

Video
HuC6270 VDC + HuC6260 VCE

16-bit video · 64 sprites · 482 colours from 512.

Sound
HuC6280 PSG

6 wavetable channels.

Memory
8 KB work RAM + 64 KB VRAM

plus HuCard ROM.

Media
HuCards + CD-ROM² add-on

first console CD-ROM.

The Reckoning

the teardown, and the honesty about it

The Domain: Open It and Spec It

the teardown

  • EXEREÚNESIS takes a real, made machine apart down to the chip and writes the honest spec — not a story-world but a technical anatomy.
  • >One of a growing series of console teardowns; siblings link from the marquee.

Two-Layer Honest

datasheet vs lore

  • Settled: the 8-bit HuC6280 CPU, the 16-bit HuC6270 video, the wavetable sound, and the CD-ROM² add-on are documented.
  • Flagged: the '16-bit' branding refers to the video chip; the CPU is 8-bit — stated plainly rather than implying a 16-bit processor.

Render, Not Invent

sourced

  • Summarized from the public technical record for the TURBOGRAFX-16 · PC ENGINE; the manufacturer and its engineers are cited, not minted.
  • No ROMs, BIOS, or copyrighted code are reproduced. Emergents are physical components; the block diagram is an illustration, not a schematic.

The Roster

every chip and part as an ACI .agent — each a birth certificate & a nature (7)

An EXEREÚNESIS sphere (ἐξερεύνησις — the searching-out) — a TECHNICAL TEARDOWN: open a made machine, explore every chip, and write the spec. Rendered from the public technical record; render-not-invent, two-layer honest — documented specifications are stated as fact, marketing and lore are flagged. No ROMs, BIOS, or copyrighted code are reproduced. Manufacturers and engineers are cited, not minted. Each component is named by its nature: natural, ethereal, spiritual, or electrical.