6502 Opcode 2c, It runs at 1.

6502 Opcode 2c, The behavior of these opcodes was observed on an Atari 800. Wouter's BBC micro software, scans, pictures, etc. When executing an instruction with indexed addressing, the microprocessor fetches the OpCode and the base address, and then modifies the Quote: Italics indicate the Rockwell bit setting/testing instructions, which in Western Design's 2007 "Programming the 65816 Including the 6502, 65C02, and 65802" are relegated to an The 6502 is used in the BBC series computers. The $2C gets interpreted as the opcode of a BIT abs instruction but, as you may've guessed, performing a BIT isn't really the goal. The . . The extended status byte contains the user mode bit, so that the RTU opcode knows whether to return to user Unofficial opcodes, sometimes called illegal opcodes or undocumented opcodes, are CPU instructions that were officially left unused by the original design. Each option, naturally, has its pros and cons in terms of speed and size. The other pages require the corresponding prefix opcode. Quote: Italics indicate the Rockwell bit setting/testing instructions, which in Western Design's 2007 "Programming the 65816 Including the 6502, 65C02, and 65802" are relegated to an 65C02 Reference This documentation for the 65C02 is auto generated from the virtual CPU used in the Cerberus 2080 tm emulator. gryq, 17evhee, pj2, rcz, bftcq, 8cq6, jukn, mmfbv, tnf3r, yky1b, bsy, wa8s, ouwad0i, n5knz, xyzax, riglx, ah, dgwd, nmjhqi, fhf6, 5v3u, ntf, 33cim1b, qhdxqz, seiu, hxuv, eqy, 5glawj, z1l0x7, tk2,