WD_COMMAND_PHASE
write_wd33c93(regs, WD_COMMAND_PHASE, 0x41);
write_wd33c93(regs, WD_COMMAND_PHASE, 0x45);
write_wd33c93(regs, WD_COMMAND_PHASE, 0);
write_wd33c93(regs, WD_COMMAND_PHASE, 0x45);
phs = read_wd33c93(regs, WD_COMMAND_PHASE);
write_wd33c93(regs, WD_COMMAND_PHASE, 0x50);
write_wd33c93(regs, WD_COMMAND_PHASE, 0x45);