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(MESS) megadriv.c: fixed FRAM saving in Sonic 3 (got lost in some copy&paste I did before the commit :( ).

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also fixed access to last byte of SRAM. no whatsnew.
This commit is contained in:
Fabio Priuli 2013-02-11 15:37:34 +00:00
parent 497661c016
commit da5163f0a7
2 changed files with 9 additions and 2 deletions
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10
src/mess/machine/md_rom.c
View File

@ -285,7 +285,7 @@ READ16_MEMBER(md_rom_sram_device::read)
// we access nvram only if m_nvram_handlers_installed has been turned on // we access nvram only if m_nvram_handlers_installed has been turned on
if (m_nvram_handlers_installed) if (m_nvram_handlers_installed)
{ {
if (offset >= m_nvram_start/2 && offset < m_nvram_end/2 && m_nvram_active) if (offset >= m_nvram_start/2 && offset <= m_nvram_end/2 && m_nvram_active)
return m_nvram[offset - m_nvram_start/2]; return m_nvram[offset - m_nvram_start/2];
} }
if (offset < 0x400000/2) if (offset < 0x400000/2)
@ -326,7 +326,7 @@ WRITE16_MEMBER(md_rom_sram_device::write_a13)
READ16_MEMBER(md_rom_fram_device::read) READ16_MEMBER(md_rom_fram_device::read)
{ {
if (offset >= m_nvram_start/2 && offset < m_nvram_end/2 && m_nvram_active) if (offset >= m_nvram_start/2 && offset <= m_nvram_end/2 && m_nvram_active)
return m_nvram[offset - m_nvram_start/2]; return m_nvram[offset - m_nvram_start/2];
if (offset < 0x400000/2) if (offset < 0x400000/2)
return m_rom[MD_ADDR(offset)]; return m_rom[MD_ADDR(offset)];
@ -334,6 +334,12 @@ READ16_MEMBER(md_rom_fram_device::read)
return 0xffff; return 0xffff;
} }
WRITE16_MEMBER(md_rom_fram_device::write)
{
if (offset >= m_nvram_start/2 && offset <= m_nvram_end/2 && m_nvram_active)
m_nvram[offset - m_nvram_start/2] = data;
}
WRITE16_MEMBER(md_rom_fram_device::write_a13) WRITE16_MEMBER(md_rom_fram_device::write_a13)
{ {
if (offset == 0xf0/2) if (offset == 0xf0/2)

1
src/mess/machine/md_rom.h
View File

@ -56,6 +56,7 @@ public:
// reading and writing // reading and writing
virtual DECLARE_READ16_MEMBER(read); virtual DECLARE_READ16_MEMBER(read);
virtual DECLARE_WRITE16_MEMBER(write);
virtual DECLARE_READ16_MEMBER(read_a13); virtual DECLARE_READ16_MEMBER(read_a13);
virtual DECLARE_WRITE16_MEMBER(write_a13); virtual DECLARE_WRITE16_MEMBER(write_a13);
}; };