diff options
Diffstat (limited to 'src/mame/drivers/tispeak.cpp')
-rw-r--r-- | src/mame/drivers/tispeak.cpp | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/src/mame/drivers/tispeak.cpp b/src/mame/drivers/tispeak.cpp index ca5be1e1769..7065b39093e 100644 --- a/src/mame/drivers/tispeak.cpp +++ b/src/mame/drivers/tispeak.cpp @@ -419,13 +419,15 @@ K28 modules: #include "snspellsp.lh" #include "tntell.lh" // keyboard overlay +namespace { + // The master clock is a single stage RC oscillator into TMS5100 RCOSC: // In an early 1979 Speak & Spell, C is 68pf, R is a 50kohm trimpot which is set to around 33.6kohm // (measured in-circuit). CPUCLK is this osc freq /2, ROMCLK is this osc freq /4. // The typical osc freq curve for TMS5100 is unknown. Let's assume it is set to the default frequency, // which is 640kHz for 8KHz according to the TMS5100 documentation. -#define MASTER_CLOCK 640_kHz_XTAL +#define MASTER_CLOCK 640000 class tispeak_state : public hh_tms1k_state @@ -505,7 +507,6 @@ private: u8 m_overlay; }; - void tispeak_state::machine_start() { hh_tms1k_state::machine_start(); @@ -1879,6 +1880,8 @@ ROM_START( k28m2 ) ROM_LOAD( "cm62084.vsm", 0x0000, 0x4000, CRC(cd1376f7) SHA1(96fa484c392c451599bc083b8376cad9c998df7d) ) ROM_END +} // anonymous namespace + // YEAR NAME PARENT CMP MACHINE INPUT CLASS INIT COMPANY FULLNAME FLAGS |