Table of Contents
Introduced in 1984, the Thomson MO5 is the first computer in the MO series. It will be discontinued in 1986, when the MO6 will replace it.
Like most 8bits computers, the MO5 has it's OS (aka Monitor) and a BASIC interpreter built in ROM. The floppy controller comes with an additional ROM, and will automatically boot floppies. The floppies contain an extended BASIC (Disc BASIC) that adds commands to the ROM one, mostly to help with disc access.
There are several versions of the MO5. The first revision is not compatible with the RAM expansion. All the later ones are. The MO5 was later upgraded to get a mechanical keyboard, and there was a “Michel Platini” limited edition (just a different color for the case).
Dimensions & Weight
- Pin 1: Motor control (set to 0 to spin motor)
- Pin 2: ground
- Pin 3: audio input
- Pin 4: data input
- Pin 5: data output
All pins except the audio input are TTL levels, straight from the 6821 PIA. The tape port can be used as a generic bit-banged serial port for other applications. The tape drive does all the filtering and cleanup of the tape data itself, and transmitsthe binary level that the computer needs for decoding.
The audio input comes from the second track of the tape drive, which has a stereo head. It is mixed with the 1bit sound from the machine and sent to the audio pins of the SCART connector.
|A0||VCO 16MHz in|