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scc68070: Split up internal register block handlers; add some RESET behavior (nw)

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This commit is contained in:
AJR 2019-09-12 15:45:41 -04:00
parent ca6d02b1e3
commit ccce9e7adb
2 changed files with 704 additions and 616 deletions
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1270
src/devices/machine/scc68070.cpp
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50
src/devices/machine/scc68070.h
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@ -266,6 +266,9 @@ protected:
virtual u64 execute_clocks_to_cycles(u64 clocks) const override { return (clocks + 2 - 1) / 2; }
virtual u64 execute_cycles_to_clocks(u64 cycles) const override { return (cycles * 2); }
// m68000_base_device overrides
virtual void m68k_reset_peripherals() override;
private:
void internal_map(address_map &map);
void cpu_space_map(address_map &map);
@ -273,8 +276,49 @@ private:
void update_ipl();
uint8_t iack_r(offs_t offset);
DECLARE_READ16_MEMBER(periphs_r);
DECLARE_WRITE16_MEMBER(periphs_w);
// Interrupts
uint8_t lir_r();
void lir_w(uint8_t data);
uint8_t picr1_r();
void picr1_w(uint8_t data);
uint8_t picr2_r();
void picr2_w(uint8_t data);
// I2C interface
uint8_t idr_r();
void idr_w(uint8_t data);
uint8_t iar_r();
void iar_w(uint8_t data);
uint8_t isr_r();
void isr_w(uint8_t data);
uint8_t icr_r();
void icr_w(uint8_t data);
uint8_t iccr_r();
void iccr_w(uint8_t data);
// UART interface
uint8_t umr_r();
void umr_w(uint8_t data);
uint8_t usr_r();
uint8_t ucsr_r();
void ucsr_w(uint8_t data);
uint8_t ucr_r();
void ucr_w(uint8_t data);
uint8_t uth_r();
void uth_w(uint8_t data);
uint8_t urh_r();
// Timers
uint16_t timer_r(offs_t offset, uint16_t mem_mask);
void timer_w(offs_t offset, uint16_t data, uint16_t mem_mask);
// DMA controller
uint16_t dma_r(offs_t offset, uint16_t mem_mask);
void dma_w(offs_t offset, uint16_t data, uint16_t mem_mask);
// MMU
uint16_t mmu_r(offs_t offset, uint16_t mem_mask);
void mmu_w(offs_t offset, uint16_t data, uint16_t mem_mask);
void uart_rx_check();
void uart_tx_check();
@ -297,7 +341,7 @@ private:
int m_int1_line;
int m_int2_line;
uint16_t m_lir;
uint8_t m_lir;
uint8_t m_picr1;
uint8_t m_picr2;
bool m_timer_int;