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tv990: video modes and nvram (nw)

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This commit is contained in:
cracyc 2016-07-25 10:26:14 -05:00
parent 5c1803d494
commit b2f5bd8bbc
1 changed files with 26 additions and 11 deletions
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37
src/mame/drivers/tv990.cpp
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@ -39,6 +39,7 @@
#include "machine/ins8250.h"
#include "machine/8042kbdc.h"
#include "bus/rs232/rs232.h"
#include "machine/nvram.h"
#define UART0_TAG "ns16450_0"
#define UART1_TAG "ns16450_1"
@ -85,11 +86,12 @@ public:
private:
UINT16 tvi1111_regs[(0x100/2)+2];
emu_timer *m_rowtimer;
int m_rowh, m_width, m_height;
};
INTERRUPT_GEN_MEMBER(tv990_state::vblank)
{
m_rowtimer->adjust(m_screen->time_until_pos(16));
m_rowtimer->adjust(m_screen->time_until_pos(m_rowh));
m_maincpu->set_input_line(M68K_IRQ_6, ASSERT_LINE);
tvi1111_regs[0x1d] |= 4;
}
@ -101,7 +103,7 @@ void tv990_state::machine_start()
void tv990_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
m_rowtimer->adjust(m_screen->time_until_pos(m_screen->vpos() + 16));
m_rowtimer->adjust(m_screen->time_until_pos(m_screen->vpos() + m_rowh));
m_maincpu->set_input_line(M68K_IRQ_6, ASSERT_LINE);
m_screen->update_now();
}
@ -150,6 +152,15 @@ WRITE16_MEMBER(tv990_state::tvi1111_w)
}
#endif
COMBINE_DATA(&tvi1111_regs[offset]);
if((offset == 0x1c) || (offset == 0x10) || (offset == 0x9) || (offset == 0xa))
{
m_width = BIT(tvi1111_regs[0x1c], 11) ? 132 : 80;
m_rowh = (tvi1111_regs[0x10] & 0xff) + 1;
if(!m_rowh)
m_rowh = 16;
m_height = (tvi1111_regs[0xa] - tvi1111_regs[0x9]) / m_rowh;
m_screen->set_visible_area(0, m_width * 16 - 1, 0, m_height * m_rowh - 1);
}
}
UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
@ -163,13 +174,12 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
UINT8 *fontram = (UINT8 *)m_fontram.target();
UINT16 *curchar;
UINT8 *fontptr;
int miny = cliprect.min_y / 16;
int maxy = cliprect.max_y / 16;
int miny = cliprect.min_y / m_rowh;
int maxy = cliprect.max_y / m_rowh;
bitmap.fill(0, cliprect);
for (y = miny; y <= maxy; y++)
{
// this isn't exactly right.
int i;
for(i = 7; i >= 0; i--)
{
@ -185,21 +195,21 @@ UINT32 tv990_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, c
int minx = tvi1111_regs[i + 0x30] >> 8;
int maxx = tvi1111_regs[i + 0x30] & 0xff;
if(maxx > 80)
maxx = 80;
if(maxx > m_width)
maxx = m_width;
for (x = minx; x < maxx; x++)
{
UINT8 chr = curchar[x - minx] >> 8;
UINT8 attr = curchar[x - minx] & 0xff;
fontptr = (UINT8 *)&fontram[(chr + (attr & 0x40 ? 256 : 0)) * 64];
for (int chary = 0; chary < 16; chary++)
for (int chary = 0; chary < m_rowh; chary++)
{
scanline = &bitmap.pix32((y*16)+chary, (x*16));
scanline = &bitmap.pix32((y*m_rowh)+chary, (x*16));
pixels = *fontptr++;
pixels2 = *fontptr++;
if((attr & 0x8) && (chary == 15))
if((attr & 0x8) && (chary == m_rowh - 1))
{
pixels = 0xff;
pixels2 = 0xff;
@ -275,7 +285,7 @@ static ADDRESS_MAP_START(tv990_mem, AS_PROGRAM, 16, tv990_state)
AM_RANGE(0x0a0000, 0x0a000f) AM_DEVREADWRITE8(UART0_TAG, ns16450_device, ins8250_r, ins8250_w, 0x00ff)
AM_RANGE(0x0a0010, 0x0a001f) AM_DEVREADWRITE8(UART1_TAG, ns16450_device, ins8250_r, ins8250_w, 0x00ff)
AM_RANGE(0x0b0000, 0x0b0003) AM_READWRITE8(kbdc_r, kbdc_w, 0x00ff)
AM_RANGE(0x0c0000, 0x0c7fff) AM_RAM // work RAM
AM_RANGE(0x0c0000, 0x0c7fff) AM_RAM AM_SHARE("nvram")// work RAM
ADDRESS_MAP_END
/* Input ports */
@ -288,6 +298,9 @@ void tv990_state::machine_reset()
m_rowtimer->adjust(m_screen->time_until_pos(0));
memset(tvi1111_regs, 0, sizeof(tvi1111_regs));
m_rowh = 16;
m_width = 80;
m_height = 50;
}
static MACHINE_CONFIG_START( tv990, tv990_state )
@ -323,6 +336,8 @@ static MACHINE_CONFIG_START( tv990, tv990_state )
MCFG_DEVICE_ADD("pc_kbdc", KBDC8042, 0)
MCFG_KBDC8042_KEYBOARD_TYPE(KBDC8042_AT386)
MCFG_KBDC8042_INPUT_BUFFER_FULL_CB(INPUTLINE("maincpu", M68K_IRQ_2))
MCFG_NVRAM_ADD_0FILL("nvram")
MACHINE_CONFIG_END
/* ROM definition */