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Changed the way PS/2 Model 80 split mapping is handled (but OS/2 2.x still runs on it);

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The pages array are no longer allocated for the entire memory of space if memory size + 384 is above 16 MB (turns out it was not needed at all), further significantly reduces the emulator's RAM usage;
Made greatpsycho's revised SVGA status handling specific to ATI cards, while the generic (S)VGA code uses the old handling - fixes error 2401 on PS/2 Model 80.
This commit is contained in:
OBattler
2018-03-16 00:08:43 +01:00
parent 1f11f9f9a1
commit 78515537ef
7 changed files with 167 additions and 113 deletions
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63
src/machine/m_ps2_mca.c
View File

@@ -40,8 +40,9 @@ static struct
uint8_t io_id;
mem_mapping_t shadow_mapping;
mem_mapping_t split_mapping;
mem_mapping_t expansion_mapping;
mem_mapping_t cache_mapping;
mem_mapping_t cache_mapping;
uint8_t (*planar_read)(uint16_t port);
void (*planar_write)(uint16_t port, uint8_t val);
@@ -49,11 +50,12 @@ static struct
uint8_t mem_regs[3];
uint32_t split_addr, split_size;
uint32_t split_phys;
uint8_t mem_pos_regs[8];
uint8_t mem_2mb_pos_regs[8];
int pending_cache_miss;
int pending_cache_miss;
} ps2;
/*The model 70 type 3/4 BIOS performs cache testing. Since 86Box doesn't have any
@@ -173,6 +175,37 @@ static void ps2_write_shadow_raml(uint32_t addr, uint32_t val, void *priv)
mem_write_raml(addr, val, priv);
}
static uint8_t ps2_read_split_ram(uint32_t addr, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
return mem_read_ram(addr, priv);
}
static uint16_t ps2_read_split_ramw(uint32_t addr, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
return mem_read_ramw(addr, priv);
}
static uint32_t ps2_read_split_raml(uint32_t addr, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
return mem_read_raml(addr, priv);
}
static void ps2_write_split_ram(uint32_t addr, uint8_t val, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
mem_write_ram(addr, val, priv);
}
static void ps2_write_split_ramw(uint32_t addr, uint16_t val, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
mem_write_ramw(addr, val, priv);
}
static void ps2_write_split_raml(uint32_t addr, uint32_t val, void *priv)
{
addr = (addr % (ps2.split_size << 10)) + ps2.split_phys;
mem_write_raml(addr, val, priv);
}
#define PS2_SETUP_IO 0x80
#define PS2_SETUP_VGA 0x20
@@ -839,7 +872,7 @@ static void ps2_mca_board_model_55sx_init()
static void mem_encoding_update()
{
mem_split_disable(ps2.split_size, ps2.split_addr);
mem_mapping_disable(&ps2.split_mapping);
ps2.split_addr = ((uint32_t) (ps2.mem_regs[0] & 0xf)) << 20;
@@ -861,12 +894,16 @@ static void mem_encoding_update()
if (!(ps2.mem_regs[1] & 8))
{
if (ps2.mem_regs[1] & 4)
if (ps2.mem_regs[1] & 4) {
ps2.split_size = 384;
else
ps2.split_phys = 0x80000;
} else {
ps2.split_size = 256;
ps2.split_phys = 0xa0000;
}
mem_split_enable(ps2.split_size, ps2.split_addr);
mem_mapping_set_exec(&ps2.split_mapping, &ram[ps2.split_phys]);
mem_mapping_set_addr(&ps2.split_mapping, ps2.split_addr, ps2.split_size << 10);
/* pclog("PS/2 Model 80-111: Split memory block enabled at %08X\n", ps2.split_addr); */
} /* else {
@@ -1108,6 +1145,20 @@ static void ps2_mca_board_model_80_type2_init(int is486)
ps2.mem_regs[0] |= ((mem_size/1024) & 0x0f);
mem_mapping_add(&ps2.split_mapping,
(mem_size+256) * 1024,
256*1024,
ps2_read_split_ram,
ps2_read_split_ramw,
ps2_read_split_raml,
ps2_write_split_ram,
ps2_write_split_ramw,
ps2_write_split_raml,
&ram[0xa0000],
MEM_MAPPING_INTERNAL,
NULL);
mem_mapping_disable(&ps2.split_mapping);
if ((mem_size > 4096) && !is486)
{
/* Only 4 MB supported on planar, create a memory expansion card for the rest */

75
src/mem.c
View File

@@ -1334,13 +1334,16 @@ void mem_resize_pages(void)
if (AT) {
if (cpu_16bitbus)
total_size = 4096;
else
total_size = 1048576;
else {
total_size = (mem_size + 384) >> 2;
if ((total_size << 2) < (mem_size + 384))
total_size++;
if (total_size < 4096)
total_size = 4096;
}
} else
total_size = 256;
pclog("%i pages\n", total_size);
pages = malloc(total_size * sizeof(page_t));
memset(pages, 0, total_size * sizeof(page_t));
@@ -1469,70 +1472,6 @@ void mem_remap_top_384k()
mem_remap_top(384);
}
void mem_split_enable(int max_size, uint32_t addr)
{
int c;
uint8_t *mem_split_buffer = &ram[0x80000];
if (split_mapping_enabled)
return;
#if 0
pclog("Split mapping enable at %08X\n", addr);
#endif
mem_set_mem_state(addr, max_size * 1024, MEM_READ_INTERNAL | MEM_WRITE_INTERNAL);
mem_mapping_set_addr(&ram_split_mapping, addr, max_size * 1024);
mem_mapping_set_exec(&ram_split_mapping, &ram[addr]);
if (max_size == 384)
memcpy(&ram[addr], mem_split_buffer, max_size);
else
memcpy(&ram[addr], &mem_split_buffer[128 * 1024], max_size);
for (c = ((addr / 1024) / 64); c < (((addr / 1024) + max_size - 1) / 64); c++)
{
isram[c] = 1;
}
flushmmucache();
split_mapping_enabled = 1;
}
void mem_split_disable(int max_size, uint32_t addr)
{
int c;
uint8_t *mem_split_buffer = &ram[0x80000];
if (!split_mapping_enabled)
return;
#if 0
pclog("Split mapping disable at %08X\n", addr);
#endif
if (max_size == 384)
memcpy(mem_split_buffer, &ram[addr], max_size);
else
memcpy(&mem_split_buffer[128 * 1024], &ram[addr], max_size);
mem_mapping_disable(&ram_split_mapping);
mem_set_mem_state(addr, max_size * 1024, 0);
mem_mapping_set_exec(&ram_split_mapping, NULL);
for (c = ((addr / 1024) / 64); c < (((addr / 1024) + max_size - 1) / 64); c++)
{
isram[c] = 0;
}
flushmmucache();
split_mapping_enabled = 0;
}
void mem_resize()
{
int c;

3
src/mem.h
View File

@@ -231,9 +231,6 @@ extern void flushmmucache_cr3(void);
extern void flushmmucache_nopc(void);
extern void mmu_invalidate(uint32_t addr);
extern void mem_split_enable(int max_size, uint32_t addr);
extern void mem_split_disable(int max_size, uint32_t addr);
extern void mem_add_bios(void);

35
src/video/vid_ati18800.c
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@@ -8,7 +8,7 @@
*
* ATI 18800 emulation (VGA Edge-16)
*
* Version: @(#)vid_ati18800.c 1.0.6 2018/03/15
* Version: @(#)vid_ati18800.c 1.0.7 2018/03/16
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -150,6 +150,39 @@ static uint8_t ati18800_in(uint16_t addr, void *p)
case 0x3D5:
temp = svga->crtc[svga->crtcreg];
break;
case 0x3DA:
svga->attrff = 0;
svga->attrff = 0;
svga->cgastat &= ~0x30;
/* copy color diagnostic info from the overscan color register */
switch (svga->attrregs[0x12] & 0x30)
{
case 0x00: /* P0 and P2 */
if (svga->attrregs[0x11] & 0x01)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x04)
svga->cgastat |= 0x20;
break;
case 0x10: /* P4 and P5 */
if (svga->attrregs[0x11] & 0x10)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x20)
svga->cgastat |= 0x20;
break;
case 0x20: /* P1 and P3 */
if (svga->attrregs[0x11] & 0x02)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x08)
svga->cgastat |= 0x20;
break;
case 0x30: /* P6 and P7 */
if (svga->attrregs[0x11] & 0x40)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x80)
svga->cgastat |= 0x20;
break;
}
return svga->cgastat;
default:
temp = svga_in(addr, svga);
break;

35
src/video/vid_ati28800.c
View File

@@ -8,7 +8,7 @@
*
* ATI 28800 emulation (VGA Charger and Korean VGA)
*
* Version: @(#)vid_ati28800.c 1.0.11 2018/03/15
* Version: @(#)vid_ati28800.c 1.0.12 2018/03/16
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -246,6 +246,39 @@ static uint8_t ati28800_in(uint16_t addr, void *p)
case 0x3D5:
temp = svga->crtc[svga->crtcreg];
break;
case 0x3DA:
svga->attrff = 0;
svga->attrff = 0;
svga->cgastat &= ~0x30;
/* copy color diagnostic info from the overscan color register */
switch (svga->attrregs[0x12] & 0x30)
{
case 0x00: /* P0 and P2 */
if (svga->attrregs[0x11] & 0x01)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x04)
svga->cgastat |= 0x20;
break;
case 0x10: /* P4 and P5 */
if (svga->attrregs[0x11] & 0x10)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x20)
svga->cgastat |= 0x20;
break;
case 0x20: /* P1 and P3 */
if (svga->attrregs[0x11] & 0x02)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x08)
svga->cgastat |= 0x20;
break;
case 0x30: /* P6 and P7 */
if (svga->attrregs[0x11] & 0x40)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x80)
svga->cgastat |= 0x20;
break;
}
return svga->cgastat;
default:
temp = svga_in(addr, svga);
break;

35
src/video/vid_ati_mach64.c
View File

@@ -8,7 +8,7 @@
*
* ATi Mach64 graphics card emulation.
*
* Version: @(#)vid_ati_mach64.c 1.0.15 2018/03/13
* Version: @(#)vid_ati_mach64.c 1.0.16 2018/03/16
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -429,6 +429,39 @@ uint8_t mach64_in(uint16_t addr, void *p)
if (svga->crtcreg > 0x18)
return 0xff;
return svga->crtc[svga->crtcreg];
case 0x3DA:
svga->attrff = 0;
svga->attrff = 0;
svga->cgastat &= ~0x30;
/* copy color diagnostic info from the overscan color register */
switch (svga->attrregs[0x12] & 0x30)
{
case 0x00: /* P0 and P2 */
if (svga->attrregs[0x11] & 0x01)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x04)
svga->cgastat |= 0x20;
break;
case 0x10: /* P4 and P5 */
if (svga->attrregs[0x11] & 0x10)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x20)
svga->cgastat |= 0x20;
break;
case 0x20: /* P1 and P3 */
if (svga->attrregs[0x11] & 0x02)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x08)
svga->cgastat |= 0x20;
break;
case 0x30: /* P6 and P7 */
if (svga->attrregs[0x11] & 0x40)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x80)
svga->cgastat |= 0x20;
break;
}
return svga->cgastat;
}
return svga_in(addr, svga);
}

34
src/video/vid_svga.c
View File

@@ -11,7 +11,7 @@
* This is intended to be used by another SVGA driver,
* and not as a card in it's own right.
*
* Version: @(#)vid_svga.c 1.0.25 2018/03/12
* Version: @(#)vid_svga.c 1.0.26 2018/03/16
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -295,43 +295,11 @@ uint8_t svga_in(uint16_t addr, void *p)
svga->attrff = 0;
svga->attrff = 0;
/* old diagnostic code
if (svga->cgastat & 0x01)
svga->cgastat &= ~0x30;
else
svga->cgastat ^= 0x30;
return svga->cgastat;
*/
svga->cgastat &= ~0x30;
/* copy color diagnostic info from the overscan color register */
switch (svga->attrregs[0x12] & 0x30)
{
case 0x00: /* P0 and P2 */
if (svga->attrregs[0x11] & 0x01)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x04)
svga->cgastat |= 0x20;
break;
case 0x10: /* P4 and P5 */
if (svga->attrregs[0x11] & 0x10)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x20)
svga->cgastat |= 0x20;
break;
case 0x20: /* P1 and P3 */
if (svga->attrregs[0x11] & 0x02)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x08)
svga->cgastat |= 0x20;
break;
case 0x30: /* P6 and P7 */
if (svga->attrregs[0x11] & 0x40)
svga->cgastat |= 0x10;
if (svga->attrregs[0x11] & 0x80)
svga->cgastat |= 0x20;
break;
}
return svga->cgastat;
}
return 0xFF;
}