Tachibana — articles https://tachibana.eu/en/feed.xml 2026-09-16T00:00:00Z Tachibana Building a Prophet server for the Neo6502 https://tachibana.eu/en/neo6502/articles/prophet-serveur/ 2026-09-16T00:00:00Z 2026-09-16T00:00:00Z Go reimplementation of the Prophet server (Neo6502 program repository): byte-for-byte compatible protocol with prophet.neo, hardened point by point, HTTP + HTTPS, .neo verification, dynamic audit of 56 programs in Phosphoneo, web interface, production at prophet.3617.fr. Porting: from Astéroric to AsteroNeo https://tachibana.eu/en/neo6502/articles/asteroneo-portage/ 2026-09-16T00:00:00Z 2026-09-16T00:00:00Z Porting Astéroric (a study clone of Asteroids for the Oric-1) to the Neo6502: arcade logic kept, XOR rendering through the firmware API, half-open lines, 16-bit coordinates, 30 Hz, HID keyboard, 4-channel sound, the cc65 OptStackOps case, bit-for-bit tests in Phosphoneo — and what we have not checked yet. 3617 TACHIBANA: the site is available on Minitel https://tachibana.eu/en/minitel/articles/3617-tachibana/ 2026-09-16T00:00:00Z 2026-09-16T00:00:00Z tachibana.eu as a Minitel site on the PAVI 3617 (code TACHIBANA or TACHI): access through the 3617.fr web emulator, over TCP on pavi.3617.fr:3617, from an Oric with OricTel; FR/EN/ES, 163 screens, Oric and Neo6502 projects, six paginated articles; how it is made (40×25, G2, G1 mosaic, validator), and what is not verified yet. Neo6502: a real 65C02 and an RP2040 for 30 euros — our work in progress https://tachibana.eu/en/neo6502/articles/neo6502-chantiers/ 2026-09-15T00:00:00Z 2026-09-16T00:00:00Z The Neo6502 (W65C02S + RP2040, firmware by Paul Robson) as seen by Tachibana: Phosphoneo, Neo6502kbd, Neo6502bbc, firmware fork, AsteroNeo, Neo6502Prophet, framing — and what has not run on a board yet. Porting Asteroids to an Oric-1: what pushed back https://tachibana.eu/en/asteroric/articles/porter-asteroids/ 2026-09-14T00:00:00Z 2026-09-14T00:00:00Z Forty phases to fit Asteroids into 20,000 cycles per frame: the budget that did not hold, XOR drawing and its vanishing vertices, the VSync that does not exist, flicker, the ROM we bypass, the BSS, sound borrowed from another machine, and what the emulator was hiding. Phosphoric 2.0: a cycle-stepped machine — and the claim we withdraw https://tachibana.eu/en/phosphoric/articles/phosphoric-2/ 2026-09-12T00:00:00Z 2026-09-12T00:00:00Z What Phosphoric claimed and why it was wrong, what version 2.0 changed (65x02 oracle, master clock, VIA, ULA, PSG, savestates), what changes visibly, and what we still do not claim. Pushing the Oric's limits: five experimental extensions for the LOCI board https://tachibana.eu/en/phosphoric/articles/loci-extensions/ 2026-09-04T00:00:00Z 2026-09-04T00:00:00Z How a cycle-stepped emulator becomes a hardware test bench — with the ABI, registers and diagrams.