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i82439hx.cpp: corrections to pci configuration space map and decoding to debug log of pam register writes

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This commit is contained in:
yz70s 2021-07-28 20:51:17 +02:00
parent 246343d18f
commit 628dc0d363
2 changed files with 86 additions and 2 deletions
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78
src/devices/machine/i82439hx.cpp
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@ -8,7 +8,11 @@ DEFINE_DEVICE_TYPE(I82439HX, i82439hx_host_device, "i82439hx", "Intel 82439HX no
void i82439hx_host_device::config_map(address_map &map)
{
pci_host_device::config_map(map);
map(0x06, 0x07).rw(FUNC(i82439hx_host_device::status_r), FUNC(i82439hx_host_device::status_w));
map(0x0d, 0x0d).rw(FUNC(i82439hx_host_device::latency_timer_r), FUNC(i82439hx_host_device::latency_timer_w));
map(0x0f, 0x0f).rw(FUNC(i82439hx_host_device::bist_r), FUNC(i82439hx_host_device::bist_w));
map(0x10, 0x4f).noprw();
map(0x4f, 0x4f).rw(FUNC(i82439hx_host_device::acon_r), FUNC(i82439hx_host_device::acon_w));
map(0x50, 0x50).rw(FUNC(i82439hx_host_device::pcon_r), FUNC(i82439hx_host_device::pcon_w));
map(0x52, 0x52).rw(FUNC(i82439hx_host_device::cc_r), FUNC(i82439hx_host_device::cc_w));
map(0x56, 0x56).rw(FUNC(i82439hx_host_device::dramec_r), FUNC(i82439hx_host_device::dramec_w));
@ -48,7 +52,7 @@ void i82439hx_host_device::device_start()
io_window_end = 0xffff;
io_offset = 0;
command = 0x0006;
command_mask = 0x0106;
command_mask = 0x0102;
status = 0x0200;
ram.resize(ram_size/4);
@ -63,6 +67,9 @@ void i82439hx_host_device::device_reset()
{
pci_host_device::device_reset();
latency_timer = 0x00;
bist = 0x00;
acon = 0x00;
pcon = 0x00;
cc = 0xa2;
dramec = 0x00;
@ -168,6 +175,45 @@ uint8_t i82439hx_host_device::header_type_r()
return 0x00; // from datasheet
}
void i82439hx_host_device::status_w(offs_t offset, uint16_t data, uint16_t mem_mask)
{
// bits 12-14 are clear on write
status = status & ~(data & (0x7000 & mem_mask));
}
uint8_t i82439hx_host_device::latency_timer_r()
{
return latency_timer;
}
void i82439hx_host_device::latency_timer_w(uint8_t data)
{
latency_timer = data;
logerror("latency_timer = %02x\n", latency_timer);
}
uint8_t i82439hx_host_device::bist_r()
{
return bist;
}
void i82439hx_host_device::bist_w(uint8_t data)
{
bist = data;
logerror("bist = %02x\n", bist);
}
uint8_t i82439hx_host_device::acon_r()
{
return acon;
}
void i82439hx_host_device::acon_w(uint8_t data)
{
acon = data;
logerror("acon = %02x\n", acon);
}
uint8_t i82439hx_host_device::pcon_r()
{
return pcon;
@ -233,6 +279,36 @@ void i82439hx_host_device::pam_w(offs_t offset, uint8_t data)
{
pam[offset - 1] = data;
logerror("pam[%d] = %02x\n", offset - 1, pam[offset - 1]);
switch (offset - 1)
{
case 0:
logerror(" F0000-FFFFF BIOS Area RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 1:
logerror(" C0000-C3FFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" C4000-C7FFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 2:
logerror(" C8000-CBFFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" CC000-CFFFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 3:
logerror(" D0000-D3FFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" D4000-D7FFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 4:
logerror(" D8000-DBFFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" DC000-DFFFF Add-On BIOS RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 5:
logerror(" E0000-E3FFF BIOS Extension RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" E4000-E7FFF BIOS Extension RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
case 6:
logerror(" E8000-EBFFF BIOS Extension RE:%d WE:%d CE:%d R:%d\n", (data >> 0) & 1, (data >> 1) & 1, (data >> 2) & 1, (data >> 3) & 1);
logerror(" EC000-EFFFF BIOS Extension RE:%d WE:%d CE:%d R:%d\n", (data >> 4) & 1, (data >> 5) & 1, (data >> 6) & 1, (data >> 7) & 1);
break;
}
remap_cb();
}

10
src/devices/machine/i82439hx.h
View File

@ -42,12 +42,20 @@ private:
required_device<device_memory_interface> cpu;
std::vector<uint32_t> ram;
uint8_t pcon, cc, dramec, dramc, dramt;
uint8_t latency_timer, bist;
uint8_t acon, pcon, cc, dramec, dramc, dramt;
uint8_t pam[7], drb[8];
uint8_t drt, drat, smram, errcmd, errsts, errsyn;
int smiact_n;
virtual uint8_t header_type_r() override;
void status_w(offs_t offset, uint16_t data, uint16_t mem_mask);
virtual uint8_t latency_timer_r() override;
void latency_timer_w(uint8_t data);
virtual uint8_t bist_r() override;
void bist_w(uint8_t data);
uint8_t acon_r();
void acon_w(uint8_t data);
uint8_t pcon_r();
void pcon_w(uint8_t data);
uint8_t cc_r();