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-rw-r--r--src/mame/acorn/bbcb.cpp5
1 files changed, 4 insertions, 1 deletions
diff --git a/src/mame/acorn/bbcb.cpp b/src/mame/acorn/bbcb.cpp
index db2f7158edf..e4c12db7058 100644
--- a/src/mame/acorn/bbcb.cpp
+++ b/src/mame/acorn/bbcb.cpp
@@ -270,6 +270,10 @@ void bbcb_state::update_sdb()
{
uint8_t const latch = m_latch->output_state();
+ // sound
+ if (!BIT(latch, 0))
+ m_sn->write(m_sdb);
+
// speech
if (m_vsp)
{
@@ -457,7 +461,6 @@ void bbcb_state::bbca(machine_config &config)
config.set_default_layout(layout_bbc);
LS259(config, m_latch);
- m_latch->q_out_cb<0>().set([this](int state) { if (!state) m_sn->write(m_sdb); });
m_latch->q_out_cb<3>().set(m_kbd, FUNC(bbc_kbd_device::write_kb_en));
m_latch->q_out_cb<6>().set_output("capslock_led");
m_latch->q_out_cb<7>().set_output("shiftlock_led");