Oric Chess 0.1: our chess engine on the Atmos
Oric Chess 0.1, beta on Prophet: the Neo6502 Chess engine on the Oric Atmos, in 240 × 200 hi-res, menus, help, saved games on a Sedoric disk. Read the article →
Articles
All our articles, newest first: Oric, Neo6502, Minitel. Filter by tag:
14 article(s)
Neo6502 Chess 0.1: chess in assembly, online
Neo6502 Chess 0.1, beta on Prophet: a chess engine in 6502 assembly, pieces in relief, clocks, playing aids, online games through a Pico W modem. Read the article →
Le Manoir du Dr Genius returns, in isometric view
Le Manoir du Dr Genius, isometric edition (MDG-NG): Loriciels' Oric adventure as a point-and-click game on the Neo6502, beta 0.95.7 on Prophet. Read the article →
Using Phosphoneo: play, test, script and debug on the Neo6502
Using Phosphoneo, the Neo6502 emulator: real-time window, headless trials with screenshots and automatic typing, scripted and filmed play-throughs, debugging, save states, browser, tests — and its limits. Read the article →
Prophet 0.25: play in the browser, and the Oric
Prophet 0.25 on prophet.3617.fr: play in the browser (Phosphoneo and Phosphoric in WebAssembly), the Oric as a second platform with ProphetOric, required components, firmware category, CRC-32, a two-language site. Read the article →
Debugging the Neo6502 over SWD: a Pico W as a probe
Debugging the Neo6502 over SWD: a Pico W flashed with debugprobe, three wires (GP2, GP3, GND), OpenOCD, reading the running RP2040's memory, injected keystrokes, the core 0 rule — with photos of the bench. Read the article →
A DIR that switches off the screen: hunting a shared lock
On the Neo6502, the first DIR command in Hercules mode switched the screen off. Twelve fixes, eleven refuted by measurement, four miscalibrated instruments — and at the end, an SDK spinlock shared between the two cores, delaying the video interrupt by a single scanline. Read the article →
Building a Prophet server for the Neo6502
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. Read the article →
Porting: from Astéroric to AsteroNeo
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 — then the tests on a real board. Read the article →
3617 TACHIBANA: the site is available on Minitel
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, 139 screens, Oric and Neo6502 projects, ten paginated articles; how it is made (40×25, G2, G1 mosaic, validator), and what is not verified yet. Read the article →
Neo6502: a real 65C02 and an RP2040 for 30 euros — our work in progress
The Neo6502 (W65C02S + RP2040, firmware by Paul Robson) as seen by Tachibana: Phosphoneo, Neo6502kbd, Neo6502bbc, Trinity, AsteroNeo, Prophet, framing — now tested on a real board. Read the article →
Porting Asteroids to an Oric-1: what pushed back
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. Read the article →
Phosphoric 2.0: a cycle-stepped machine — and the claim we withdraw
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. Read the article →
Pushing the Oric's limits: five experimental extensions for the LOCI board
How a cycle-stepped emulator becomes a hardware test bench — with the ABI, registers and diagrams. Read the article →