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mame/src/mess/machine/teleprinter.c

238 lines
8.2 KiB
C
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#include "machine/teleprinter.h"
static const UINT8 teleprinter_font[128*8] =
{
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0x00,0x00,0x22,0x22,0x22,0x14,0x08,0x00,
0x00,0x00,0x22,0x22,0x2a,0x2a,0x14,0x00,
0x00,0x00,0x22,0x14,0x08,0x14,0x22,0x00,
0x00,0x00,0x22,0x22,0x14,0x08,0x04,0x02,
0x00,0x00,0x3e,0x10,0x08,0x04,0x3e,0x00,
0x10,0x08,0x08,0x04,0x08,0x08,0x10,0x00,
0x08,0x08,0x08,0x08,0x08,0x08,0x08,0x00,
0x04,0x08,0x08,0x10,0x08,0x08,0x04,0x00,
0x3e,0x00,0x00,0x00,0x00,0x00,0x00,0x00,
0x2a,0x15,0x2a,0x15,0x2a,0x15,0x2a,0x15
};
teleprinter_device::teleprinter_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: generic_terminal_device(mconfig, TELEPRINTER, "Teleprinter", tag, owner, clock)
{
}
void teleprinter_device::scroll_line()
{
memmove(m_buffer,m_buffer+TELEPRINTER_WIDTH,(TELEPRINTER_HEIGHT-1)*TELEPRINTER_WIDTH);
memset(m_buffer + TELEPRINTER_WIDTH*(TELEPRINTER_HEIGHT-1),0x20,TELEPRINTER_WIDTH);
}
void teleprinter_device::write_char(UINT8 data) {
m_buffer[(TELEPRINTER_HEIGHT-1)*TELEPRINTER_WIDTH+m_x_pos] = data;
m_x_pos++;
if (m_x_pos >= TELEPRINTER_WIDTH)
{
m_x_pos = 0;
scroll_line();
}
}
void teleprinter_device::clear() {
memset(m_buffer,0,TELEPRINTER_WIDTH*TELEPRINTER_HEIGHT);
m_x_pos = 0;
}
void teleprinter_device::term_write(UINT8 data)
{
switch(data) {
case 10: m_x_pos = 0;
scroll_line();
break;
case 13: m_x_pos = 0; break;
case 9: m_x_pos = (m_x_pos & 0xf8) + 8;
if (m_x_pos >= TELEPRINTER_WIDTH)
m_x_pos = TELEPRINTER_WIDTH-1;
break;
case 16: break;
default: write_char(data); break;
}
}
/***************************************************************************
VIDEO HARDWARE
***************************************************************************/
UINT32 teleprinter_device::tp_update(screen_device &device, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
UINT8 code;
int y, c, x, b;
for (y = 0; y < TELEPRINTER_HEIGHT; y++)
{
for (c = 0; c < 8; c++)
{
int horpos = 0;
for (x = 0; x < TELEPRINTER_WIDTH; x++)
{
code = teleprinter_font[(m_buffer[y*TELEPRINTER_WIDTH + x] & 0x7f) *8 + c];
for (b = 0; b < 8; b++)
{
bitmap.pix32(y*8 + c, horpos++) = (code >> b) & 0x01 ? 0 : 0x00ffffff;
}
}
}
}
return 0;
}
static ASCII_KEYBOARD_INTERFACE( keyboard_intf )
{
DEVCB_DEVICE_MEMBER(DEVICE_SELF_OWNER, generic_terminal_device, kbd_put)
};
/***************************************************************************
VIDEO HARDWARE
***************************************************************************/
MACHINE_CONFIG_FRAGMENT( generic_teleprinter )
MCFG_SCREEN_ADD(TELEPRINTER_SCREEN_TAG, RASTER)
MCFG_SCREEN_REFRESH_RATE(50)
MCFG_SCREEN_VBLANK_TIME(ATTOSECONDS_IN_USEC(2500)) /* not accurate */
MCFG_SCREEN_SIZE(TELEPRINTER_WIDTH*8, TELEPRINTER_HEIGHT*8)
MCFG_SCREEN_VISIBLE_AREA(0, TELEPRINTER_WIDTH*8-1, 0, TELEPRINTER_HEIGHT*8-1)
MCFG_SCREEN_UPDATE_DEVICE(DEVICE_SELF, teleprinter_device, tp_update)
MCFG_ASCII_KEYBOARD_ADD(KEYBOARD_TAG, keyboard_intf)
MACHINE_CONFIG_END
machine_config_constructor teleprinter_device::device_mconfig_additions() const
{
return MACHINE_CONFIG_NAME(generic_teleprinter);
}
/*-------------------------------------------------
DEVICE_RESET( teleprinter )
-------------------------------------------------*/
void teleprinter_device::device_reset()
{
clear();
generic_terminal_device::device_reset();
}
const device_type TELEPRINTER = &device_creator<teleprinter_device>;
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