Test and fix 8080 and z80 cpu

vbmacher commented 2 years ago

There exist very nice set of tests which can test all flags and undocumented peculiarities of Z80:

https://softspectrum48.weebly.com/test-results.html

These tests are written for ZX Spectrum emulators, so interrupts and ROM jumps should be replaced with emuStudio code (e.g. printing character, etc).

vbmacher commented 2 years ago

https://spectrumcomputing.co.uk/forums/viewtopic.php?p=94582

vbmacher commented 2 years ago

https://github.com/hoglet67/Z80Decoder/wiki/Undocumented-Flags

vbmacher commented 2 years ago

https://gist.github.com/drhelius/8497817

vbmacher commented 2 years ago

https://floooh.github.io/visualz80remix/

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vbmacher commented 2 years ago

https://skoolkid.github.io/rom/maps/all.html

vbmacher commented 1 year ago

What's left:

test input/output instructions (OT*R), try to run other tests too.
scf / ccf undocumented
memptr test
memory contention (probably do not need to implement here, it is used in zx spectrum)

What works

patrik rak's z80 test (full)
zexall test

vbmacher commented 1 year ago

What works:

z80-tests full now passes all instructions
Q and memptr registers implemented
IN*R, OT*R, IN*, OUT* fixed

What's left:

Run some more tests
Fix unit tests, ideally incorporating some ROMs maybe

vbmacher commented 1 year ago

Implemented crc16-based instruction testing

emustudio / emuStudio

Test and fix 8080 and z80 cpu #260