diff options
Diffstat (limited to 'src/devices/bus/vip/vp575.c')
-rw-r--r-- | src/devices/bus/vip/vp575.c | 317 |
1 files changed, 317 insertions, 0 deletions
diff --git a/src/devices/bus/vip/vp575.c b/src/devices/bus/vip/vp575.c new file mode 100644 index 00000000000..c7801e9c414 --- /dev/null +++ b/src/devices/bus/vip/vp575.c @@ -0,0 +1,317 @@ +// license:BSD-3-Clause +// copyright-holders:Curt Coder +/********************************************************************** + + RCA VIP Expansion Board VP-575 emulation + +**********************************************************************/ + +#include "vp575.h" + + + +//************************************************************************** +// DEVICE DEFINITIONS +//************************************************************************** + +const device_type VP575 = &device_creator<vp575_device>; + + +//------------------------------------------------- +// VIP_EXPANSION_INTERFACE( expansion_intf ) +//------------------------------------------------- + +void vp575_device::update_interrupts() +{ + int interrupt = CLEAR_LINE; + int dma_out = CLEAR_LINE; + int dma_in = CLEAR_LINE; + + for (int i = 0; i < MAX_SLOTS; i++) + { + interrupt |= m_int[i]; + dma_out |= m_dma_out[i]; + dma_in |= m_dma_in[i]; + } + + m_slot->interrupt_w(interrupt); + m_slot->dma_out_w(dma_out); + m_slot->dma_in_w(dma_in); +} + + +//------------------------------------------------- +// MACHINE_CONFIG_FRAGMENT( vp575 ) +//------------------------------------------------- + +static MACHINE_CONFIG_FRAGMENT( vp575 ) + MCFG_VIP_EXPANSION_SLOT_ADD("exp1", XTAL_3_52128MHz/2, vip_expansion_cards, NULL) + MCFG_VIP_EXPANSION_SLOT_INT_CALLBACK(WRITELINE(vp575_device, exp1_int_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_OUT_CALLBACK(WRITELINE(vp575_device, exp1_dma_out_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_IN_CALLBACK(WRITELINE(vp575_device, exp1_dma_in_w)) + + MCFG_VIP_EXPANSION_SLOT_ADD("exp2", XTAL_3_52128MHz/2, vip_expansion_cards, NULL) + MCFG_VIP_EXPANSION_SLOT_INT_CALLBACK(WRITELINE(vp575_device, exp2_int_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_OUT_CALLBACK(WRITELINE(vp575_device, exp2_dma_out_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_IN_CALLBACK(WRITELINE(vp575_device, exp2_dma_in_w)) + + MCFG_VIP_EXPANSION_SLOT_ADD("exp3", XTAL_3_52128MHz/2, vip_expansion_cards, NULL) + MCFG_VIP_EXPANSION_SLOT_INT_CALLBACK(WRITELINE(vp575_device, exp3_int_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_OUT_CALLBACK(WRITELINE(vp575_device, exp3_dma_out_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_IN_CALLBACK(WRITELINE(vp575_device, exp3_dma_in_w)) + + MCFG_VIP_EXPANSION_SLOT_ADD("exp4", XTAL_3_52128MHz/2, vip_expansion_cards, NULL) + MCFG_VIP_EXPANSION_SLOT_INT_CALLBACK(WRITELINE(vp575_device, exp4_int_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_OUT_CALLBACK(WRITELINE(vp575_device, exp4_dma_out_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_IN_CALLBACK(WRITELINE(vp575_device, exp4_dma_in_w)) + + MCFG_VIP_EXPANSION_SLOT_ADD("exp5", XTAL_3_52128MHz/2, vip_expansion_cards, NULL) + MCFG_VIP_EXPANSION_SLOT_INT_CALLBACK(WRITELINE(vp575_device, exp5_int_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_OUT_CALLBACK(WRITELINE(vp575_device, exp5_dma_out_w)) + MCFG_VIP_EXPANSION_SLOT_DMA_IN_CALLBACK(WRITELINE(vp575_device, exp5_dma_in_w)) +MACHINE_CONFIG_END + + +//------------------------------------------------- +// machine_config_additions - device-specific +// machine configurations +//------------------------------------------------- + +machine_config_constructor vp575_device::device_mconfig_additions() const +{ + return MACHINE_CONFIG_NAME( vp575 ); +} + + + +//************************************************************************** +// LIVE DEVICE +//************************************************************************** + +//------------------------------------------------- +// vp575_device - constructor +//------------------------------------------------- + +vp575_device::vp575_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock) : + device_t(mconfig, VP575, "VP575", tag, owner, clock, "vp575", __FILE__), + device_vip_expansion_card_interface(mconfig, *this) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_int[i] = CLEAR_LINE; + m_dma_out[i] = CLEAR_LINE; + m_dma_in[i] = CLEAR_LINE; + } +} + + +//------------------------------------------------- +// device_start - device-specific startup +//------------------------------------------------- + +void vp575_device::device_start() +{ + // find devices + m_expansion_slot[0] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp1")); + m_expansion_slot[1] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp2")); + m_expansion_slot[2] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp3")); + m_expansion_slot[3] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp4")); + m_expansion_slot[4] = dynamic_cast<vip_expansion_slot_device *>(subdevice("exp5")); +} + + +//------------------------------------------------- +// vip_program_r - program read +//------------------------------------------------- + +UINT8 vp575_device::vip_program_r(address_space &space, offs_t offset, int cs, int cdef, int *minh) +{ + UINT8 data = 0xff; + + for (int i = 0; i < MAX_SLOTS; i++) + { + data &= m_expansion_slot[i]->program_r(space, offset, cs, cdef, minh); + } + + return data; +} + + +//------------------------------------------------- +// vip_program_w - program write +//------------------------------------------------- + +void vp575_device::vip_program_w(address_space &space, offs_t offset, UINT8 data, int cdef, int *minh) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->program_w(space, offset, data, cdef, minh); + } +} + + +//------------------------------------------------- +// vip_io_r - I/O read +//------------------------------------------------- + +UINT8 vp575_device::vip_io_r(address_space &space, offs_t offset) +{ + UINT8 data = 0xff; + + for (int i = 0; i < MAX_SLOTS; i++) + { + data &= m_expansion_slot[i]->io_r(space, offset); + } + + return data; +} + + +//------------------------------------------------- +// vip_io_w - I/O write +//------------------------------------------------- + +void vp575_device::vip_io_w(address_space &space, offs_t offset, UINT8 data) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->io_w(space, offset, data); + } +} + + +//------------------------------------------------- +// vip_dma_r - DMA read +//------------------------------------------------- + +UINT8 vp575_device::vip_dma_r(address_space &space, offs_t offset) +{ + UINT8 data = 0xff; + + for (int i = 0; i < MAX_SLOTS; i++) + { + data &= m_expansion_slot[i]->dma_r(space, offset); + } + + return data; +} + + +//------------------------------------------------- +// vip_dma_w - DMA write +//------------------------------------------------- + +void vp575_device::vip_dma_w(address_space &space, offs_t offset, UINT8 data) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->dma_w(space, offset, data); + } +} + + +//------------------------------------------------- +// vip_screen_update - screen update +//------------------------------------------------- + +UINT32 vp575_device::vip_screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) +{ + UINT32 data = 0; + + for (int i = 0; i < MAX_SLOTS; i++) + { + data |= m_expansion_slot[i]->screen_update(screen, bitmap, cliprect); + } + + return data; +} + + +//------------------------------------------------- +// vip_ef1_r - EF1 flag read +//------------------------------------------------- + +int vp575_device::vip_ef1_r() +{ + int state = CLEAR_LINE; + + for (int i = 0; i < MAX_SLOTS; i++) + { + state |= m_expansion_slot[i]->ef1_r(); + } + + return state; +} + + +//------------------------------------------------- +// vip_ef3_r - EF3 flag read +//------------------------------------------------- + +int vp575_device::vip_ef3_r() +{ + int state = CLEAR_LINE; + + for (int i = 0; i < MAX_SLOTS; i++) + { + state |= m_expansion_slot[i]->ef3_r(); + } + + return state; +} + + +//------------------------------------------------- +// vip_ef4_r - EF4 flag read +//------------------------------------------------- + +int vp575_device::vip_ef4_r() +{ + int state = CLEAR_LINE; + + for (int i = 0; i < MAX_SLOTS; i++) + { + state |= m_expansion_slot[i]->ef4_r(); + } + + return state; +} + + +//------------------------------------------------- +// vip_sc_w - status code write +//------------------------------------------------- + +void vp575_device::vip_sc_w(int data) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->sc_w(data); + } +} + + +//------------------------------------------------- +// vip_q_w - Q write +//------------------------------------------------- + +void vp575_device::vip_q_w(int state) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->q_w(state); + } +} + + +//------------------------------------------------- +// vip_run_w - RUN write +//------------------------------------------------- + +void vp575_device::vip_run_w(int state) +{ + for (int i = 0; i < MAX_SLOTS; i++) + { + m_expansion_slot[i]->run_w(state); + } +} |