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The BIOS file doesn't just contain what you'd expect from a normal PC BIOS, but also contains several tables used by the emulator for decoding of x86 instructio
by wzdd 3y ago
The BIOS file doesn't just contain what you'd expect from a normal PC BIOS, but also contains several tables used by the emulator for decoding of x86 instructions. Normally those tables would be in code as they're necessary regardless of BIOS implementation; they're presumably in the BIOS to save space.
- rep_lodsb 3y agoMaybe one way to look at it other than "cheating" is that it's simulating a fictional x86-like processor which uses an external ROM for microcode.