mirror of
https://github.com/holub/mame
synced 2025-05-13 01:24:20 +03:00
Imported CDP1861 VDC from MESS. (no whatsnew)
This commit is contained in:
Curt Coder
parent
f9e0125246
commit
5b8e012b82
2
.gitattributes
vendored
2
.gitattributes
vendored
@ -1202,6 +1202,8 @@ src/emu/validity.c svneol=native#text/plain
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src/emu/validity.h svneol=native#text/plain
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src/emu/video.c svneol=native#text/plain
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src/emu/video.h svneol=native#text/plain
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src/emu/video/cdp1861.c svneol=native#text/plain
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src/emu/video/cdp1861.h svneol=native#text/plain
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src/emu/video/crt9007.c svneol=native#text/plain
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src/emu/video/crt9007.h svneol=native#text/plain
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src/emu/video/crt9021.c svneol=native#text/plain
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@ -231,6 +231,7 @@ EMUMACHINEOBJS = \
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$(EMUMACHINE)/z8536.o \
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EMUVIDEOOBJS = \
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$(EMUVIDEO)/cdp1861.o \
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$(EMUVIDEO)/crt9007.o \
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$(EMUVIDEO)/crt9021.o \
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$(EMUVIDEO)/crt9212.o \
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279
src/emu/video/cdp1861.c
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279
src/emu/video/cdp1861.c
Normal file
@ -0,0 +1,279 @@
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/**********************************************************************
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RCA CDP1861 Video Display Controller emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************/
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#include "emu.h"
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#include "cdp1861.h"
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#include "machine/devhelpr.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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#define CDP1861_CYCLES_DMA_START 2*8
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#define CDP1861_CYCLES_DMA_ACTIVE 8*8
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#define CDP1861_CYCLES_DMA_WAIT 6*8
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//**************************************************************************
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// GLOBAL VARIABLES
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//**************************************************************************
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// devices
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const device_type CDP1861 = cdp1861_device_config::static_alloc_device_config;
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//**************************************************************************
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// DEVICE CONFIGURATION
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//**************************************************************************
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GENERIC_DEVICE_CONFIG_SETUP(cdp1861, "CDP1861")
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//-------------------------------------------------
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// device_config_complete - perform any
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// operations now that the configuration is
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// complete
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//-------------------------------------------------
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void cdp1861_device_config::device_config_complete()
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{
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// inherit a copy of the static data
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const cdp1861_interface *intf = reinterpret_cast<const cdp1861_interface *>(static_config());
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if (intf != NULL)
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*static_cast<cdp1861_interface *>(this) = *intf;
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// or initialize to defaults if none provided
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else
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{
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memset(&m_out_int_func, 0, sizeof(m_out_int_func));
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memset(&m_out_dmao_func, 0, sizeof(m_out_dmao_func));
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memset(&m_out_efx_func, 0, sizeof(m_out_efx_func));
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}
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}
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//**************************************************************************
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// LIVE DEVICE
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//**************************************************************************
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//-------------------------------------------------
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// cdp1861_device - constructor
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//-------------------------------------------------
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cdp1861_device::cdp1861_device(running_machine &_machine, const cdp1861_device_config &config)
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: device_t(_machine, config),
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m_config(config)
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{
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}
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//-------------------------------------------------
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// device_start - device-specific startup
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//-------------------------------------------------
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void cdp1861_device::device_start()
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{
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// resolve callbacks
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devcb_resolve_write_line(&m_out_int_func, &m_config.m_out_int_func, this);
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devcb_resolve_write_line(&m_out_dmao_func, &m_config.m_out_dmao_func, this);
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devcb_resolve_write_line(&m_out_efx_func, &m_config.m_out_efx_func, this);
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// allocate timers
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m_int_timer = timer_alloc(TIMER_INT);
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m_efx_timer = timer_alloc(TIMER_EFX);
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m_dma_timer = timer_alloc(TIMER_DMA);
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// find devices
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m_cpu = m_machine.device<cpu_device>(m_config.m_cpu_tag);
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m_screen = m_machine.device<screen_device>(m_config.m_screen_tag);
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m_bitmap = auto_bitmap_alloc(m_machine, m_screen->width(), m_screen->height(), m_screen->format());
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// register for state saving
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save_item(NAME(m_disp));
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save_item(NAME(m_dispon));
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save_item(NAME(m_dispoff));
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save_item(NAME(m_dmaout));
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}
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//-------------------------------------------------
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// device_reset - device-specific reset
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//-------------------------------------------------
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void cdp1861_device::device_reset()
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{
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m_int_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_INT_START, 0));
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m_efx_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_EFX_TOP_START, 0));
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m_dma_timer->adjust(m_cpu->cycles_to_attotime(CDP1861_CYCLES_DMA_START));
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m_disp = 0;
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m_dmaout = 0;
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devcb_call_write_line(&m_out_int_func, CLEAR_LINE);
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devcb_call_write_line(&m_out_dmao_func, CLEAR_LINE);
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devcb_call_write_line(&m_out_efx_func, CLEAR_LINE);
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}
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//-------------------------------------------------
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// device_timer - handle timer events
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//-------------------------------------------------
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void cdp1861_device::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
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{
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int scanline = m_screen->vpos();
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switch (id)
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{
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case TIMER_INT:
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if (scanline == CDP1861_SCANLINE_INT_START)
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{
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if (m_disp)
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{
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devcb_call_write_line(&m_out_int_func, ASSERT_LINE);
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}
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m_int_timer->adjust(m_screen->time_until_pos( CDP1861_SCANLINE_INT_END, 0));
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}
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else
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{
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if (m_disp)
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{
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devcb_call_write_line(&m_out_int_func, CLEAR_LINE);
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}
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m_int_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_INT_START, 0));
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}
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break;
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case TIMER_EFX:
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switch (scanline)
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{
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case CDP1861_SCANLINE_EFX_TOP_START:
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devcb_call_write_line(&m_out_efx_func, ASSERT_LINE);
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m_efx_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_EFX_TOP_END, 0));
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break;
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case CDP1861_SCANLINE_EFX_TOP_END:
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devcb_call_write_line(&m_out_efx_func, CLEAR_LINE);
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m_efx_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_EFX_BOTTOM_START, 0));
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break;
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case CDP1861_SCANLINE_EFX_BOTTOM_START:
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devcb_call_write_line(&m_out_efx_func, ASSERT_LINE);
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m_efx_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_EFX_BOTTOM_END, 0));
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break;
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case CDP1861_SCANLINE_EFX_BOTTOM_END:
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devcb_call_write_line(&m_out_efx_func, CLEAR_LINE);
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m_efx_timer->adjust(m_screen->time_until_pos(CDP1861_SCANLINE_EFX_TOP_START, 0));
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break;
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}
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break;
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case TIMER_DMA:
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if (m_dmaout)
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{
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if (m_disp)
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{
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if (scanline >= CDP1861_SCANLINE_DISPLAY_START && scanline < CDP1861_SCANLINE_DISPLAY_END)
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{
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devcb_call_write_line(&m_out_dmao_func, CLEAR_LINE);
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}
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}
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m_dma_timer->adjust(m_cpu->cycles_to_attotime(CDP1861_CYCLES_DMA_WAIT));
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m_dmaout = 0;
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}
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else
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{
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if (m_disp)
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{
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if (scanline >= CDP1861_SCANLINE_DISPLAY_START && scanline < CDP1861_SCANLINE_DISPLAY_END)
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{
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devcb_call_write_line(&m_out_dmao_func, ASSERT_LINE);
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}
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}
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m_dma_timer->adjust(m_cpu->cycles_to_attotime(CDP1861_CYCLES_DMA_ACTIVE));
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m_dmaout = 1;
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}
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break;
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}
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}
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//-------------------------------------------------
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// dma_w -
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//-------------------------------------------------
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WRITE8_MEMBER( cdp1861_device::dma_w )
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{
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int sx = m_screen->hpos() + 4;
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int y = m_screen->vpos();
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int x;
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for (x = 0; x < 8; x++)
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{
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int color = BIT(data, 7);
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*BITMAP_ADDR16(m_bitmap, y, sx + x) = color;
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data <<= 1;
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}
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}
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//-------------------------------------------------
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// disp_on_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( cdp1861_device::disp_on_w )
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{
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if (!m_dispon && state) m_disp = 1;
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m_dispon = state;
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}
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//-------------------------------------------------
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// disp_off_w -
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//-------------------------------------------------
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WRITE_LINE_MEMBER( cdp1861_device::disp_off_w )
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{
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if (!m_dispon && !m_dispoff && state) m_disp = 0;
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m_dispoff = state;
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devcb_call_write_line(&m_out_int_func, CLEAR_LINE);
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devcb_call_write_line(&m_out_dmao_func, CLEAR_LINE);
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}
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//-------------------------------------------------
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// update_screen -
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//-------------------------------------------------
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void cdp1861_device::update_screen(bitmap_t *bitmap, const rectangle *cliprect)
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{
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if (m_disp)
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{
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copybitmap(bitmap, m_bitmap, 0, 0, 0, 0, cliprect);
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}
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else
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{
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bitmap_fill(bitmap, cliprect, get_black_pen(m_machine));
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}
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}
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180
src/emu/video/cdp1861.h
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180
src/emu/video/cdp1861.h
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@ -0,0 +1,180 @@
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/**********************************************************************
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RCA CDP1861 Video Display Controller emulation
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Copyright MESS Team.
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Visit http://mamedev.org for licensing and usage restrictions.
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**********************************************************************
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_____ _____
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_CLK 1 |* \_/ | 24 Vdd
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_DMAO 2 | | 23 _CLEAR
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_INT 3 | | 22 SC1
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TPA 4 | | 21 SC0
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TPB 5 | | 20 DI7
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_COMP SYNC 6 | CDP1861 | 19 DI6
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VIDEO 7 | | 18 DI5
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_RESET 8 | | 17 DI4
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_EFX 9 | | 16 DI3
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DISP ON 10 | | 15 DI2
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DISP OFF 11 | | 14 DI1
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Vss 12 |_____________| 13 DI0
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**********************************************************************/
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#pragma once
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#ifndef __CDP1861__
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#define __CDP1861__
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#include "emu.h"
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//**************************************************************************
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// MACROS / CONSTANTS
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//**************************************************************************
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#define CDP1861_VISIBLE_COLUMNS 64
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#define CDP1861_VISIBLE_LINES 128
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#define CDP1861_HBLANK_START 14 * 8
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#define CDP1861_HBLANK_END 12
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#define CDP1861_HSYNC_START 0
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#define CDP1861_HSYNC_END 12
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#define CDP1861_SCREEN_WIDTH 14 * 8
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#define CDP1861_TOTAL_SCANLINES 262
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#define CDP1861_SCANLINE_DISPLAY_START 80
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#define CDP1861_SCANLINE_DISPLAY_END 208
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#define CDP1861_SCANLINE_VBLANK_START 262
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#define CDP1861_SCANLINE_VBLANK_END 16
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#define CDP1861_SCANLINE_VSYNC_START 16
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#define CDP1861_SCANLINE_VSYNC_END 0
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#define CDP1861_SCANLINE_INT_START CDP1861_SCANLINE_DISPLAY_START - 2
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#define CDP1861_SCANLINE_INT_END CDP1861_SCANLINE_DISPLAY_START
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#define CDP1861_SCANLINE_EFX_TOP_START CDP1861_SCANLINE_DISPLAY_START - 4
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#define CDP1861_SCANLINE_EFX_TOP_END CDP1861_SCANLINE_DISPLAY_START
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#define CDP1861_SCANLINE_EFX_BOTTOM_START CDP1861_SCANLINE_DISPLAY_END - 4
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#define CDP1861_SCANLINE_EFX_BOTTOM_END CDP1861_SCANLINE_DISPLAY_END
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//**************************************************************************
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// INTERFACE CONFIGURATION MACROS
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//**************************************************************************
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#define MCFG_CDP1861_ADD(_tag, _clock, _config) \
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MCFG_DEVICE_ADD(_tag, CDP1861, _clock) \
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MCFG_DEVICE_CONFIG(_config)
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#define MCFG_CDP1861_SCREEN_ADD(_tag, _clock) \
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MCFG_SCREEN_ADD(_tag, RASTER) \
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MCFG_SCREEN_FORMAT(BITMAP_FORMAT_INDEXED16) \
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MCFG_SCREEN_RAW_PARAMS(_clock, CDP1861_SCREEN_WIDTH, CDP1861_HBLANK_END, CDP1861_HBLANK_START, CDP1861_TOTAL_SCANLINES, CDP1861_SCANLINE_VBLANK_END, CDP1861_SCANLINE_VBLANK_START)
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#define CDP1861_INTERFACE(name) \
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const cdp1861_interface (name) =
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//**************************************************************************
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// TYPE DEFINITIONS
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//**************************************************************************
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// ======================> cdp1861_interface
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struct cdp1861_interface
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{
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const char *m_cpu_tag;
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const char *m_screen_tag;
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devcb_write_line m_out_int_func;
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devcb_write_line m_out_dmao_func;
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devcb_write_line m_out_efx_func;
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};
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// ======================> cdp1861_device_config
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class cdp1861_device_config : public device_config,
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public cdp1861_interface
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{
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friend class cdp1861_device;
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// construction/destruction
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cdp1861_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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public:
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// allocators
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static device_config *static_alloc_device_config(const machine_config &mconfig, const char *tag, const device_config *owner, UINT32 clock);
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virtual device_t *alloc_device(running_machine &machine) const;
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protected:
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// device_config overrides
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virtual void device_config_complete();
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};
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// ======================> cdp1861_device
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class cdp1861_device : public device_t
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{
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friend class cdp1861_device_config;
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// construction/destruction
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cdp1861_device(running_machine &_machine, const cdp1861_device_config &_config);
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public:
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DECLARE_WRITE8_MEMBER( dma_w );
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DECLARE_WRITE_LINE_MEMBER( disp_on_w );
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DECLARE_WRITE_LINE_MEMBER( disp_off_w );
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void update_screen(bitmap_t *bitmap, const rectangle *cliprect);
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protected:
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// device-level overrides
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virtual void device_start();
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virtual void device_reset();
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virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
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private:
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static const device_timer_id TIMER_INT = 0;
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static const device_timer_id TIMER_EFX = 1;
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static const device_timer_id TIMER_DMA = 2;
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devcb_resolved_write_line m_out_int_func;
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devcb_resolved_write_line m_out_dmao_func;
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devcb_resolved_write_line m_out_efx_func;
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screen_device *m_screen; // screen
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bitmap_t *m_bitmap; // bitmap
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int m_disp; // display enabled
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int m_dispon; // display on latch
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int m_dispoff; // display off latch
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int m_dmaout; // DMA request active
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// timers
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emu_timer *m_int_timer; // interrupt timer
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emu_timer *m_efx_timer; // EFx timer
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emu_timer *m_dma_timer; // DMA timer
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||||
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cpu_device *m_cpu;
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||||
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const cdp1861_device_config &m_config;
|
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};
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||||
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||||
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// device type definition
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extern const device_type CDP1861;
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#endif
|
||||
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Block a user