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Last minute changes for the high color S3 911/924 mode

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Read mask initialized to 0xff allows proper colors on initial boot of Windows.
This commit is contained in:
TC1995
2025-09-09 00:18:14 +02:00
parent 8bb6444c7a
commit 3a703d0c0d
1 changed files with 5 additions and 0 deletions
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5
src/video/vid_s3.c
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@@ -830,6 +830,7 @@ s3_accel_out_fifo(s3_t *s3, uint16_t port, uint8_t val)
{
svga_t *svga = &s3->svga;
s3_log("OUTB FIFO=%04x, val=%02x.\n", port, val);
switch (port) {
case 0x8148:
case 0x82e8:
@@ -8807,6 +8808,7 @@ s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, voi
if ((s3->bpp == 0) && s3->color_16bit) {
s3->accel.rd_mask_16bit_check = ((rd_mask & 0xff00) != 0xff00) && rd_mask;
s3_log("CMD2: RDMASK16CHECK=%d, rdmask=%04x.\n", s3->accel.rd_mask_16bit_check, rd_mask);
if (s3->accel.rd_mask_16bit_check) {
if (s3->accel.cmd == 0x41b3) {
if (frgd_mix == 0) {
@@ -9211,6 +9213,7 @@ s3_accel_start(int count, int cpu_input, uint32_t mix_dat, uint32_t cpu_dat, voi
if ((s3->bpp == 0) && s3->color_16bit) {
s3->accel.rd_mask_16bit_check = ((rd_mask & 0xff00) != 0xff00) && rd_mask;
s3_log("CMD6: RDMASK16CHECK=%d.\n", s3->accel.rd_mask_16bit_check);
if (s3->accel.rd_mask_16bit_check) {
if (!(clip_r & 0x400))
s3->accel.start = 1;
@@ -10778,6 +10781,7 @@ s3_init(const device_t *info)
s3->id_ext = stepping;
s3->id_ext_pci = 0;
s3->packed_mmio = 0;
s3->accel.rd_mask = 0xff;
svga->ramdac = device_add(&sc11483_ramdac_device);
s3->ramdac_type = SC1148X;
@@ -10799,6 +10803,7 @@ s3_init(const device_t *info)
s3->id_ext = stepping;
s3->id_ext_pci = 0;
s3->packed_mmio = 0;
s3->accel.rd_mask = 0xff;
svga->ramdac = device_add(&sc11483_ramdac_device);
s3->ramdac_type = SC1148X;