claunia/86Box
1
0
Fork 0
Code Issues Pull Requests Actions 3 Packages Projects Releases Wiki Activity

Assorted machines and JEGA/JVGA fixes.

Browse Source
This commit is contained in:
OBattler
2025-06-14 21:06:57 +02:00
parent 5e9d48ec1b
commit b394480a06
5 changed files with 37 additions and 15 deletions
Download Patch File Download Diff File Expand all files Collapse all files

30
src/video/vid_jega.c
View File

@@ -151,6 +151,8 @@ extern uint32_t pallook64[256];
static bool is_SJIS_1(uint8_t chr) { return (chr >= 0x81 && chr <= 0x9f) || (chr >= 0xe0 && chr <= 0xfc); }
static bool is_SJIS_2(uint8_t chr) { return (chr >= 0x40 && chr <= 0x7e) || (chr >= 0x80 && chr <= 0xfc); }
static uint8_t jega_in(uint16_t addr, void *priv);
static uint16_t
SJIS_to_SEQ(uint16_t sjis)
{
@@ -422,7 +424,10 @@ jega_out(uint16_t addr, uint8_t val, void *priv)
if (!jega->attrff) {
jega->attraddr = val & 31;
if ((val & 0x20) != jega->attr_palette_enable) {
jega->ega.fullchange = 3;
if (jega->is_vga)
jega->vga.svga.fullchange = 3;
else
jega->ega.fullchange = 3;
jega->attr_palette_enable = val & 0x20;
jega_recalctimings(jega);
}
@@ -449,6 +454,13 @@ jega_out(uint16_t addr, uint8_t val, void *priv)
}
jega->attrff ^= 1;
break;
case 0x3c2:
if (jega->regs[RMOD1] & 0x0c) {
io_removehandler(0x03a0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
if (!(val & 1))
io_sethandler(0x03a0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
}
break;
case 0x3b4:
case 0x3d4:
/* Index 0x00-0x1F (write only), 0xB8-0xDF (write and read) */
@@ -742,9 +754,19 @@ jega_commoninit(const device_t *info, void *priv, int vga)
jega->is_vga = vga;
if (vga) {
video_inform(VIDEO_FLAG_TYPE_SPECIAL, &timing_vga);
vga_init(info, &jega->vga, 1);
svga_init(info, &jega->vga.svga, &jega->vga, 1 << 18, /*256kb*/
NULL,
jega_in, jega_out,
NULL,
NULL);
jega->vga.svga.bpp = 8;
jega->vga.svga.miscout = 1;
jega->vga.svga.vga_enabled = 0;
jega->vga.svga.priv_parent = jega;
jega->pallook = jega->vga.svga.pallook;
io_sethandler(0x03c0, 0x0020, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
} else {
for (int c = 0; c < 256; c++) {
pallook64[c] = makecol32(((c >> 2) & 1) * 0xaa, ((c >> 1) & 1) * 0xaa, (c & 1) * 0xaa);
@@ -758,9 +780,11 @@ jega_commoninit(const device_t *info, void *priv, int vga)
mem_mapping_add(&jega->ega.mapping, 0xa0000, 0x20000,
ega_read, NULL, NULL, ega_write, NULL, NULL,
NULL, MEM_MAPPING_EXTERNAL, &jega->ega);
/* I/O 3DD and 3DE are used by Oki if386 */
io_sethandler(0x03c0, 0x001c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
}
/* I/O 3DD and 3DE are used by Oki if386 */
io_sethandler(0x03b0, 0x002c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
// io_sethandler(0x03b0, 0x002c, jega_in, NULL, NULL, jega_out, NULL, NULL, jega);
jega->regs[RMOD1] = 0x48;
}