Game Maker by Eagle - powered by MADS assembler

Tile Bank (128) Skip odd px

PNG sliced into 16×16 tiles. Auto-picks palettes. Skip odd = halve source width.

Tile Editor — Tile 0

Pixel: —

Tile Palette:

Draw Color:

Sprite Bank (128) Skip odd px

PNG sliced into 8×16 sprites. Best-fit to existing palettes. Skip odd = halve source width.

Sprite Editor — Sprite 0

Pixel: —

Palette:

Draw Color:

Sprite Properties:

Type: Width: Height: Collision: Col X: Col Y: Col W: Col H: Anim Frames: Anim Speed: Anim Mode: Preview:

—

Offset X: Offset Y: Trajectory: Traj Category: Traj Type: Traj Speed: Traj Dir: Hit Points: Damage: Layer:

Atagle Entries — Scanline Commands

Horizontal lines at specific Y scanlines. Click map in Atagle mode to place. Right-click to delete.

New cmd:

Palettes (0–7) — Shared by Tiles & Sprites

Music Player

Format: Load file:

No file loaded. Load a .sap/.rmt or .sid file to begin.

Track/Subsong:

Vol: 75%

POKEY Channels

CH1

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CH2

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CH3

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CH4

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Sound FX Editor

Sound Chip:

Presets:

SFX Slot: Name:

TIA — 2 channels, 5-bit freq, 4-bit control

Control (0-15):

Freq (0-31): 15 Vol (0-15): 8

POKEY — 4 channels, 8-bit freq, distortion control

Distortion (AUDC):

Freq (0-255): 128 Vol (0-15): 8

SN76489 — 3 tone + 1 noise channel, 10-bit freq

Channel: Noise type: Noise rate:

Freq (0-1023): 256 Attn (0-15): 2

SID 6581/8580 — 3 voices, 16-bit freq, ADSR, waveforms

Waveform: Pulse W (0-4095): 2048

Freq (0-65535): 8000

A (0-15): 0 D (0-15): 9 S (0-15): 0 R (0-15): 0

Filter freq (0-2047): 1024 Resonance (0-15): 0

Frame Editor Dur: FPC: 0 frames

Freq

Vol

Ctrl

Wave

Click/drag bars to edit. Right-click to delete frame.

▸ Frame Table (raw values)

No frames yet.

HUD Editor (320A — 2 lines)

BG Color:

Palettes — CxP2:

Line 1 — Labels (top):

Left text: Pal: | Right text: Pal:

Line 2 — Values (bottom):

Left value: Pal: | Right value: Pal:

Digits: Zero-pad

Preview (320×16, 2 lines):

320A: 1bpp, CxP2, top=labels, bottom=scores

Title Screen (160B — 12 colors + BG)

Import PNG: Skip odd px X: Y:

BG Color: Colors: 0/12

Palette:

Preview (160×192, 2× wide):

No image loaded.

Game Over (160B — 12 colors + BG)

Import PNG: Skip odd px X: Y:

BG Color: Colors: 0/12

Palette:

Preview (160×192, 2× wide):

No image loaded.

High Score (320A — 8 palettes, CxP2 per char)

Style: Entries: Font:

BG Color:

8 Palettes — CxP2 (fg color per palette):

Title pal: Rank pal: Score pal: Name pal: Header pal: Line pal:

Title: Rank # Name Digits:

Headers: Rank: Name: Score:

Sample Entries:

Preview (320×192):

320A: 1bpp, each char selects 1 of 8 palettes, CxP2 = foreground

Save / Load Project

Chunk-based format — forward compatible. Older versions skip unknown chunks.

Export ROM

Save *.S78 format compatible with SN/EAGLE carts and Gopher7800 emulator.

Tile Bank (128) Skip odd px

Tile Editor — Tile 0

Sprite Bank (128) Skip odd px

Sprite Editor — Sprite 0

Atagle Entries — Scanline Commands

Palettes (0–7) — Shared by Tiles & Sprites

Music Player

Sound FX Editor

HUD Editor (320A — 2 lines)

Title Screen (160B — 12 colors + BG)

Game Over (160B — 12 colors + BG)

High Score (320A — 8 palettes, CxP2 per char)

Save / Load Project

Export ROM

Export / Import (Legacy)

Pick Atari Color (Hue × Luminance)

Tile Bank (128) Import PNG Skip odd px

Tile Editor — Tile 0

Sprite Bank (128) Import PNG Skip odd px

Sprite Editor — Sprite 0

Atagle Entries — Scanline Commands

Palettes (0–7) — Shared by Tiles & Sprites

Music Player

Sound FX Editor

HUD Editor (320A — 2 lines)

Title Screen (160B — 12 colors + BG)

Game Over (160B — 12 colors + BG)

High Score (320A — 8 palettes, CxP2 per char)

Save / Load Project

Export ROM

Export / Import (Legacy)

Pick Atari Color (Hue × Luminance)

Tile Bank (128) Skip odd px

Sprite Bank (128) Skip odd px