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hp2645: video blanking added

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This commit is contained in:
fulivi 2018-01-09 14:06:46 +01:00 committed by Vas Crabb
parent af93ffa51a
commit f80b76c391
1 changed files with 15 additions and 6 deletions
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21
src/mame/drivers/hp2640.cpp
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@ -68,7 +68,7 @@
#include "hp2640.lh"
// Debugging
#define VERBOSE 1
#define VERBOSE 0
#include "logmacro.h"
// Bit manipulation
@ -198,6 +198,7 @@ protected:
uint8_t m_cursor_x;
uint8_t m_cursor_y;
bool m_cursor_blink_inh;
bool m_blanking;
// Async line interface
uint8_t m_async_control;
@ -235,6 +236,7 @@ void hp2645_state::machine_start()
{
machine().first_screen()->register_screen_bitmap(m_bitmap);
// TODO: save more state
save_item(NAME(m_mode_byte));
save_item(NAME(m_timer_irq));
save_item(NAME(m_datacom_irq));
@ -247,7 +249,9 @@ void hp2645_state::machine_reset()
m_datacom_irq = false;
m_timer_10ms->reset();
update_irq();
m_blanking = true;
m_dma_on = true;
m_eop = true;
m_uart->set_input_pin(AY31015_XR , 1);
m_uart->set_input_pin(AY31015_SWE , 0);
m_uart->set_input_pin(AY31015_CS , 1);
@ -379,7 +383,7 @@ TIMER_DEVICE_CALLBACK_MEMBER(hp2645_state::scanline_timer)
m_row_reset = true;
m_row_counter = 0;
m_dma_addr = START_DMA_ADDR;
m_eop = false;
m_eop = m_blanking;
m_skipeol = false;
} else {
m_even = !m_even;
@ -400,16 +404,16 @@ WRITE8_MEMBER(hp2645_state::cx_w)
WRITE8_MEMBER(hp2645_state::cy_w)
{
// TODO: video enable
m_blanking = BIT(data , 7);
m_cursor_y = data & 0x1f;
m_dma_on = !BIT(data , 6);
m_dma_on = m_blanking || !BIT(data , 6);
if (m_cursor_y == m_row_counter) {
LOG("ROW MATCH %02x\n" , data);
if (m_dma_on && BIT(data , 5)) {
if (!BIT(data , 6) && BIT(data , 5)) {
LOG("EOP on cy\n");
m_eop = true;
}
if (!m_dma_on && !BIT(data , 5) && m_en_skipeol) {
if (BIT(data , 6) && !BIT(data , 5) && m_en_skipeol) {
LOG("SKIPEOL on cy\n");
m_skipeol = true;
}
@ -603,6 +607,11 @@ void hp2645_state::video_fill_buffer(bool buff_idx , unsigned max_cycles)
void hp2645_state::video_render_buffer(unsigned video_scanline , unsigned line_in_row , bool buff_idx , bool cyen)
{
if (m_blanking) {
m_bitmap.fill(rgb_t::black() , rectangle(0 , VIDEO_VIS_COLS * VIDEO_CHAR_WIDTH * 2 , video_scanline , video_scanline));
return;
}
bool cursor_blink;
unsigned fn = (unsigned)m_screen->frame_number();
unsigned fn_12 = fn / 12;