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Anyone currently digging into custom FPGA firmware for DMA has likely considered emulating a standard storage controller to avoid those nasty hardware-based anti-cheat flags. I have been working on a setup emulating an ASMedia ASM1062 / ASM1166, but I am hitting a wall with initialization stability.
The Problem Overview
Currently, the device is detected and initializes correctly in Windows, but it is not stable after a cold boot. During stress or speed tests, the device simply hangs or the test fails.
Observation:
It is likely that some specific vendor-defined registers or link-state power management settings are not being handled correctly in the custom firmware stack. Emulating these SATA controllers is a lot cleaner than running a generic Squirrel signature, but without the full datasheet, you are essentially flying blind through the config space.
While others are getting hit by the latest hardware ban waves because they are still using public CFG spaces, getting this ASMedia emulation right is the best way to stay under the radar and keep your main account safe.
who else is emulating ahci controllers for their dma?
The Problem Overview
Currently, the device is detected and initializes correctly in Windows, but it is not stable after a cold boot. During stress or speed tests, the device simply hangs or the test fails.
Observation:
- Cold boot: Device initializes but fails under load (e.g., speed test).
- Workaround: Disabling the device in Device Manager and re-enabling it (or performing a hardware rescan) fixes the stability issue completely until the next restart.
- Conclusion: There is an inconsistency in the configuration space or internal register state during the initial BIOS/UEFI handoff that the OS driver resolves during a re-initialization sequence.
It is likely that some specific vendor-defined registers or link-state power management settings are not being handled correctly in the custom firmware stack. Emulating these SATA controllers is a lot cleaner than running a generic Squirrel signature, but without the full datasheet, you are essentially flying blind through the config space.
If anyone has the full datasheet for the ASM1062 or ASM1166 (not the public marketing brief, but the actual technical manual with register maps), it would be a huge help for the community. We need to see exactly how these chips handle cold vs warm resets to get the state machine 100% stable for DMA applications.
While others are getting hit by the latest hardware ban waves because they are still using public CFG spaces, getting this ASMedia emulation right is the best way to stay under the radar and keep your main account safe.
who else is emulating ahci controllers for their dma?
