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machine/intelfsh.cpp: Support reading the busy/ready pin for Flash chips that have one. [R. Belmont]

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This commit is contained in:
arbee 2023-09-01 22:53:08 -04:00
parent 747f93d3a2
commit e81c0d609a
2 changed files with 12 additions and 0 deletions
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10
src/devices/machine/intelfsh.cpp
View File

@ -317,6 +317,15 @@ void intelfsh_device::device_start()
save_pointer( &m_data[0], "m_data", m_size); save_pointer( &m_data[0], "m_data", m_size);
} }
//-------------------------------------------------
// is_ready - emulates the *Busy/Ready pin on some
// flash devices.
//-------------------------------------------------
bool intelfsh_device::is_ready()
{
return (m_status & 0x80) ? true : false;
}
//------------------------------------------------- //-------------------------------------------------
// delay_tick - handle delayed commands/events // delay_tick - handle delayed commands/events
@ -332,6 +341,7 @@ TIMER_CALLBACK_MEMBER(intelfsh_device::delay_tick)
case FM_ERASEAMD4: case FM_ERASEAMD4:
m_flash_mode = FM_NORMAL; m_flash_mode = FM_NORMAL;
m_status = 0x80;
break; break;
} }
} }

2
src/devices/machine/intelfsh.h
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@ -15,6 +15,8 @@ class intelfsh_device : public device_t,
public: public:
uint8_t *base() { return &m_data[0]; } uint8_t *base() { return &m_data[0]; }
bool is_ready();
protected: protected:
// construction/destruction // construction/destruction
intelfsh_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, uint8_t bits, uint32_t size, uint8_t maker_id, uint16_t device_id); intelfsh_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock, uint8_t bits, uint32_t size, uint8_t maker_id, uint16_t device_id);