Sbc hl, sp, Operation, Description – Zilog EZ80F916 User Manual
Page 346: Condition bits affected attributes
eZ80
®
CPU
User Manual
UM007715-0415
CPU Instruction Set
337
SBC HL, SP
Subtract with Carry
Operation
HL HL – SP – C
Description
The Stack Pointer (SP) and the Carry Flag (C) are subtracted from the contents of the HL
register. The result is written to HL. In ADL mode, or if the .L suffix is employed, the 24-
bit Stack Pointer Long (SPL) is used. In Z80 mode of if the .S suffix is employed, the 16-
bit Stack Pointer Short (SPS) is used.
Condition Bits Affected
Attributes
S
Set if result is negative; reset otherwise.
Z
Set if result is 0; reset otherwise.
H
Set if borrow from bit 12; reset otherwise.
P/V
Set if overflow; reset otherwise.
N
Set.
C
Set if borrow; reset otherwise.
Mnemonic Operand
ADL Mode Cycle
Opcode (hex)
SBC
HL,SP
X
2
ED, 72
SBC
.S
HL,SP
1
3
52, ED, 72
SBC
.L
HL,SP
0
3
49, ED, 72