1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
|
// license:???
// copyright-holders:???
#include "lpc-rtc.h"
const device_type LPC_RTC = &device_creator<lpc_rtc_device>;
DEVICE_ADDRESS_MAP_START(map, 32, lpc_rtc_device)
AM_RANGE(0x70, 0x77) AM_READWRITE8(index_r, index_w, 0x00ff00ff)
AM_RANGE(0x70, 0x77) AM_READWRITE8(target_r, target_w, 0xff00ff00)
ADDRESS_MAP_END
DEVICE_ADDRESS_MAP_START(extmap, 32, lpc_rtc_device)
AM_RANGE(0x70, 0x77) AM_READWRITE8(extindex_r, extindex_w, 0x00ff0000)
AM_RANGE(0x70, 0x77) AM_READWRITE8(exttarget_r, exttarget_w, 0xff000000)
ADDRESS_MAP_END
lpc_rtc_device::lpc_rtc_device(const machine_config &mconfig, const char *tag, device_t *owner, UINT32 clock)
: lpc_device(mconfig, LPC_RTC, "LPC RTC", tag, owner, clock, "lpc_rtc", __FILE__)
{
}
void lpc_rtc_device::map_device(UINT64 memory_window_start, UINT64 memory_window_end, UINT64 memory_offset, address_space *memory_space,
UINT64 io_window_start, UINT64 io_window_end, UINT64 io_offset, address_space *io_space)
{
io_space->install_device(io_offset, io_window_end, *this, &lpc_rtc_device::map);
}
void lpc_rtc_device::map_extdevice(UINT64 memory_window_start, UINT64 memory_window_end, UINT64 memory_offset, address_space *memory_space,
UINT64 io_window_start, UINT64 io_window_end, UINT64 io_offset, address_space *io_space)
{
io_space->install_device(io_offset, io_window_end, *this, &lpc_rtc_device::extmap);
}
void lpc_rtc_device::device_start()
{
memset(ram, 0, 256);
}
void lpc_rtc_device::device_reset()
{
}
READ8_MEMBER( lpc_rtc_device::index_r)
{
return cur_index;
}
WRITE8_MEMBER( lpc_rtc_device::index_w)
{
cur_index = data & 0x7f;
}
READ8_MEMBER( lpc_rtc_device::target_r)
{
return ram[cur_index];
}
WRITE8_MEMBER( lpc_rtc_device::target_w)
{
ram[cur_index] = data;
logerror("%s: ram[%02x] = %02x\n", tag(), cur_index, data);
}
READ8_MEMBER( lpc_rtc_device::extindex_r)
{
return cur_extindex;
}
WRITE8_MEMBER( lpc_rtc_device::extindex_w)
{
cur_extindex = data & 0x7f;
}
READ8_MEMBER( lpc_rtc_device::exttarget_r)
{
return ram[cur_extindex|128];
}
WRITE8_MEMBER( lpc_rtc_device::exttarget_w)
{
ram[cur_extindex|128] = data;
logerror("%s: ram[%02x] = %02x\n", tag(), cur_extindex|128, data);
}
|