Sharp PC-1500 - Page 49

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® ROP (Reset OisP)
Resets the LCD on / off cont rol fl ipfl op DISP .
•Fo rmat
RDP
@ ITA (In To Ace)
•-Operation
0 - DISP
Off pattern signal is generated from th e
CPU internal LCD b ackp late signal lines
(HO ~ H7 )
The co ntents of the input pon (!NO ~ IN7) arc transferred to the accumul ator.
On ly the fl ag Z changes.
•F ormat
I TA
@ SIE (Set IE)
•Operation
I N 0 ~ 7 - Accumul at or
Sets
the interrupt e nab le fla g IE. Aft er this. it becomes ready fo r maskable interrupt
and timer interrupt acknowle dg e.
No change tak es place in other flags.
•
Fo rmat
SI E
@ RIE (Reset IE )
•Operati on
I - IE
Resets the interrupt enable flag IE. After this. maskable int erru pt and timer inter rup t
ar e disabled.
No c
han ge tak es place in other fl ags .
• Format
RIE
® AMO (Ace to Tm and 0)
•Op erati on
0 - IE
The contents of th e accumulat or a re transl err ed to the ti mer register (TM). Si nc e the
timer register
co nsists of 9 bits. the accumulator co nt en ts ar e transferred to the low
or d er 8 bits of the register and "O~ is ente red in the highest ord er bit.
No change takes place in other
fla gs .
•Format
AMO
•Op erati on
A - TM (TMO ~ TM7)
0 - TM8
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