Collection of useful z80 ASM code for JavaCPC emulator/real CPC
Floppy disc tester: scans every track and sector of a 3" or 3.5" disc through the uPD765 FDC, draws a colour map of good/bad sectors and data types, with per-sector info, hex dump and statistics. Supports DATA, SYSTEM, IBM, ParaDOS, ROMDOS, +3 and custom formats, 40/80 tracks, 1/2 sides. Press C on the map for a circular mode 1 picture of the disc (track 0 = outer ring, sectors clockwise). See docs/DiscTester.md.
Build with ./build.sh (pasmo + python3) to get build/disctest.dsk,
then RUN"DISCTEST".