CSB480E View Datasheet(PDF) - Hynix Semiconductor
Part Name
Description
MFG CO.
'CSB480E' PDF : 106 Pages View PDF
Chapter 3. Instruction
(23) IA
Naming :
Status :
Format :
Function :
<Comment>
(24) IY
Naming :
Status :
Format :
Function :
<Comment>
Increment Accumulator
Set
¥°
A ¡ç A+1
Data of the accumulator is incremented by one. Results are
returned to the accumulator.
A carry is not allowed to have effect upon the status.
Increment Y-Register and Status 1 on Carry
Carry to status
¥°
Y ¡ç Y + 1
ST ¡ç 1 (when Y = 15)
ST ¡ç 0 (when Y < 15)
Data of the Y-register is incremented by one and results are
returned to the Y-register.
Carry data as results is transferred to the status. When the
total is more than 15, the status is set.
(25) DA
Naming :
Status :
Format :
Function :
<Comment>
Decrement Accumulator and Status 1 on Borrow
Carry to status
¥°
A ¡ç A - 1
ST ¡ç 1(when A ¡Ã1)
ST ¡ç 0 (when A = 0)
Data of the accumulator is decremented by one. As a result
(by addition of Fh), if a borrow is caused, the status is reset to
¡È0¡È by logic. If the data is more than one, no borrow occurs
and thus the status is set to ¡È1¡È.
3 - 13
Share Link: 
