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CPU6502 Instruction Manual v2.1
Sunplus reserves the rights to change this documentation without prior notice.
09/13/2005
6
Revision Date
By
Remark
V1.5 03/19/2001
Michael
Lin
Modify:
From: ADC (aa), Y: 6502 Opcode = 1EH
To: ADC (aa), Y: 6502 Opcode = 71H
V1.4
12/12/2000
Michael Lin Page 44, SBC
Origin: C: Set if there is a “borrow” occurred. (M > A).
Modify to: C: Set if there is
no
“borrow” occurred. (M > A).
V1.3
09/08/2000
Michael Lin Page 7
Update the CPU type of IC. The X2s.,exe is updated to v2.78, 09/08/2000
V1.2
07/18/2000
Michael Lin Page 44
Origin:
SBC: (A-M -C)
Æ
A, C
Modify to:
SBC: (A-M -
C
)
Æ
A, C