Leds
Many MSX-computers have LEDs in them and sometimes it is possible to change the LED's status by software.
| Type | Remark |
|---|---|
| Power | This LED (if available) is directly connected to the power supply unit and can't be changed by software. |
| Caps Lock | Available in most MSX compatible computers and can be changed trough PPI port C (I/O #AA), bit 6 |
| Kana Lock | This LED is available in Japanese MSX computers and its status can be changed using PSG register 15, bit 7 |
| Pause | This LED is available in some MSX2, most MSX2+ and all Turbo R models. In the Turbo R it can be changed trough I/O #A7, bit 0 |
| CPU (turboR) | Can be changed through I/O #A7, bit 7 |
| Disk drive | MSX disk drives have leds, but usually diskdrive leds are linked to disk motor signal, so turning the led on/off also toggles disk drive motor on/off. The way to change the led/motor status depends of MSX model & manufacturer. For example in Panasonic MSX tR Diskdrive led & motor control can be accessed trough address #7FF2, bit 4 in slot 3-2 |