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v100: Add screen and VTAC (nw)

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This commit is contained in:
AJR 2018-01-04 12:11:31 -05:00
parent 30fa950064
commit 48bb6f04a4
1 changed files with 25 additions and 5 deletions
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30
src/mame/drivers/v100.cpp
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@ -1,5 +1,5 @@
// license:BSD-3-Clause
// copyright-holders:
// copyright-holders:AJR
/***********************************************************************************************************************************
Skeleton driver for Visual 100 display terminal.
@ -13,8 +13,11 @@ Skeleton driver for Visual 100 display terminal.
#include "machine/i8214.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
//#include "video/tms9927.h"
//#include "screen.h"
#include "video/tms9927.h"
#include "screen.h"
// character matrix is supposed to be only 7x7, but 15 produces correct timings
#define CHAR_WIDTH 15
class v100_state : public driver_device
{
@ -22,6 +25,7 @@ public:
v100_state(const machine_config &mconfig, device_type type, const char *tag)
: driver_device(mconfig, type, tag)
, m_maincpu(*this, "maincpu")
, m_screen(*this, "screen")
, m_brg(*this, "brg")
, m_earom(*this, "earom")
, m_picu(*this, "picu")
@ -34,16 +38,24 @@ public:
IRQ_CALLBACK_MEMBER(irq_ack);
DECLARE_WRITE8_MEMBER(ppi_porta_w);
u32 screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect);
private:
virtual void machine_start() override;
required_device<cpu_device> m_maincpu;
required_device<screen_device> m_screen;
required_device<com8116_device> m_brg;
required_device<er1400_device> m_earom;
required_device<i8214_device> m_picu;
required_region_ptr<u8> m_p_chargen;
};
u32 v100_state::screen_update(screen_device &screen, bitmap_rgb32 &bitmap, const rectangle &cliprect)
{
return 0;
}
void v100_state::machine_start()
{
m_picu->inte_w(1);
@ -85,7 +97,7 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, v100_state )
ADDRESS_MAP_GLOBAL_MASK(0xff)
//AM_RANGE(0x00, 0x0f) AM_DEVWRITE("vtac", crt5037_device, write)
AM_RANGE(0x00, 0x0f) AM_DEVREADWRITE("vtac", crt5037_device, read, write)
AM_RANGE(0x10, 0x10) AM_WRITE(brg_w)
AM_RANGE(0x12, 0x12) AM_DEVREADWRITE("usart", i8251_device, data_r, data_w)
AM_RANGE(0x13, 0x13) AM_DEVREADWRITE("usart", i8251_device, status_r, control_w)
@ -116,7 +128,15 @@ static MACHINE_CONFIG_START( v100 )
MCFG_COM8116_FR_HANDLER(DEVWRITELINE("usart", i8251_device, write_rxc))
MCFG_COM8116_FT_HANDLER(DEVWRITELINE("usart", i8251_device, write_txc))
//MCFG_DEVICE_ADD("vtac", CRT5037, XTAL_47_736MHz / 12) // divider not verified
MCFG_SCREEN_ADD("screen", RASTER)
MCFG_SCREEN_RAW_PARAMS(XTAL_47_736MHz / 2, 102 * CHAR_WIDTH, 0, 80 * CHAR_WIDTH, 260, 0, 240)
//MCFG_SCREEN_RAW_PARAMS(XTAL_47_736MHz, 170 * CHAR_WIDTH, 0, 132 * CHAR_WIDTH, 312, 0, 240)
MCFG_SCREEN_UPDATE_DRIVER(v100_state, screen_update)
// FIXME: dot clock should be divided by char width, and not divided by 2 for 132-column mode
MCFG_DEVICE_ADD("vtac", CRT5037, XTAL_47_736MHz / 2)
MCFG_TMS9927_CHAR_WIDTH(CHAR_WIDTH)
MCFG_VIDEO_SET_SCREEN("screen")
MCFG_DEVICE_ADD("picu", I8214, XTAL_47_736MHz / 12)
MCFG_I8214_INT_CALLBACK(ASSERTLINE("maincpu", 0))