Sharp PC-1500 - PC-1500 Assembly Diagrams and Detailed Schematics

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@ ORI (OR Immediate)
The cont ents of the accumu l ator OI' external memor y are OR ed with the immediate
data , and its result is sto red in the accumul ator or the ex ternal memory.
Only Oag Z changes.
•F o rmat
OR I AJ
ORI (Rr eg).i
OR I ll( Rreg).i
OR I (ab),i
OR I lt(a b).i
@ EOR (Exclusive OR)
•Operation
( Op erand) v i - [operand}
(Z changes.)
The co ntents of the accumulator arc exclusiv el y ORcd with the value of the e xte rnal
memory. and its resu lt is stored in the accumultor.
Only the flag Z c han ges.
• For mal
EOR
(Rrcg)
EOR lt (Rreg)
EOR
(ab)
E OR ll(ab)
( EX ) EOR (Xreg)
Xr eg = 4700 H
•Op eration
A
Ee [opcrand] - A
(Z changes.)
A= I 0 0 0 1 0 lt xecuteA= I 0 1 0 1 1 0 1 1
_ _,
Contents = l_o_ i __ i _o ___ o _ _J I I Z= O
of 4700 H .
@ EAi (Exclusive or Ace and Immed iate)
Th e c ont ents of the accumul ator ar e ex clusi ve ly ORed w it h the immedi ate dat a. a nd its
result is stored in the accumul ato r.
Only t he flag Z chang es.
•Form at
EA i i
@ INC {INCrement)
•O peration
A ffi i - /\
(Z changes.)
The va l ue of th e accum ul ato r or t he regis ter is IN Cr eme nt ed by on e. In th e case of th e
8-bit r eg ister (A, RL , RH) , it makes flags C. V. Hand Z change d. In the case oflhc 16-
bit register Rr eg. no flag change t ake s place.
•
Forma t
I NC/\
INC RI.
I
NC RH
I NC Rreg
•Op erat ion
[Operand] + I - [operand]
(C. V. H. and Z changed.)
[[
Ope rand) + I - [operand)
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