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Major video changes and fixes of the day (September 7th, 2025)

Browse Source 
1. Rewritten Sierra SC1502x RAMDAC code to match the manual, allowing proper BPP selection on cards which use it.
2. Added a reference clock variable for cards which have a different default one (ELSA cards namely) on the ICD2061 code.
3. Reorganized RAMDAC selection in the S3 code.
4. Added more ELSA Winner cards based on the 928 chip (ELSA Winner 2000 ISA, 1000 VLB and 1000 PCI based on 928PCI).
5. The horizontal override is now also enabled for ELSA Winner 1000 (928 VLB and PCI) cards with 32bpp set, to avoid wrong horizontal displays.
6. LFB in PCI mode doesn't have the same limitations as on VLB or ISA.
7. Added more hdisp adjustments for the Elsa cards.
8. Mono patterns are now more correct in ROPBLT acceleration (command 14), fixes blackness in some instances of Win95 (matching the 968 manual).
9. Minor cleanup on the accel registers.
This commit is contained in:
TC1995
2025-09-07 01:01:03 +02:00
parent daef24de13
commit a6becc3158
6 changed files with 757 additions and 192 deletions
Download Patch File Download Diff File Expand all files Collapse all files

4
src/include/86box/vid_svga.h
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@@ -449,6 +449,7 @@ extern void ibm_rgb528_ramdac_set_ref_clock(void *priv, svga_t *svga, float r
extern void icd2061_write(void *priv, int val);
extern float icd2061_getclock(int clock, void *priv);
extern void icd2061_set_ref_clock(void *priv, svga_t *svga, float ref_clock);
/* The code is the same, the #define's are so that the correct name can be used. */
# define ics9161_write icd2061_write
@@ -465,6 +466,8 @@ extern uint8_t sc1148x_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svg
extern void sc1502x_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga);
extern uint8_t sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga);
extern void sc1502x_rs2_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
extern uint8_t sc1502x_rs2_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
extern void sdac_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga);
extern uint8_t sdac_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga);
@@ -516,6 +519,7 @@ extern const device_t sc11487_ramdac_device;
extern const device_t sc11486_ramdac_device;
extern const device_t sc11484_nors2_ramdac_device;
extern const device_t sc1502x_ramdac_device;
extern const device_t sc1502x_rs2_ramdac_device;
extern const device_t sdac_ramdac_device;
extern const device_t stg_ramdac_device;
extern const device_t tkd8001_ramdac_device;

11
src/include/86box/video.h
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@@ -412,7 +412,7 @@ extern const device_t cga_pravetz_device;
/* Compaq CGA */
extern const device_t compaq_cga_device;
extern const device_t compaq_cga_2_device;
extern const device_t compaq_plasma_device;
extern const device_t compaq_plasma_device;
/* Olivetti OGC */
extern const device_t ogc_device;
@@ -513,8 +513,11 @@ extern const device_t realtek_rtg3106_device;
extern const device_t s3_orchid_86c911_isa_device;
extern const device_t s3_diamond_stealth_vram_isa_device;
extern const device_t s3_ami_86c924_isa_device;
extern const device_t s3_elsa_winner1000_86c928_vlb_device;
extern const device_t s3_elsa_winner2000_86c928_isa_device;
extern const device_t s3_metheus_86c928_isa_device;
extern const device_t s3_metheus_86c928_vlb_device;
extern const device_t s3_elsa_winner1000_86c928_pci_device;
extern const device_t s3_spea_mercury_lite_86c928_pci_device;
extern const device_t s3_spea_mirage_86c801_isa_device;
extern const device_t s3_winner1000_805_isa_device;
@@ -635,9 +638,9 @@ extern const device_t wy700_device;
extern const device_t v6355d_device;
/* Tandy */
extern const device_t tandy_1000_video_device;
extern const device_t tandy_1000hx_video_device;
extern const device_t tandy_1000sl_video_device;
extern const device_t tandy_1000_video_device;
extern const device_t tandy_1000hx_video_device;
extern const device_t tandy_1000sl_video_device;
#endif

21
src/video/clockgen/vid_clockgen_icd2061.c
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@@ -29,10 +29,15 @@
#define HAVE_STDARG_H
#include <86box/86box.h>
#include <86box/device.h>
#include <86box/mem.h>
#include <86box/timer.h>
#include <86box/video.h>
#include <86box/vid_svga.h>
#include <86box/plat_unused.h>
typedef struct icd2061_t {
float freq[3];
float freq[3];
float ref_clock;
int count;
int bit_count;
@@ -121,7 +126,7 @@ icd2061_write(void *priv, int val)
q = qa + 2; /* Q (ICD2061) / M (ICS9161) */
ps = (icd2061->ctrl & (1 << a)) ? 4 : 2; /* Prescale */
icd2061->freq[a] = ((float) (p_ * ps) / (float) (q * m)) * 14318184.0f;
icd2061->freq[a] = ((float) (p_ * ps) / (float) (q * m)) * icd2061->ref_clock;
icd2061_log("P = %02X, M = %01X, Q = %02X, freq[%i] = %f\n", p_, m, q, a, icd2061->freq[a]);
} else if (a == 6) {
@@ -149,12 +154,24 @@ icd2061_getclock(int clock, void *priv)
return icd2061->freq[clock];
}
void
icd2061_set_ref_clock(void *priv, svga_t *svga, float ref_clock)
{
icd2061_t *icd2061 = (icd2061_t *) priv;
if (icd2061)
icd2061->ref_clock = ref_clock;
svga_recalctimings(svga);
}
static void *
icd2061_init(UNUSED(const device_t *info))
{
icd2061_t *icd2061 = (icd2061_t *) malloc(sizeof(icd2061_t));
memset(icd2061, 0, sizeof(icd2061_t));
icd2061->ref_clock = 14318184.0f;
icd2061->freq[0] = 25175000.0;
icd2061->freq[1] = 28322000.0;
icd2061->freq[2] = 28322000.0;

261
src/video/ramdac/vid_ramdac_sc1502x.c
View File

@@ -33,65 +33,32 @@
typedef struct sc1502x_ramdac_t {
int state;
int use_rs2;
uint8_t ctrl;
uint8_t idx;
uint8_t regs[256];
uint32_t pixel_mask;
uint8_t enable_ext;
} sc1502x_ramdac_t;
static void
sc1502x_ramdac_bpp(uint8_t val, sc1502x_ramdac_t *ramdac, svga_t *svga)
sc1502x_ramdac_bpp(sc1502x_ramdac_t *ramdac, svga_t *svga)
{
int oldbpp = 0;
if (val == 0xff)
return;
ramdac->ctrl = val;
oldbpp = svga->bpp;
switch ((val & 1) | ((val & 0xc0) >> 5)) {
case 0:
svga->bpp = 8;
break;
case 2:
case 3:
switch (val & 0x20) {
case 0x00:
svga->bpp = 32;
break;
case 0x20:
svga->bpp = 24;
break;
default:
break;
}
break;
case 4:
case 5:
svga->bpp = 15;
break;
case 6:
int oldbpp = svga->bpp;
if (ramdac->ctrl & 0x80) {
if (ramdac->ctrl & 0x40) {
svga->bpp = 16;
break;
case 7:
if (val & 4) {
switch (val & 0x20) {
case 0x00:
svga->bpp = 32;
break;
case 0x20:
svga->bpp = 24;
break;
default:
break;
}
} else
svga->bpp = 16;
break;
default:
break;
} else
svga->bpp = 15;
} else {
if (ramdac->ctrl & 0x40) {
if (ramdac->regs[0x10] & 0x01)
svga->bpp = 32;
else if (ramdac->ctrl & 0x20)
svga->bpp = 24;
else
svga->bpp = 32;
} else
svga->bpp = 8;
}
if (oldbpp != svga->bpp)
svga_recalctimings(svga);
@@ -104,29 +71,30 @@ sc1502x_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga)
switch (addr) {
case 0x3C6:
if (ramdac->state == 0)
ramdac->enable_ext = (val == 0x10);
if (ramdac->state == 4) {
if ((ramdac->state == 4) || (ramdac->ctrl & 0x10)) {
ramdac->state = 0;
sc1502x_ramdac_bpp(val, ramdac, svga);
ramdac->ctrl = val;
if (val != 0xff)
sc1502x_ramdac_bpp(ramdac, svga);
return;
}
ramdac->state = 0;
svga_out(addr, val, svga);
break;
case 0x3C7:
if (ramdac->enable_ext) {
if (ramdac->ctrl & 0x10)
ramdac->idx = val;
return;
}
else
svga_out(addr, val, svga);
ramdac->state = 0;
break;
case 0x3C8:
if (ramdac->enable_ext) {
if (ramdac->ctrl & 0x10) {
switch (ramdac->idx) {
case 8:
ramdac->regs[ramdac->idx] = val;
svga_set_ramdac_type(svga, (ramdac->regs[ramdac->idx] & 1) ? RAMDAC_8BIT : RAMDAC_6BIT);
ramdac->regs[8] = val;
svga->ramdac_type = (val & 0x01) ? RAMDAC_8BIT : RAMDAC_6BIT;
break;
case 0x0d:
ramdac->pixel_mask = val & svga->dac_mask;
@@ -137,24 +105,96 @@ sc1502x_ramdac_out(uint16_t addr, uint8_t val, void *priv, svga_t *svga)
case 0x0f:
ramdac->pixel_mask |= ((val & svga->dac_mask) << 16);
break;
case 0x10:
ramdac->regs[0x10] = val;
sc1502x_ramdac_bpp(ramdac, svga);
break;
default:
ramdac->regs[ramdac->idx] = val;
break;
}
return;
}
} else
svga_out(addr, val, svga);
ramdac->state = 0;
break;
case 0x3C9:
if (ramdac->enable_ext)
return;
ramdac->state = 0;
svga_out(addr, val, svga);
break;
default:
break;
}
svga_out(addr, val, svga);
}
void
sc1502x_rs2_ramdac_out(uint16_t addr, int rs2, uint8_t val, void *priv, svga_t *svga)
{
sc1502x_ramdac_t *ramdac = (sc1502x_ramdac_t *) priv;
uint8_t rs = (addr & 0x03);
rs |= ((!!rs2) << 2);
switch (rs) {
case 0x00:
if (ramdac->ctrl & 0x10) {
switch (ramdac->idx) {
case 8:
ramdac->regs[8] = val;
svga->ramdac_type = (val & 0x01) ? RAMDAC_8BIT : RAMDAC_6BIT;
break;
case 0x0d:
ramdac->pixel_mask = val & svga->dac_mask;
break;
case 0x0e:
ramdac->pixel_mask |= ((val & svga->dac_mask) << 8);
break;
case 0x0f:
ramdac->pixel_mask |= ((val & svga->dac_mask) << 16);
break;
case 0x10:
ramdac->regs[0x10] = val;
sc1502x_ramdac_bpp(ramdac, svga);
break;
default:
ramdac->regs[ramdac->idx] = val;
break;
}
} else
svga_out(addr, val, svga);
break;
case 0x01:
svga_out(addr, val, svga);
break;
case 0x02:
if (ramdac->ctrl & 0x10) {
ramdac->ctrl = val;
if (val != 0xff)
sc1502x_ramdac_bpp(ramdac, svga);
} else
svga_out(addr, val, svga);
break;
case 0x03:
if (ramdac->ctrl & 0x10)
ramdac->idx = val;
else
svga_out(addr, val, svga);
break;
case 0x04:
case 0x05:
case 0x07:
svga_out(addr, val, svga);
break;
case 0x06:
ramdac->ctrl = val;
if (val != 0xff)
sc1502x_ramdac_bpp(ramdac, svga);
break;
default:
svga_out(addr, val, svga);
break;
}
}
uint8_t
@@ -166,8 +206,7 @@ sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga)
switch (addr) {
case 0x3C6:
if (ramdac->state == 4) {
ramdac->state = 0;
temp = ramdac->ctrl;
temp = ramdac->ctrl;
break;
}
ramdac->state++;
@@ -176,7 +215,7 @@ sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga)
ramdac->state = 0;
break;
case 0x3C8:
if (ramdac->enable_ext) {
if (ramdac->ctrl & 0x10) {
switch (ramdac->idx) {
case 9:
temp = 0x53;
@@ -203,14 +242,72 @@ sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga)
temp = ramdac->regs[ramdac->idx];
break;
}
} else
ramdac->state = 0;
}
ramdac->state = 0;
break;
case 0x3C9:
if (ramdac->enable_ext)
if (ramdac->ctrl & 0x10)
temp = ramdac->idx;
else
ramdac->state = 0;
ramdac->state = 0;
break;
default:
break;
}
return temp;
}
uint8_t
sc1502x_rs2_ramdac_in(uint16_t addr, int rs2, void *priv, svga_t *svga)
{
sc1502x_ramdac_t *ramdac = (sc1502x_ramdac_t *) priv;
uint8_t rs = (addr & 0x03);
uint8_t temp = svga_in(addr, svga);
rs |= ((!!rs2) << 2);
switch (rs) {
case 0x00:
if (ramdac->ctrl & 0x10) {
switch (ramdac->idx) {
case 9:
temp = 0x53;
break;
case 0x0a:
temp = 0x3a;
break;
case 0x0b:
temp = 0xb1;
break;
case 0x0c:
temp = 0x41;
break;
case 0x0d:
temp = ramdac->pixel_mask & 0xff;
break;
case 0x0e:
temp = ramdac->pixel_mask >> 8;
break;
case 0x0f:
temp = ramdac->pixel_mask >> 16;
break;
default:
temp = ramdac->regs[ramdac->idx];
break;
}
}
break;
case 0x01:
if (ramdac->ctrl & 0x10)
temp = ramdac->idx;
break;
case 0x02:
if (ramdac->ctrl & 0x10)
temp = ramdac->ctrl;
break;
case 0x06:
temp = ramdac->ctrl;
break;
default:
@@ -221,7 +318,7 @@ sc1502x_ramdac_in(uint16_t addr, void *priv, svga_t *svga)
}
static void *
sc1502x_ramdac_init(UNUSED(const device_t *info))
sc1502x_ramdac_init(const device_t *info)
{
sc1502x_ramdac_t *ramdac = (sc1502x_ramdac_t *) malloc(sizeof(sc1502x_ramdac_t));
memset(ramdac, 0, sizeof(sc1502x_ramdac_t));
@@ -254,3 +351,17 @@ const device_t sc1502x_ramdac_device = {
.force_redraw = NULL,
.config = NULL
};
const device_t sc1502x_rs2_ramdac_device = {
.name = "Sierra SC1502x RAMDAC with RS2",
.internal_name = "sc1502x_rs2_ramdac",
.flags = 0,
.local = 1,
.init = sc1502x_ramdac_init,
.close = sc1502x_ramdac_close,
.reset = NULL,
.available = NULL,
.speed_changed = NULL,
.force_redraw = NULL,
.config = NULL
};

647
src/video/vid_s3.c
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File diff suppressed because it is too large Load Diff

5
src/video/vid_table.c
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@@ -91,7 +91,6 @@ video_cards[] = {
{ .device = &nga_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &nec_sv9000_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &ogc_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &jvga_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &oti037c_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &oti067_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &oti077_device, .flags = VIDEO_FLAG_TYPE_NONE },
@@ -127,10 +126,12 @@ video_cards[] = {
{ .device = &gd5434_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &gd5434_diamond_speedstar_64_a3_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &inmos_isa_device, .flags = VIDEO_FLAG_TYPE_XGA },
{ .device = &jvga_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &radius_svga_multiview_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_diamond_stealth_vram_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_orchid_86c911_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_ami_86c924_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_elsa_winner2000_86c928_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_metheus_86c928_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_phoenix_86c801_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_spea_mirage_86c801_isa_device, .flags = VIDEO_FLAG_TYPE_NONE },
@@ -160,6 +161,7 @@ video_cards[] = {
{ .device = &gd5430_diamond_speedstar_pro_se_a8_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &gd5430_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &gd5434_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_elsa_winner1000_86c928_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_metheus_86c928_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_mirocrystal_8s_805_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_mirocrystal_10sd_805_vlb_device, .flags = VIDEO_FLAG_TYPE_NONE },
@@ -199,6 +201,7 @@ video_cards[] = {
{ .device = &et4000w32p_cardex_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &et4000w32p_noncardex_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &et4000w32p_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_elsa_winner1000_86c928_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_spea_mercury_lite_86c928_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_diamond_stealth64_964_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },
{ .device = &s3_elsa_winner2000_pro_x_964_pci_device, .flags = VIDEO_FLAG_TYPE_NONE },