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8514/A compatible changes of the day (March 6th, 2025)

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1. Follow the Mach32 manual more closely regarding vblank support.
2. The subsystem status now takes account of the other bits more accurately.
3. The Mach32 PCI, when used with the ATI 68860 ramdac, has its own bpp's when in accelerator mode, separate from the VGA compatible side, so fix this accordingly.
4. Reset the vram when a mapping change occurs, should clear the messups in the ATI Mach8/32 accel video mode tests.
This commit is contained in:
TC1995
2025-03-06 16:03:11 +01:00
parent 5be8823193
commit 5c78fa5203
4 changed files with 115 additions and 64 deletions
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88
src/video/vid_ati_mach8.c
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@@ -438,6 +438,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.dx <= clip_r) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b)) {
dev->subsys_stat |= 0x02;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
src_dat = dev->accel.bkgd_color;
@@ -661,6 +662,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.dx <= clip_r) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b)) {
dev->subsys_stat |= 0x02;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
src_dat = dev->accel.bkgd_color;
@@ -1067,6 +1069,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.dx <= clip_r) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b)) {
dev->subsys_stat |= 0x02;
if (mach->accel.dp_config & 0x02) {
READ(dev->accel.src + dev->accel.cx, poly_src);
poly_src = ((poly_src & rd_mask) == rd_mask);
@@ -1308,6 +1311,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.cx <= clip_r) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b)) {
dev->subsys_stat |= 0x02;
mach->accel.clip_overrun = 0;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
@@ -1441,6 +1445,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.cx <= clip_r) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b)) {
dev->subsys_stat |= 0x02;
mach->accel.clip_overrun = 0;
if (mach->accel.linedraw_opt & 0x02) {
if (dev->bpp) {
@@ -1599,6 +1604,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.cx <= clip_r) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b)) {
dev->subsys_stat |= 0x02;
mach->accel.clip_overrun = 0;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
@@ -1733,6 +1739,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.cx <= clip_r) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b)) {
dev->subsys_stat |= 0x02;
mach->accel.clip_overrun = 0;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
@@ -2028,6 +2035,7 @@ mach_accel_start(int cmd_type, int cpu_input, int count, uint32_t mix_dat, uint3
(dev->accel.dx <= clip_r) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b)) {
dev->subsys_stat |= 0x02;
switch (mix ? frgd_sel : bkgd_sel) {
case 0:
src_dat = dev->accel.bkgd_color;
@@ -2333,6 +2341,7 @@ mach_out(uint16_t addr, uint8_t val, void *priv)
case 0x2ed:
rs2 = !!(mach->accel.ext_ge_config & 0x1000);
rs3 = !!(mach->accel.ext_ge_config & 0x2000);
mach_log("8514/A RS2=%d, RS3=%d, addr=%03x.\n", rs2, rs3, addr);
if ((dev->local & 0xff) >= 0x02) {
if (mach->regs[0xb0] & 0x20) { /*ATI extended 8514/A mode.*/
mach_log("Extended 8514/A mode.\n");
@@ -2341,10 +2350,14 @@ mach_out(uint16_t addr, uint8_t val, void *priv)
svga_recalctimings(svga);
mach32_updatemapping(mach, svga);
}
if (mach->pci_bus && !mach->ramdac_type)
ati68860_ramdac_out((addr & 0x03) | (rs2 << 2) | (rs3 << 3), val, svga->ramdac, svga);
else
ati68875_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
if (dev->on)
svga_out(addr, val, svga);
else {
if (mach->pci_bus && !mach->ramdac_type)
ati68860_ramdac_out((addr & 0x03) | (rs2 << 2) | (rs3 << 3), val, svga->ramdac, svga);
else
ati68875_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
}
} else
svga_out(addr, val, svga);
return;
@@ -2355,6 +2368,7 @@ mach_out(uint16_t addr, uint8_t val, void *priv)
case 0x3C9:
rs2 = !!(mach->regs[0xa0] & 0x20);
rs3 = !!(mach->regs[0xa0] & 0x40);
mach_log("VGA RS2=%d, RS3=%d, addr=%03x.\n", rs2, rs3, addr);
if ((dev->local & 0xff) >= 0x02) {
if (svga->attrregs[0x10] & 0x40) {
mach_log("VGA mode.\n");
@@ -2363,10 +2377,14 @@ mach_out(uint16_t addr, uint8_t val, void *priv)
svga_recalctimings(svga);
mach32_updatemapping(mach, svga);
}
if (mach->pci_bus && !mach->ramdac_type)
ati68860_ramdac_out((addr & 0x03) | (rs2 << 2) | (rs3 << 3), val, svga->ramdac, svga);
else
ati68875_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
if (dev->on)
svga_out(addr, val, svga);
else {
if (mach->pci_bus && !mach->ramdac_type)
ati68860_ramdac_out((addr & 0x03) | (rs2 << 2) | (rs3 << 3), val, svga->ramdac, svga);
else
ati68875_ramdac_out(addr, rs2, rs3, val, svga->ramdac, svga);
}
} else
svga_out(addr, val, svga);
return;
@@ -2481,10 +2499,14 @@ mach_in(uint16_t addr, void *priv)
rs2 = !!(mach->accel.ext_ge_config & 0x1000);
rs3 = !!(mach->accel.ext_ge_config & 0x2000);
if ((dev->local & 0xff) >= 0x02) {
if (mach->pci_bus && !mach->ramdac_type)
temp = ati68860_ramdac_in((addr & 3) | (rs2 << 2) | (rs3 << 3), svga->ramdac, svga);
else
temp = ati68875_ramdac_in(addr, rs2, rs3, svga->ramdac, svga);
if (dev->on)
temp = svga_in(addr, svga);
else {
if (mach->pci_bus && !mach->ramdac_type)
temp = ati68860_ramdac_in((addr & 3) | (rs2 << 2) | (rs3 << 3), svga->ramdac, svga);
else
temp = ati68875_ramdac_in(addr, rs2, rs3, svga->ramdac, svga);
}
} else
temp = svga_in(addr, svga);
break;
@@ -3407,7 +3429,7 @@ mach_accel_out_fifo(mach_t *mach, svga_t *svga, ibm8514_t *dev, uint16_t port, u
static void
mach_accel_out_call(uint16_t port, uint8_t val, mach_t *mach, svga_t *svga, ibm8514_t *dev)
{
if (port != 0x42e8 && port != 0x42e9)
if (port == 0x42e8 || port == 0x42e9)
mach_log("[%04X:%08X]: Port CALL OUT=%04x, val=%02x.\n", CS, cpu_state.pc, port, val);
switch (port) {
@@ -3422,7 +3444,7 @@ mach_accel_out_call(uint16_t port, uint8_t val, mach_t *mach, svga_t *svga, ibm8
break;
case 0x42e9:
ibm8514_accel_out(port, val, svga, 2);
if ((val & 0xc0) == 0xc0) {
if ((val & 0xc0) == 0x80) {
dev->ext_fifo_idx = 0;
mach->force_busy = 0;
}
@@ -3513,6 +3535,11 @@ mach_accel_out_call(uint16_t port, uint8_t val, mach_t *mach, svga_t *svga, ibm8
svga_recalctimings(svga);
break;
case 0x46e8:
case 0x46e9:
mach_log("0x%04x write: VGA subsystem enable add-on=%02x.\n", port, val);
break;
case 0x4ae8:
dev->accel.advfunc_cntl = val;
dev->on = dev->accel.advfunc_cntl & 0x01;
@@ -4201,6 +4228,7 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
switch (port) {
case 0x2e8:
case 0x2e9:
case 0x6e8:
case 0x22e8:
case 0x26e8:
@@ -4212,18 +4240,22 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
case 0x42e8:
case 0x42e9:
if (dev->vc == dev->v_syncstart)
if ((dev->subsys_cntl & 0x01) && !(dev->subsys_stat & 0x01) && (dev->vc == dev->dispend))
temp |= 0x01;
if (mach->accel.cmd_type == -1) {
if (cmd == 6) {
if ((dev->accel.dx >= clip_l) &&
if ((dev->subsys_cntl & 0x02) &&
!(dev->subsys_stat & 0x02) &&
(dev->accel.dx >= clip_l) &&
(dev->accel.dx <= clip_r_ibm) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b_ibm))
temp |= 0x02;
} else {
if ((dev->accel.cx >= clip_l) &&
if ((dev->subsys_cntl & 0x02) &&
!(dev->subsys_stat & 0x02) &&
(dev->accel.cx >= clip_l) &&
(dev->accel.cx <= clip_r_ibm) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b_ibm))
@@ -4234,7 +4266,9 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
case 1:
case 2:
case 5:
if ((dev->accel.dx >= clip_l) &&
if ((dev->subsys_cntl & 0x02) &&
!(dev->subsys_stat & 0x02) &&
(dev->accel.dx >= clip_l) &&
(dev->accel.dx <= clip_r) &&
(dev->accel.dy >= clip_t) &&
(dev->accel.dy <= clip_b))
@@ -4242,7 +4276,9 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
break;
case 3:
case 4:
if ((dev->accel.cx >= clip_l) &&
if ((dev->subsys_cntl & 0x02) &&
!(dev->subsys_stat & 0x02) &&
(dev->accel.cx >= clip_l) &&
(dev->accel.cx <= clip_r) &&
(dev->accel.cy >= clip_t) &&
(dev->accel.cy <= clip_b))
@@ -4257,16 +4293,17 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
if ((!dev->force_busy && !dev->force_busy2) || !mach->force_busy)
temp |= 0x08;
}
if (port & 1)
if (port & 1) {
temp = dev->vram_512k_8514 ? 0x00 : 0x80;
else {
temp |= (dev->subsys_cntl >> 8);
} else {
temp |= (dev->subsys_stat | (dev->vram_512k_8514 ? 0x00 : 0x80));
if (mach->accel.ext_ge_config & 0x08)
temp |= ((mach->accel.ext_ge_config & 0x07) << 4);
else
temp |= 0x20;
}
mach_log("0x%04x read: Subsystem Status=%02x.\n", port, temp);
mach_log("0x%04x read: Subsystem Status=%02x, monitoralias=%02x.\n", port, temp, mach->accel.ext_ge_config & 0x07);
break;
/*ATI Mach8/32 specific registers*/
@@ -4403,7 +4440,8 @@ mach_accel_in_call(uint16_t port, mach_t *mach, svga_t *svga, ibm8514_t *dev)
default:
break;
}
mach_log("[%04X:%08X]: Port NORMAL IN=%04x, temp=%04x.\n", CS, cpu_state.pc, port, temp);
if (port == 0x2ee8 || port == 0x2ee9 || port == 0x42e8 || port == 0x42e9)
mach_log("[%04X:%08X]: Port NORMAL IN=%04x, temp=%04x.\n", CS, cpu_state.pc, port, temp);
return temp;
}
@@ -5419,6 +5457,10 @@ mach32_updatemapping(mach_t *mach, svga_t *svga)
mem_mapping_set_handler(&svga->mapping, mach32_read, mach32_readw, mach32_readl, mach32_write, mach32_writew, mach32_writel);
mem_mapping_set_p(&svga->mapping, mach);
} else {
if (!dev->on) {
memset(dev->vram, 0, dev->vram_size);
memset(dev->changedvram, 0, (dev->vram_size >> 12) + 1);
}
mach_log("IBM compatible banked mapping.\n");
mem_mapping_set_handler(&svga->mapping, svga_read, svga_readw, svga_readl, svga_write, svga_writew, svga_writel);
mem_mapping_set_p(&svga->mapping, svga);