SEMATOR
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GAME GUIDE / 1.1.320

Xenon

The Bitmap Brothers' first game. Transform between fighter and tank to survive four sectors.

Verified editionsControlsEnhancements & editions
SEMATOR CONTROL DECK

Your controls, at a glance.

Joystick moves; fire shoots; Space transforms. Use Fire / Space for the game's prompts. Transform is independent of the optional wiggle setting.

SemaTor generic controller body

Select a button to see its action.

Original SemaTor controller illustration. Face buttons 1–4 correspond to south, east, west and north. A/B/X/Y in the table are SDL layout names; your pad’s printed labels may differ.

Default gamepad mappings
ControlAction
Move (joystick)
Move (joystick)
Fire
Fire
Transform (Space)
Transform (Space)
Unassigned
Fire
Unassigned
Unassigned
Session menu (F11)
SemaTor settings (F12)
Unassigned axis / click
Left stick click / Guide / extra buttonsUnassigned by default. Device or system Guide behaviour can vary.

Keyboard & mouse

Default keyboard joystick mapping: arrow keys move, Left Ctrl fires and Space sends the original Space key. Original game keys remain available.

These are release defaults, not your saved remaps. Open F11 → Controls for this game for live mappings, or F12 → Controls to change them. Start and Back remain reserved for SemaTor menus. Mouse speed is adjustable. One active host gamepad is supported; two-player modes do not imply two simultaneous gamepads.

CHOOSE YOUR DISK

Verified editions & checksums

These are the exact identities used by the enhanced profiles in SemaTor 1.1.320. A recognised profile is not a promise that every level, option or graphics device has been tested.

Existing exact enhanced profile edition; no new full-game certification in 1.1.320.

Supplied disk image

Xenon.st · 409600 bytes

Disk-image SHA-256: 660e544ffa7eb8e0f9201614711f5d4b2a935870bb89f5ea707fed314e056f9e

Compare the extracted .st or .stx file, not its ZIP. Windows PowerShell: Get-FileHash -Algorithm SHA256 "your-disk.stx". Linux: sha256sum "your-disk.stx". A different disk hash may still contain a supported program; use the profile identities below.

Enhanced profile identities
Edition / programIdentityBytes
Xenon (1988, The Bitmap Brothers)
ERIC.PRG|XENON.PRG
raw program-text SHA-1
5a831978b09937ce5bfafa94ffafa49745805c7e
46414

Program SHA-1 covers the raw executable text before relocation, excluding its file header. Boot SHA-1 covers the decoded 512-byte boot sector. Neither is the checksum of the whole PRG, STX or ZIP. SemaTor’s library problem-report draft includes the executable SHA-1 and whether it is exactly recognised.

Download the edition/checksum list. If your edition is different, report its identity before assuming its enhanced profile is compatible.

OPTIONS BY EDITION

Make it your game.

Names match the release profiles, including experimental and practice options. Availability depends on the recognised disk edition. A matching filename alone does not verify an edition; untested releases may behave differently.

Xenon (1988, The Bitmap Brothers)

Practice / cheat

INFINITE LIVES

Keep playing without running out of lives.

Practice / cheat

NO ENEMY WAVES

Disable enemy waves for practice.

Enhancement

PREVENT ACCIDENTAL TRANSFORM

Stops left-right wiggles changing form; keeps the Transform button

Enhancement

MODERN SOUND ENGINE

Dedicated effect voice; prevents effects stealing music channels

Enhancement

LAYERED MUSIC + EFFECTS

Keeps music playing behind effects using the existing Xenon mixer

Enhancement

60 HZ MUSIC CLOCK

Optional faster music-driver clock; OFF keeps original PAL 50 Hz

Playing on Android or Thor?

Android and dual-screen controls remain in testing. Touch layouts can differ from desktop gamepad defaults. Mega lo Mania’s Thor panel and direct-touch input need device validation; this guide does not certify every touch layout.