Doom was originally designed in 1993 for 32-bit DOS computers with 4 MB of RAM. It's mostly written in C code with very little assembly code. It has been ported to all kinds of systems. Usually these systems are 32-bit or more and have a flat memory model.
Doom8088: Motorola 68000 Edition is a port of Doom for Atari ST, AT&T UNIX PC and Sinclair QL computers with at least 512 kB of RAM (1 MB recommended) and a Motorola 68000, 68008 or 68010 CPU. It's based on Doom8088, a port of Doom for 16-bit DOS computers. Download Doom8088: Motorola 68000 Edition here.
What's special?:
- Supports only Doom 1 Episode 1
- Rotating overlaid automap
- Only demo3 is supported
- 16 color mode (Atari ST only)
- 8 color mode (Sinclair QL only)
- 2 color mode
- PC speaker like sound effects (Atari ST only)
- No music
- No texture mapped floors and ceilings
- No light diminishing
- No saving and loading
- No multiplayer
- No PWADs
- No screen resizing
- No mouse and joystick support
Known bugs:
- When there's not enough memory for a texture, one color is drawn
- When there's not enough memory for the intermission screen, the last few frames of gameplay are shown instead
| Action | Atari ST | Sinclair QL | AT&T UNIX PC |
|---|---|---|---|
| Fire | Ctrl | Ctrl | / |
| Use | Enter & Space | Enter & Space | Enter & Space |
| Sprint | Shift | Shift | not available |
| Walk | Arrow keys | Arrow keys | Arrow keys & 8 & 2 & 4 & 6 |
| Strafe | Alt | Alt | not available |
| Strafe left and right | < & > | < & > | < & > |
| Automap | Tab | Tabulate | Tab |
| Automap zoom in and out | + & - | + & - | + & - |
| Automap follow mode | F | F | F |
| Weapon up and down | [ & ] | [ & ] | [ & ] |
| Menu | Esc | Esc | Esc |
| Quit to OS | F10 | not available | Shift + Q |
| Code | Effects | Notes |
|---|---|---|
| IDCHOPPERS | Chainsaw | |
| IDDQD | God mode | |
| IDKFA | Weapons & Keys | |
| IDFA | Weapons | |
| IDSPISPOPD | No Clipping | |
| IDBEHOLDV | Invincibility | |
| IDBEHOLDS | Berserk | |
| IDBEHOLDI | Invisibility | |
| IDBEHOLDR | Radiation shielding suit | |
| IDBEHOLDA | Auto-map | |
| IDBEHOLDL | Lite-Amp Goggles | |
| IDCLEV | Exit Level | |
| IDEND | Show end text | |
| IDROCKET | Enemy Rockets | (GoldenEye) |
| IDRATE | Toggle FPS counter | Divide by 10 to get the real FPS |
| Command line argument | Effect |
|---|---|
-nosfx |
Disable sound effects |
-nosound |
Disable sound effects |
-timedemo demo3 |
Run benchmark |
| Platform | Platform specific code | Compiler | Build script | Additional information |
|---|---|---|---|---|
| Atari ST | i_ast.c, i_astv16.c |
m68k-atari-mintelf binutils, GCC 14, MiNTLib | bast16h.sh, bast16m.sh, bast16l.sh |
320x200 16 color mode, high/medium/low detail mode |
| Atari ST | i_ast.c, i_astv2.c |
m68k-atari-mintelf binutils, GCC 14, MiNTLib | bast2.sh, bast520.sh |
640x200 4 color mode, 2 colors are usedDOOM520.TOS is for computers with 512 kB of RAM. It goes from the first level immediately to the last level. |
| AT&T UNIX PC | i_3b1.c, i_3b1v.c |
unixpc-gcc | b3b1.sh |
The build script generates speed.o and space.o. These files need to be linked to create doom8088. |
| Sinclair QL | i_ql.c, i_qlv8.c |
qdos-gcc | bql8.bat |
256x256 8 color mode |
| Sinclair QL | i_ql.c, i_qlv2.c |
qdos-gcc | bql2.bat |
512x256 4 color mode |
| IBM PC 16-bit | i_ibm.c, i_vcgabw.c |
gcc-ia16 | bcgabw.sh |
See Doom8088 |
Doom8088: Motorola 68000 Edition needs an IWAD file that has been preprocessed by jWadUtil.