Fairlight CMI IIx
In 1983, a major CMI update appeared: the Fairlight CMI IIx.
Several internal cards were modified. The two 6800 processors were replaced by 6809 processors, the random access memory changed from 64Ko to 256Ko, the control panel of the central unit was modified, a MIDI/SMPTE interface was proposed as an option, as well as a hard disk drive (one or two CMI, including Queen’s, featured the latter).
- Dual 8-bit 1 Mhz Motorola 6809 processors
- 8 channel cards with 16kb waveform RAM = 8 voices of polyphony
- 256Kb system RAM (QDOS)
- Two 8″ floppy disks: double sides, simple/double density (512Kb)
- Non-weighted 6 octave keyboard, featuring key velocity sensitivity, with 3 sliders and 2 switch buttons that can be alloted to various parameters (vibrato, volume, sustain… ). A second keyboard is proposed as an option (without the control buttons)
- Monochrome monitor which was used to visualise waveforms and to edit parameters: resolution was 512 x 256 pixels
- Alphanumeric keyboard
- Additive synthesis with FFT (Fast Fourier Transform)
- 32Khz 8-bit sampling
- Sequencer (page C) and graphic sequencer (page R)
- MCL: Musical Composition Language
- MIDI/SMPTE interface card (optional)
All the cards are arranged on the CMI-25 motherboard as follows:
|CMI-02||Master card: control of 8 channel cards, ADC sampling, timerfunctions for sequencer and MCL||1|
|CMI-28||General interface card: MIDI/SMPTE||2|
|CMI-01-A||Channel card with 16Kb waveform RAM|
CEM3320 (Rev 1 & 2) ou SSM2045 (Rev 3 & 4) Filter
|3 to 10|
|CMI-07||Analog interface card (optional): 16 inputs/outputs to control analog synthesizers||11|
|Q256||256Kb system RAM|
By default, the RAM card is located in slot 14.
A second can be installed in slot 13.
|13 to 14|
|Q014||4 port ACIA module (optional)||15|
|Q133||Processor control card||16|
|Q209||Dual 6809 processors||17|
|Q219||Lightpen/Graphics interface card – 16Kb Video RAM||18|
|QFC9||Floppy disk controller||19|
|Q077||Hard disk controller (optional)||20|