![[BACK]](/cvsweb/icons/back.gif){kind=icon}
Return to romimg_x68k.cpp CVS log ![[TXT]](/cvsweb/icons/text.gif){kind=icon}
![[DIR]](/cvsweb/icons/dir.gif){kind=icon}
Up to [Isaki's NoNo m68k/m88k emulator] / nono / vm|
Return to romimg_x68k.cpp CVS log | Up to [Isaki's NoNo m68k/m88k emulator] / nono / vm |
1.1 root 1: //
2: // nono
1.1.1.2 root 3: // Copyright (C) 2020 nono project
4: // Licensed under nono-license.txt
1.1 root 5: //
6:
7: #include "romimg_x68k.h"
8: #include "cgrom.h"
9: #include "mainapp.h"
10: #include "pluto.h"
11: #include "scheduler.h"
12:
1.1.1.3 root 13: std::unique_ptr<CGROMDevice> gCGROM;
1.1.1.5 root 14: std::unique_ptr<IPLROM0Device> gIPLROM0;
1.1.1.3 root 15: std::unique_ptr<IPLROM1Device> gIPLROM1;
16: std::unique_ptr<IPLROM2Device> gIPLROM2;
17:
1.1 root 18: //
1.1.1.5 root 19: // IPLROM0 は IPLROM(1) のブートページ担当。
20: // これ自身はメモリ領域を持たず IPLROM1 へのプロキシとして動作する。
21: //
22: // X680x0 のブートページは $000000..$00ffff の 64KB で、
23: // ここへのアクセスは $ff0000..$ffffff (IPLROM1 の後半 64KB) が見える。
24: // ROM へアクセスがあればブートページを RAM に切り替える。
25: // そのため、RAM 側も ROM 側もこいつが応対する必要がある。
26:
27: IPLROM0Device::IPLROM0Device()
1.1.1.6 ! root 28: : inherited("IPLROM(0)")
1.1.1.5 root 29: {
1.1.1.6 ! root 30: ClearAlias();
! 31: AddAlias("IPLROM0");
! 32:
1.1.1.5 root 33: mask = 0x10000 - 1;
34: }
35:
36: IPLROM0Device::~IPLROM0Device()
37: {
38: }
39:
40: bool
41: IPLROM0Device::Init()
42: {
43: iplrom1 = gIPLROM1.get();
44: return true;
45: }
46:
47: void
48: IPLROM0Device::ResetHard()
49: {
50: gVM->SwitchBootPage(this, true);
51: }
52:
53: uint64
54: IPLROM0Device::Read8(uint32 addr)
55: {
56: if (addr < 0x10000) {
57: return iplrom1->Read8(addr + 0x10000);
58: } else {
59: gVM->SwitchBootPage(this, false);
60: return iplrom1->Read8(addr);
61: }
62: }
63:
64: uint64
65: IPLROM0Device::Read16(uint32 addr)
66: {
67: if (addr < 0x10000) {
68: return iplrom1->Read16(addr + 0x10000);
69: } else {
70: gVM->SwitchBootPage(this, false);
71: return iplrom1->Read16(addr);
72: }
73: }
74:
75: uint64
76: IPLROM0Device::Read32(uint32 addr)
77: {
78: if (addr < 0x10000) {
79: return iplrom1->Read32(addr + 0x10000);
80: } else {
81: gVM->SwitchBootPage(this, false);
82: return iplrom1->Read32(addr);
83: }
84: }
85:
86: // Write は RAM 領域へも ROM 領域へも発生しないはずなので基底のを使う。
87:
88: uint64
89: IPLROM0Device::Peek8(uint32 addr)
90: {
91: if (addr < 0x10000) {
92: return iplrom1->Peek8(addr + 0x10000);
93: } else {
94: return iplrom1->Peek8(addr);
95: }
96: }
97:
98:
99: //
1.1 root 100: // IPLROM(1)
101: //
102:
103: IPLROM1Device::IPLROM1Device()
1.1.1.6 ! root 104: : inherited("IPLROM(1)")
1.1 root 105: {
1.1.1.6 ! root 106: ClearAlias();
! 107: AddAlias("IPLROM1");
! 108:
1.1 root 109: devaddr = 0xfe0000;
110: devlen = 0x020000;
111: mask = devlen - 1;
112: }
113:
114: IPLROM1Device::~IPLROM1Device()
115: {
116: }
117:
118: bool
119: IPLROM1Device::Init()
120: {
121: std::string name;
122:
123: if (gMainApp.benchmark_mode != 0) {
124: name = string_format("BENCH%02d.ROM", gMainApp.benchmark_mode);
125: } else {
126: name = "IPLROM30.DAT";
127: }
128:
129: if (LoadROM(name.c_str(), 128 * 1024) == false) {
130: return false;
131: }
132: return true;
133: }
134:
135:
136: //
137: // IPLROM(2)
138: //
139:
140: IPLROM2Device::IPLROM2Device()
1.1.1.6 ! root 141: : inherited("IPLROM(2)")
1.1 root 142: {
1.1.1.6 ! root 143: ClearAlias();
! 144: AddAlias("IPLROM2");
! 145:
1.1 root 146: devaddr = 0xfc0000;
147: devlen = 0x020000;
148: mask = devlen - 1;
149: }
150:
151: IPLROM2Device::~IPLROM2Device()
152: {
153: }
154:
155: bool
156: IPLROM2Device::Init()
157: {
158: if (gMainApp.benchmark_mode != 0) {
159: return true;
160: }
161:
162: if (LoadROM("ROM30.DAT", 128 * 1024) == false) {
163: return false;
164: }
165: return true;
166: }
167:
168:
169: //
170: // CGROM
171: //
172:
173: CGROMDevice::CGROMDevice()
1.1.1.6 ! root 174: : inherited("CGROM")
1.1 root 175: {
176: devaddr = 0xf00000;
177: devlen = 768 * 1024;
178: mask = 1024 * 1024 - 1;
179: }
180:
181: CGROMDevice::~CGROMDevice()
182: {
183: }
184:
185: bool
186: CGROMDevice::Init()
187: {
188: #if 0
189: mem = builtin_cgrom;
190: #else
191: if (LoadROM("CGROM30.DAT", 768 * 1024) == false) {
192: return false;
193: }
194: #endif
195: return true;
196: }
This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.