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
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
|
/*
ROM / OS loader, TOS
ARAnyM (C) 2005-2006 Patrice Mandin
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., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
*/
#include "sysdeps.h"
#include "cpu_emulation.h"
#include "aramd5.h"
#include "bootos_tos.h"
#include "romdiff.h"
#include "aranym_exception.h"
#include "emul_op.h"
#define DEBUG 0
#include "debug.h"
/* TOS ROM class */
TosBootOs::TosBootOs(void) ARANYM_THROWS(AranymException)
{
tos_patch(true);
}
void TosBootOs::reset(bool cold) ARANYM_THROWS(AranymException)
{
tos_patch(cold);
}
/*--- Private functions ---*/
void TosBootOs::tos_patch(bool cold) ARANYM_THROWS(AranymException)
{
if (strlen(bx_options.tos.tos_path) == 0) {
throw AranymException("Path to TOS ROM image file undefined");
}
load(bx_options.tos.tos_path);
init(cold);
// check if this is the correct 68040 aware TOS ROM version
D(bug("Checking TOS version.."));
static unsigned char const TOS404[16] = {0xe5,0xea,0x0f,0x21,0x6f,0xb4,0x46,0xf1,0xc4,0xa4,0xf4,0x76,0xbc,0x5f,0x03,0xd4};
MD5 md5;
unsigned char loadedTOS[16];
md5.computeSum(ROMBaseHost, RealROMSize, loadedTOS);
if (memcmp(loadedTOS, TOS404, 16) != 0) {
throw AranymException("Wrong TOS version. You need the original TOS 4.04.");
}
// patch it for 68040 compatibility
D(bug("Patching TOS 4.04 for 68040 compatibility.."));
unsigned int ptr, i;
for (i = 0; (ptr=tosdiff[i].start) > 0; i++)
memcpy(&ROMBaseHost[ptr], tosdiff[i].patch, tosdiff[i].len);
// patch cookies
// _MCH
ROMBaseHost[0x00416] = bx_options.tos.cookie_mch >> 24;
ROMBaseHost[0x00417] = (bx_options.tos.cookie_mch >> 16) & 0xff;
ROMBaseHost[0x00418] = (bx_options.tos.cookie_mch >> 8) & 0xff;
ROMBaseHost[0x00419] = (bx_options.tos.cookie_mch) & 0xff;
// _SND
#if DSP_EMULATION
ROMBaseHost[0x00437] = 0x0E; /* DSP, XBIOS, DMA8 */
#else
ROMBaseHost[0x00437] = 0x06; /* XBIOS, DMA8 */
#endif
if (FastRAMSize > 0) {
int i;
// patch to show FastRAM memory test
i = 0x001CC;
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0xF9; // JMP <abs.addr>
ROMBaseHost[i++] = 0x00; // Can't use JSR, stack pointer
ROMBaseHost[i++] = 0xE7; // is not initialized yet.
ROMBaseHost[i++] = 0xFF;
ROMBaseHost[i++] = 0x00; // abs.addr = $E7FF00
i = 0x7FF00;
uint32 ramtop = (FastRAMBase + FastRAMSize);
ROMBaseHost[i++] = 0x21;
ROMBaseHost[i++] = 0xFC; // MOVE.L #imm, abs.addr.w
ROMBaseHost[i++] = ramtop >> 24;
ROMBaseHost[i++] = ramtop >> 16;
ROMBaseHost[i++] = ramtop >> 8;
ROMBaseHost[i++] = ramtop;
ROMBaseHost[i++] = 0x05;
ROMBaseHost[i++] = 0xA4; // abs.addr.w = $5A4 - ramtop
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0xF9; // JMP <abs.addr>
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0xE0;
ROMBaseHost[i++] = 0x01;
ROMBaseHost[i++] = 0xD2; // abs.addr = $E001D2
// Patch to make FastRAM available to GEMDOS
i = 0x0096E;
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0xB9; // JSR <abs.addr>
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0xE7;
ROMBaseHost[i++] = 0xFF;
ROMBaseHost[i++] = 0x0E; // abs.addr = $E7FF0E
i = 0x7FF0E;
// Declare FastRAM with Maddalt()
ROMBaseHost[i++] = 0x2F;
ROMBaseHost[i++] = 0x3C; // MOVE.L #imm, -(sp)
ROMBaseHost[i++] = FastRAMSize >> 24;
ROMBaseHost[i++] = FastRAMSize >> 16;
ROMBaseHost[i++] = FastRAMSize >> 8;
ROMBaseHost[i++] = FastRAMSize;
ROMBaseHost[i++] = 0x2F;
ROMBaseHost[i++] = 0x3C; // MOVE.L #imm, -(sp)
ROMBaseHost[i++] = FastRAMBase >> 24;
ROMBaseHost[i++] = FastRAMBase >> 16;
ROMBaseHost[i++] = FastRAMBase >> 8;
ROMBaseHost[i++] = FastRAMBase;
ROMBaseHost[i++] = 0x3F;
ROMBaseHost[i++] = 0x3C; // MOVE.W #imm, -(sp)
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x14; // imm = $14 - Maddalt()
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0x41; // TRAP #1
ROMBaseHost[i++] = 0x4F;
ROMBaseHost[i++] = 0xEF; // LEA d16(sp), sp
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x0A; // d16 = $A
// Allocate 64k _FRB buffer
ROMBaseHost[i++] = 0x42;
ROMBaseHost[i++] = 0x67; // CLR.W -(sp) - ST-Ram only
ROMBaseHost[i++] = 0x2F;
ROMBaseHost[i++] = 0x3C; // MOVE.L #imm, -(sp)
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x01;
ROMBaseHost[i++] = 0x20;
ROMBaseHost[i++] = 0x00; // imm = 64k + 8k
ROMBaseHost[i++] = 0x3F;
ROMBaseHost[i++] = 0x3C; // MOVE.W #imm, -(sp)
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x44; // imm = $44 - Mxalloc()
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0x41; // TRAP #1
ROMBaseHost[i++] = 0x50;
ROMBaseHost[i++] = 0x4F; // ADDQ.W #8,sp
ROMBaseHost[i++] = 0x06;
ROMBaseHost[i++] = 0x80; // ADDI.L #imm, d0
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x1F;
ROMBaseHost[i++] = 0xFF; // imm = 8k - 1
ROMBaseHost[i++] = 0x02;
ROMBaseHost[i++] = 0x40; // ANDI.W #imm, d0
ROMBaseHost[i++] = 0xE0;
ROMBaseHost[i++] = 0x00; // imm = $E000 - 8k alignment
// Store _FRB cookie
ROMBaseHost[i++] = 0x20;
ROMBaseHost[i++] = 0x78; // MOVEA.L addr.w, a0
ROMBaseHost[i++] = 0x05;
ROMBaseHost[i++] = 0xA0; // addr.w = 0x5A0 - cookie jar
ROMBaseHost[i++] = 0x51;
ROMBaseHost[i++] = 0x48; // SUBQ.W #8,a0
// .find_last_cookie:
ROMBaseHost[i++] = 0x50;
ROMBaseHost[i++] = 0x48; // ADDQ.W #8,a0
ROMBaseHost[i++] = 0x4A;
ROMBaseHost[i++] = 0x90; // TST.L (a0)
ROMBaseHost[i++] = 0x66;
ROMBaseHost[i++] = 0xFA; // BNE.S .find_last_cookie
ROMBaseHost[i++] = 0x20;
ROMBaseHost[i++] = 0xFC; // MOVE.L #imm, (a0)+
ROMBaseHost[i++] = 0x5F;
ROMBaseHost[i++] = 0x46;
ROMBaseHost[i++] = 0x52;
ROMBaseHost[i++] = 0x42; // imm = '_FRB'
ROMBaseHost[i++] = 0x21;
ROMBaseHost[i++] = 0x50; // MOVE.L (a0), 8(a0)
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0x08; // d16 = 8 - copy jar size
ROMBaseHost[i++] = 0x20;
ROMBaseHost[i++] = 0xC0; // MOVE.L d0,(a0)+
ROMBaseHost[i++] = 0x42;
ROMBaseHost[i++] = 0x90; // CLR.L (a0)
// Code overwritten by JSR
ROMBaseHost[i++] = 0x70;
ROMBaseHost[i++] = 0x03; // MOVEQ.L #3,d0
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0xB9; // JSR <abs.addr>
ROMBaseHost[i++] = 0x00;
ROMBaseHost[i++] = 0xE0;
ROMBaseHost[i++] = 0x0B;
ROMBaseHost[i++] = 0xD2; // abs.addr = $E00BD2
ROMBaseHost[i++] = 0x4E;
ROMBaseHost[i++] = 0x75; // RTS
}
// Xconout patch
if (bx_options.tos.redirect_CON) {
ROMBaseHost[0x8d44] = ROMBaseHost[0x8d50] = M68K_EMUL_OP_PUT_SCRAP >> 8;
ROMBaseHost[0x8d45] = ROMBaseHost[0x8d51] = M68K_EMUL_OP_PUT_SCRAP & 0xff;
ROMBaseHost[0x8d46] = ROMBaseHost[0x8d52] = 0x4e; // RTS
ROMBaseHost[0x8d47] = ROMBaseHost[0x8d53] = 0x75;
}
else {
ROMBaseHost[0x8d44] = 0xc2;
ROMBaseHost[0x8d45] = 0x7c;
ROMBaseHost[0x8d46] = 0x00;
ROMBaseHost[0x8d47] = 0xff;
ROMBaseHost[0x8d50] = 0x28;
ROMBaseHost[0x8d51] = 0x79;
ROMBaseHost[0x8d52] = 0x00;
ROMBaseHost[0x8d53] = 0xe4;
}
infoprint("TOS 4.04 loading... [OK]");
}
|
