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wicat: added a timer to the terminal board, and fixed a silly error in the IO space definition.

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This commit is contained in:
mahlemiut 2013-12-14 21:44:52 +00:00
parent aaac7a5ab8
commit 5b93c89f9e
1 changed files with 51 additions and 3 deletions
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54
src/mess/drivers/wicat.c
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@ -62,6 +62,8 @@ public:
DECLARE_WRITE8_MEMBER(video_uart1_w);
DECLARE_READ8_MEMBER(videosram_r);
DECLARE_WRITE8_MEMBER(videosram_w);
DECLARE_READ8_MEMBER(video_timer_r);
DECLARE_WRITE8_MEMBER(video_timer_w);
required_shared_ptr<UINT8> m_vram;
required_device<cpu_device> m_maincpu;
@ -82,12 +84,20 @@ public:
required_device<x2212_device> m_videosram;
UINT32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect) { return 0; }
virtual void device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr);
private:
virtual void machine_start();
virtual void machine_reset();
virtual void driver_start();
emu_timer* m_video_timer;
static const device_timer_id VIDEO_TIMER = 0;
UINT8 m_portA;
UINT8 m_portB;
bool m_video_timer_irq;
};
@ -118,10 +128,11 @@ static ADDRESS_MAP_START(wicat_video_mem, AS_PROGRAM, 16, wicat_state)
AM_RANGE(0x8000, 0xffff) AM_RAM
ADDRESS_MAP_END
static ADDRESS_MAP_START(wicat_video_io, AS_PROGRAM, 8, wicat_state)
static ADDRESS_MAP_START(wicat_video_io, AS_IO, 8, wicat_state)
// these are largely wild guesses...
AM_RANGE(0x0100,0x0107) AM_READWRITE(video_uart0_r,video_uart0_w)
AM_RANGE(0x0200,0x0207) AM_READWRITE(video_uart1_r,video_uart1_w)
AM_RANGE(0x0000,0x0003) AM_READWRITE(video_timer_r,video_timer_w) // some sort of timer?
AM_RANGE(0x0100,0x0107) AM_READWRITE(video_uart0_r,video_uart0_w) // INS2651 UART #1
AM_RANGE(0x0200,0x0207) AM_READWRITE(video_uart1_r,video_uart1_w) // INS2651 UART #2
AM_RANGE(0x0400,0x047f) AM_READWRITE(videosram_r,videosram_w) // XD2210 4-bit NOVRAM
AM_RANGE(0x0700,0x0700) AM_DEVREADWRITE("videouart",im6402_device,read,write) // UART?
AM_RANGE(0x0800,0x080f) AM_DEVREADWRITE("videodma",am9517a_device,read,write) // DMA?
@ -136,6 +147,10 @@ ADDRESS_MAP_END
static INPUT_PORTS_START( wicat )
INPUT_PORTS_END
void wicat_state::driver_start()
{
m_video_timer = timer_alloc(VIDEO_TIMER);
}
void wicat_state::machine_start()
{
@ -147,8 +162,20 @@ void wicat_state::machine_reset()
m_videouart0->dcd_w(0);
m_videouart1->dcd_w(0);
m_uart0->dcd_w(0);
m_video_timer_irq = false;
m_video_timer->adjust(attotime::zero,0,attotime::from_hz(60));
}
void wicat_state::device_timer(emu_timer &timer, device_timer_id id, int param, void *ptr)
{
switch (id)
{
case VIDEO_TIMER:
m_video_timer_irq = true;
m_videocpu->set_input_line(INPUT_LINE_IRQ0,ASSERT_LINE);
break;
}
}
WRITE16_MEMBER( wicat_state::parallel_led_w )
{
// bit 0 - parallel port A direction (0 = input)
@ -278,6 +305,27 @@ WRITE8_MEMBER(wicat_state::videosram_w)
m_videosram->write(space,offset/2,data);
}
READ8_MEMBER(wicat_state::video_timer_r)
{
UINT8 ret = 0x00;
if(offset == 0x00)
{
if(m_video_timer_irq)
{
ret |= 0x08;
m_video_timer_irq = false;
m_videocpu->set_input_line(INPUT_LINE_IRQ0,CLEAR_LINE);
}
}
return ret;
}
WRITE8_MEMBER(wicat_state::video_timer_w)
{
logerror("I/O port 0x%04x write %02x\n",offset,data);
}
I8275_DISPLAY_PIXELS(wicat_display_pixels)
{
//wicat_state *state = device->machine().driver_data<wicat_state>();