2022-11-21 17:04:07 -06:00
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# Fork of github.com/stevecheckoway/libzel
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2017-08-12 15:32:26 -05:00
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# z80 Emulation Library
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I wrote this z80 emulator library in 2008 after being dissatisfied with other
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emulators for one reason or another. It aims to be cycle-accurate by modeling
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the number of T-cycles per instruction. See the [Z80 CPU User
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Manual](https://www.zilog.com/docs/z80/um0080.pdf) for details about T-cycles.
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## Operation
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Libzel is very low level. It operates one instruction at a time, calling
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callbacks to read memory, perform I/O, and handle interrupts. No assumptions
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are made about memory layout or peripheral organization.
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None of the standard Zilog peripherals are implemented and they must be
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handled by the callbacks.
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## Paper
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Libzel was used to emulate the Sequoia AVC Advantage voting machine as
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described in Checkoway et al.'s [_Can DREs Provide Long-Lasting Security? The
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Case of Return-Oriented Programming and the AVC
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Advantage_](https://www.cs.uic.edu/~s/papers/evt2009/).
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