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MSDOS compatibility mode FPU exception support

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@793 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2004-05-08 21:03:41 +00:00
parent e309de25a6
commit f929aad6e3
1 changed files with 14 additions and 0 deletions
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14
hw/pc.c
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@ -45,6 +45,18 @@ static void ioport80_write(void *opaque, uint32_t addr, uint32_t data)
{ {
} }
/* MSDOS compatibility mode FPU exception support */
/* XXX: add IGNNE support */
void cpu_set_ferr(CPUX86State *s)
{
pic_set_irq(13, 1);
}
static void ioportF0_write(void *opaque, uint32_t addr, uint32_t data)
{
pic_set_irq(13, 0);
}
/* PC cmos mappings */ /* PC cmos mappings */
#define REG_EQUIPMENT_BYTE 0x14 #define REG_EQUIPMENT_BYTE 0x14
@ -371,6 +383,8 @@ void pc_init(int ram_size, int vga_ram_size, int boot_device,
/* init basic PC hardware */ /* init basic PC hardware */
register_ioport_write(0x80, 1, 1, ioport80_write, NULL); register_ioport_write(0x80, 1, 1, ioport80_write, NULL);
register_ioport_write(0xf0, 1, 1, ioportF0_write, NULL);
vga_initialize(ds, phys_ram_base + ram_size, ram_size, vga_initialize(ds, phys_ram_base + ram_size, ram_size,
vga_ram_size); vga_ram_size);