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DP80390 Datasheet(PDF) 15 Page - Digital Core Design

Part # DP80390
Description  Pipelined High Performance Microcontroller Instructions set details ver 3.10
PDF  84 Pages
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Manufacturer  DCD [Digital Core Design]
Direct Link  http://www.digitalcoredesign.com
Logo DCD - Digital Core Design

DP80390 Datasheet(HTML) 15 Page - Digital Core Design

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DP80390 Instructions set details
- 15 -
All trademarks mentioned in this document
http://www.DigitalCoreDesign.com
are trademarks of their respective owners.
http://www.dcd.pl
Copyright 1999-2003 DCD – Digital Core Design. All Rights Reserved.
3. INSTRUCTIONS SET DETAILS
3.1.
ACALL *
3.1.1. LARGE
Instruction:
ACALL addr11
Function:
Absolute call
Description:
ACALL unconditionally calls a subroutine located at the indicated
address. The instruction increments the PC twice to obtain the address
of the following instruction, then pushes the 16-bit result onto the stack
(low-order byte first) and increments the stack pointer twice. The
destination address is obtained by successively concatenating the five
high-order bits of the incremented PC, opcode bits 7-5, the second byte
of the instruction. The subroutine called must therefore start within the
same 2K block of program memory as the first byte of the instruction
following ACALL. No flags are affected.
Operation:
(PC)
← (PC) + 2
(SP)
← (SP) + 1
((SP))
← (PC7-0)
(SP)
← (SP) + 1
((SP))
← (PC15-8)
(PC10-0)
← page address
Bytes:
2
Cycles:
4
Encoding:
a10 a9
a8
1
0
0
0
1
a7
a6
a5
a4
a3
a2
a1
a0



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