Issues

• 6502A and 6502B

  SingleStepTests/65x02#21 · Filter by author jcollie opened on Sep 4, 2026

• Incorrect behaviour of $cb and $db instructions on non-WDC CMOS chips

  SingleStepTests/65x02#20 · Filter by author BulbulatorMacher opened on Feb 15, 2026

• Incorrect memory access for CMOS NOPs $dc and $fc

  SingleStepTests/65x02#19 · Filter by author BulbulatorMacher opened on Feb 15, 2026

• WDC 65C02 cycle count seems incorrect for opcode $5C

  SingleStepTests/65x02#12 · Filter by author sidneycadot opened on Dec 15, 2024
  1

• Traceability of the test results

  SingleStepTests/65x02#11 · Filter by author sidneycadot opened on Nov 30, 2024

• The 6502 tests assume the P register has bits 4 & 5.

  SingleStepTests/65x02#8 · Filter by author TomHarte opened on Jul 27, 2024

• WDC 65C02 STZ issue

  SingleStepTests/65x02#7 · Filter by author TomHarte opened on Jul 27, 2024

• nes6502: LXA ($AB) Constant Adjustment

  SingleStepTests/65x02#2 · Filter by author L-Spiro opened on Jun 9, 2024