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Added ATI Korean VGA, based on PCem patch from greatpsycho.

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This commit is contained in:
OBattler
2018-03-02 18:33:22 +01:00
parent 3351d311cd
commit 22e1b2f83a
7 changed files with 270 additions and 23 deletions
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159
src/video/vid_ati28800.c
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@@ -8,7 +8,7 @@
*
* ATI 28800 emulation (VGA Charger)
*
* Version: @(#)vid_ati28800.c 1.0.7 2018/02/18
* Version: @(#)vid_ati28800.c 1.0.8 2018/03/02
*
* Authors: Sarah Walker, <http://pcem-emulator.co.uk/>
* Miran Grca, <mgrca8@gmail.com>
@@ -36,6 +36,8 @@
#include "vid_svga_render.h"
#define BIOS_ATIKOR_PATH L"roms/video/ati28800/atikorvga.bin"
#define BIOS_VGAXL_EVEN_PATH L"roms/video/ati28800/xleven.bin"
#define BIOS_VGAXL_ODD_PATH L"roms/video/ati28800/xlodd.bin"
@@ -59,6 +61,16 @@ typedef struct ati28800_t
} ati28800_t;
uint8_t port_03dd_val;
uint16_t get_korean_font_kind;
int in_get_korean_font_kind_set;
int get_korean_font_enabled;
int get_korean_font_index;
uint16_t get_korean_font_base;
extern int dbcs_mode_enabled;
static void ati28800_out(uint16_t addr, uint8_t val, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
@@ -118,6 +130,60 @@ static void ati28800_out(uint16_t addr, uint8_t val, void *p)
svga_out(addr, val, svga);
}
void ati28800k_out(uint16_t addr, uint8_t val, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_t *svga = &ati28800->svga;
uint16_t oldaddr = addr;
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1))
addr ^= 0x60;
switch (addr)
{
case 0x1CF:
if(ati28800->index == 0xBF && ((ati28800->regs[0xBF] ^ val) & 0x20))
{
dbcs_mode_enabled = val & 0x20;
svga_recalctimings(svga);
}
ati28800_out(oldaddr, val, p);
break;
case 0x3DD:
port_03dd_val = val;
if(val == 1) get_korean_font_enabled = 0;
if(in_get_korean_font_kind_set)
{
get_korean_font_kind = (val << 8) | (get_korean_font_kind & 0xFF);
get_korean_font_enabled = 1;
get_korean_font_index = 0;
}
break;
case 0x3DE:
in_get_korean_font_kind_set = 0;
switch(port_03dd_val)
{
case 0x10:
get_korean_font_base = ((val & 0x7F) << 7) | (get_korean_font_base & 0x7F);
break;
case 8:
get_korean_font_base = (get_korean_font_base & 0x3F80) | (val & 0x7F);
break;
case 1:
get_korean_font_kind = (get_korean_font_kind & 0xFF00) | val;
if(val & 2) in_get_korean_font_kind_set = 1;
break;
default:
break;
}
break;
default:
ati28800_out(oldaddr, val, p);
break;
}
}
static uint8_t ati28800_in(uint16_t addr, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
@@ -168,6 +234,44 @@ static uint8_t ati28800_in(uint16_t addr, void *p)
return temp;
}
uint8_t ati28800k_in(uint16_t addr, void *p)
{
ati28800_t *ati28800 = (ati28800_t *)p;
svga_t *svga = &ati28800->svga;
uint16_t oldaddr = addr;
uint8_t temp = 0xFF;
// if (addr != 0x3da) pclog("ati28800_in : %04X ", addr);
if (((addr&0xFFF0) == 0x3D0 || (addr&0xFFF0) == 0x3B0) && !(svga->miscout&1)) addr ^= 0x60;
switch (addr)
{
case 0x3DE:
if(get_korean_font_enabled && (ati28800->regs[0xBF] & 0x20))
{
switch(get_korean_font_kind >> 8)
{
case 4: /* ROM font */
temp = fontdatksc5601[get_korean_font_base][get_korean_font_index++];
break;
case 2: /* User defined font - TODO : Should be implemented later */
temp = 0;
break;
default:
break;
}
get_korean_font_index &= 0x1F;
}
break;
default:
temp = ati28800_in(oldaddr, p);
break;
}
if (addr != 0x3da) pclog("%02X %04X:%04X\n", temp, CS,cpu_state.pc);
return temp;
}
static void ati28800_recalctimings(svga_t *svga)
{
ati28800_t *ati28800 = (ati28800_t *)svga->p;
@@ -181,6 +285,39 @@ static void ati28800_recalctimings(svga_t *svga)
}
}
void *
ati28800k_init(device_t *info)
{
ati28800_t *ati28800 = malloc(sizeof(ati28800_t));
memset(ati28800, 0, sizeof(ati28800_t));
port_03dd_val = 0;
get_korean_font_base = 0;
get_korean_font_index = 0;
get_korean_font_enabled = 0;
get_korean_font_kind = 0;
in_get_korean_font_kind_set = 0;
dbcs_mode_enabled = 0;
rom_init(&ati28800->bios_rom, BIOS_ATIKOR_PATH, 0xc0000, 0x8000, 0x7fff, 0, MEM_MAPPING_EXTERNAL);
svga_init(&ati28800->svga, ati28800, 1 << 19, /*512kb*/
ati28800_recalctimings,
ati28800k_in, ati28800k_out,
NULL,
NULL);
io_sethandler(0x01ce, 0x0002, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
io_sethandler(0x03c0, 0x0020, ati28800k_in, NULL, NULL, ati28800k_out, NULL, NULL, ati28800);
ati28800->svga.miscout = 1;
ati_eeprom_load(&ati28800->eeprom, L"atikorvga.nvr", 0);
return ati28800;
}
static void *
ati28800_init(device_t *info)
{
@@ -250,6 +387,13 @@ ati28800_available(void)
}
static int
ati28800k_available()
{
return ((rom_present(BIOS_ATIKOR_PATH) && rom_present(FONT_ATIKOR_PATH)));
}
static int
compaq_ati28800_available(void)
{
@@ -362,6 +506,19 @@ device_t ati28800_device =
ati28800_config
};
device_t ati28800k_device =
{
"ATI Korean VGA",
DEVICE_ISA,
0,
ati28800k_init, ati28800_close, NULL,
ati28800k_available,
ati28800_speed_changed,
ati28800_force_redraw,
ati28800_add_status_info,
ati28800_config
};
device_t compaq_ati28800_device =
{
"Compaq ATI-28800",