NEC PD754144 - Manual (Page 274)

CHAPTER 11 INSTRUCTION SET
274 User’s Manual U10676EJ3V0UM
11.4.7 Compare instructions
SKE reg, #n4
Function: Skip if reg = n4 n4 = I 3-0 : 0-FH
Skips the next instruction if the contents of register reg (X, A, H, L, D, E, B, or C) are equal to 4-bit immediate data
n4.
SKE @HL, #n4
Function: Skip if (HL) = n4 n4 = I 3-0 : 0-FH
Skips the next instruction if the contents of the data memory addressed by register pair HL are equal to 4-bit
immediate data n4.
SKE A, @HL
Function: Skip if A = (HL)
Skips the next instruction if the contents of the A register are equal to the contents of the data memory addressed
by register pair HL.
SKE XA, @HL
Function: Skip if A = (HL) and X = (HL + 1)
Skips the next instruction if the contents of the A register are equal to the contents of the data memory addressed
by register pair HL and if the contents of the X register are equal to the contents of the next memory address.
However, if the contents of the L register are an odd number, an address whose least significant address is ignored
is specified.
SKE A, reg
Function: Skip if A = reg
Skips the next instruction if the contents of the A register are equal to register reg (X, A, H, L, D, E, B, or C).
SKE XA, rp’
Function: Skip if XA = rp’
Skips the next instruction if the contents of register pair XA are equal to the contents of register pair rp’ (XA, HL,
DE, BC, XA’, HL’, DE’, or BC’).