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(nw) evmbug : fixed keyboard

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This commit is contained in:
Robbbert 2017-12-10 03:47:25 +11:00
parent e4388838f4
commit 01a9e86279
1 changed files with 40 additions and 26 deletions
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66
src/mame/drivers/evmbug.cpp
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@ -2,17 +2,23 @@
// copyright-holders:Robbbert
/***************************************************************************
Stuart's Breadboard Project. TMS9995 evaluation kit TMAM6095.
Stuart's Breadboard Project. TMS9995 evaluation kit TMAM6095.
2013-06-02 Skeleton driver.
2013-06-02 Skeleton driver.
http://www.avjd51.dsl.pipex.com/tms9995_eval_module/tms9995_eval_module.htm
http://www.stuartconner.me.uk/tms9995_eval_module/tms9995_eval_module.htm
It uses TMS9902 UART for comms, but our implementation of that chip is
not ready for rs232.h as yet.
Press any key to get it started. All input to be in uppercase. Haven't found
any commands that work as yet.
****************************************************************************/
#include "emu.h"
#include "cpu/tms9900/tms9995.h"
//#include "machine/tms9902.h"
#include "machine/terminal.h"
@ -33,7 +39,9 @@ private:
virtual void machine_reset() override;
uint8_t m_term_data;
uint8_t m_term_out;
required_device<cpu_device> m_maincpu;
bool m_rin;
bool m_rbrl;
required_device<tms9995_device> m_maincpu;
required_device<generic_terminal_device> m_terminal;
};
@ -44,8 +52,10 @@ ADDRESS_MAP_END
static ADDRESS_MAP_START( io_map, AS_IO, 8, evmbug_state )
ADDRESS_MAP_UNMAP_HIGH
AM_RANGE(0x0000, 0x0007) AM_WRITE(rs232_w)
AM_RANGE(0x0000, 0x0002) AM_READ(rs232_r)
//AM_RANGE(0x0000, 0x0003) AM_DEVREAD("uart1", tms9902_device, cruread)
//AM_RANGE(0x0000, 0x001f) AM_DEVWRITE("uart1", tms9902_device, cruwrite)
AM_RANGE(0x0000, 0x0003) AM_READ(rs232_r)
AM_RANGE(0x0000, 0x001f) AM_WRITE(rs232_w)
ADDRESS_MAP_END
/* Input ports */
@ -54,60 +64,64 @@ INPUT_PORTS_END
READ8_MEMBER( evmbug_state::rs232_r )
{
static uint8_t temp = 0;
temp^=0xff;
if (offset == 1)
return temp;
if (offset == 0)
return m_term_data;
else
if (offset == 2)
return (m_rbrl ? 0x20 : 0) | 0xc0;
else
{
return 0xff;//(m_term_data) ? 0 : 0xff;
m_rin ^= 1;
return m_rin << 7;
}
uint8_t ret = m_term_data;
m_term_data = 0;
return ret;
}
WRITE8_MEMBER( evmbug_state::rs232_w )
{
if (offset == 0)
m_term_out = 0;
if (offset < 8)
{
if (offset == 0)
m_term_out = 0;
m_term_out |= (data << offset);
m_term_out |= (data << offset);
if (offset == 7)
m_terminal->write(space, 0, m_term_out & 0x7f);
if (offset == 7)
m_terminal->write(space, 0, m_term_out & 0x7f);
}
else
if (offset == 18)
m_rbrl = 0;
}
void evmbug_state::kbd_put(u8 data)
{
m_term_data = data;
m_rbrl = data ? 1 : 0;
}
void evmbug_state::machine_reset()
{
m_term_data = 0;
m_rbrl = 0;
// Disable auto wait state generation by raising the READY line on reset
static_cast<tms9995_device*>(machine().device("maincpu"))->ready_line(ASSERT_LINE);
m_maincpu->ready_line(ASSERT_LINE);
}
static MACHINE_CONFIG_START( evmbug )
// basic machine hardware
// TMS9995 CPU @ 12.0 MHz
// We have no lines connected yet
MCFG_TMS99xx_ADD("maincpu", TMS9995, 12000000, mem_map, io_map )
MCFG_TMS99xx_ADD("maincpu", TMS9995, XTAL_12MHz, mem_map, io_map )
/* video hardware */
MCFG_DEVICE_ADD("terminal", GENERIC_TERMINAL, 0)
MCFG_GENERIC_TERMINAL_KEYBOARD_CB(PUT(evmbug_state, kbd_put))
//MCFG_DEVICE_ADD("uart1", TMS9902, XTAL_12MHz / 4)
MACHINE_CONFIG_END
/* ROM definition */
ROM_START( evmbug )
ROM_REGION( 0x10000, "maincpu", ROMREGION_ERASEFF )
// ROM_LOAD( "u8.bin", 0x0000, 0x1000, CRC(bdb8c7bd) SHA1(340829dcb7a65f2e830fd5aff82a312e3ed7918f) )
// ROM_LOAD( "u9.bin", 0x1000, 0x0800, CRC(4de459ea) SHA1(00a42fe556d4ffe1f85b2ce369f544b07fbd06d9) )
ROM_LOAD( "evmbug.bin", 0x0000, 0x8000, CRC(a239ec56) SHA1(65b500d7d0f897ce0c320cf3ec32ff4042774599) )
ROM_END