Talk:ISC

Decimal mode

Does this instruction honor the decimal mode (might be assumed because based on the SBC instruction)? --JohannKlasek (talk) 19:54, 18 January 2021 (CET)

SBC Decimal Mode is Honored

According to NMOS 6510 Unintended Opcodes (No More Secrets) (page 82): "This instruction works exactly like INC followed by SBC, with SBC inheriting the decimal mode"

Thanks for spotting this. Added to the main article and referenced the instruction in Decimal Mode Flag. --JohannKlasek (talk) 13:59, 20 January 2021 (CET)