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fccpu30: Exposed possibility to turn off FPU in case it is not installed

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This commit is contained in:
Joakim Larsson Edstrom 2016-11-14 17:40:24 +01:00
parent 0d17e0ff72
commit 619334986f
1 changed files with 5 additions and 3 deletions
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8
src/mame/drivers/fccpu30.cpp
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@ -280,7 +280,7 @@ cpu30_state(const machine_config &mconfig, device_type type, const char *tag)
protected:
private:
required_device<cpu_device> m_maincpu;
required_device<m68000_base_device> m_maincpu;
required_device<ram_device> m_ram;
required_device<duscc68562_device> m_dusccterm;
@ -473,11 +473,13 @@ WRITE8_MEMBER (cpu30_state::flop_dmac_w){
LOG(("%s(%02x)\n", FUNCNAME, data));
}
// PIT#1 Port C TODO: implement timer+port interrupts and 68882 sense
#define FPCP_SENSE 0x40 /* Port C bit 6 is low if a Floating Point Co Processor is installed */
// PIT#1 Port C TODO: implement timer+port interrupts
// TODO: Connect PC0, PC1, PC4 and PC7 to B5 and/or P2 connector
READ8_MEMBER (cpu30_state::pit1c_r){
LOG(("%s\n", FUNCNAME));
return 0xff;
m_maincpu->has_fpu = 1; // Lets assume the FPCP is always installed ( which is default for 68030 atm )
return 0xff & ~FPCP_SENSE; // Should really be command line for the edge cases...
}
WRITE8_MEMBER (cpu30_state::pit1c_w){