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Table of Contents
Port A
V.Link SPI
- IOA0: SPI clock
- IOA1: MOSI
- IOA2: MISO
- IOA3: Busy
- IOA4: Chip select
Console type
| Console | IOA14 | IOA15 |
|---|---|---|
| V.Smile | 0 | x |
| V.Smile Pocket | 0 | x |
| V.Smile Motion | 1 | 0 |
| Cyber Pocket | 1 | 1 |
Other
- IOA11: Only a pull down resitor?
- IOA12: Only a test point on the motherboard?
Port B
ROM and cartridge
- IOB0: extra address bit for the cartridge port, access second half of ROM
- IOB1: Set to 0 to enable cartridge ROM
- IOB2: Set to 0 to enable internal ROM
Power control
- IOB3: Labelled “RESTART”, not used?
- IOB4: “A/D”, related to the ADC?
- IOB5: Voltage detect (ADC measurement of battery level or power supply)
- IOB6: Pulled to ground by the ON button
- IOB7: Pulled to ground by the OFF button
Port C
Configuration
| Language | IOC3 | IOC2 | IOC1 | IOC0 |
|---|---|---|---|---|
| Italian | 0 | 0 | 1 | 0 |
| Chinese | 0 | 1 | 1 | 1 |
| Polish | 1 | 0 | 0 | 0 |
| Dutch | 1 | 0 | 0 | 1 |
| German | 1 | 0 | 1 | 1 |
| Spanish | 1 | 1 | 0 | 0 |
| French | 1 | 1 | 0 | 1 |
| UK English | 1 | 1 | 1 | 0 |
| US English | 1 | 1 | 1 | 1 |
IOC4: if 1: show logo animation at boot
Power control
- IOC6: audio output enablw
- IOC7: Power control
Controllers
- IOC8: Controller A request to send
- IOC9: Controller B request to send
- IOC10: Controller A clear to send
- IOC12: Controller B clear to send
- IOC13: UART Rx (from controller)
- IOC14: UART Tx (to controller)
- IOC15: Controller power?
