Bebhionn

DSP Effect

Send: RBL:

' Delay effect — edit and press Compile (Ctrl+Enter)
' Memory reads/writes are auto-aligned to odd DSP steps.
' (The assembler inserts NOPs if needed.)

#COEF
Send = %100
Fb = %40
Dry = %50
Wet = %75

#ADRS
wa = ms0.0
ra = ms200.0

#PROG
' Read delayed sample from ring buffer
NOP                                    ' step 0 (even) — align
MR MR[ra + DEC]                        ' step 1 (ODD) — memory read works
NOP                                    ' step 2 (even) — pipeline delay
IW MEMS00                              ' step 3 — store read value
' Write input + feedback to delay line
@ MIXS00 * Send + (MEMS00 * Fb +)     ' steps 4-5 — compute
NOP                                    ' step 6 (even) — align
> MW[wa + DEC]                         ' step 7 (ODD) — memory write works
' Output: dry + wet to left and right
@ MIXS00 * Dry + (MEMS00 * Wet +)     ' steps 8-9
> S1 EFREG00                           ' step 10 — left out
@ MIXS00 * Dry + (MEMS00 * Wet +)     ' steps 11-12
> S1 EFREG01                           ' step 13 — right out

=END

Parameters

Keyboard Map

Piano Keys (lower octave)

SC# DD# GF# HG# JA#

ZC XD CE VF BG NA MB

Piano Keys (upper octave)

2C# 3D# 5F# 6G# 7A#

QC WD EE RF TG YA UB IC+ OD+ PE+

Shortcuts

Space Play / Stop

↑↓ Navigate rows

←→ Note / Inst / Vol columns

Tab Next channel Shift+Tab Prev

. or ` Note off

Del Clear cell Bksp Clear + move up

0-F Hex input (Inst/Vol columns)

F1 Toggle this overlay

About Bebhionn

Bebhionn is a browser-based vertical tracker for composing music with the Sega Saturn's SCSP (YMF292-F) sound chip.

It uses a hardware-accurate WASM emulator — what you hear is what the Saturn plays. Exports SEQ + TON files directly.

github.com/jfsantos/bebhionn

Bebhionn

Instrument Editor

Envelope

Waveform

Routing

DSP Effect

Parameters