// license:BSD-3-Clause // copyright-holders:smf /* * am53cf96.h * */ #ifndef _AM53CF96_H_ #define _AM53CF96_H_ #pragma once #include "legscsi.h" #define MCFG_AM53CF96_IRQ_HANDLER(_devcb) \ devcb = &am53cf96_device::set_irq_handler(*device, DEVCB_##_devcb); // 53CF96 register set enum { REG_XFERCNTLOW = 0, // read = current xfer count lo byte, write = set xfer count lo byte REG_XFERCNTMID, // read = current xfer count mid byte, write = set xfer count mid byte REG_FIFO, // read/write = FIFO REG_COMMAND, // read/write = command REG_STATUS, // read = status, write = destination SCSI ID (4) REG_IRQSTATE, // read = IRQ status, write = timeout (5) REG_INTSTATE, // read = internal state, write = sync xfer period (6) REG_FIFOSTATE, // read = FIFO status, write = sync offset REG_CTRL1, // read/write = control 1 REG_CLOCKFCTR, // clock factor (write only) REG_TESTMODE, // test mode (write only) REG_CTRL2, // read/write = control 2 REG_CTRL3, // read/write = control 3 REG_CTRL4, // read/write = control 4 REG_XFERCNTHI, // read = current xfer count hi byte, write = set xfer count hi byte REG_DATAALIGN // data alignment (write only) }; class am53cf96_device : public legacy_scsi_host_adapter { public: // construction/destruction am53cf96_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock); // static configuration helpers template static devcb_base &set_irq_handler(device_t &device, _Object object) { return downcast(device).m_irq_handler.set_callback(object); } DECLARE_READ8_MEMBER(read); DECLARE_WRITE8_MEMBER(write); void dma_read_data(int bytes, UINT8 *pData); void dma_write_data(int bytes, UINT8 *pData); protected: // device-level overrides virtual void device_start(); virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr); private: static const device_timer_id TIMER_TRANSFER = 0; UINT8 scsi_regs[32]; UINT8 fifo[16]; UINT8 fptr; UINT8 xfer_state; UINT8 last_id; emu_timer* m_transfer_timer; devcb_write_line m_irq_handler; }; // device type definition extern const device_type AM53CF96; #endif