This group defines the available speed values that are able to be used with the Dreamcast's modem. The actual speed value consists of one of these in the lower 4 bits and one of the protocols in the upper 4 bits. Don't try to use any speeds not defined here, as bad things may happen.
It should be fairly obvious from the names what the speeds are (they're all expressed in bits per second).
#define MODEM_SPEED_1200 0x0 |
#define MODEM_SPEED_12000 0x5 |
#define MODEM_SPEED_14400 0x6 |
#define MODEM_SPEED_16800 0x7 |
#define MODEM_SPEED_19200 0x8 |
#define MODEM_SPEED_21600 0x9 |
#define MODEM_SPEED_2400 0x1 |
#define MODEM_SPEED_24000 0xA |
#define MODEM_SPEED_26400 0xB |
#define MODEM_SPEED_28000 0xC |
#define MODEM_SPEED_31200 0xD |
#define MODEM_SPEED_33600 0xE |
#define MODEM_SPEED_4800 0x2 |
#define MODEM_SPEED_7200 0x3 |
#define MODEM_SPEED_9600 0x4 |
#define MODEM_SPEED_AUTO 0x0 |