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(MESS) PP01 : added uart

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This commit is contained in:
Robbbert 2013-09-30 05:26:07 +00:00
parent a984ca3df1
commit 162780bc07
3 changed files with 22 additions and 5 deletions
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10
src/mess/drivers/pp01.c
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@ -31,12 +31,13 @@ static ADDRESS_MAP_START(pp01_mem, AS_PROGRAM, 8, pp01_state )
ADDRESS_MAP_END
static ADDRESS_MAP_START( pp01_io, AS_IO, 8, pp01_state )
AM_RANGE(0xc0, 0xc3) AM_DEVREADWRITE("ppi8255", i8255_device, read, write)
//AM_RANGE(0xc4, 0xc7) AM_DEVREADWRITE("ppi8255", i8255_device, read, write)
AM_RANGE(0xc0, 0xc3) AM_DEVREADWRITE("ppi8255", i8255_device, read, write) // system
//AM_RANGE(0xc4, 0xc7) AM_DEVREADWRITE("ppi8255", i8255_device, read, write) // user
AM_RANGE(0xc8, 0xc8) AM_MIRROR(2) AM_DEVREADWRITE("uart", i8251_device, data_r, data_w)
AM_RANGE(0xc9, 0xc9) AM_MIRROR(2) AM_DEVREADWRITE("uart", i8251_device, status_r, control_w)
AM_RANGE(0xcc, 0xcf) AM_WRITE(pp01_video_write_mode_w)
AM_RANGE(0xd0, 0xd3) AM_DEVREADWRITE("pit8253", pit8253_device, read, write)
AM_RANGE(0xe0, 0xef) AM_READWRITE(pp01_mem_block_r, pp01_mem_block_w)
AM_RANGE(0xf0, 0xff) AM_READWRITE(pp01_mem_block_r, pp01_mem_block_w)
AM_RANGE(0xe0, 0xef) AM_MIRROR(0x10) AM_READWRITE(pp01_mem_block_r, pp01_mem_block_w)
ADDRESS_MAP_END
/* Input ports */
@ -215,6 +216,7 @@ static MACHINE_CONFIG_START( pp01, pp01_state )
//MCFG_SOUND_ROUTE(ALL_OUTPUTS, "mono", 0.25)
/* Devices */
MCFG_I8251_ADD("uart", pp01_uart_intf)
MCFG_PIT8253_ADD( "pit8253", pp01_pit8253_intf )
MCFG_I8255A_ADD( "ppi8255", pp01_ppi8255_interface )

3
src/mess/includes/pp01.h
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@ -10,7 +10,7 @@
#include "emu.h"
#include "cpu/i8085/i8085.h"
#include "machine/ram.h"
//#include "machine/i8251.h"
#include "machine/i8251.h"
#include "machine/pit8253.h"
#include "machine/i8255.h"
#include "sound/speaker.h"
@ -63,6 +63,7 @@ public:
/*----------- defined in machine/pp01.c -----------*/
extern const i8251_interface pp01_uart_intf;
extern const struct pit8253_interface pp01_pit8253_intf;
extern const i8255_interface pp01_ppi8255_interface;

14
src/mess/machine/pp01.c
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@ -228,3 +228,17 @@ I8255A_INTERFACE( pp01_ppi8255_interface )
DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portc_r),
DEVCB_DRIVER_MEMBER(pp01_state,pp01_8255_portc_w)
};
// when rts and dtr are both high, the uart is being used for cassette operations
const i8251_interface pp01_uart_intf =
{
DEVCB_NULL, // in rxd
DEVCB_NULL, // out txd
DEVCB_NULL, // in dsr
DEVCB_NULL, // out dtr
DEVCB_NULL, // out rts
DEVCB_NULL, // out rxrdy
DEVCB_NULL, // out txrdy
DEVCB_NULL, // out txempty
DEVCB_NULL // out syndet
};