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https://github.com/holub/mame
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stv.cpp: moved the few remaining protection functions in stvprot.cpp to the driver file and eliminated strvprot.*
This commit is contained in:
Ivan Vangelista
parent
c5e60d1554
commit
682090918b
@ -3631,8 +3631,6 @@ files {
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MAME_DIR .. "src/mame/machine/saturn_cdb.cpp",
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MAME_DIR .. "src/mame/machine/saturn_cdb.h",
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MAME_DIR .. "src/mame/includes/stv.h",
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MAME_DIR .. "src/mame/machine/stvprot.cpp",
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MAME_DIR .. "src/mame/machine/stvprot.h",
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MAME_DIR .. "src/mame/machine/315-5838_317-0229_comp.cpp",
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MAME_DIR .. "src/mame/machine/315-5838_317-0229_comp.h",
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MAME_DIR .. "src/mame/drivers/suprloco.cpp",
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@ -9,7 +9,7 @@
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TODO:
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- clean this up!
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- Properly emulate the protection chips, used by several games (check stvprot.cpp for more info)
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- Properly emulate the protection chips, used by several games
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(per-game issues)
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- stress: accesses the Sound Memory Expansion Area (0x05a80000-0x05afffff), unknown purpose;
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@ -43,7 +43,6 @@
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#include "cpu/sh/sh2.h"
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#include "machine/smpc.h"
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#include "machine/stvcd.h"
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#include "machine/stvprot.h"
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#include "sound/scsp.h"
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#include "softlist.h"
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@ -264,6 +263,93 @@ void stv_state::hop_ioga_w(offs_t offset, uint8_t data)
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stv_ioga_w(offset, data);
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}
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// ST-V hookup for 315-5881 encryption/compression chip
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/*
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Known ST-V Games using this kind of protection
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Astra Superstars (text layer gfx transfer)
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Elandoree (gfx transfer of textures)
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Final Fight Revenge (boot vectors etc.)
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Radiant Silvergun (game start protection)
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Steep Slope Sliders (gfx transfer of character portraits)
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Tecmo World Cup '98 (Tecmo logo, player movement)
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*/
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/*************************************
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*
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* Common Handlers
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*
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*************************************/
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uint32_t stv_state::common_prot_r(offs_t offset)
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{
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uint32_t *ROM = (uint32_t *)memregion("abus")->base();
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if(m_abus_protenable & 0x00010000)//protection calculation is activated
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{
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if(offset == 3)
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{
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uint8_t* base;
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uint16_t res = m_cryptdevice->do_decrypt(base);
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uint16_t res2 = m_cryptdevice->do_decrypt(base);
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res = ((res & 0xff00) >> 8) | ((res & 0x00ff) << 8);
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res2 = ((res2 & 0xff00) >> 8) | ((res2 & 0x00ff) << 8);
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return res2 | (res << 16);
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}
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return m_a_bus[offset];
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}
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else
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{
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if(m_a_bus[offset] != 0) return m_a_bus[offset];
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else return ROM[(0x02fffff0/4)+offset];
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}
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}
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uint16_t stv_state::crypt_read_callback(uint32_t addr)
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{
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uint16_t dat= m_maincpu->space().read_word((0x02000000+2*addr));
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return ((dat&0xff00)>>8)|((dat&0x00ff)<<8);
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}
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void stv_state::common_prot_w(offs_t offset, uint32_t data, uint32_t mem_mask)
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{
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COMBINE_DATA(&m_a_bus[offset]);
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if (offset == 0)
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{
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COMBINE_DATA(&m_abus_protenable);
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}
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else if(offset == 2)
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{
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if (ACCESSING_BITS_16_31) m_cryptdevice->set_addr_low(data >> 16);
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if (ACCESSING_BITS_0_15) m_cryptdevice->set_addr_high(data&0xffff);
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}
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else if(offset == 3)
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{
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COMBINE_DATA(&m_abus_protkey);
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m_cryptdevice->set_subkey(m_abus_protkey>>16);
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}
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}
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void stv_state::install_common_protection()
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{
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m_maincpu->space(AS_PROGRAM).install_read_handler(0x4fffff0, 0x4ffffff, read32sm_delegate(*this, FUNC(stv_state::common_prot_r)));
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m_maincpu->space(AS_PROGRAM).install_write_handler(0x4fffff0, 0x4ffffff, write32s_delegate(*this, FUNC(stv_state::common_prot_w)));
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}
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void stv_state::stv_register_protection_savestates()
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{
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save_item(NAME(m_a_bus));
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}
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/*
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06013AE8: MOV.L @($D4,PC),R5
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@ -1265,7 +1351,7 @@ MACHINE_START_MEMBER(stv_state, stv)
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save_item(NAME(m_scsp_last_line));
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save_item(NAME(m_vdp2.odd));
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stv_register_protection_savestates(); // machine/stvprot.c
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stv_register_protection_savestates();
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m_audiocpu->set_reset_callback(*this, FUNC(stv_state::m68k_reset_callback));
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}
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@ -125,7 +125,7 @@ private:
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uint8_t m_ioga_portg;
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uint16_t m_serial_tx;
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// protection specific variables and functions (see machine/stvprot.cpp)
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// protection specific variables and functions
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uint32_t m_abus_protenable;
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uint32_t m_abus_protkey;
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@ -1,94 +0,0 @@
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// license:LGPL-2.1+
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// copyright-holders:David Haywood, Angelo Salese, Olivier Galibert, Mariusz Wojcieszek, R. Belmont
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/* ST-V hookup for 315-5881 encryption/compression chip */
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/*
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Known ST-V Games using this kind of protection
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Astra Superstars (text layer gfx transfer)
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Elandoree (gfx transfer of textures)
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Final Fight Revenge (boot vectors etc.)
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Radiant Silvergun (game start protection)
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Steep Slope Sliders (gfx transfer of character portraits)
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Tecmo World Cup '98 (tecmo logo, player movement)
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*/
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#include "emu.h"
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#include "includes/stv.h"
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/*************************************
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*
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* Common Handlers
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*
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*************************************/
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uint32_t stv_state::common_prot_r(offs_t offset)
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{
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uint32_t *ROM = (uint32_t *)machine().root_device().memregion("abus")->base();
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if(m_abus_protenable & 0x00010000)//protection calculation is activated
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{
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if(offset == 3)
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{
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uint8_t* base;
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uint16_t res = m_cryptdevice->do_decrypt(base);
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uint16_t res2 = m_cryptdevice->do_decrypt(base);
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res = ((res & 0xff00) >> 8) | ((res & 0x00ff) << 8);
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res2 = ((res2 & 0xff00) >> 8) | ((res2 & 0x00ff) << 8);
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return res2 | (res << 16);
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}
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return m_a_bus[offset];
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}
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else
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{
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if(m_a_bus[offset] != 0) return m_a_bus[offset];
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else return ROM[(0x02fffff0/4)+offset];
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}
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}
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uint16_t stv_state::crypt_read_callback(uint32_t addr)
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{
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uint16_t dat= m_maincpu->space().read_word((0x02000000+2*addr));
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return ((dat&0xff00)>>8)|((dat&0x00ff)<<8);
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}
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void stv_state::common_prot_w(offs_t offset, uint32_t data, uint32_t mem_mask)
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{
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COMBINE_DATA(&m_a_bus[offset]);
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if (offset == 0)
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{
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COMBINE_DATA(&m_abus_protenable);
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}
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else if(offset == 2)
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{
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if (ACCESSING_BITS_16_31) m_cryptdevice->set_addr_low(data >> 16);
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if (ACCESSING_BITS_0_15) m_cryptdevice->set_addr_high(data&0xffff);
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}
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else if(offset == 3)
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{
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COMBINE_DATA(&m_abus_protkey);
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m_cryptdevice->set_subkey(m_abus_protkey>>16);
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}
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}
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void stv_state::install_common_protection()
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{
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m_maincpu->space(AS_PROGRAM).install_read_handler(0x4fffff0, 0x4ffffff, read32sm_delegate(*this, FUNC(stv_state::common_prot_r)));
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m_maincpu->space(AS_PROGRAM).install_write_handler(0x4fffff0, 0x4ffffff, write32s_delegate(*this, FUNC(stv_state::common_prot_w)));
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}
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void stv_state::stv_register_protection_savestates()
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{
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save_item(NAME(m_a_bus));
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}
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@ -1,2 +0,0 @@
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// license:LGPL-2.1+
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// copyright-holders:David Haywood, Angelo Salese, Olivier Galibert, Mariusz Wojcieszek, R. Belmont
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