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29 lines
1.3 KiB
Plaintext
29 lines
1.3 KiB
Plaintext
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Welcome to the Zilog Z80 CPU test suite.
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This set of programs is intended to help the emulator authors to reach the
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desired level of the CPU emulation authenticity. Each of the included programs
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performs an exhaustive computation using each of the tested Z80 instructions,
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compares the results with values obtained from a real 48K Spectrum with Zilog Z80 CPU,
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and reports any deviations detected.
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The following variants are available:
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- z80full - tests all flags and registers.
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- z80doc - tests all registers, but only officially documented flags.
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- z80flags - tests all flags, ignores registers.
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- z80docflags - tests documented flags only, ignores registers.
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- z80ccf - tests all flags after executing CCF after each instruction tested.
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- z80memptr - tests all flags after executing BIT N,(HL) after each instruction tested.
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The first four are the standard tests for CPU emulation. The CCF variant is
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used to thoroughly test the authentic SCF/CCF behavior after each Z80
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instruction. Finally the MEMPTR variant can be used to discover problems in
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the MEMPTR emulation - however note that the current set of test was not
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specifically designed to stress test MEMPTR, so many of the possible
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problems are very likely left undetected. I may eventually add specific
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MEMPTR tests in later releases.
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Enjoy!
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Patrik Rak
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