http://bitsavers.trailing-edge.com/pdf/ibm/360/princOps/A22-6821-0_360PrincOps.pdf

Condition code    -- two bits of the PSW
For arithmetical (usually)
   0    if equal
   1    if < zero
   2    if > zero
   3    if overflow
For bit operators, 0 if zero and 1 if not zero
Arithmetical "logical" operators could indicate carry

Conditional jump instructions
   BC or BCR  -- branch on conditional ... four bits give the conditions on which the branch occurs
   BCTx     if (--Reg == 0) branch
   BXH      if (Reg+Incr > Limit) branch
   BXLE     if (Reg+Incr <= Limit) branch

https://en.wikipedia.org/wiki/FLAGS_register

Intel flags -- actually 16, but 6 for status
   CF -- carry flag       [unsigned overflow]
   PF -- parity flag      <parity of least significant byte>
   AF -- adjust flag      <carry from least significant four bits>
   ZF -- zero flag
   SF -- sign flag        
   OV -- overflow flag    (two's complement overflow)  -- instruction same for signed and unsigned

http://www.felixcloutier.com/x86/Jcc.html
https://en.wikibooks.org/wiki/X86_Assembly/Control_Flow

Kinds of jumps
Unsigned
  Jump above             (CF==0 && ZF==0)          -- no carry and result not zero
  Jump above or equal    (CF==0)                   -- no carry
  Jump below             (CF==1)                   -- carry
  Jump below or equal    (CF==1 || ZF==0)          -- carry or result not zero

Either
  Jump equal             (ZF==1)                   -- result is zero 
  Jump not equal         (ZF==0)                   -- result not zero

Signed
  Jump greater           (ZF==0 && SF==OF)         -- not zero and sign and overflow are same
  Jump greater or equal  (SF==OF)                  -- sign and overflow are same
  Jump less              (SF!=OF)                  -- sign and overflow are different
  Jump less or equal     (ZF==1 || SF!=OF)         -- zero or sign and overflow are different