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(MESS) vtvideo: devcb2. (nw)

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This commit is contained in:
Curt Coder 2014-03-19 12:30:42 +00:00
parent b3c35fa4bc
commit 0bb67d587f
4 changed files with 33 additions and 26 deletions
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8
src/mess/drivers/rainbow.c
View File

@ -221,7 +221,7 @@ public:
}
DECLARE_READ8_MEMBER(read_video_ram_r);
DECLARE_WRITE8_MEMBER(clear_video_interrupt);
DECLARE_WRITE_LINE_MEMBER(clear_video_interrupt);
DECLARE_READ8_MEMBER(diagnostic_r);
DECLARE_WRITE8_MEMBER(diagnostic_w);
@ -1010,7 +1010,7 @@ INTERRUPT_GEN_MEMBER(rainbow_state::vblank_irq)
raise_8088_irq(IRQ_8088_VBL);
}
WRITE8_MEMBER( rainbow_state::clear_video_interrupt )
WRITE_LINE_MEMBER( rainbow_state::clear_video_interrupt )
{
lower_8088_irq(IRQ_8088_VBL);
}
@ -1146,8 +1146,6 @@ WRITE_LINE_MEMBER(rainbow_state::irq_hi_w)
static const vt_video_interface video_interface =
{
"chargen",
DEVCB_DRIVER_MEMBER(rainbow_state, read_video_ram_r),
DEVCB_DRIVER_MEMBER(rainbow_state, clear_video_interrupt)
};
/* F4 Character Displayer */
@ -1214,6 +1212,8 @@ static MACHINE_CONFIG_START( rainbow, rainbow_state )
MCFG_GFXDECODE_ADD("gfxdecode", "vt100_video:palette", rainbow)
MCFG_RAINBOW_VIDEO_ADD("vt100_video", "screen", video_interface)
MCFG_VT_VIDEO_RAM_CALLBACK(READ8(rainbow_state, read_video_ram_r))
MCFG_VT_VIDEO_CLEAR_VIDEO_INTERRUPT_CALLBACK(WRITELINE(rainbow_state, clear_video_interrupt))
MCFG_FD1793_ADD("wd1793", rainbow_wd17xx_interface )
MCFG_LEGACY_FLOPPY_4_DRIVES_ADD(floppy_intf)

8
src/mess/drivers/vt100.c
View File

@ -54,7 +54,7 @@ public:
DECLARE_WRITE8_MEMBER(vt100_baud_rate_w);
DECLARE_WRITE8_MEMBER(vt100_nvr_latch_w);
DECLARE_READ8_MEMBER(vt100_read_video_ram_r);
DECLARE_WRITE8_MEMBER(vt100_clear_video_interrupt);
DECLARE_WRITE_LINE_MEMBER(vt100_clear_video_interrupt);
required_shared_ptr<UINT8> m_p_ram;
bool m_keyboard_int;
bool m_receiver_int;
@ -369,7 +369,7 @@ READ8_MEMBER( vt100_state::vt100_read_video_ram_r )
return m_p_ram[offset];
}
WRITE8_MEMBER( vt100_state::vt100_clear_video_interrupt )
WRITE_LINE_MEMBER( vt100_state::vt100_clear_video_interrupt )
{
m_vertical_int = 0;
}
@ -377,8 +377,6 @@ WRITE8_MEMBER( vt100_state::vt100_clear_video_interrupt )
static const vt_video_interface vt100_video_interface =
{
"chargen",
DEVCB_DRIVER_MEMBER(vt100_state, vt100_read_video_ram_r),
DEVCB_DRIVER_MEMBER(vt100_state, vt100_clear_video_interrupt)
};
INTERRUPT_GEN_MEMBER(vt100_state::vt100_vertical_interrupt)
@ -428,6 +426,8 @@ static MACHINE_CONFIG_START( vt100, vt100_state )
MCFG_DEFAULT_LAYOUT( layout_vt100 )
MCFG_VT100_VIDEO_ADD("vt100_video", "screen", vt100_video_interface)
MCFG_VT_VIDEO_RAM_CALLBACK(READ8(vt100_state, vt100_read_video_ram_r))
MCFG_VT_VIDEO_CLEAR_VIDEO_INTERRUPT_CALLBACK(WRITELINE(vt100_state, vt100_clear_video_interrupt))
MCFG_DEVICE_ADD("i8251", I8251, 0)
MCFG_I8251_TXD_HANDLER(DEVWRITELINE(RS232_TAG, rs232_port_device, write_txd))

26
src/mess/video/vtvideo.c
View File

@ -47,6 +47,8 @@ const device_type RAINBOW_VIDEO = &device_creator<rainbow_video_device>;
vt100_video_device::vt100_video_device(const machine_config &mconfig, device_type type, const char *name, const char *tag, device_t *owner, UINT32 clock, const char *shortname, const char *source)
: device_t(mconfig, type, name, tag, owner, clock, shortname, source),
device_video_interface(mconfig, *this),
m_read_ram(*this),
m_write_clear_video_interrupt(*this),
m_palette(*this, "palette")
{
}
@ -55,6 +57,8 @@ vt100_video_device::vt100_video_device(const machine_config &mconfig, device_typ
vt100_video_device::vt100_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: device_t(mconfig, VT100_VIDEO, "VT100 Video", tag, owner, clock, "vt100_video", __FILE__),
device_video_interface(mconfig, *this),
m_read_ram(*this),
m_write_clear_video_interrupt(*this),
m_palette(*this, "palette")
{
}
@ -82,8 +86,6 @@ void vt100_video_device::device_config_complete()
// or initialize to defaults if none provided
else
{
memset(&m_in_ram_cb, 0, sizeof(m_in_ram_cb));
memset(&m_clear_video_cb, 0, sizeof(m_clear_video_cb));
m_char_rom_tag = "";
}
}
@ -95,8 +97,8 @@ void vt100_video_device::device_config_complete()
void vt100_video_device::device_start()
{
/* resolve callbacks */
m_in_ram_func.resolve(m_in_ram_cb, *this);
m_clear_video_interrupt.resolve(m_clear_video_cb, *this);
m_read_ram.resolve_safe(0);
m_write_clear_video_interrupt.resolve_safe();
m_gfx = machine().root_device().memregion(m_char_rom_tag)->base();
assert(m_gfx != NULL);
@ -264,7 +266,7 @@ WRITE8_MEMBER( vt100_video_device::dc012_w )
break;
case 0x09:
// clear vertical frequency interrupt;
m_clear_video_interrupt(0, 0);
m_write_clear_video_interrupt(0);
break;
case 0x0a:
@ -438,12 +440,12 @@ void vt100_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &cli
UINT8 display_type = 3; // binary 11
UINT16 temp = 0;
if (m_in_ram_func(0) != 0x7f)
if (m_read_ram(0) != 0x7f)
return;
while (line < (m_height + m_skip_lines))
{
code = m_in_ram_func(addr + xpos);
code = m_read_ram(addr + xpos);
if (code == 0x7f)
{
// end of line, fill empty till end of line
@ -455,7 +457,7 @@ void vt100_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &cli
}
}
// move to new data
temp = m_in_ram_func(addr + xpos + 1) * 256 + m_in_ram_func(addr + xpos + 2);
temp = m_read_ram(addr + xpos + 1) * 256 + m_read_ram(addr + xpos + 2);
addr = (temp) & 0x1fff;
// if A12 is 1 then it is 0x2000 block, if 0 then 0x4000 (AVO)
if (addr & 0x1000) addr &= 0xfff; else addr |= 0x2000;
@ -708,7 +710,7 @@ void rainbow_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &c
while (line < (m_height + m_skip_lines))
{
code = m_in_ram_func(addr + xpos);
code = m_read_ram(addr + xpos);
if ( code == 0x00 ) // TODO: investigate side effect on regular zero character!
display_type |= 0x80; // DEFAULT: filler chars (till end of line) and empty lines (00) will be blanked
@ -732,10 +734,10 @@ void rainbow_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &c
attr_addr = 0x1000 | ( (addr + xpos + 1) & 0x0fff );
// MOVE TO NEW DATA
temp = m_in_ram_func(addr + xpos + 2) * 256 + m_in_ram_func(addr + xpos + 1);
temp = m_read_ram(addr + xpos + 2) * 256 + m_read_ram(addr + xpos + 1);
addr = (temp) & 0x0fff;
temp = m_in_ram_func(attr_addr);
temp = m_read_ram(attr_addr);
scroll_region = (temp) & 1;
display_type = (temp >> 1) & 3;
@ -752,7 +754,7 @@ void rainbow_video_device::video_update(bitmap_ind16 &bitmap, const rectangle &c
if (line >= m_skip_lines)
{
attr_addr = 0x1000 | ( (addr + xpos) & 0x0fff );
temp = m_in_ram_func(attr_addr); // get character attribute
temp = m_read_ram(attr_addr); // get character attribute
// CONFIRMED: Reverse active on 1. No attributes = 0x0E
// 1 = display char. in REVERSE (encoded as 8)

17
src/mess/video/vtvideo.h
View File

@ -15,13 +15,15 @@
#include "emu.h"
#define MCFG_VT_VIDEO_RAM_CALLBACK(_read) \
devcb = &vt100_video_device::set_ram_rd_callback(*device, DEVCB2_##_read);
#define MCFG_VT_VIDEO_CLEAR_VIDEO_INTERRUPT_CALLBACK(_write) \
devcb = &vt100_video_device::set_clear_video_irq_wr_callback(*device, DEVCB2_##_write);
struct vt_video_interface
{
const char *m_char_rom_tag; /* character rom region */
/* this gets called for every memory read */
devcb_read8 m_in_ram_cb;
devcb_write8 m_clear_video_cb;
};
@ -34,6 +36,9 @@ public:
vt100_video_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock);
~vt100_video_device() {}
template<class _Object> static devcb2_base &set_ram_rd_callback(device_t &device, _Object object) { return downcast<vt100_video_device &>(device).m_read_ram.set_callback(object); }
template<class _Object> static devcb2_base &set_clear_video_irq_wr_callback(device_t &device, _Object object) { return downcast<vt100_video_device &>(device).m_write_clear_video_interrupt.set_callback(object); }
DECLARE_READ8_MEMBER(lba7_r);
DECLARE_WRITE8_MEMBER(dc012_w);
DECLARE_WRITE8_MEMBER(dc011_w);
@ -52,8 +57,8 @@ protected:
virtual void display_char(bitmap_ind16 &bitmap, UINT8 code, int x, int y, UINT8 scroll_region, UINT8 display_type);
TIMER_CALLBACK_MEMBER(lba7_change);
devcb_resolved_read8 m_in_ram_func;
devcb_resolved_write8 m_clear_video_interrupt;
devcb2_read8 m_read_ram;
devcb2_write8 m_write_clear_video_interrupt;
UINT8 *m_gfx; /* content of char rom */