C++ (Cpp) required_device::c1_wの例

コード例 #1

ファイル: vt100.cpp プロジェクト: fesh0r/mame-full

void vt100_state::nvr_latch_w(u8 data)
{
	// data inverted due to negative logic
	m_nvr->c3_w(!BIT(data, 3));
	m_nvr->c2_w(!BIT(data, 2));
	m_nvr->c1_w(!BIT(data, 1));

	// C2 is used to disable pullup on data line
	m_nvr->data_w(BIT(data, 2) ? 0 : !BIT(data, 0));

	// SPDS present on pins 11, 19 and 23 of EIA connector
	m_rs232->write_spds(BIT(data, 5));
}