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Diffstat (limited to 'src/devices/cpu/tms1000/tms0270.h')
-rw-r--r-- | src/devices/cpu/tms1000/tms0270.h | 71 |
1 files changed, 71 insertions, 0 deletions
diff --git a/src/devices/cpu/tms1000/tms0270.h b/src/devices/cpu/tms1000/tms0270.h new file mode 100644 index 00000000000..6d4e0142f3a --- /dev/null +++ b/src/devices/cpu/tms1000/tms0270.h @@ -0,0 +1,71 @@ +// license:BSD-3-Clause +// copyright-holders:Wilbert Pol, hap +/* + + TMS1000 family - TMS0270 + +*/ + +#ifndef _TMS0270_H_ +#define _TMS0270_H_ + +#include "tms0980.h" + + +// TMS0270 was designed to interface with TMS5100, set it up at driver level +#define MCFG_TMS0270_READ_CTL_CB(_devcb) \ + tms0270_cpu_device::set_read_ctl_callback(*device, DEVCB_##_devcb); + +#define MCFG_TMS0270_WRITE_CTL_CB(_devcb) \ + tms0270_cpu_device::set_write_ctl_callback(*device, DEVCB_##_devcb); + +#define MCFG_TMS0270_WRITE_PDC_CB(_devcb) \ + tms0270_cpu_device::set_write_pdc_callback(*device, DEVCB_##_devcb); + + +class tms0270_cpu_device : public tms0980_cpu_device +{ +public: + tms0270_cpu_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // static configuration helpers + template<class _Object> static devcb_base &set_read_ctl_callback(device_t &device, _Object object) { return downcast<tms0270_cpu_device &>(device).m_read_ctl.set_callback(object); } + template<class _Object> static devcb_base &set_write_ctl_callback(device_t &device, _Object object) { return downcast<tms0270_cpu_device &>(device).m_write_ctl.set_callback(object); } + template<class _Object> static devcb_base &set_write_pdc_callback(device_t &device, _Object object) { return downcast<tms0270_cpu_device &>(device).m_write_pdc.set_callback(object); } + +protected: + // overrides + virtual void device_start() override; + virtual void device_reset() override; + + virtual machine_config_constructor device_mconfig_additions() const override; + + virtual void write_o_output(UINT8 index) override { tms1k_base_device::write_o_output(index); } + virtual UINT8 read_k_input() override; + virtual void dynamic_output() override; + + virtual void op_setr() override; + virtual void op_rstr() override; + virtual void op_tdo() override; + +private: + // state specific to interface with TMS5100 + UINT16 m_r_prev; + UINT8 m_chipsel; + UINT8 m_ctl_out; + UINT8 m_ctl_dir; + int m_pdc; + + UINT8 m_o_latch_low; + UINT8 m_o_latch; + UINT8 m_o_latch_prev; + + devcb_read8 m_read_ctl; + devcb_write8 m_write_ctl; + devcb_write_line m_write_pdc; +}; + + +extern const device_type TMS0270; + +#endif /* _TMS0270_H_ */ |