• fixed regression in v5.86: exceptions in PL0 were displayed incorrectly.
• fixed: NMIs that occured while no full stack frame was setup caused
  a crash.
• segment registers DS/ES/FS/GS and [CS:IP] now also displayed for PL0
  exceptions.
• NMIs are now masked while NMI exceptions are handled.
• fixed: Simulate_Int() cleared bits 16-31 of register ESP.
• JemmEx fix: if option XMSHANDLES was > 59 and Jemm wasn't allowed to move
  its resident part into the upper memory region, it crashed.
• Linux.mak: GNU makefile added to create Jemm binaries on Linux.
• fixed JemmEx: unknown A20METHOD value caused a crash.
• AHCICD: driver now supports long reads in "raw mode".
• Int 15h, ah=87h: returns error 02 instead of 80h if limit out of range.
• debug version, int 41h: routes AX=0 ( display chr ) to debug display.