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SBC: Difference between revisions

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'''SBC''' (Subtract with Carry/Borrow) is 65x instruction that performs a subtraction.
'''SBC''' (Subtract with Carry/Borrow) is 65x instruction that performs a subtraction.
{| class="wikitable" style="float:right;clear:right;width:30%"
!colspan="8"|Basic Info
|+
|'''Addressing Mode'''
|'''Opcode'''
|'''Length'''
|'''Speed'''
|+
|immediate
|E9
|2 bytes
|2 cycles
|+
|absolute
|ED
|3 bytes
|4 cycles
|+
|absolute long
|EF
|4 bytes
|5 cycles
|+
|direct page
|E5
|2 bytes
|3 cycles
|+
|direct page indirect
|F2
|2 bytes
|5 cycles
|+
|direct page indirect long
|E7
|2 bytes
|6 cycles
|+
|absolute indexed by X
|FD
|3 bytes
|4 cycles
|+
|absolute long indexed by X
|FF
|4 bytes
|5 cycles
|+
|absolute indexed by Y
|F9
|3 bytes
|4 cycles
|+
|direct page indexed by X
|F5
|2 bytes
|4 cycles
|+
|direct page indirect indexed by X
|E1
|2 bytes
|6 cycles
|+
|direct page indirect indexed by Y
|F1
|2 bytes
|5 cycles
|+
|direct page indirect long indexed by Y
|F7
|2 bytes
|6 cycles
|+
|stack relative
|E3
|2 bytes
|4 cycles
|+
|stack relative indirect indexed by Y
|F3
|2 bytes
|7 cycles
|}


{| class="wikitable" style="float:right;clear:right;width:30%"
{| class="wikitable" style="float:right;clear:right;width:30%"

Revision as of 05:42, 2 May 2023

SBC (Subtract with Carry/Borrow) is 65x instruction that performs a subtraction.

Basic Info
Addressing Mode Opcode Length Speed
immediate E9 2 bytes 2 cycles
absolute ED 3 bytes 4 cycles
absolute long EF 4 bytes 5 cycles
direct page E5 2 bytes 3 cycles
direct page indirect F2 2 bytes 5 cycles
direct page indirect long E7 2 bytes 6 cycles
absolute indexed by X FD 3 bytes 4 cycles
absolute long indexed by X FF 4 bytes 5 cycles
absolute indexed by Y F9 3 bytes 4 cycles
direct page indexed by X F5 2 bytes 4 cycles
direct page indirect indexed by X E1 2 bytes 6 cycles
direct page indirect indexed by Y F1 2 bytes 5 cycles
direct page indirect long indexed by Y F7 2 bytes 6 cycles
stack relative E3 2 bytes 4 cycles
stack relative indirect indexed by Y F3 2 bytes 7 cycles
Flags Clobbered
N V M X D I Z C
. . . .

See Also