45300 Parallax Inc, 45300 Datasheet - Page 164
![BOARD PROTO SX48](/photos/9/25/92507/mfg_45300_sml.jpg)
45300
Manufacturer Part Number
45300
Description
BOARD PROTO SX48
Manufacturer
Parallax Inc
Type
MCUr
Specifications of 45300
Contents
Board
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
SX48
For Use With
130-28029 - KIT PARTS SMART SENSORS45111 - MANUAL FOR SX-KEY/BLITZ VER. 2.028850 - CARRIER BOARD BOARD OF EDU USB
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Part Number:
453001
Manufacturer:
LITTELFUSE/力特
Quantity:
20 000
Company:
Part Number:
453002
Manufacturer:
LITTELFU
Quantity:
1 000
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15 Appendix E: SX Data Sheet
15.2.16 Calling Across Pages
When it is necessary to call a subroutine that exists on a different page, you must set the page select bits
to point to the desired page before the call is executed. This can be done discretely using SETB and
CLRB instructions or by writing a value to the STATUS register. The SX offers a new single-cycle
instruction called PAGE that sets the page select bits for you. See “Dealing with Code Pages” in Chapter
7 for more information. NOTE: Using the @ symbol in the CALL instruction (CALL @label) will cause the
assembler to insert the PAGE instruction before your CALL, during assembly.
15.2.17 Returning from a subroutine
Subroutines are usually terminated with a return-type instruction. Before we discuss the different
return instructions, we should describe the operation of the stack.
Page 164 SX-Key/Blitz Development System Manual 2.0 Parallax, Inc.
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Figure 33 - Calling Across Pages
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Figure 32 - The Call Instruction
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PAGE label
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CALL label
CALL label
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