nanoMIPS doesn't have delay slots IIRC. microMIPSR6 also deprecated delay slots for branches. MIPSR6 got rid of delay slots for a family of branches called 'com

nanoMIPS doesn't have delay slots IIRC. microMIPSR6 also deprecated delay slots for branches. MIPSR6 got rid of delay slots for a family of branches called 'compact branches' which have 'forbidden slots' which require that back-to-back branches be separated by a nop or other instruction.