diff options
Diffstat (limited to 'src/mess/machine/comx_fd.h')
-rw-r--r-- | src/mess/machine/comx_fd.h | 82 |
1 files changed, 82 insertions, 0 deletions
diff --git a/src/mess/machine/comx_fd.h b/src/mess/machine/comx_fd.h new file mode 100644 index 00000000000..32f36a0cef4 --- /dev/null +++ b/src/mess/machine/comx_fd.h @@ -0,0 +1,82 @@ +/********************************************************************** + + COMX-35 Disk Controller Card emulation + + Copyright MESS Team. + Visit http://mamedev.org for licensing and usage restrictions. + +**********************************************************************/ + +#pragma once + +#ifndef __COMX_FD__ +#define __COMX_FD__ + + +#include "emu.h" +#include "formats/basicdsk.h" +#include "formats/comx35_dsk.h" +#include "imagedev/flopdrv.h" +#include "machine/comxexp.h" +#include "machine/wd17xx.h" + + + +//************************************************************************** +// TYPE DEFINITIONS +//************************************************************************** + +// ======================> comx_fd_device + +class comx_fd_device : public device_t, + public device_comx_expansion_card_interface +{ +public: + // construction/destruction + comx_fd_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); + + // optional information overrides + virtual const rom_entry *device_rom_region() const; + virtual machine_config_constructor device_mconfig_additions() const; + + // not really public + DECLARE_WRITE_LINE_MEMBER( intrq_w ); + DECLARE_WRITE_LINE_MEMBER( drq_w ); + +protected: + // device-level overrides + virtual void device_start(); + virtual void device_reset(); + virtual void device_config_complete() { m_shortname = "comx_fd"; } + + // device_comx_expansion_card_interface overrides + virtual void comx_ds_w(int state); + virtual void comx_q_w(int state); + virtual UINT8 comx_mrd_r(offs_t offset, int *extrom); + virtual UINT8 comx_io_r(offs_t offset); + virtual void comx_io_w(offs_t offset, UINT8 data); + +private: + inline void update_ef4(); + + // internal state + required_device<device_t> m_fdc; + required_device<device_t> m_floppy0; + required_device<device_t> m_floppy1; + + // floppy state + int m_ds; // device select + UINT8 *m_rom; + int m_q; // FDC register select + int m_addr; // FDC address + int m_intrq; // interrupt request + int m_drq; // data request + int m_disb; // data request disable +}; + + +// device type definition +extern const device_type COMX_FD; + + +#endif |