/* Fast CPU reset and Gate A20 0 - Fast CPU reset 1 - Fast Gate A20 */ void cs4031_device::sysctrl_w(uint8_t data) { LOGIO("cs4031_device::sysctrl_w: %u\n", data); fast_gatea20(BIT(data, 1)); if (m_cpureset == 0 && BIT(data, 0)) { // pulse reset line m_write_cpureset(1); m_write_cpureset(0); } m_cpureset = BIT(data, 0); }
void cs4031_device::emulated_kbreset(int state) { if (BIT(m_registers[SOFT_RESET_AND_GATEA20], 4)) { // kbreset (input) is active low // cpureset (output) is active high m_write_cpureset(!state); } }