Updated drivers for Windows XP SP3 and Windows 2003 SP2 (x32/x64) for modern hardware

**reboot12** · 2026-06-21T07:45:05Z

uartctrl.log

[21/06/2026, 09:13 AM] AddDevice: PDO=FFFFFADFD0B5E060
[21/06/2026, 09:13 AM] AddDevice: checking HWID 'ACPI\8086228A'
[21/06/2026, 09:13 AM] AddDevice: checking HWID '*8086228A'
[21/06/2026, 09:13 AM] AddDevice: no supported HWID matched

i2cctrl.log

[21/06/2026, 09:11 AM] DriverEntry begin
[21/06/2026, 09:11 AM] DriverEntry complete (mask=0x00000009)
[21/06/2026, 09:11 AM] AddDevice: begin
[21/06/2026, 09:11 AM] AddDevice: scanning HWIDs for controller match
[21/06/2026, 09:11 AM] AddDevice: HWID candidate: ACPI\808622C1
[21/06/2026, 09:11 AM] AddDevice: HWID candidate: *808622C1
[21/06/2026, 09:11 AM] AddDevice: unsupported controller, skipping
[21/06/2026, 09:21 AM] DriverEntry begin
[21/06/2026, 09:21 AM] DriverEntry complete (mask=0x00000009)
[21/06/2026, 09:21 AM] AddDevice: begin
[21/06/2026, 09:21 AM] AddDevice: scanning HWIDs for controller match
[21/06/2026, 09:21 AM] AddDevice: HWID candidate: ACPI\808622C1
[21/06/2026, 09:21 AM] AddDevice: HWID candidate: *808622C1
[21/06/2026, 09:21 AM] AddDevice: unsupported controller, skipping

Edited yesterday at 07:49 AM by reboot12

**UsefulAGKHelper** · 2026-06-21T08:08:24Z

24 minutes ago, reboot12 said:

uartctrl.log

[21/06/2026, 09:13 AM] AddDevice: PDO=FFFFFADFD0B5E060
[21/06/2026, 09:13 AM] AddDevice: checking HWID 'ACPI\8086228A'
[21/06/2026, 09:13 AM] AddDevice: checking HWID '*8086228A'
[21/06/2026, 09:13 AM] AddDevice: no supported HWID matched

i2cctrl.log

[21/06/2026, 09:11 AM] DriverEntry begin
[21/06/2026, 09:11 AM] DriverEntry complete (mask=0x00000009)
[21/06/2026, 09:11 AM] AddDevice: begin
[21/06/2026, 09:11 AM] AddDevice: scanning HWIDs for controller match
[21/06/2026, 09:11 AM] AddDevice: HWID candidate: ACPI\808622C1
[21/06/2026, 09:11 AM] AddDevice: HWID candidate: *808622C1
[21/06/2026, 09:11 AM] AddDevice: unsupported controller, skipping
[21/06/2026, 09:21 AM] DriverEntry begin
[21/06/2026, 09:21 AM] DriverEntry complete (mask=0x00000009)
[21/06/2026, 09:21 AM] AddDevice: begin
[21/06/2026, 09:21 AM] AddDevice: scanning HWIDs for controller match
[21/06/2026, 09:21 AM] AddDevice: HWID candidate: ACPI\808622C1
[21/06/2026, 09:21 AM] AddDevice: HWID candidate: *808622C1
[21/06/2026, 09:21 AM] AddDevice: unsupported controller, skipping

//
// Table of supported controllers (explicit ACPI/PCI devices)
// Match against full HWID substrings only
//
const I2CCTRL_DEVICE_ID g_I2cControllers[] = {

    /* ACPI-based controllers (NO LPSS) */
    { L"ACPI\\INT3446",
      0x00,0x04,0x08,0x0C,   /* BAR0 DW-I2C */
      0,0,0,0,               /* LPSS BAR2 */
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\INT3447",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_FORCE_PIO },

    { L"ACPI\\AMD0010",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\AMDI0010",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },


    /* PCI-based Intel Serial IO controllers WITH LPSS BAR2 */
    { L"PCI\\VEN_8086&DEV_9DC5",
      0x00,0x04,0x08,0x0C,       /* BAR0 DW-I2C */
      0x200,0x204,0x208,0x20C,   /* LPSS BAR2 */
      QUIRK_NEEDS_RESET_WORKAROUND, BSOD_EXTRA_RESET },

    { L"PCI\\VEN_8086&DEV_9DE8",
      0x10,0x14,0x18,0x1C,
      0x200,0x204,0x208,0x20C,
      QUIRK_BROKEN_CLOCK_GATE, BSOD_MASK_INTERRUPTS },

    { L"PCI\\VEN_8086&DEV_9DE9",
      0x20,0x24,0x28,0x2C,
      0x200,0x204,0x208,0x20C,
      QUIRK_NO_DMA_SUPPORT, BSOD_FORCE_PIO },

    { L"PCI\\VEN_8086&DEV_9DEA",
      0x00,0x04,0x08,0x0C,
      0x200,0x204,0x208,0x20C,
      QUIRK_SLOW_CLOCK, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_9DEB",
      0x00,0x04,0x08,0x0C,
      0x200,0x204,0x208,0x20C,
      QUIRK_NO_D1D2, BSOD_NONE },


    /* Legacy PCI controllers requiring ACPI 1.0b fallback (NO LPSS) */
    { L"PCI\\VEN_8086&DEV_A160",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI10, BSOD_DELAY_INIT },

    { L"PCI\\VEN_8086&DEV_A161",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI10, BSOD_DELAY_INIT },

    { L"PCI\\VEN_8086&DEV_A162",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI10, BSOD_DELAY_INIT },

    { L"PCI\\VEN_8086&DEV_A163",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI10, BSOD_DELAY_INIT },


    /* Other Intel PCI controllers (NO LPSS unless proven otherwise) */
    { L"PCI\\VEN_8086&DEV_A2E0",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A2E1",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A2E2",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A2E3",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },


    { L"PCI\\VEN_8086&DEV_31AC",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31AE",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31B0",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31B2",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31B4",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31B6",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31B8",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_31BA",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },


    { L"PCI\\VEN_8086&DEV_A368",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A369",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A36A",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_A36B",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },


    { L"PCI\\VEN_8086&DEV_02E8",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_02E9",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_02EA",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_02EB",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_02C5",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_02C6",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },


    { L"PCI\\VEN_8086&DEV_06E8",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_06E9",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_06EA",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE },

    { L"PCI\\VEN_8086&DEV_06EB",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_NONE, BSOD_NONE }
};

const ULONG g_I2cControllersCount =
    sizeof(g_I2cControllers) / sizeof(g_I2cControllers[0]);

This is the list of supported controllers in i2cctrl.c.

Edited yesterday at 08:13 AM by UsefulAGKHelper

**UsefulAGKHelper** · 2026-06-21T08:16:29Z

Implementing:

    /* Intel Serial IO I2C ES (Atom/Cherry Trail/Braswell) */
    { L"ACPI\\808622C1",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C2",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C3",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C4",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C5",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C6",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C7",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

    { L"ACPI\\808622C8",
      0x00,0x04,0x08,0x0C,
      0,0,0,0,
      QUIRK_ACPI20, BSOD_NONE },

**UsefulAGKHelper** · 2026-06-21T08:20:17Z

@reboot12 https://github.com/UsefulVideos/I2C-Controller-XP/releases/tag/build-20260621-111658
Try this compiled version. The change is only applied in i2cctrl.sys.

Remember that the backend is still hardware specific... Will be configured later.

Edited yesterday at 08:23 AM by UsefulAGKHelper

**reboot12** · 2026-06-21T09:50:11Z

@UsefulAGKHelper

Your latest i2cctrl driver install OK but after about some seconds BSOD 50 appears:

**UsefulAGKHelper** · 2026-06-21T10:28:34Z

40 minutes ago, reboot12 said:

@UsefulAGKHelper

Your latest i2cctrl driver install OK but after about some seconds BSOD 50 appears:

This is what Copilot said about your BSOD:

That blue screen you’re seeing — PAGE_FAULT_IN_NONPAGED_AREA (STOP 0x00000050) — means a kernel‑mode driver or system component tried to access invalid memory. In your context, since you’re testing your I²C controller driver, this BSOD almost certainly originates from a bad pointer or MMIO access inside your backend (for example, dereferencing devctx->MmioBase before mapping or writing to an invalid offset).

Here’s how to narrow it down:

🧩 Likely causes

Invalid MMIO base — MmioBase not yet mapped when IntelReadReg or IntelWriteReg runs.

Null devctx — a failed allocation or uninitialized FDO context.

Incorrect BAR offset — writing to a register that doesn’t exist on the ES controller (e.g., LPSS‑only offsets).

Accessing pageable memory at IRQL ≥ DISPATCH_LEVEL — common if ISR/DPC touches nonpaged data incorrectly.

Removing the code will get you directly back to error 31. The backend is still hardware specific...

Edited yesterday at 10:31 AM by UsefulAGKHelper

**reboot12** · 2026-06-21T10:41:43Z

@UsefulAGKHelper

I'm sorry, but I have to wrote your attention:

do not quote the entire post, select only important lines using e.g. ... ...
do not quote entire logs or other things, e.g. what AI wrote - select important lines from them
test your drivers before posting public
if you need to post the entire log, use sites designed for this purpose, e.g. pastebin.com

Edited yesterday at 10:43 AM by reboot12

**UsefulAGKHelper** · 2026-06-21T10:43:18Z

@reboot12 Enable kernel memory dump from XP's registry (offline). Boot with i2cctrl set from manual to disabled, enable and disable from device manager again after service is enabled through serviwin/etc. Now on BSOD you should have a prompt for MEMORY.DMP.

**UsefulAGKHelper** · 2026-06-21T10:44:28Z

3 minutes ago, reboot12 said:

@UsefulAGKHelper

test your drivers before posting public

With what hardware? I only have ASUS x509FA. I can't afford another device with I2C.

Edited yesterday at 10:45 AM by UsefulAGKHelper

**reboot12** · 2026-06-21T10:50:28Z

Just now, UsefulAGKHelper said:

With what hardware? I only have ASUS x509FA.

Sorry, but if you publish a driver, e.g. on github, you should first test it on at least several computers.

I'm not interested in your Asus x509FA laptop. I would like to use I2C drivers on other computers.

**UsefulAGKHelper** · 2026-06-21T11:19:44Z

28 minutes ago, reboot12 said:

Sorry, but if you publish a driver, e.g. on github, you should first test it on at least several computers.

I'm not interested in your Asus x509FA laptop. I would like to use I2C drivers on other computers.

Atleast give me the info of the models that you have.

**UsefulAGKHelper** · 2026-06-21T18:38:20Z

8 hours ago, reboot12 said:

https://github.com/UsefulVideos/I2C-Controller-XP/releases/tag/build-20260621-213701

Try this newer build and tell me if it BSODs this time.

Edited yesterday at 06:41 PM by UsefulAGKHelper

**UsefulAGKHelper** · 2026-06-21T20:41:30Z

@reboot12 Next better build:
https://github.com/UsefulVideos/I2C-Controller-XP/releases/tag/build-20260621-234018

That 0x50 BSOD should be gone this time.

Edited yesterday at 08:53 PM by UsefulAGKHelper

**reboot12** · 2026-06-22T05:54:16Z

@UsefulAGKHelper

Yes, now there is no BSOD 50 anymore, but your drivers probably don't do the job because I still can't install the sound driver:

**UsefulAGKHelper** · 2026-06-22T05:59:20Z

8 minutes ago, reboot12 said:

@UsefulAGKHelper

Yes, now there is no BSOD 50 anymore, but your drivers probably don't do the job because I still can't install the sound driver:

Hold on, what service does the Intel SST Audio Device driver even use, hardware ID? That's very important information.

I need your i2cctrl.log btw.

Edited 16 hours ago by UsefulAGKHelper

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