I've been mining inside PCem.exe (v17) and looking to the README. So far, there are some bugs and other findings.
Bugs
- IBM PC: ibmpc/basicc11.f6, ibmpc/basicc11.f8, ibmpc/basicc11.fa and ibmpc/basicc11.fc are mentioned in the documentation. They are not mentioned in PCem.exe, so I guess it won't load them.
- Euro PC: europc/50146 (same as above).
- IBM AT: ibmat/at111585.0 and ibmat/at111585.1 should be ibmat/62x0820.u27 and ibmat/62x0821.u47
- IBM PS/1 Model 2011: ibmps1/f80000.bin is placed in the wrong place, it should be ibmps1es/f80000.bin
- IBM PS/2 Model 70 (type 4): ibmps2_m70_type3/70-a_even.bin and ibmps2_m70_type3/70-a_odd.bin should be ibmps2_m70_type3/70-b_even.bin and ibmps2_m70_type3/70-b_odd.bin
- Trident TGUI9400CXi: 9440.vbi should be 9400CXI.vbi
- MDA: It says that the ROM is unnecessary, but PCem.exe try to load mda.rom (and mda.rom is included with PCem).
- Wyse WY-700: Same as above, except that the file is wy700.rom and it is not included with PCem.