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
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
|
/* spec16.c: Spectrum 16K specific routines
Copyright (c) 1999-2009 Philip Kendall
$Id: spec16.c 4060 2009-07-30 13:21:38Z fredm $
This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License along
with this program; if not, write to the Free Software Foundation, Inc.,
51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
Author contact information:
E-mail: philip-fuse@shadowmagic.org.uk
*/
#include <config.h>
#include <stdio.h>
#include <string.h>
#include <libspectrum.h>
#include "joystick.h"
#include "machine.h"
#include "machines.h"
#include "memory.h"
#include "periph.h"
#include "printer.h"
#include "settings.h"
#include "spec48.h"
#include "ula.h"
#include "if1.h"
static int spec16_reset( void );
static libspectrum_byte empty_chunk[ MEMORY_PAGE_SIZE ];
static memory_page empty_mapping;
static const periph_t peripherals[] = {
{ 0x0001, 0x0000, ula_read, ula_write },
{ 0x0004, 0x0000, printer_zxp_read, printer_zxp_write },
{ 0x00e0, 0x0000, joystick_kempston_read, NULL },
};
static const size_t peripherals_count =
sizeof( peripherals ) / sizeof( periph_t );
int spec16_init( fuse_machine_info *machine )
{
machine->machine = LIBSPECTRUM_MACHINE_16;
machine->id = "16";
machine->reset = spec16_reset;
machine->timex = 0;
machine->ram.port_from_ula = spec48_port_from_ula;
machine->ram.contend_delay = spectrum_contend_delay_65432100;
machine->ram.contend_delay_no_mreq = spectrum_contend_delay_65432100;
memset( empty_chunk, 0xff, MEMORY_PAGE_SIZE );
empty_mapping.page = empty_chunk;
empty_mapping.writable = 0;
empty_mapping.contended = 0;
empty_mapping.bank = MEMORY_BANK_NONE;
empty_mapping.source = MEMORY_SOURCE_SYSTEM;
machine->unattached_port = spectrum_unattached_port;
machine->shutdown = NULL;
machine->memory_map = spec48_memory_map;
return 0;
}
static int
spec16_reset( void )
{
int error;
size_t i;
error = machine_load_rom( 0, 0, settings_current.rom_16,
settings_default.rom_16, 0x4000 );
if( error ) return error;
error = periph_setup( peripherals, peripherals_count );
if( error ) return error;
periph_setup_kempston( PERIPH_PRESENT_OPTIONAL );
periph_setup_interface1( PERIPH_PRESENT_OPTIONAL );
periph_setup_interface2( PERIPH_PRESENT_OPTIONAL );
periph_setup_opus( PERIPH_PRESENT_OPTIONAL );
periph_setup_plusd( PERIPH_PRESENT_OPTIONAL );
periph_setup_beta128( PERIPH_PRESENT_OPTIONAL );
periph_setup_fuller( PERIPH_PRESENT_OPTIONAL );
periph_setup_melodik( PERIPH_PRESENT_OPTIONAL );
periph_update();
/* ROM 0, RAM 5, nothing, nothing */
memory_map_home[0] = &memory_map_rom[ 0];
memory_map_home[1] = &memory_map_rom[ 1];
memory_map_home[2] = &memory_map_ram[10];
memory_map_home[3] = &memory_map_ram[11];
memory_map_home[4] = memory_map_home[5] = &empty_mapping;
memory_map_home[6] = memory_map_home[7] = &empty_mapping;
/* The RAM page is present/writable and contended */
for( i = 2; i <= 3; i++ ) {
memory_map_home[ i ]->writable = 1;
memory_map_home[ i ]->contended = 1;
}
for( i = 0; i < 8; i++ )
memory_map_read[i] = memory_map_write[i] = *memory_map_home[i];
memory_current_screen = 5;
memory_screen_mask = 0xffff;
spec48_common_display_setup();
return 0;
}
|
