claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Implemented software-requested DMA block transfers, fixes #405, and also fixes UMBPCI's DMACHK ISA DMA tests;

Browse Source 
Reworked a few things and re-implemented memory write protection in the SCAT emulation, to require less unusual mappings;
Removed two files that should not be there;
Made sure all graphics cards' memory mappings are mapped as MEM_MAPPING_EXTERNAL;
Added MEM_MAPPING_ROMCS flag to signal that a mapping responds to MEMCS* and made the BIOS and Intel flash mappings use it.
This commit is contained in:
OBattler
2019-09-28 17:32:05 +02:00
parent b1f91ff54a
commit 6627282efb
13 changed files with 147 additions and 1943 deletions
Download Patch File Download Diff File Expand all files Collapse all files

23
src/mem_new.c
View File

@@ -821,6 +821,23 @@ writememql(uint32_t addr, uint64_t val)
}
int
mem_mapping_is_romcs(uint32_t addr, int write)
{
mem_mapping_t *map;
if (write)
map = write_mapping[addr >> MEM_GRANULARITY_BITS];
else
map = read_mapping[addr >> MEM_GRANULARITY_BITS];
if (map)
return !!(map->flags & MEM_MAPPING_ROMCS);
else
return 0;
}
uint8_t
mem_readb_phys(uint32_t addr)
{
@@ -1415,12 +1432,12 @@ mem_add_bios(void)
mem_mapping_add(&bios_mapping, 0xe0000, 0x20000,
mem_read_bios,mem_read_biosw,mem_read_biosl,
mem_write_null,mem_write_nullw,mem_write_nulll,
&rom[0x20000], MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM, 0);
&rom[0x20000], MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM|MEM_MAPPING_ROMCS, 0);
} else {
mem_mapping_add(&bios_mapping, biosaddr, biosmask + 1,
mem_read_bios,mem_read_biosw,mem_read_biosl,
mem_write_null,mem_write_nullw,mem_write_nulll,
rom, MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM, 0);
rom, MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM|MEM_MAPPING_ROMCS, 0);
}
if (AT) {
@@ -1428,7 +1445,7 @@ mem_add_bios(void)
mem_read_bios,mem_read_biosw,mem_read_biosl,
mem_write_null,mem_write_nullw,mem_write_nulll,
rom,
MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM, 0);
MEM_MAPPING_EXTERNAL|MEM_MAPPING_ROM|MEM_MAPPING_ROMCS, 0);
}
}