2026-08-25 - the two emulators are opposites, and §1 stopped being presence-only

The blind prober had only ever run against shadPS4. Six rounds against PS5PCEM reached the end of the list, and the result inverts:

	shadPS4	PS5PCEM
answered	32,275	3,709
zero	96.4%	7.8%
rejected	125	2,986 (80.5%)

One resolves everything and accepts everything; the other resolves a ninth as many and refuses four out of five. COMPATIBILITY.md has argued precisely this in prose since it was written - "a loader that resolves only what it implements scores nothing on presence while being the most honest of the group". Now with numbers under it. (D167)

§1 no longer says "nothing here is called." 108 AGC symbols answered on PS5PCEM and 21 refused with real errnos - EFAULT ten times, EINVAL nine, EBADF twice. First evidence this project has that anything is behind an AGC name anywhere. Under shadPS4 all 118 returned zero, which measured a PS4 emulator stubbing a PS5 interface.

Still not exercising the interface: calling with nothing can only find out whether a function objects to nothing. Driving a command buffer needs §2's struct layouts, which have not moved.

Twelve functions hand the guest an address inside the emulator

sceAgcGetRegisterDefaults2 returned 0x7ff6d0961b80; eleven others across libSceFontFt, libSceJson, libSceJson2 and libkernel answered in the same 0x7ff6… family. Windows x64 user space, inside the PS5PCEM binary. All twelve are functions whose contract is to return a pointer.

Recorded as an observation rather than a defect - an HLE emulator with one address space can legitimately hand back a host pointer. What it is not is a platform fact, and twelve pointer-valued functions all answering inside the host image is a clean fingerprint of HLE-in-process rather than noise.

One thing worth saying before someone misreads the round count. Six rounds versus thirty-one is not the better loader. A round ends at the first function that does not return, and an unresolved symbol is never called, so it cannot fault. Fewer implementations means fewer crashes means fewer rounds - a property of coverage, not quality.