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okean240.cpp: Use PIT as baud rate generator (nw)

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This commit is contained in:
AJR 2017-10-22 23:28:03 -04:00
parent b5da9a14f3
commit 9dcdae1f48
1 changed files with 8 additions and 6 deletions
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14
src/mame/drivers/okean240.cpp
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@ -52,7 +52,6 @@ Usage of terminal:
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/keyboard.h"
#include "machine/clock.h"
#include "machine/i8251.h"
#include "machine/i8255.h"
#include "machine/pic8259.h"
@ -499,10 +498,6 @@ static MACHINE_CONFIG_START( okean240t )
MCFG_CPU_PROGRAM_MAP(okean240_mem)
MCFG_CPU_IO_MAP(okean240t_io)
MCFG_DEVICE_ADD("uart_clock", CLOCK, 153600)
MCFG_CLOCK_SIGNAL_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
MCFG_DEVICE_ADD("uart", I8251, 0)
MCFG_I8251_TXD_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_txd))
MCFG_I8251_DTR_HANDLER(DEVWRITELINE("rs232", rs232_port_device, write_dtr))
@ -524,6 +519,9 @@ static MACHINE_CONFIG_START( okean240t )
MCFG_DEVICE_ADD("ppie", I8255, 0)
MCFG_DEVICE_ADD("pit", PIT8253, 0)
MCFG_PIT8253_CLK1(3072000) // artificial rate
MCFG_PIT8253_OUT1_HANDLER(DEVWRITELINE("uart", i8251_device, write_txc))
MCFG_DEVCB_CHAIN_OUTPUT(DEVWRITELINE("uart", i8251_device, write_rxc))
MCFG_DEVICE_ADD("pic", PIC8259, 0)
@ -553,6 +551,9 @@ static MACHINE_CONFIG_DERIVED( okean240a, okean240t )
MCFG_I8255_IN_PORTA_CB(READ8(okean240_state, okean240a_port40_r))
MCFG_I8255_IN_PORTB_CB(READ8(okean240_state, okean240a_port41_r))
MCFG_I8255_IN_PORTC_CB(READ8(okean240_state, okean240a_port42_r))
MCFG_DEVICE_MODIFY("pit")
MCFG_PIT8253_CLK1(1536000) // artificial rate
MACHINE_CONFIG_END
static MACHINE_CONFIG_DERIVED( okean240, okean240t )
@ -560,8 +561,9 @@ static MACHINE_CONFIG_DERIVED( okean240, okean240t )
MCFG_CPU_IO_MAP(okean240_io)
MCFG_GFXDECODE_ADD("gfxdecode", "palette", okean240)
MCFG_DEVICE_REMOVE("uart")
MCFG_DEVICE_REMOVE("uart_clock")
MCFG_DEVICE_REMOVE("rs232")
MCFG_DEVICE_MODIFY("pit")
MCFG_PIT8253_OUT1_HANDLER(NOOP)
MCFG_DEVICE_ADD("keyboard", GENERIC_KEYBOARD, 0)
MCFG_GENERIC_KEYBOARD_CB(PUT(okean240_state, kbd_put))
MACHINE_CONFIG_END