diff options
Diffstat (limited to 'src/devices/bus/ti99/internal/datamux.cpp')
-rw-r--r-- | src/devices/bus/ti99/internal/datamux.cpp | 4 |
1 files changed, 4 insertions, 0 deletions
diff --git a/src/devices/bus/ti99/internal/datamux.cpp b/src/devices/bus/ti99/internal/datamux.cpp index d87b2df75e6..8359e213d8d 100644 --- a/src/devices/bus/ti99/internal/datamux.cpp +++ b/src/devices/bus/ti99/internal/datamux.cpp @@ -205,6 +205,9 @@ void datamux_device::setaddress_all(uint16_t addr) // Cartridge ROM bool iscartrom = ((addr & 0xe000)==0x6000); + // Speech (1001 0wxx xxxx xxx0) + bool sbe = ((addr & 0xf801)==0x9000) && validaccess; + // Always deliver to GROM so that the select line may be cleared line_state gsq = isgrom? ASSERT_LINE : CLEAR_LINE; if (isgrom) m_grom_idle = false; @@ -228,6 +231,7 @@ void datamux_device::setaddress_all(uint16_t addr) // I/O port gets all accesses m_memen_state = ASSERT_LINE; m_ioport->memen_in(m_memen_state); + m_ioport->sbe(sbe); m_ioport->setaddress_dbin(addr, m_dbin); } |