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mach32,mach64: fixed crash when reading vblank state.

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This commit is contained in:
mahlemiut 2014-09-10 02:54:07 +00:00
parent 7d1e764aee
commit ffa4d22438
4 changed files with 18 additions and 6 deletions
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10
src/emu/bus/isa/mach32.c
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@ -54,6 +54,11 @@ machine_config_constructor mach32_device::device_mconfig_additions() const
return MACHINE_CONFIG_NAME( mach32_8514a );
}
void mach32_8514a_device::device_config_complete()
{
m_vga = dynamic_cast<vga_device*>(owner());
}
void mach32_8514a_device::device_start()
{
mach8_device::device_start();
@ -118,6 +123,11 @@ machine_config_constructor mach64_device::device_mconfig_additions() const
return MACHINE_CONFIG_NAME( mach64_8514a );
}
void mach64_8514a_device::device_config_complete()
{
m_vga = dynamic_cast<vga_device*>(owner());
}
void mach64_8514a_device::device_start()
{
mach32_8514a_device::device_start();

2
src/emu/bus/isa/mach32.h
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@ -27,6 +27,7 @@ public:
protected:
virtual void device_start();
virtual void device_reset();
virtual void device_config_complete();
UINT16 m_chip_ID;
UINT16 m_membounds;
@ -142,6 +143,7 @@ public:
protected:
virtual void device_start();
virtual void device_reset();
virtual void device_config_complete();
};
// main SVGA device

8
src/emu/video/pc_vga.c
View File

@ -5164,12 +5164,12 @@ READ8_MEMBER(ati_vga_device::mem_r)
if(ati.ext_reg[0x3d] & 0x04)
{
offset &= 0x1ffff;
return vga.memory[(offset+svga.bank_r*0x20000)];
return vga.memory[(offset+svga.bank_r*0x20000) % vga.svga_intf.vram_size];
}
else
{
offset &= 0xffff;
return vga.memory[(offset+svga.bank_r*0x10000)];
return vga.memory[(offset+svga.bank_r*0x10000) % vga.svga_intf.vram_size];
}
}
@ -5183,12 +5183,12 @@ WRITE8_MEMBER(ati_vga_device::mem_w)
if(ati.ext_reg[0x3d] & 0x04)
{
offset &= 0x1ffff;
vga.memory[(offset+svga.bank_w*0x20000)] = data;
vga.memory[(offset+svga.bank_w*0x20000) % vga.svga_intf.vram_size] = data;
}
else
{
offset &= 0xffff;
vga.memory[(offset+svga.bank_w*0x10000)] = data;
vga.memory[(offset+svga.bank_w*0x10000) % vga.svga_intf.vram_size] = data;
}
}
else

4
src/emu/video/pc_vga.h
View File

@ -340,6 +340,8 @@ public:
protected:
virtual void device_start();
virtual void device_config_complete();
vga_device* m_vga; // for pass-through
astring m_vga_tag; // pass-through device tag
private:
void ibm8514_draw_vector(UINT8 len, UINT8 dir, bool draw);
void ibm8514_wait_draw_ssv();
@ -349,8 +351,6 @@ private:
void ibm8514_write_bg(UINT32 offset);
void ibm8514_write(UINT32 offset, UINT32 src);
vga_device* m_vga; // for pass-through
astring m_vga_tag; // pass-through device tag
//UINT8* m_vram; // the original 8514/A has it's own VRAM, but most VGA+8514 combination cards will have
// only one set of VRAM, so this will only be needed in standalone 8514/A cards
//UINT32 m_vramsize;