A <- A - (HL) - CY
SBC
A,(HL)
| b7 | b6 | b5 | b4 | b3 | b2 | b1 | b0 | |
|---|---|---|---|---|---|---|---|---|
| 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | $9E |
The byte at the memory address specified by the contents of the HL register pair along with the Carry Flag (C in the F register) is subtracted from the contents of the Accumulator, and the result is stored in the Accumulator.
| S | is set if result is negative, otherwise it is reset. |
| Z | is set if result is 0, otherwise it is reset. |
| H | is set if borrow from bit 4, otherwise it is reset. |
| P/V | is set if overflow, otherwise it is reset |
| N | is set. |
| C | is set if borrow, otherwise it is reset. |
If the Accumulator contains $16, the Carry Flag is set, register pair HL contains $6666, and memory location $6666 contains byte $10, then upon the execution of
SBC A,(HL)
the Accumulator contains $05.