mirror of
https://github.com/holub/mame
synced 2025-05-30 09:33:05 +03:00
cc16777cce
READ/WRITE_DEVICE*_HANDLERs are now passed an address_space &, and the 8-bit variants get a mem_mask as well. This means they are now directly compatible with the member function delegates. Added a generic address space to the driver_device that can be used when no specific address space is available. Also added DECLARE_READ/WRITE_DEVICE*_HANDLER macros to declare device callbacks with default mem_mask parameters. [Aaron Giles]
52 lines
1.6 KiB
C++
52 lines
1.6 KiB
C++
/*
|
|
Hitachi HD63450 DMA Controller
|
|
*/
|
|
|
|
#include "emu.h"
|
|
|
|
struct hd63450_intf
|
|
{
|
|
const char *cpu_tag;
|
|
attotime clock[4];
|
|
attotime burst_clock[4];
|
|
void (*dma_end)(running_machine &machine,int channel,int irq); // called when the DMA transfer ends
|
|
void (*dma_error)(running_machine &machine,int channel, int irq); // called when a DMA transfer error occurs
|
|
int (*dma_read[4])(running_machine &machine,int addr); // special read / write handlers for each channel
|
|
void (*dma_write[4])(running_machine &machine,int addr,int data);
|
|
};
|
|
|
|
int hd63450_read(device_t* device, int offset, UINT16 mem_mask);
|
|
void hd63450_write(device_t* device,int offset, int data, UINT16 mem_mask);
|
|
void hd63450_single_transfer(device_t* device, int x);
|
|
void hd63450_set_timer(device_t* device, int channel, attotime tm);
|
|
|
|
int hd63450_get_vector(device_t* device, int channel);
|
|
int hd63450_get_error_vector(device_t* device, int channel);
|
|
|
|
class hd63450_device : public device_t
|
|
{
|
|
public:
|
|
hd63450_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
|
|
~hd63450_device() { global_free(m_token); }
|
|
|
|
// access to legacy token
|
|
void *token() const { assert(m_token != NULL); return m_token; }
|
|
protected:
|
|
// device-level overrides
|
|
virtual void device_config_complete();
|
|
virtual void device_start();
|
|
private:
|
|
// internal state
|
|
void *m_token;
|
|
};
|
|
|
|
extern const device_type HD63450;
|
|
|
|
|
|
#define MCFG_HD63450_ADD(_tag, _config) \
|
|
MCFG_DEVICE_ADD(_tag, HD63450, 0) \
|
|
MCFG_DEVICE_CONFIG(_config)
|
|
|
|
DECLARE_READ16_DEVICE_HANDLER( hd63450_r );
|
|
DECLARE_WRITE16_DEVICE_HANDLER( hd63450_w );
|