Full Eight Bit Mfc Full May 2026
Unlike reduced 8-bit systems that share accumulators, the "full" MFC boasts:
When a vintage computer crashes, a signature analysis using a logic analyzer compares captured opcodes against the full MFC table to find corrupted ROM or failed CPU. full eight bit mfc full
Below is a simplified layout of the Z80’s primary opcode map. Each cell represents a 2‑digit hex value. Instructions marked (HL) mean “memory location pointed to by HL”. Unlike reduced 8-bit systems that share accumulators, the
| Low nibble →
High nibble ↓ | 0x0 | 0x1 | 0x2 | 0x3 | 0x4 | 0x5 | 0x6 | 0x7 | 0x8 | 0x9 | 0xA | 0xB | 0xC | 0xD | 0xE | 0xF |
|-------------------------------|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|-----|
| 0x0 | NOP | LD BC,imm | LD (BC),A | INC BC | INC B | DEC B | LD B,imm | RLCA | EX AF,AF' | ADD HL,BC | LD A,(BC) | DEC BC | INC C | DEC C | LD C,imm | RRCA |
| 0x1 | DJNZ d | LD DE,imm | LD (DE),A | INC DE | INC D | DEC D | LD D,imm | RLA | JR d | ADD HL,DE | LD A,(DE) | DEC DE | INC E | DEC E | LD E,imm | RRA |
| 0x2 | JR NZ,d | LD HL,imm | LD (HL),A | INC HL | INC H | DEC H | LD H,imm | DAA | JR Z,d | ADD HL,HL | LD A,(HL) | DEC HL | INC L | DEC L | LD L,imm | CPL |
| 0x3 | JR NC,d | LD SP,imm | LD (nn),A | INC SP | INC (HL) | DEC (HL) | LD (HL),imm | SCF | JR C,d | ADD HL,SP | LD A,(nn) | DEC SP | INC A | DEC A | LD A,imm | CCF |
| 0x4 | LD B,B | LD B,C | LD B,D | LD B,E | LD B,H | LD B,L | LD B,(HL) | LD B,A | LD C,B | LD C,C | LD C,D | LD C,E | LD C,H | LD C,L | LD C,(HL) | LD C,A |
| 0x5 | LD D,B | LD D,C | LD D,D | LD D,E | LD D,H | LD D,L | LD D,(HL) | LD D,A | LD E,B | LD E,C | LD E,D | LD E,E | LD E,H | LD E,L | LD E,(HL) | LD E,A |
| 0x6 | LD H,B | LD H,C | LD H,D | LD H,E | LD H,H | LD H,L | LD H,(HL) | LD H,A | LD L,B | LD L,C | LD L,D | LD L,E | LD L,H | LD L,L | LD L,(HL) | LD L,A |
| 0x7 | LD (HL),B | LD (HL),C | LD (HL),D | LD (HL),E | LD (HL),H | LD (HL),L | HALT | LD (HL),A | LD A,B | LD A,C | LD A,D | LD A,E | LD A,H | LD A,L | LD A,(HL) | LD A,A |
| 0x8 | ADD A,B | ADD A,C | ADD A,D | ADD A,E | ADD A,H | ADD A,L | ADD A,(HL) | ADD A,A | ADC A,B | ADC A,C | ADC A,D | ADC A,E | ADC A,H | ADC A,L | ADC A,(HL) | ADC A,A |
| 0x9 | SUB B | SUB C | SUB D | SUB E | SUB H | SUB L | SUB (HL) | SUB A | SBC A,B | SBC A,C | SBC A,D | SBC A,E | SBC A,H | SBC A,L | SBC A,(HL) | SBC A,A |
| 0xA | AND B | AND C | AND D | AND E | AND H | AND L | AND (HL) | AND A | XOR B | XOR C | XOR D | XOR E | XOR H | XOR L | XOR (HL) | XOR A |
| 0xB | OR B | OR C | OR D | OR E | OR H | OR L | OR (HL) | OR A | CP B | CP C | CP D | CP E | CP H | CP L | CP (HL) | CP A |
| 0xC | RET NZ | POP BC | JP NZ,nn | JP nn | CALL NZ,nn | PUSH BC | ADD A,imm | RST 0 | RET Z | RET | JP Z,nn | CB | CALL Z,nn | CALL nn | ADC A,imm | RST 8 |
| 0xD | RET NC | POP DE | JP NC,nn | OUT (imm),A | CALL NC,nn | PUSH DE | SUB imm | RST 10h | RET C | EXX | JP C,nn | IN A,(imm) | CALL C,nn | DD | SBC A,imm | RST 18h |
| 0xE | LD I,A | POP HL | JP (HL) | LD (nn),HL | CALL PO,nn | PUSH HL | AND imm | RST 20h | LD A,I | EX (SP),HL | JP PE,nn | EX DE,HL | CALL PE,nn | ED | XOR imm | RST 28h |
| 0xF | LD A,IFF2 | POP AF | JP P,nn | DI | CALL P,nn | PUSH AF | OR imm | RST 30h | LD IFF2,A | LD SP,HL | JP M,nn | EI | CALL M,nn | FD | CP imm | RST 38h | Below is a simplified layout of the Z80’s
Note:
CB,DD,ED,FDare prefix bytes — they change the meaning of the next byte, creating extended MFCs.
To the uninitiated, the phrase "full eight bit mfc full" appears redundant. However, in engineering contexts, it specifies three distinct constraints:
When you search for full eight bit mfc full, you are demanding the absolute maximum capability from a vintage or modern 8-bit MFC.
