Arquitectura de computadoras 2023

Compilación y debug

nasm -f bin <name>.asm -o <name>.com
dosbox .
debug.exe <name>.com

Banderas en Debug

Banderas of df if sf zf af pf cf

Todas SET (1)

OV DN EI NG ZR AC PE CY 

Todas CLEARED (0)

NV UP DI PL NZ NA PO NC 

• Overflow of = OV (OVerflow) NV (No oVerflow)
• Direction df = DN (decrement) UP (increment)
• Interrupt if = EI (enabled) DI (disabled)
• Sign sf = NG (Negative) PL (Positive)
• Zero zf = ZR (Zero) NZ (Not Zero)
• Aux Carry af = AC (auxiliary carry) NA (No Ac)
• Parity pf = PE (even) PO (odd)
• Carry cf = CY (Carry) NC (No Carry)