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SBC HL,ss     Subtract Through Carry     Rabbit 2000/3000/4000/5000 Instruction

Opcode	Instruction	Operation
----	SBC HL,ss	HL = HL - ss - CF
ED 42	SBC HL,BC	HL = HL - BC - CF
ED 52	SBC HL,DE	HL = HL - DE - CF
ED 62	SBC HL,HL	HL = HL - HL - CF
ED 72	SBC HL,SP	HL = HL - SP - CF

Clocks	8-Bit Access	16-Bit Unaligned	16-Bit Aligned
Rabbit 2000/3000/4000	4	n/a	n/a
Rabbit 5000	4	4	2

Flags				ALTD			IOI/IOE
S	Z	L/V	C	F	R	SP	S	D
·	·	V	·	·	·

Description

Subtracts the C flag and the data in ss (any of BC, DE, HL, or SP) from HL. The result is stored in HL. These operations output an inverted carry:

• The C flag is set if HL is less than the data being subtracted from it.

• The C flag is cleared if HL is greater than the data being subtracted from it.

• The C flag is unchanged if HL is equal to the data being subtracted from it.