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MT08308: mk98: [debug] Assertion failed

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- Fixed buffer overflow
- Used array instead of writing to rom region.
This commit is contained in:
Robbbert 2022-04-28 14:25:44 +10:00
parent d7f6c8b551
commit e29812b33e
1 changed files with 3 additions and 5 deletions
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8
src/mame/drivers/mk98.cpp
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@ -70,7 +70,6 @@ public:
, m_pic8259(*this, "pic8259")
, m_screen(*this, "screen")
, m_p_videoram(*this, "video")
, m_p_chargen(*this, "gfx1")
{ }
void mk98(machine_config &config);
@ -103,7 +102,6 @@ private:
void mk98_map(address_map &map);
required_shared_ptr<u8> m_p_videoram;
required_region_ptr<u8> m_p_chargen;
uint32_t screen_update(screen_device &screen, bitmap_ind16 &bitmap, const rectangle &cliprect);
@ -119,6 +117,7 @@ private:
uint8_t m_scancode = 0;
uint8_t m_kbdflag = 0;
int m_kbit = 0;
u8 m_p_chargen[0x800] = { };
};
@ -391,7 +390,8 @@ void mk98_state::video_w(offs_t offset, uint8_t data)
switch (offset)
{
case 2:
if (++m_font_upload > 63)
m_font_upload++;
if ((m_font_upload > 63) && (m_font_upload < 0x840))
m_p_chargen[m_font_upload - 64] = data;
break;
@ -477,8 +477,6 @@ void mk98_state::mk98(machine_config &config)
ROM_START( mk98 )
ROM_REGION(0x20000, "romdos", 0)
ROM_LOAD("e0000.bin", 0, 0x20000, CRC(85785bd5) SHA1(b10811715f44cf8e2b41baea7b62a35082e04048))
ROM_REGION(0x800, "gfx1", ROMREGION_ERASE00)
ROM_END