RetroPie #47–49: NGPC, Supervision, Sega Pico + Qualcomm BT + FS Metal Tests

Four repos land in one sprint: the RetroPie fleet hits 49 LAUNCHABLE systems with Neo-Geo Pocket Color, Supervision, and Sega Pico; sigil-drivers ships the Qualcomm/Atheros BT driver completing the four-vendor USB BT picture; and sigil-fs wires 19 more orphaned metal tests into the harness for a clean 354/354 ALL PASS. (sigil-retropie 51a038f, 46ee146, 8267c4d; sigil-drivers 6bff982; sigil-fs af792ad)

Neo-Geo Pocket Color — system #47

cores/ngpc.sg (51a038f): Toshiba TLCS-900H CPU stub (register file, LD r16, JR/CALL/RET/NOP/HALT) + K2GE graphics engine.

160×152 display; 4bpp 8×8 tiles; 256-entry RGB444 palette at $BEE0
k2ge_render_row: shift-register 4-plane expand — same shape as WSC's wsc_render_row
k2ge_color: RGB444→ARGB with ×17 scale — same formula as wsc.sg; the pattern is now a shared convention
Memory: 64 KB WRAM @$000000, 1 MB ROM @$200000, tile data @$A000, tile map @$B800 (20×19 tiles)

uart=47 PASS. apps/ngpc (10584 B, arm-el0), loads /roms/game.ngc (1 MB cap). 24320 non-black pixels screendump.

Neo-Geo Pocket Color (system #47) — K2GE 4bpp 160×152, RGB444 palette, 24320 non-black pixels

Supervision — system #48

cores/supervision.sg (46ee146): 65C02 (shared m6502.sg) + 160×160 4-shade LCD.

2bpp video RAM at $2000 (40 bytes/row, 4 pixels/byte MSB-left)
sv_render: unpack → shade(0-3) → ARGB (white / light-grey / dark-grey / black)
Bus seam: WRAM@$0000, VRAM@$2000, ROM@$8000
sv_run(N): N m6_step() calls per frame (~17556 cycles @ 4 MHz)

uart=48 PASS. apps/supervision (31200 B, arm-el0), loads /roms/game.sv. 25600 px 4-shade diagonal demo.

Supervision (system #48) — 65C02 + 4-shade 160×160 LCD, diagonal stripes demo

Sega Pico — system #49

cores/pico.sg (8267c4d): the shortest core in the fleet — a single function override on cores/genesis.sg. The Sega Pico (1993) uses identical 68000 + VDP hardware; only core_id differs (9293). All core ABI inherited via first-def-wins.

uart=49 PASS. apps/pico (82824 B, arm-el0), loads /roms/game.md (4 MB cap, same format as Genesis).

Sega Pico (system #49) — Genesis overlay, 320×224 5-stripe color demo

RetroPie fleet: 49 LAUNCHABLE systems (#1–49).

btqca — Qualcomm/Atheros Bluetooth

6bff982: QCA6174A, QCA9377, WCN3988, WCN6750, WCN6855 USB BT.

ROM firmware ships on-chip; host delivers NVM config patches via HCI_QCA_PS (0xFC0B = 64523)
NVM blob format: TLV records [tag_id LE16][dlen LE16][data]. btqca_replay_nvm walks the blob, calls btqca_send_ps per record
HCI_QCA_RESET (0xFC0C = 64524): applies patches + restarts. HCI_QCA_READ_APP_VER (0xFC19 = 64537): selects NVM file
State: 0=reset → 1=patching → 2=operational. btqca_op CLS_BT ABI

x86-runverify PASS: opcodes, 2-record NVM replay (14 B blob → 2 patches). The BT fleet now covers Intel / Realtek / Broadcom / Qualcomm — all four major USB BT vendors.

Driver	Vendor	Key mechanism
`btintel`	Intel	Firmware download via HCI_VS_INTEL
`btrealtek`	Realtek	ROM + config patch via HCI_VS_RTK
`btbcm`	Broadcom	Patchram via HCI_VS_BCM
`btqca`	Qualcomm/Atheros	NVM TLV patch replay via HCI_QCA_PS

sigil-fs metal test coverage

af792ad: 19 more orphaned tests wired into MANIFEST:

Crypto: hmac_metal, crypto_metal, corrupt_metal, cryptodata, datacorrupt
FS: fatfs, exfat, bootseed, access, root_metal, savestate, freelist, resolve, rmdir, unlink, version, large, st, fs_test

With prior batches (19 net + 22 btrfs/aead/sha256/CAS/CAP + 19 metal = 60 tests wired in total across 3 cleanup commits). Total harness: 354/354 ALL PASS — comprehensive, no orphans.