diff options
Diffstat (limited to 'src/devices/machine/ds128x.h')
-rw-r--r-- | src/devices/machine/ds128x.h | 25 |
1 files changed, 22 insertions, 3 deletions
diff --git a/src/devices/machine/ds128x.h b/src/devices/machine/ds128x.h index 671d3ee0a6f..7ade1bfa431 100644 --- a/src/devices/machine/ds128x.h +++ b/src/devices/machine/ds128x.h @@ -5,10 +5,8 @@ #include "mc146818.h" -#define MCFG_DS12885_ADD(_tag) \ - MCFG_DEVICE_ADD(_tag, DS12885, XTAL(32'768)) -// ======================> mc146818_device +// ======================> ds12885_device class ds12885_device : public mc146818_device { @@ -17,6 +15,8 @@ public: ds12885_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 32'768); protected: + ds12885_device(const machine_config &mconfig, device_type type, const char *tag, device_t *owner, uint32_t clock); + virtual int data_size() override { return 128; } virtual int get_timer_bypass() override; }; @@ -24,4 +24,23 @@ protected: // device type definition DECLARE_DEVICE_TYPE(DS12885, ds12885_device) +// ======================> ds12885ext_device + +class ds12885ext_device : public ds12885_device +{ +public: + // construction/destruction + ds12885ext_device(const machine_config &mconfig, const char *tag, device_t *owner, uint32_t clock = 32'768); + + // read/write access to extended ram + uint8_t read_extended(offs_t offset); + void write_extended(offs_t offset, uint8_t data); + +protected: + virtual int data_size() override { return 256; } +}; + +// device type definition +DECLARE_DEVICE_TYPE(DS12885EXT, ds12885ext_device) + #endif // MAME_MACHINE_DS128X_H |