The Atari "1040 ST" (STf / STm / STfm)
| CPUs | Motorola MC68000, 16/32 Bit, 8MHz |
| Memory | 1 MB of RAM, expandable to 4 MB of RAM |
| Graphics | 512 color pallette, up to 16 simultaneous colors (all 512 with 3rd party software) |
| Sound | Yamaha 3-voice FM, 8bit mono |
| I/O | Cartridge port, 40-pin Joystick port, 9-pin D-Type Mouse / Secondary Joystick port, 9-pin D-Type RS232C Serial port, 25-pin, 19.2 kbps Parallel port, 25-pin MIDI in, MIDI out / thru External floppy port DMA / ACSI port, 19-pin Monitor port, ST mono, ST color RF Modulator |
| Storage | 3,5" FDD, 360kBytes or 720kBytes (internal) Optional internal HDDs |
| Keyboard | 94 keys (84 + 10 function keys) |
The other models:
| 1040 STf | Same as 1040ST but no RF modulator |
| 1040 STm | RF modulator nut no internal FDD |
| 1040 STfm | RF modulator, 720kB internal FDD |