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More fixes to the RTG series:

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1. Make the RTG VGA series work on XT's.
2. The RTG3105 is limited to up to 512K of memory, not 1M.
3. Fixed rowoffset in 8bpp mode used by the RTG3105.
This commit is contained in:
TC1995
2024-01-16 19:03:54 +01:00
parent e25fadc138
commit 56631fac30
1 changed files with 35 additions and 6 deletions
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41
src/video/vid_rtg310x.c
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@@ -209,6 +209,8 @@ rtg_out(uint16_t addr, uint8_t val, void *priv)
static void
rtg_recalctimings(svga_t *svga)
{
const rtg_t *dev = (rtg_t *) svga->priv;
svga->ma_latch |= ((svga->crtc[0x19] & 0x10) << 16) | ((svga->crtc[0x19] & 0x40) << 17);
svga->interlace = (svga->crtc[0x19] & 1);
@@ -280,7 +282,7 @@ rtg_recalctimings(svga_t *svga)
if (svga->crtc[0x19] & 2) {
if (svga->hdisp == 1280)
svga->hdisp >>= 1;
else
else if (dev->type == 2)
svga->rowoffset <<= 1;
svga->render = svga_render_8bpp_highres;
@@ -382,7 +384,34 @@ rtg3106_available(void)
return rom_present(RTG_3106_BIOS_ROM_PATH);
}
static const device_config_t rtg_config[] = {
static const device_config_t rtg3105_config[] = {
// clang-format off
{
.name = "memory",
.description = "Memory size",
.type = CONFIG_SELECTION,
.default_int = 512,
.selection = {
{
.description = "256 KB",
.value = 256
},
{
.description = "512 KB",
.value = 512
},
{
.description = ""
}
}
},
{
.type = CONFIG_END
}
// clang-format on
};
static const device_config_t rtg3106_config[] = {
// clang-format off
{
.name = "memory",
@@ -416,7 +445,7 @@ static const device_config_t rtg_config[] = {
const device_t realtek_rtg3105_device = {
.name = "Realtek RTG3105 (ISA)",
.internal_name = "rtg3105",
.flags = DEVICE_ISA | DEVICE_AT,
.flags = DEVICE_ISA,
.local = 1,
.init = rtg_init,
.close = rtg_close,
@@ -424,13 +453,13 @@ const device_t realtek_rtg3105_device = {
{ .available = rtg3105_available },
.speed_changed = rtg_speed_changed,
.force_redraw = rtg_force_redraw,
.config = rtg_config
.config = rtg3105_config
};
const device_t realtek_rtg3106_device = {
.name = "Realtek RTG3106 (ISA)",
.internal_name = "rtg3106",
.flags = DEVICE_ISA | DEVICE_AT,
.flags = DEVICE_ISA,
.local = 2,
.init = rtg_init,
.close = rtg_close,
@@ -438,5 +467,5 @@ const device_t realtek_rtg3106_device = {
{ .available = rtg3106_available },
.speed_changed = rtg_speed_changed,
.force_redraw = rtg_force_redraw,
.config = rtg_config
.config = rtg3106_config
};